diff --git a/src/etc/completions/x.fish b/src/etc/completions/x.fish
index 49fe10a4ea2..933557ab0d7 100644
--- a/src/etc/completions/x.fish
+++ b/src/etc/completions/x.fish
@@ -73,7 +73,7 @@ complete -c x -n "__fish_x_needs_command" -a "run" -d 'Run tools contained in th
 complete -c x -n "__fish_x_needs_command" -a "setup" -d 'Set up the environment for development'
 complete -c x -n "__fish_x_needs_command" -a "suggest" -d 'Suggest a subset of tests to run, based on modified files'
 complete -c x -n "__fish_x_needs_command" -a "vendor" -d 'Vendor dependencies'
-complete -c x -n "__fish_x_needs_command" -a "perf" -d 'Perform profiling and benchmarking of the compiler using the `rustc-perf-wrapper` tool'
+complete -c x -n "__fish_x_needs_command" -a "perf" -d 'Perform profiling and benchmarking of the compiler using `rustc-perf`'
 complete -c x -n "__fish_x_using_subcommand build" -l config -d 'TOML configuration file for build' -r -F
 complete -c x -n "__fish_x_using_subcommand build" -l build-dir -d 'Build directory, overrides `build.build-dir` in `config.toml`' -r -f -a "(__fish_complete_directories)"
 complete -c x -n "__fish_x_using_subcommand build" -l build -d 'build target of the stage0 compiler' -r -f
@@ -638,36 +638,218 @@ complete -c x -n "__fish_x_using_subcommand vendor" -l llvm-profile-generate -d
 complete -c x -n "__fish_x_using_subcommand vendor" -l enable-bolt-settings -d 'Enable BOLT link flags'
 complete -c x -n "__fish_x_using_subcommand vendor" -l skip-stage0-validation -d 'Skip stage0 compiler validation'
 complete -c x -n "__fish_x_using_subcommand vendor" -s h -l help -d 'Print help (see more with \'--help\')'
-complete -c x -n "__fish_x_using_subcommand perf" -l config -d 'TOML configuration file for build' -r -F
-complete -c x -n "__fish_x_using_subcommand perf" -l build-dir -d 'Build directory, overrides `build.build-dir` in `config.toml`' -r -f -a "(__fish_complete_directories)"
-complete -c x -n "__fish_x_using_subcommand perf" -l build -d 'build target of the stage0 compiler' -r -f
-complete -c x -n "__fish_x_using_subcommand perf" -l host -d 'host targets to build' -r -f
-complete -c x -n "__fish_x_using_subcommand perf" -l target -d 'target targets to build' -r -f
-complete -c x -n "__fish_x_using_subcommand perf" -l exclude -d 'build paths to exclude' -r -F
-complete -c x -n "__fish_x_using_subcommand perf" -l skip -d 'build paths to skip' -r -F
-complete -c x -n "__fish_x_using_subcommand perf" -l rustc-error-format -r -f
-complete -c x -n "__fish_x_using_subcommand perf" -l on-fail -d 'command to run on failure' -r -f -a "(__fish_complete_command)"
-complete -c x -n "__fish_x_using_subcommand perf" -l stage -d 'stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)' -r -f
-complete -c x -n "__fish_x_using_subcommand perf" -l keep-stage -d 'stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
-complete -c x -n "__fish_x_using_subcommand perf" -l keep-stage-std -d 'stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
-complete -c x -n "__fish_x_using_subcommand perf" -l src -d 'path to the root of the rust checkout' -r -f -a "(__fish_complete_directories)"
-complete -c x -n "__fish_x_using_subcommand perf" -s j -l jobs -d 'number of jobs to run in parallel' -r -f
-complete -c x -n "__fish_x_using_subcommand perf" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
-complete -c x -n "__fish_x_using_subcommand perf" -l error-format -d 'rustc error format' -r -f
-complete -c x -n "__fish_x_using_subcommand perf" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
-complete -c x -n "__fish_x_using_subcommand perf" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
-complete -c x -n "__fish_x_using_subcommand perf" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
-complete -c x -n "__fish_x_using_subcommand perf" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
-complete -c x -n "__fish_x_using_subcommand perf" -l reproducible-artifact -d 'Additional reproducible artifacts that should be added to the reproducible artifacts archive' -r
-complete -c x -n "__fish_x_using_subcommand perf" -l set -d 'override options in config.toml' -r -f
-complete -c x -n "__fish_x_using_subcommand perf" -s v -l verbose -d 'use verbose output (-vv for very verbose)'
-complete -c x -n "__fish_x_using_subcommand perf" -s i -l incremental -d 'use incremental compilation'
-complete -c x -n "__fish_x_using_subcommand perf" -l include-default-paths -d 'include default paths in addition to the provided ones'
-complete -c x -n "__fish_x_using_subcommand perf" -l dry-run -d 'dry run; don\'t build anything'
-complete -c x -n "__fish_x_using_subcommand perf" -l dump-bootstrap-shims -d 'Indicates whether to dump the work done from bootstrap shims'
-complete -c x -n "__fish_x_using_subcommand perf" -l json-output -d 'use message-format=json'
-complete -c x -n "__fish_x_using_subcommand perf" -l bypass-bootstrap-lock -d 'Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)'
-complete -c x -n "__fish_x_using_subcommand perf" -l llvm-profile-generate -d 'generate PGO profile with llvm built for rustc'
-complete -c x -n "__fish_x_using_subcommand perf" -l enable-bolt-settings -d 'Enable BOLT link flags'
-complete -c x -n "__fish_x_using_subcommand perf" -l skip-stage0-validation -d 'Skip stage0 compiler validation'
-complete -c x -n "__fish_x_using_subcommand perf" -s h -l help -d 'Print help (see more with \'--help\')'
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l config -d 'TOML configuration file for build' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l build-dir -d 'Build directory, overrides `build.build-dir` in `config.toml`' -r -f -a "(__fish_complete_directories)"
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l build -d 'build target of the stage0 compiler' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l host -d 'host targets to build' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l target -d 'target targets to build' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l exclude -d 'build paths to exclude' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l skip -d 'build paths to skip' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l rustc-error-format -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l on-fail -d 'command to run on failure' -r -f -a "(__fish_complete_command)"
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l stage -d 'stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l keep-stage -d 'stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l keep-stage-std -d 'stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l src -d 'path to the root of the rust checkout' -r -f -a "(__fish_complete_directories)"
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -s j -l jobs -d 'number of jobs to run in parallel' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l error-format -d 'rustc error format' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l reproducible-artifact -d 'Additional reproducible artifacts that should be added to the reproducible artifacts archive' -r
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l set -d 'override options in config.toml' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -s v -l verbose -d 'use verbose output (-vv for very verbose)'
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -s i -l incremental -d 'use incremental compilation'
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l include-default-paths -d 'include default paths in addition to the provided ones'
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l dry-run -d 'dry run; don\'t build anything'
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l dump-bootstrap-shims -d 'Indicates whether to dump the work done from bootstrap shims'
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l json-output -d 'use message-format=json'
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l bypass-bootstrap-lock -d 'Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)'
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l llvm-profile-generate -d 'generate PGO profile with llvm built for rustc'
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l enable-bolt-settings -d 'Enable BOLT link flags'
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l skip-stage0-validation -d 'Skip stage0 compiler validation'
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -s h -l help -d 'Print help (see more with \'--help\')'
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -a "eprintln" -d 'Run `profile_local eprintln`. This executes the compiler on the given benchmarks and stores its stderr output'
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -a "samply" -d 'Run `profile_local samply` This executes the compiler on the given benchmarks and profiles it with `samply`. You need to install `samply`, e.g. using `cargo install samply`'
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -a "cachegrind" -d 'Run `profile_local cachegrind`. This executes the compiler on the given benchmarks under `Cachegrind`'
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -a "benchmark" -d 'Run compile benchmarks with a locally built compiler'
+complete -c x -n "__fish_x_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -a "compare" -d 'Compare the results of two previously executed benchmark runs'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l include -d 'Select the benchmarks that you want to run (separated by commas). If unspecified, all benchmarks will be executed' -r
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l exclude -d 'Select the benchmarks matching a prefix in this comma-separated list that you don\'t want to run' -r
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l scenarios -d 'Select the scenarios that should be benchmarked' -r -f -a "{Full\t'',IncrFull\t'',IncrUnchanged\t'',IncrPatched\t''}"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l profiles -d 'Select the profiles that should be benchmarked' -r -f -a "{Check\t'',Debug\t'',Doc\t'',Opt\t'',Clippy\t''}"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l config -d 'TOML configuration file for build' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l build-dir -d 'Build directory, overrides `build.build-dir` in `config.toml`' -r -f -a "(__fish_complete_directories)"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l build -d 'build target of the stage0 compiler' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l host -d 'host targets to build' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l target -d 'target targets to build' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l skip -d 'build paths to skip' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l rustc-error-format -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l on-fail -d 'command to run on failure' -r -f -a "(__fish_complete_command)"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l stage -d 'stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l keep-stage -d 'stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l keep-stage-std -d 'stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l src -d 'path to the root of the rust checkout' -r -f -a "(__fish_complete_directories)"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -s j -l jobs -d 'number of jobs to run in parallel' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l error-format -d 'rustc error format' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l reproducible-artifact -d 'Additional reproducible artifacts that should be added to the reproducible artifacts archive' -r
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l set -d 'override options in config.toml' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -s v -l verbose -d 'use verbose output (-vv for very verbose)'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -s i -l incremental -d 'use incremental compilation'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l include-default-paths -d 'include default paths in addition to the provided ones'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l dry-run -d 'dry run; don\'t build anything'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l dump-bootstrap-shims -d 'Indicates whether to dump the work done from bootstrap shims'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l json-output -d 'use message-format=json'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l bypass-bootstrap-lock -d 'Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l llvm-profile-generate -d 'generate PGO profile with llvm built for rustc'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l enable-bolt-settings -d 'Enable BOLT link flags'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l skip-stage0-validation -d 'Skip stage0 compiler validation'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -s h -l help -d 'Print help (see more with \'--help\')'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l include -d 'Select the benchmarks that you want to run (separated by commas). If unspecified, all benchmarks will be executed' -r
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l exclude -d 'Select the benchmarks matching a prefix in this comma-separated list that you don\'t want to run' -r
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l scenarios -d 'Select the scenarios that should be benchmarked' -r -f -a "{Full\t'',IncrFull\t'',IncrUnchanged\t'',IncrPatched\t''}"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l profiles -d 'Select the profiles that should be benchmarked' -r -f -a "{Check\t'',Debug\t'',Doc\t'',Opt\t'',Clippy\t''}"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l config -d 'TOML configuration file for build' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l build-dir -d 'Build directory, overrides `build.build-dir` in `config.toml`' -r -f -a "(__fish_complete_directories)"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l build -d 'build target of the stage0 compiler' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l host -d 'host targets to build' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l target -d 'target targets to build' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l skip -d 'build paths to skip' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l rustc-error-format -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l on-fail -d 'command to run on failure' -r -f -a "(__fish_complete_command)"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l stage -d 'stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l keep-stage -d 'stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l keep-stage-std -d 'stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l src -d 'path to the root of the rust checkout' -r -f -a "(__fish_complete_directories)"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -s j -l jobs -d 'number of jobs to run in parallel' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l error-format -d 'rustc error format' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l reproducible-artifact -d 'Additional reproducible artifacts that should be added to the reproducible artifacts archive' -r
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l set -d 'override options in config.toml' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -s v -l verbose -d 'use verbose output (-vv for very verbose)'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -s i -l incremental -d 'use incremental compilation'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l include-default-paths -d 'include default paths in addition to the provided ones'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l dry-run -d 'dry run; don\'t build anything'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l dump-bootstrap-shims -d 'Indicates whether to dump the work done from bootstrap shims'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l json-output -d 'use message-format=json'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l bypass-bootstrap-lock -d 'Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l llvm-profile-generate -d 'generate PGO profile with llvm built for rustc'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l enable-bolt-settings -d 'Enable BOLT link flags'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -l skip-stage0-validation -d 'Skip stage0 compiler validation'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from samply" -s h -l help -d 'Print help (see more with \'--help\')'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l include -d 'Select the benchmarks that you want to run (separated by commas). If unspecified, all benchmarks will be executed' -r
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l exclude -d 'Select the benchmarks matching a prefix in this comma-separated list that you don\'t want to run' -r
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l scenarios -d 'Select the scenarios that should be benchmarked' -r -f -a "{Full\t'',IncrFull\t'',IncrUnchanged\t'',IncrPatched\t''}"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l profiles -d 'Select the profiles that should be benchmarked' -r -f -a "{Check\t'',Debug\t'',Doc\t'',Opt\t'',Clippy\t''}"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l config -d 'TOML configuration file for build' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l build-dir -d 'Build directory, overrides `build.build-dir` in `config.toml`' -r -f -a "(__fish_complete_directories)"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l build -d 'build target of the stage0 compiler' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l host -d 'host targets to build' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l target -d 'target targets to build' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l skip -d 'build paths to skip' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l rustc-error-format -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l on-fail -d 'command to run on failure' -r -f -a "(__fish_complete_command)"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l stage -d 'stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l keep-stage -d 'stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l keep-stage-std -d 'stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l src -d 'path to the root of the rust checkout' -r -f -a "(__fish_complete_directories)"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -s j -l jobs -d 'number of jobs to run in parallel' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l error-format -d 'rustc error format' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l reproducible-artifact -d 'Additional reproducible artifacts that should be added to the reproducible artifacts archive' -r
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l set -d 'override options in config.toml' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -s v -l verbose -d 'use verbose output (-vv for very verbose)'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -s i -l incremental -d 'use incremental compilation'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l include-default-paths -d 'include default paths in addition to the provided ones'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l dry-run -d 'dry run; don\'t build anything'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l dump-bootstrap-shims -d 'Indicates whether to dump the work done from bootstrap shims'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l json-output -d 'use message-format=json'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l bypass-bootstrap-lock -d 'Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l llvm-profile-generate -d 'generate PGO profile with llvm built for rustc'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l enable-bolt-settings -d 'Enable BOLT link flags'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l skip-stage0-validation -d 'Skip stage0 compiler validation'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -s h -l help -d 'Print help (see more with \'--help\')'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l include -d 'Select the benchmarks that you want to run (separated by commas). If unspecified, all benchmarks will be executed' -r
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l exclude -d 'Select the benchmarks matching a prefix in this comma-separated list that you don\'t want to run' -r
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l scenarios -d 'Select the scenarios that should be benchmarked' -r -f -a "{Full\t'',IncrFull\t'',IncrUnchanged\t'',IncrPatched\t''}"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l profiles -d 'Select the profiles that should be benchmarked' -r -f -a "{Check\t'',Debug\t'',Doc\t'',Opt\t'',Clippy\t''}"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l config -d 'TOML configuration file for build' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l build-dir -d 'Build directory, overrides `build.build-dir` in `config.toml`' -r -f -a "(__fish_complete_directories)"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l build -d 'build target of the stage0 compiler' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l host -d 'host targets to build' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l target -d 'target targets to build' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l skip -d 'build paths to skip' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l rustc-error-format -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l on-fail -d 'command to run on failure' -r -f -a "(__fish_complete_command)"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l stage -d 'stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l keep-stage -d 'stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l keep-stage-std -d 'stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l src -d 'path to the root of the rust checkout' -r -f -a "(__fish_complete_directories)"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -s j -l jobs -d 'number of jobs to run in parallel' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l error-format -d 'rustc error format' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l reproducible-artifact -d 'Additional reproducible artifacts that should be added to the reproducible artifacts archive' -r
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l set -d 'override options in config.toml' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -s v -l verbose -d 'use verbose output (-vv for very verbose)'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -s i -l incremental -d 'use incremental compilation'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l include-default-paths -d 'include default paths in addition to the provided ones'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l dry-run -d 'dry run; don\'t build anything'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l dump-bootstrap-shims -d 'Indicates whether to dump the work done from bootstrap shims'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l json-output -d 'use message-format=json'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l bypass-bootstrap-lock -d 'Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l llvm-profile-generate -d 'generate PGO profile with llvm built for rustc'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l enable-bolt-settings -d 'Enable BOLT link flags'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l skip-stage0-validation -d 'Skip stage0 compiler validation'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -s h -l help -d 'Print help (see more with \'--help\')'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l config -d 'TOML configuration file for build' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l build-dir -d 'Build directory, overrides `build.build-dir` in `config.toml`' -r -f -a "(__fish_complete_directories)"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l build -d 'build target of the stage0 compiler' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l host -d 'host targets to build' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l target -d 'target targets to build' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l exclude -d 'build paths to exclude' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l skip -d 'build paths to skip' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l rustc-error-format -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l on-fail -d 'command to run on failure' -r -f -a "(__fish_complete_command)"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l stage -d 'stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l keep-stage -d 'stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l keep-stage-std -d 'stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l src -d 'path to the root of the rust checkout' -r -f -a "(__fish_complete_directories)"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -s j -l jobs -d 'number of jobs to run in parallel' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l error-format -d 'rustc error format' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l reproducible-artifact -d 'Additional reproducible artifacts that should be added to the reproducible artifacts archive' -r
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l set -d 'override options in config.toml' -r -f
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -s v -l verbose -d 'use verbose output (-vv for very verbose)'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -s i -l incremental -d 'use incremental compilation'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l include-default-paths -d 'include default paths in addition to the provided ones'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l dry-run -d 'dry run; don\'t build anything'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l dump-bootstrap-shims -d 'Indicates whether to dump the work done from bootstrap shims'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l json-output -d 'use message-format=json'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l bypass-bootstrap-lock -d 'Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l llvm-profile-generate -d 'generate PGO profile with llvm built for rustc'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l enable-bolt-settings -d 'Enable BOLT link flags'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -l skip-stage0-validation -d 'Skip stage0 compiler validation'
+complete -c x -n "__fish_x_using_subcommand perf; and __fish_seen_subcommand_from compare" -s h -l help -d 'Print help (see more with \'--help\')'
diff --git a/src/etc/completions/x.ps1 b/src/etc/completions/x.ps1
index fa833b6876a..b848b95d88f 100644
--- a/src/etc/completions/x.ps1
+++ b/src/etc/completions/x.ps1
@@ -74,7 +74,7 @@ Register-ArgumentCompleter -Native -CommandName 'x' -ScriptBlock {
             [CompletionResult]::new('setup', 'setup', [CompletionResultType]::ParameterValue, 'Set up the environment for development')
             [CompletionResult]::new('suggest', 'suggest', [CompletionResultType]::ParameterValue, 'Suggest a subset of tests to run, based on modified files')
             [CompletionResult]::new('vendor', 'vendor', [CompletionResultType]::ParameterValue, 'Vendor dependencies')
-            [CompletionResult]::new('perf', 'perf', [CompletionResultType]::ParameterValue, 'Perform profiling and benchmarking of the compiler using the `rustc-perf-wrapper` tool')
+            [CompletionResult]::new('perf', 'perf', [CompletionResultType]::ParameterValue, 'Perform profiling and benchmarking of the compiler using `rustc-perf`')
             break
         }
         'x;build' {
@@ -754,6 +754,223 @@ Register-ArgumentCompleter -Native -CommandName 'x' -ScriptBlock {
             break
         }
         'x;perf' {
+            [CompletionResult]::new('--config', '--config', [CompletionResultType]::ParameterName, 'TOML configuration file for build')
+            [CompletionResult]::new('--build-dir', '--build-dir', [CompletionResultType]::ParameterName, 'Build directory, overrides `build.build-dir` in `config.toml`')
+            [CompletionResult]::new('--build', '--build', [CompletionResultType]::ParameterName, 'build target of the stage0 compiler')
+            [CompletionResult]::new('--host', '--host', [CompletionResultType]::ParameterName, 'host targets to build')
+            [CompletionResult]::new('--target', '--target', [CompletionResultType]::ParameterName, 'target targets to build')
+            [CompletionResult]::new('--exclude', '--exclude', [CompletionResultType]::ParameterName, 'build paths to exclude')
+            [CompletionResult]::new('--skip', '--skip', [CompletionResultType]::ParameterName, 'build paths to skip')
+            [CompletionResult]::new('--rustc-error-format', '--rustc-error-format', [CompletionResultType]::ParameterName, 'rustc-error-format')
+            [CompletionResult]::new('--on-fail', '--on-fail', [CompletionResultType]::ParameterName, 'command to run on failure')
+            [CompletionResult]::new('--stage', '--stage', [CompletionResultType]::ParameterName, 'stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)')
+            [CompletionResult]::new('--keep-stage', '--keep-stage', [CompletionResultType]::ParameterName, 'stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)')
+            [CompletionResult]::new('--keep-stage-std', '--keep-stage-std', [CompletionResultType]::ParameterName, 'stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)')
+            [CompletionResult]::new('--src', '--src', [CompletionResultType]::ParameterName, 'path to the root of the rust checkout')
+            [CompletionResult]::new('-j', '-j', [CompletionResultType]::ParameterName, 'number of jobs to run in parallel')
+            [CompletionResult]::new('--jobs', '--jobs', [CompletionResultType]::ParameterName, 'number of jobs to run in parallel')
+            [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
+            [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
+            [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
+            [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
+            [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
+            [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
+            [CompletionResult]::new('--reproducible-artifact', '--reproducible-artifact', [CompletionResultType]::ParameterName, 'Additional reproducible artifacts that should be added to the reproducible artifacts archive')
+            [CompletionResult]::new('--set', '--set', [CompletionResultType]::ParameterName, 'override options in config.toml')
+            [CompletionResult]::new('-v', '-v', [CompletionResultType]::ParameterName, 'use verbose output (-vv for very verbose)')
+            [CompletionResult]::new('--verbose', '--verbose', [CompletionResultType]::ParameterName, 'use verbose output (-vv for very verbose)')
+            [CompletionResult]::new('-i', '-i', [CompletionResultType]::ParameterName, 'use incremental compilation')
+            [CompletionResult]::new('--incremental', '--incremental', [CompletionResultType]::ParameterName, 'use incremental compilation')
+            [CompletionResult]::new('--include-default-paths', '--include-default-paths', [CompletionResultType]::ParameterName, 'include default paths in addition to the provided ones')
+            [CompletionResult]::new('--dry-run', '--dry-run', [CompletionResultType]::ParameterName, 'dry run; don''t build anything')
+            [CompletionResult]::new('--dump-bootstrap-shims', '--dump-bootstrap-shims', [CompletionResultType]::ParameterName, 'Indicates whether to dump the work done from bootstrap shims')
+            [CompletionResult]::new('--json-output', '--json-output', [CompletionResultType]::ParameterName, 'use message-format=json')
+            [CompletionResult]::new('--bypass-bootstrap-lock', '--bypass-bootstrap-lock', [CompletionResultType]::ParameterName, 'Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)')
+            [CompletionResult]::new('--llvm-profile-generate', '--llvm-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with llvm built for rustc')
+            [CompletionResult]::new('--enable-bolt-settings', '--enable-bolt-settings', [CompletionResultType]::ParameterName, 'Enable BOLT link flags')
+            [CompletionResult]::new('--skip-stage0-validation', '--skip-stage0-validation', [CompletionResultType]::ParameterName, 'Skip stage0 compiler validation')
+            [CompletionResult]::new('-h', '-h', [CompletionResultType]::ParameterName, 'Print help (see more with ''--help'')')
+            [CompletionResult]::new('--help', '--help', [CompletionResultType]::ParameterName, 'Print help (see more with ''--help'')')
+            [CompletionResult]::new('eprintln', 'eprintln', [CompletionResultType]::ParameterValue, 'Run `profile_local eprintln`. This executes the compiler on the given benchmarks and stores its stderr output')
+            [CompletionResult]::new('samply', 'samply', [CompletionResultType]::ParameterValue, 'Run `profile_local samply` This executes the compiler on the given benchmarks and profiles it with `samply`. You need to install `samply`, e.g. using `cargo install samply`')
+            [CompletionResult]::new('cachegrind', 'cachegrind', [CompletionResultType]::ParameterValue, 'Run `profile_local cachegrind`. This executes the compiler on the given benchmarks under `Cachegrind`')
+            [CompletionResult]::new('benchmark', 'benchmark', [CompletionResultType]::ParameterValue, 'Run compile benchmarks with a locally built compiler')
+            [CompletionResult]::new('compare', 'compare', [CompletionResultType]::ParameterValue, 'Compare the results of two previously executed benchmark runs')
+            break
+        }
+        'x;perf;eprintln' {
+            [CompletionResult]::new('--include', '--include', [CompletionResultType]::ParameterName, 'Select the benchmarks that you want to run (separated by commas). If unspecified, all benchmarks will be executed')
+            [CompletionResult]::new('--exclude', '--exclude', [CompletionResultType]::ParameterName, 'Select the benchmarks matching a prefix in this comma-separated list that you don''t want to run')
+            [CompletionResult]::new('--scenarios', '--scenarios', [CompletionResultType]::ParameterName, 'Select the scenarios that should be benchmarked')
+            [CompletionResult]::new('--profiles', '--profiles', [CompletionResultType]::ParameterName, 'Select the profiles that should be benchmarked')
+            [CompletionResult]::new('--config', '--config', [CompletionResultType]::ParameterName, 'TOML configuration file for build')
+            [CompletionResult]::new('--build-dir', '--build-dir', [CompletionResultType]::ParameterName, 'Build directory, overrides `build.build-dir` in `config.toml`')
+            [CompletionResult]::new('--build', '--build', [CompletionResultType]::ParameterName, 'build target of the stage0 compiler')
+            [CompletionResult]::new('--host', '--host', [CompletionResultType]::ParameterName, 'host targets to build')
+            [CompletionResult]::new('--target', '--target', [CompletionResultType]::ParameterName, 'target targets to build')
+            [CompletionResult]::new('--skip', '--skip', [CompletionResultType]::ParameterName, 'build paths to skip')
+            [CompletionResult]::new('--rustc-error-format', '--rustc-error-format', [CompletionResultType]::ParameterName, 'rustc-error-format')
+            [CompletionResult]::new('--on-fail', '--on-fail', [CompletionResultType]::ParameterName, 'command to run on failure')
+            [CompletionResult]::new('--stage', '--stage', [CompletionResultType]::ParameterName, 'stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)')
+            [CompletionResult]::new('--keep-stage', '--keep-stage', [CompletionResultType]::ParameterName, 'stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)')
+            [CompletionResult]::new('--keep-stage-std', '--keep-stage-std', [CompletionResultType]::ParameterName, 'stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)')
+            [CompletionResult]::new('--src', '--src', [CompletionResultType]::ParameterName, 'path to the root of the rust checkout')
+            [CompletionResult]::new('-j', '-j', [CompletionResultType]::ParameterName, 'number of jobs to run in parallel')
+            [CompletionResult]::new('--jobs', '--jobs', [CompletionResultType]::ParameterName, 'number of jobs to run in parallel')
+            [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
+            [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
+            [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
+            [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
+            [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
+            [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
+            [CompletionResult]::new('--reproducible-artifact', '--reproducible-artifact', [CompletionResultType]::ParameterName, 'Additional reproducible artifacts that should be added to the reproducible artifacts archive')
+            [CompletionResult]::new('--set', '--set', [CompletionResultType]::ParameterName, 'override options in config.toml')
+            [CompletionResult]::new('-v', '-v', [CompletionResultType]::ParameterName, 'use verbose output (-vv for very verbose)')
+            [CompletionResult]::new('--verbose', '--verbose', [CompletionResultType]::ParameterName, 'use verbose output (-vv for very verbose)')
+            [CompletionResult]::new('-i', '-i', [CompletionResultType]::ParameterName, 'use incremental compilation')
+            [CompletionResult]::new('--incremental', '--incremental', [CompletionResultType]::ParameterName, 'use incremental compilation')
+            [CompletionResult]::new('--include-default-paths', '--include-default-paths', [CompletionResultType]::ParameterName, 'include default paths in addition to the provided ones')
+            [CompletionResult]::new('--dry-run', '--dry-run', [CompletionResultType]::ParameterName, 'dry run; don''t build anything')
+            [CompletionResult]::new('--dump-bootstrap-shims', '--dump-bootstrap-shims', [CompletionResultType]::ParameterName, 'Indicates whether to dump the work done from bootstrap shims')
+            [CompletionResult]::new('--json-output', '--json-output', [CompletionResultType]::ParameterName, 'use message-format=json')
+            [CompletionResult]::new('--bypass-bootstrap-lock', '--bypass-bootstrap-lock', [CompletionResultType]::ParameterName, 'Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)')
+            [CompletionResult]::new('--llvm-profile-generate', '--llvm-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with llvm built for rustc')
+            [CompletionResult]::new('--enable-bolt-settings', '--enable-bolt-settings', [CompletionResultType]::ParameterName, 'Enable BOLT link flags')
+            [CompletionResult]::new('--skip-stage0-validation', '--skip-stage0-validation', [CompletionResultType]::ParameterName, 'Skip stage0 compiler validation')
+            [CompletionResult]::new('-h', '-h', [CompletionResultType]::ParameterName, 'Print help (see more with ''--help'')')
+            [CompletionResult]::new('--help', '--help', [CompletionResultType]::ParameterName, 'Print help (see more with ''--help'')')
+            break
+        }
+        'x;perf;samply' {
+            [CompletionResult]::new('--include', '--include', [CompletionResultType]::ParameterName, 'Select the benchmarks that you want to run (separated by commas). If unspecified, all benchmarks will be executed')
+            [CompletionResult]::new('--exclude', '--exclude', [CompletionResultType]::ParameterName, 'Select the benchmarks matching a prefix in this comma-separated list that you don''t want to run')
+            [CompletionResult]::new('--scenarios', '--scenarios', [CompletionResultType]::ParameterName, 'Select the scenarios that should be benchmarked')
+            [CompletionResult]::new('--profiles', '--profiles', [CompletionResultType]::ParameterName, 'Select the profiles that should be benchmarked')
+            [CompletionResult]::new('--config', '--config', [CompletionResultType]::ParameterName, 'TOML configuration file for build')
+            [CompletionResult]::new('--build-dir', '--build-dir', [CompletionResultType]::ParameterName, 'Build directory, overrides `build.build-dir` in `config.toml`')
+            [CompletionResult]::new('--build', '--build', [CompletionResultType]::ParameterName, 'build target of the stage0 compiler')
+            [CompletionResult]::new('--host', '--host', [CompletionResultType]::ParameterName, 'host targets to build')
+            [CompletionResult]::new('--target', '--target', [CompletionResultType]::ParameterName, 'target targets to build')
+            [CompletionResult]::new('--skip', '--skip', [CompletionResultType]::ParameterName, 'build paths to skip')
+            [CompletionResult]::new('--rustc-error-format', '--rustc-error-format', [CompletionResultType]::ParameterName, 'rustc-error-format')
+            [CompletionResult]::new('--on-fail', '--on-fail', [CompletionResultType]::ParameterName, 'command to run on failure')
+            [CompletionResult]::new('--stage', '--stage', [CompletionResultType]::ParameterName, 'stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)')
+            [CompletionResult]::new('--keep-stage', '--keep-stage', [CompletionResultType]::ParameterName, 'stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)')
+            [CompletionResult]::new('--keep-stage-std', '--keep-stage-std', [CompletionResultType]::ParameterName, 'stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)')
+            [CompletionResult]::new('--src', '--src', [CompletionResultType]::ParameterName, 'path to the root of the rust checkout')
+            [CompletionResult]::new('-j', '-j', [CompletionResultType]::ParameterName, 'number of jobs to run in parallel')
+            [CompletionResult]::new('--jobs', '--jobs', [CompletionResultType]::ParameterName, 'number of jobs to run in parallel')
+            [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
+            [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
+            [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
+            [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
+            [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
+            [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
+            [CompletionResult]::new('--reproducible-artifact', '--reproducible-artifact', [CompletionResultType]::ParameterName, 'Additional reproducible artifacts that should be added to the reproducible artifacts archive')
+            [CompletionResult]::new('--set', '--set', [CompletionResultType]::ParameterName, 'override options in config.toml')
+            [CompletionResult]::new('-v', '-v', [CompletionResultType]::ParameterName, 'use verbose output (-vv for very verbose)')
+            [CompletionResult]::new('--verbose', '--verbose', [CompletionResultType]::ParameterName, 'use verbose output (-vv for very verbose)')
+            [CompletionResult]::new('-i', '-i', [CompletionResultType]::ParameterName, 'use incremental compilation')
+            [CompletionResult]::new('--incremental', '--incremental', [CompletionResultType]::ParameterName, 'use incremental compilation')
+            [CompletionResult]::new('--include-default-paths', '--include-default-paths', [CompletionResultType]::ParameterName, 'include default paths in addition to the provided ones')
+            [CompletionResult]::new('--dry-run', '--dry-run', [CompletionResultType]::ParameterName, 'dry run; don''t build anything')
+            [CompletionResult]::new('--dump-bootstrap-shims', '--dump-bootstrap-shims', [CompletionResultType]::ParameterName, 'Indicates whether to dump the work done from bootstrap shims')
+            [CompletionResult]::new('--json-output', '--json-output', [CompletionResultType]::ParameterName, 'use message-format=json')
+            [CompletionResult]::new('--bypass-bootstrap-lock', '--bypass-bootstrap-lock', [CompletionResultType]::ParameterName, 'Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)')
+            [CompletionResult]::new('--llvm-profile-generate', '--llvm-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with llvm built for rustc')
+            [CompletionResult]::new('--enable-bolt-settings', '--enable-bolt-settings', [CompletionResultType]::ParameterName, 'Enable BOLT link flags')
+            [CompletionResult]::new('--skip-stage0-validation', '--skip-stage0-validation', [CompletionResultType]::ParameterName, 'Skip stage0 compiler validation')
+            [CompletionResult]::new('-h', '-h', [CompletionResultType]::ParameterName, 'Print help (see more with ''--help'')')
+            [CompletionResult]::new('--help', '--help', [CompletionResultType]::ParameterName, 'Print help (see more with ''--help'')')
+            break
+        }
+        'x;perf;cachegrind' {
+            [CompletionResult]::new('--include', '--include', [CompletionResultType]::ParameterName, 'Select the benchmarks that you want to run (separated by commas). If unspecified, all benchmarks will be executed')
+            [CompletionResult]::new('--exclude', '--exclude', [CompletionResultType]::ParameterName, 'Select the benchmarks matching a prefix in this comma-separated list that you don''t want to run')
+            [CompletionResult]::new('--scenarios', '--scenarios', [CompletionResultType]::ParameterName, 'Select the scenarios that should be benchmarked')
+            [CompletionResult]::new('--profiles', '--profiles', [CompletionResultType]::ParameterName, 'Select the profiles that should be benchmarked')
+            [CompletionResult]::new('--config', '--config', [CompletionResultType]::ParameterName, 'TOML configuration file for build')
+            [CompletionResult]::new('--build-dir', '--build-dir', [CompletionResultType]::ParameterName, 'Build directory, overrides `build.build-dir` in `config.toml`')
+            [CompletionResult]::new('--build', '--build', [CompletionResultType]::ParameterName, 'build target of the stage0 compiler')
+            [CompletionResult]::new('--host', '--host', [CompletionResultType]::ParameterName, 'host targets to build')
+            [CompletionResult]::new('--target', '--target', [CompletionResultType]::ParameterName, 'target targets to build')
+            [CompletionResult]::new('--skip', '--skip', [CompletionResultType]::ParameterName, 'build paths to skip')
+            [CompletionResult]::new('--rustc-error-format', '--rustc-error-format', [CompletionResultType]::ParameterName, 'rustc-error-format')
+            [CompletionResult]::new('--on-fail', '--on-fail', [CompletionResultType]::ParameterName, 'command to run on failure')
+            [CompletionResult]::new('--stage', '--stage', [CompletionResultType]::ParameterName, 'stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)')
+            [CompletionResult]::new('--keep-stage', '--keep-stage', [CompletionResultType]::ParameterName, 'stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)')
+            [CompletionResult]::new('--keep-stage-std', '--keep-stage-std', [CompletionResultType]::ParameterName, 'stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)')
+            [CompletionResult]::new('--src', '--src', [CompletionResultType]::ParameterName, 'path to the root of the rust checkout')
+            [CompletionResult]::new('-j', '-j', [CompletionResultType]::ParameterName, 'number of jobs to run in parallel')
+            [CompletionResult]::new('--jobs', '--jobs', [CompletionResultType]::ParameterName, 'number of jobs to run in parallel')
+            [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
+            [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
+            [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
+            [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
+            [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
+            [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
+            [CompletionResult]::new('--reproducible-artifact', '--reproducible-artifact', [CompletionResultType]::ParameterName, 'Additional reproducible artifacts that should be added to the reproducible artifacts archive')
+            [CompletionResult]::new('--set', '--set', [CompletionResultType]::ParameterName, 'override options in config.toml')
+            [CompletionResult]::new('-v', '-v', [CompletionResultType]::ParameterName, 'use verbose output (-vv for very verbose)')
+            [CompletionResult]::new('--verbose', '--verbose', [CompletionResultType]::ParameterName, 'use verbose output (-vv for very verbose)')
+            [CompletionResult]::new('-i', '-i', [CompletionResultType]::ParameterName, 'use incremental compilation')
+            [CompletionResult]::new('--incremental', '--incremental', [CompletionResultType]::ParameterName, 'use incremental compilation')
+            [CompletionResult]::new('--include-default-paths', '--include-default-paths', [CompletionResultType]::ParameterName, 'include default paths in addition to the provided ones')
+            [CompletionResult]::new('--dry-run', '--dry-run', [CompletionResultType]::ParameterName, 'dry run; don''t build anything')
+            [CompletionResult]::new('--dump-bootstrap-shims', '--dump-bootstrap-shims', [CompletionResultType]::ParameterName, 'Indicates whether to dump the work done from bootstrap shims')
+            [CompletionResult]::new('--json-output', '--json-output', [CompletionResultType]::ParameterName, 'use message-format=json')
+            [CompletionResult]::new('--bypass-bootstrap-lock', '--bypass-bootstrap-lock', [CompletionResultType]::ParameterName, 'Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)')
+            [CompletionResult]::new('--llvm-profile-generate', '--llvm-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with llvm built for rustc')
+            [CompletionResult]::new('--enable-bolt-settings', '--enable-bolt-settings', [CompletionResultType]::ParameterName, 'Enable BOLT link flags')
+            [CompletionResult]::new('--skip-stage0-validation', '--skip-stage0-validation', [CompletionResultType]::ParameterName, 'Skip stage0 compiler validation')
+            [CompletionResult]::new('-h', '-h', [CompletionResultType]::ParameterName, 'Print help (see more with ''--help'')')
+            [CompletionResult]::new('--help', '--help', [CompletionResultType]::ParameterName, 'Print help (see more with ''--help'')')
+            break
+        }
+        'x;perf;benchmark' {
+            [CompletionResult]::new('--include', '--include', [CompletionResultType]::ParameterName, 'Select the benchmarks that you want to run (separated by commas). If unspecified, all benchmarks will be executed')
+            [CompletionResult]::new('--exclude', '--exclude', [CompletionResultType]::ParameterName, 'Select the benchmarks matching a prefix in this comma-separated list that you don''t want to run')
+            [CompletionResult]::new('--scenarios', '--scenarios', [CompletionResultType]::ParameterName, 'Select the scenarios that should be benchmarked')
+            [CompletionResult]::new('--profiles', '--profiles', [CompletionResultType]::ParameterName, 'Select the profiles that should be benchmarked')
+            [CompletionResult]::new('--config', '--config', [CompletionResultType]::ParameterName, 'TOML configuration file for build')
+            [CompletionResult]::new('--build-dir', '--build-dir', [CompletionResultType]::ParameterName, 'Build directory, overrides `build.build-dir` in `config.toml`')
+            [CompletionResult]::new('--build', '--build', [CompletionResultType]::ParameterName, 'build target of the stage0 compiler')
+            [CompletionResult]::new('--host', '--host', [CompletionResultType]::ParameterName, 'host targets to build')
+            [CompletionResult]::new('--target', '--target', [CompletionResultType]::ParameterName, 'target targets to build')
+            [CompletionResult]::new('--skip', '--skip', [CompletionResultType]::ParameterName, 'build paths to skip')
+            [CompletionResult]::new('--rustc-error-format', '--rustc-error-format', [CompletionResultType]::ParameterName, 'rustc-error-format')
+            [CompletionResult]::new('--on-fail', '--on-fail', [CompletionResultType]::ParameterName, 'command to run on failure')
+            [CompletionResult]::new('--stage', '--stage', [CompletionResultType]::ParameterName, 'stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)')
+            [CompletionResult]::new('--keep-stage', '--keep-stage', [CompletionResultType]::ParameterName, 'stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)')
+            [CompletionResult]::new('--keep-stage-std', '--keep-stage-std', [CompletionResultType]::ParameterName, 'stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)')
+            [CompletionResult]::new('--src', '--src', [CompletionResultType]::ParameterName, 'path to the root of the rust checkout')
+            [CompletionResult]::new('-j', '-j', [CompletionResultType]::ParameterName, 'number of jobs to run in parallel')
+            [CompletionResult]::new('--jobs', '--jobs', [CompletionResultType]::ParameterName, 'number of jobs to run in parallel')
+            [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
+            [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
+            [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
+            [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
+            [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
+            [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
+            [CompletionResult]::new('--reproducible-artifact', '--reproducible-artifact', [CompletionResultType]::ParameterName, 'Additional reproducible artifacts that should be added to the reproducible artifacts archive')
+            [CompletionResult]::new('--set', '--set', [CompletionResultType]::ParameterName, 'override options in config.toml')
+            [CompletionResult]::new('-v', '-v', [CompletionResultType]::ParameterName, 'use verbose output (-vv for very verbose)')
+            [CompletionResult]::new('--verbose', '--verbose', [CompletionResultType]::ParameterName, 'use verbose output (-vv for very verbose)')
+            [CompletionResult]::new('-i', '-i', [CompletionResultType]::ParameterName, 'use incremental compilation')
+            [CompletionResult]::new('--incremental', '--incremental', [CompletionResultType]::ParameterName, 'use incremental compilation')
+            [CompletionResult]::new('--include-default-paths', '--include-default-paths', [CompletionResultType]::ParameterName, 'include default paths in addition to the provided ones')
+            [CompletionResult]::new('--dry-run', '--dry-run', [CompletionResultType]::ParameterName, 'dry run; don''t build anything')
+            [CompletionResult]::new('--dump-bootstrap-shims', '--dump-bootstrap-shims', [CompletionResultType]::ParameterName, 'Indicates whether to dump the work done from bootstrap shims')
+            [CompletionResult]::new('--json-output', '--json-output', [CompletionResultType]::ParameterName, 'use message-format=json')
+            [CompletionResult]::new('--bypass-bootstrap-lock', '--bypass-bootstrap-lock', [CompletionResultType]::ParameterName, 'Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)')
+            [CompletionResult]::new('--llvm-profile-generate', '--llvm-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with llvm built for rustc')
+            [CompletionResult]::new('--enable-bolt-settings', '--enable-bolt-settings', [CompletionResultType]::ParameterName, 'Enable BOLT link flags')
+            [CompletionResult]::new('--skip-stage0-validation', '--skip-stage0-validation', [CompletionResultType]::ParameterName, 'Skip stage0 compiler validation')
+            [CompletionResult]::new('-h', '-h', [CompletionResultType]::ParameterName, 'Print help (see more with ''--help'')')
+            [CompletionResult]::new('--help', '--help', [CompletionResultType]::ParameterName, 'Print help (see more with ''--help'')')
+            break
+        }
+        'x;perf;compare' {
             [CompletionResult]::new('--config', '--config', [CompletionResultType]::ParameterName, 'TOML configuration file for build')
             [CompletionResult]::new('--build-dir', '--build-dir', [CompletionResultType]::ParameterName, 'Build directory, overrides `build.build-dir` in `config.toml`')
             [CompletionResult]::new('--build', '--build', [CompletionResultType]::ParameterName, 'build target of the stage0 compiler')
diff --git a/src/etc/completions/x.py.fish b/src/etc/completions/x.py.fish
index 07144ad22d1..ff4f7425da6 100644
--- a/src/etc/completions/x.py.fish
+++ b/src/etc/completions/x.py.fish
@@ -73,7 +73,7 @@ complete -c x.py -n "__fish_x.py_needs_command" -a "run" -d 'Run tools contained
 complete -c x.py -n "__fish_x.py_needs_command" -a "setup" -d 'Set up the environment for development'
 complete -c x.py -n "__fish_x.py_needs_command" -a "suggest" -d 'Suggest a subset of tests to run, based on modified files'
 complete -c x.py -n "__fish_x.py_needs_command" -a "vendor" -d 'Vendor dependencies'
-complete -c x.py -n "__fish_x.py_needs_command" -a "perf" -d 'Perform profiling and benchmarking of the compiler using the `rustc-perf-wrapper` tool'
+complete -c x.py -n "__fish_x.py_needs_command" -a "perf" -d 'Perform profiling and benchmarking of the compiler using `rustc-perf`'
 complete -c x.py -n "__fish_x.py_using_subcommand build" -l config -d 'TOML configuration file for build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand build" -l build-dir -d 'Build directory, overrides `build.build-dir` in `config.toml`' -r -f -a "(__fish_complete_directories)"
 complete -c x.py -n "__fish_x.py_using_subcommand build" -l build -d 'build target of the stage0 compiler' -r -f
@@ -638,36 +638,218 @@ complete -c x.py -n "__fish_x.py_using_subcommand vendor" -l llvm-profile-genera
 complete -c x.py -n "__fish_x.py_using_subcommand vendor" -l enable-bolt-settings -d 'Enable BOLT link flags'
 complete -c x.py -n "__fish_x.py_using_subcommand vendor" -l skip-stage0-validation -d 'Skip stage0 compiler validation'
 complete -c x.py -n "__fish_x.py_using_subcommand vendor" -s h -l help -d 'Print help (see more with \'--help\')'
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l config -d 'TOML configuration file for build' -r -F
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l build-dir -d 'Build directory, overrides `build.build-dir` in `config.toml`' -r -f -a "(__fish_complete_directories)"
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l build -d 'build target of the stage0 compiler' -r -f
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l host -d 'host targets to build' -r -f
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l target -d 'target targets to build' -r -f
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l exclude -d 'build paths to exclude' -r -F
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l skip -d 'build paths to skip' -r -F
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l rustc-error-format -r -f
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l on-fail -d 'command to run on failure' -r -f -a "(__fish_complete_command)"
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l stage -d 'stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)' -r -f
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l keep-stage -d 'stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l keep-stage-std -d 'stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l src -d 'path to the root of the rust checkout' -r -f -a "(__fish_complete_directories)"
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -s j -l jobs -d 'number of jobs to run in parallel' -r -f
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l error-format -d 'rustc error format' -r -f
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l reproducible-artifact -d 'Additional reproducible artifacts that should be added to the reproducible artifacts archive' -r
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l set -d 'override options in config.toml' -r -f
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -s v -l verbose -d 'use verbose output (-vv for very verbose)'
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -s i -l incremental -d 'use incremental compilation'
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l include-default-paths -d 'include default paths in addition to the provided ones'
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l dry-run -d 'dry run; don\'t build anything'
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l dump-bootstrap-shims -d 'Indicates whether to dump the work done from bootstrap shims'
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l json-output -d 'use message-format=json'
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l bypass-bootstrap-lock -d 'Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)'
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l llvm-profile-generate -d 'generate PGO profile with llvm built for rustc'
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l enable-bolt-settings -d 'Enable BOLT link flags'
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l skip-stage0-validation -d 'Skip stage0 compiler validation'
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -s h -l help -d 'Print help (see more with \'--help\')'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l config -d 'TOML configuration file for build' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l build-dir -d 'Build directory, overrides `build.build-dir` in `config.toml`' -r -f -a "(__fish_complete_directories)"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l build -d 'build target of the stage0 compiler' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l host -d 'host targets to build' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l target -d 'target targets to build' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l exclude -d 'build paths to exclude' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l skip -d 'build paths to skip' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l rustc-error-format -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l on-fail -d 'command to run on failure' -r -f -a "(__fish_complete_command)"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l stage -d 'stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l keep-stage -d 'stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l keep-stage-std -d 'stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l src -d 'path to the root of the rust checkout' -r -f -a "(__fish_complete_directories)"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -s j -l jobs -d 'number of jobs to run in parallel' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l error-format -d 'rustc error format' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l reproducible-artifact -d 'Additional reproducible artifacts that should be added to the reproducible artifacts archive' -r
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l set -d 'override options in config.toml' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -s v -l verbose -d 'use verbose output (-vv for very verbose)'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -s i -l incremental -d 'use incremental compilation'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l include-default-paths -d 'include default paths in addition to the provided ones'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l dry-run -d 'dry run; don\'t build anything'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l dump-bootstrap-shims -d 'Indicates whether to dump the work done from bootstrap shims'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l json-output -d 'use message-format=json'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l bypass-bootstrap-lock -d 'Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l llvm-profile-generate -d 'generate PGO profile with llvm built for rustc'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l enable-bolt-settings -d 'Enable BOLT link flags'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -l skip-stage0-validation -d 'Skip stage0 compiler validation'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -s h -l help -d 'Print help (see more with \'--help\')'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -a "eprintln" -d 'Run `profile_local eprintln`. This executes the compiler on the given benchmarks and stores its stderr output'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -a "samply" -d 'Run `profile_local samply` This executes the compiler on the given benchmarks and profiles it with `samply`. You need to install `samply`, e.g. using `cargo install samply`'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -a "cachegrind" -d 'Run `profile_local cachegrind`. This executes the compiler on the given benchmarks under `Cachegrind`'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -a "benchmark" -d 'Run compile benchmarks with a locally built compiler'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and not __fish_seen_subcommand_from eprintln samply cachegrind benchmark compare" -a "compare" -d 'Compare the results of two previously executed benchmark runs'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l include -d 'Select the benchmarks that you want to run (separated by commas). If unspecified, all benchmarks will be executed' -r
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l exclude -d 'Select the benchmarks matching a prefix in this comma-separated list that you don\'t want to run' -r
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l scenarios -d 'Select the scenarios that should be benchmarked' -r -f -a "{Full\t'',IncrFull\t'',IncrUnchanged\t'',IncrPatched\t''}"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l profiles -d 'Select the profiles that should be benchmarked' -r -f -a "{Check\t'',Debug\t'',Doc\t'',Opt\t'',Clippy\t''}"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l config -d 'TOML configuration file for build' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l build-dir -d 'Build directory, overrides `build.build-dir` in `config.toml`' -r -f -a "(__fish_complete_directories)"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l build -d 'build target of the stage0 compiler' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l host -d 'host targets to build' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l target -d 'target targets to build' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l skip -d 'build paths to skip' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l rustc-error-format -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l on-fail -d 'command to run on failure' -r -f -a "(__fish_complete_command)"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l stage -d 'stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l keep-stage -d 'stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l keep-stage-std -d 'stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l src -d 'path to the root of the rust checkout' -r -f -a "(__fish_complete_directories)"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -s j -l jobs -d 'number of jobs to run in parallel' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l error-format -d 'rustc error format' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l reproducible-artifact -d 'Additional reproducible artifacts that should be added to the reproducible artifacts archive' -r
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l set -d 'override options in config.toml' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -s v -l verbose -d 'use verbose output (-vv for very verbose)'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -s i -l incremental -d 'use incremental compilation'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l include-default-paths -d 'include default paths in addition to the provided ones'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l dry-run -d 'dry run; don\'t build anything'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l dump-bootstrap-shims -d 'Indicates whether to dump the work done from bootstrap shims'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l json-output -d 'use message-format=json'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l bypass-bootstrap-lock -d 'Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l llvm-profile-generate -d 'generate PGO profile with llvm built for rustc'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l enable-bolt-settings -d 'Enable BOLT link flags'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -l skip-stage0-validation -d 'Skip stage0 compiler validation'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from eprintln" -s h -l help -d 'Print help (see more with \'--help\')'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l include -d 'Select the benchmarks that you want to run (separated by commas). If unspecified, all benchmarks will be executed' -r
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l exclude -d 'Select the benchmarks matching a prefix in this comma-separated list that you don\'t want to run' -r
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l scenarios -d 'Select the scenarios that should be benchmarked' -r -f -a "{Full\t'',IncrFull\t'',IncrUnchanged\t'',IncrPatched\t''}"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l profiles -d 'Select the profiles that should be benchmarked' -r -f -a "{Check\t'',Debug\t'',Doc\t'',Opt\t'',Clippy\t''}"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l config -d 'TOML configuration file for build' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l build-dir -d 'Build directory, overrides `build.build-dir` in `config.toml`' -r -f -a "(__fish_complete_directories)"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l build -d 'build target of the stage0 compiler' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l host -d 'host targets to build' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l target -d 'target targets to build' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l skip -d 'build paths to skip' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l rustc-error-format -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l on-fail -d 'command to run on failure' -r -f -a "(__fish_complete_command)"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l stage -d 'stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l keep-stage -d 'stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l keep-stage-std -d 'stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l src -d 'path to the root of the rust checkout' -r -f -a "(__fish_complete_directories)"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -s j -l jobs -d 'number of jobs to run in parallel' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l error-format -d 'rustc error format' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l reproducible-artifact -d 'Additional reproducible artifacts that should be added to the reproducible artifacts archive' -r
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l set -d 'override options in config.toml' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -s v -l verbose -d 'use verbose output (-vv for very verbose)'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -s i -l incremental -d 'use incremental compilation'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l include-default-paths -d 'include default paths in addition to the provided ones'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l dry-run -d 'dry run; don\'t build anything'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l dump-bootstrap-shims -d 'Indicates whether to dump the work done from bootstrap shims'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l json-output -d 'use message-format=json'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l bypass-bootstrap-lock -d 'Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l llvm-profile-generate -d 'generate PGO profile with llvm built for rustc'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l enable-bolt-settings -d 'Enable BOLT link flags'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -l skip-stage0-validation -d 'Skip stage0 compiler validation'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from samply" -s h -l help -d 'Print help (see more with \'--help\')'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l include -d 'Select the benchmarks that you want to run (separated by commas). If unspecified, all benchmarks will be executed' -r
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l exclude -d 'Select the benchmarks matching a prefix in this comma-separated list that you don\'t want to run' -r
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l scenarios -d 'Select the scenarios that should be benchmarked' -r -f -a "{Full\t'',IncrFull\t'',IncrUnchanged\t'',IncrPatched\t''}"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l profiles -d 'Select the profiles that should be benchmarked' -r -f -a "{Check\t'',Debug\t'',Doc\t'',Opt\t'',Clippy\t''}"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l config -d 'TOML configuration file for build' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l build-dir -d 'Build directory, overrides `build.build-dir` in `config.toml`' -r -f -a "(__fish_complete_directories)"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l build -d 'build target of the stage0 compiler' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l host -d 'host targets to build' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l target -d 'target targets to build' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l skip -d 'build paths to skip' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l rustc-error-format -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l on-fail -d 'command to run on failure' -r -f -a "(__fish_complete_command)"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l stage -d 'stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l keep-stage -d 'stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l keep-stage-std -d 'stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l src -d 'path to the root of the rust checkout' -r -f -a "(__fish_complete_directories)"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -s j -l jobs -d 'number of jobs to run in parallel' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l error-format -d 'rustc error format' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l reproducible-artifact -d 'Additional reproducible artifacts that should be added to the reproducible artifacts archive' -r
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l set -d 'override options in config.toml' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -s v -l verbose -d 'use verbose output (-vv for very verbose)'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -s i -l incremental -d 'use incremental compilation'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l include-default-paths -d 'include default paths in addition to the provided ones'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l dry-run -d 'dry run; don\'t build anything'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l dump-bootstrap-shims -d 'Indicates whether to dump the work done from bootstrap shims'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l json-output -d 'use message-format=json'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l bypass-bootstrap-lock -d 'Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l llvm-profile-generate -d 'generate PGO profile with llvm built for rustc'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l enable-bolt-settings -d 'Enable BOLT link flags'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -l skip-stage0-validation -d 'Skip stage0 compiler validation'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from cachegrind" -s h -l help -d 'Print help (see more with \'--help\')'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l include -d 'Select the benchmarks that you want to run (separated by commas). If unspecified, all benchmarks will be executed' -r
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l exclude -d 'Select the benchmarks matching a prefix in this comma-separated list that you don\'t want to run' -r
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l scenarios -d 'Select the scenarios that should be benchmarked' -r -f -a "{Full\t'',IncrFull\t'',IncrUnchanged\t'',IncrPatched\t''}"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l profiles -d 'Select the profiles that should be benchmarked' -r -f -a "{Check\t'',Debug\t'',Doc\t'',Opt\t'',Clippy\t''}"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l config -d 'TOML configuration file for build' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l build-dir -d 'Build directory, overrides `build.build-dir` in `config.toml`' -r -f -a "(__fish_complete_directories)"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l build -d 'build target of the stage0 compiler' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l host -d 'host targets to build' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l target -d 'target targets to build' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l skip -d 'build paths to skip' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l rustc-error-format -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l on-fail -d 'command to run on failure' -r -f -a "(__fish_complete_command)"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l stage -d 'stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l keep-stage -d 'stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l keep-stage-std -d 'stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l src -d 'path to the root of the rust checkout' -r -f -a "(__fish_complete_directories)"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -s j -l jobs -d 'number of jobs to run in parallel' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l error-format -d 'rustc error format' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l reproducible-artifact -d 'Additional reproducible artifacts that should be added to the reproducible artifacts archive' -r
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l set -d 'override options in config.toml' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -s v -l verbose -d 'use verbose output (-vv for very verbose)'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -s i -l incremental -d 'use incremental compilation'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l include-default-paths -d 'include default paths in addition to the provided ones'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l dry-run -d 'dry run; don\'t build anything'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l dump-bootstrap-shims -d 'Indicates whether to dump the work done from bootstrap shims'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l json-output -d 'use message-format=json'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l bypass-bootstrap-lock -d 'Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l llvm-profile-generate -d 'generate PGO profile with llvm built for rustc'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l enable-bolt-settings -d 'Enable BOLT link flags'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -l skip-stage0-validation -d 'Skip stage0 compiler validation'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from benchmark" -s h -l help -d 'Print help (see more with \'--help\')'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l config -d 'TOML configuration file for build' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l build-dir -d 'Build directory, overrides `build.build-dir` in `config.toml`' -r -f -a "(__fish_complete_directories)"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l build -d 'build target of the stage0 compiler' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l host -d 'host targets to build' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l target -d 'target targets to build' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l exclude -d 'build paths to exclude' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l skip -d 'build paths to skip' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l rustc-error-format -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l on-fail -d 'command to run on failure' -r -f -a "(__fish_complete_command)"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l stage -d 'stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l keep-stage -d 'stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l keep-stage-std -d 'stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l src -d 'path to the root of the rust checkout' -r -f -a "(__fish_complete_directories)"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -s j -l jobs -d 'number of jobs to run in parallel' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l error-format -d 'rustc error format' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l reproducible-artifact -d 'Additional reproducible artifacts that should be added to the reproducible artifacts archive' -r
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l set -d 'override options in config.toml' -r -f
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -s v -l verbose -d 'use verbose output (-vv for very verbose)'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -s i -l incremental -d 'use incremental compilation'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l include-default-paths -d 'include default paths in addition to the provided ones'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l dry-run -d 'dry run; don\'t build anything'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l dump-bootstrap-shims -d 'Indicates whether to dump the work done from bootstrap shims'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l json-output -d 'use message-format=json'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l bypass-bootstrap-lock -d 'Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l llvm-profile-generate -d 'generate PGO profile with llvm built for rustc'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l enable-bolt-settings -d 'Enable BOLT link flags'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -l skip-stage0-validation -d 'Skip stage0 compiler validation'
+complete -c x.py -n "__fish_x.py_using_subcommand perf; and __fish_seen_subcommand_from compare" -s h -l help -d 'Print help (see more with \'--help\')'
diff --git a/src/etc/completions/x.py.ps1 b/src/etc/completions/x.py.ps1
index 7d5bd3c9632..e5ee174f4ca 100644
--- a/src/etc/completions/x.py.ps1
+++ b/src/etc/completions/x.py.ps1
@@ -74,7 +74,7 @@ Register-ArgumentCompleter -Native -CommandName 'x.py' -ScriptBlock {
             [CompletionResult]::new('setup', 'setup', [CompletionResultType]::ParameterValue, 'Set up the environment for development')
             [CompletionResult]::new('suggest', 'suggest', [CompletionResultType]::ParameterValue, 'Suggest a subset of tests to run, based on modified files')
             [CompletionResult]::new('vendor', 'vendor', [CompletionResultType]::ParameterValue, 'Vendor dependencies')
-            [CompletionResult]::new('perf', 'perf', [CompletionResultType]::ParameterValue, 'Perform profiling and benchmarking of the compiler using the `rustc-perf-wrapper` tool')
+            [CompletionResult]::new('perf', 'perf', [CompletionResultType]::ParameterValue, 'Perform profiling and benchmarking of the compiler using `rustc-perf`')
             break
         }
         'x.py;build' {
@@ -754,6 +754,223 @@ Register-ArgumentCompleter -Native -CommandName 'x.py' -ScriptBlock {
             break
         }
         'x.py;perf' {
+            [CompletionResult]::new('--config', '--config', [CompletionResultType]::ParameterName, 'TOML configuration file for build')
+            [CompletionResult]::new('--build-dir', '--build-dir', [CompletionResultType]::ParameterName, 'Build directory, overrides `build.build-dir` in `config.toml`')
+            [CompletionResult]::new('--build', '--build', [CompletionResultType]::ParameterName, 'build target of the stage0 compiler')
+            [CompletionResult]::new('--host', '--host', [CompletionResultType]::ParameterName, 'host targets to build')
+            [CompletionResult]::new('--target', '--target', [CompletionResultType]::ParameterName, 'target targets to build')
+            [CompletionResult]::new('--exclude', '--exclude', [CompletionResultType]::ParameterName, 'build paths to exclude')
+            [CompletionResult]::new('--skip', '--skip', [CompletionResultType]::ParameterName, 'build paths to skip')
+            [CompletionResult]::new('--rustc-error-format', '--rustc-error-format', [CompletionResultType]::ParameterName, 'rustc-error-format')
+            [CompletionResult]::new('--on-fail', '--on-fail', [CompletionResultType]::ParameterName, 'command to run on failure')
+            [CompletionResult]::new('--stage', '--stage', [CompletionResultType]::ParameterName, 'stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)')
+            [CompletionResult]::new('--keep-stage', '--keep-stage', [CompletionResultType]::ParameterName, 'stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)')
+            [CompletionResult]::new('--keep-stage-std', '--keep-stage-std', [CompletionResultType]::ParameterName, 'stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)')
+            [CompletionResult]::new('--src', '--src', [CompletionResultType]::ParameterName, 'path to the root of the rust checkout')
+            [CompletionResult]::new('-j', '-j', [CompletionResultType]::ParameterName, 'number of jobs to run in parallel')
+            [CompletionResult]::new('--jobs', '--jobs', [CompletionResultType]::ParameterName, 'number of jobs to run in parallel')
+            [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
+            [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
+            [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
+            [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
+            [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
+            [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
+            [CompletionResult]::new('--reproducible-artifact', '--reproducible-artifact', [CompletionResultType]::ParameterName, 'Additional reproducible artifacts that should be added to the reproducible artifacts archive')
+            [CompletionResult]::new('--set', '--set', [CompletionResultType]::ParameterName, 'override options in config.toml')
+            [CompletionResult]::new('-v', '-v', [CompletionResultType]::ParameterName, 'use verbose output (-vv for very verbose)')
+            [CompletionResult]::new('--verbose', '--verbose', [CompletionResultType]::ParameterName, 'use verbose output (-vv for very verbose)')
+            [CompletionResult]::new('-i', '-i', [CompletionResultType]::ParameterName, 'use incremental compilation')
+            [CompletionResult]::new('--incremental', '--incremental', [CompletionResultType]::ParameterName, 'use incremental compilation')
+            [CompletionResult]::new('--include-default-paths', '--include-default-paths', [CompletionResultType]::ParameterName, 'include default paths in addition to the provided ones')
+            [CompletionResult]::new('--dry-run', '--dry-run', [CompletionResultType]::ParameterName, 'dry run; don''t build anything')
+            [CompletionResult]::new('--dump-bootstrap-shims', '--dump-bootstrap-shims', [CompletionResultType]::ParameterName, 'Indicates whether to dump the work done from bootstrap shims')
+            [CompletionResult]::new('--json-output', '--json-output', [CompletionResultType]::ParameterName, 'use message-format=json')
+            [CompletionResult]::new('--bypass-bootstrap-lock', '--bypass-bootstrap-lock', [CompletionResultType]::ParameterName, 'Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)')
+            [CompletionResult]::new('--llvm-profile-generate', '--llvm-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with llvm built for rustc')
+            [CompletionResult]::new('--enable-bolt-settings', '--enable-bolt-settings', [CompletionResultType]::ParameterName, 'Enable BOLT link flags')
+            [CompletionResult]::new('--skip-stage0-validation', '--skip-stage0-validation', [CompletionResultType]::ParameterName, 'Skip stage0 compiler validation')
+            [CompletionResult]::new('-h', '-h', [CompletionResultType]::ParameterName, 'Print help (see more with ''--help'')')
+            [CompletionResult]::new('--help', '--help', [CompletionResultType]::ParameterName, 'Print help (see more with ''--help'')')
+            [CompletionResult]::new('eprintln', 'eprintln', [CompletionResultType]::ParameterValue, 'Run `profile_local eprintln`. This executes the compiler on the given benchmarks and stores its stderr output')
+            [CompletionResult]::new('samply', 'samply', [CompletionResultType]::ParameterValue, 'Run `profile_local samply` This executes the compiler on the given benchmarks and profiles it with `samply`. You need to install `samply`, e.g. using `cargo install samply`')
+            [CompletionResult]::new('cachegrind', 'cachegrind', [CompletionResultType]::ParameterValue, 'Run `profile_local cachegrind`. This executes the compiler on the given benchmarks under `Cachegrind`')
+            [CompletionResult]::new('benchmark', 'benchmark', [CompletionResultType]::ParameterValue, 'Run compile benchmarks with a locally built compiler')
+            [CompletionResult]::new('compare', 'compare', [CompletionResultType]::ParameterValue, 'Compare the results of two previously executed benchmark runs')
+            break
+        }
+        'x.py;perf;eprintln' {
+            [CompletionResult]::new('--include', '--include', [CompletionResultType]::ParameterName, 'Select the benchmarks that you want to run (separated by commas). If unspecified, all benchmarks will be executed')
+            [CompletionResult]::new('--exclude', '--exclude', [CompletionResultType]::ParameterName, 'Select the benchmarks matching a prefix in this comma-separated list that you don''t want to run')
+            [CompletionResult]::new('--scenarios', '--scenarios', [CompletionResultType]::ParameterName, 'Select the scenarios that should be benchmarked')
+            [CompletionResult]::new('--profiles', '--profiles', [CompletionResultType]::ParameterName, 'Select the profiles that should be benchmarked')
+            [CompletionResult]::new('--config', '--config', [CompletionResultType]::ParameterName, 'TOML configuration file for build')
+            [CompletionResult]::new('--build-dir', '--build-dir', [CompletionResultType]::ParameterName, 'Build directory, overrides `build.build-dir` in `config.toml`')
+            [CompletionResult]::new('--build', '--build', [CompletionResultType]::ParameterName, 'build target of the stage0 compiler')
+            [CompletionResult]::new('--host', '--host', [CompletionResultType]::ParameterName, 'host targets to build')
+            [CompletionResult]::new('--target', '--target', [CompletionResultType]::ParameterName, 'target targets to build')
+            [CompletionResult]::new('--skip', '--skip', [CompletionResultType]::ParameterName, 'build paths to skip')
+            [CompletionResult]::new('--rustc-error-format', '--rustc-error-format', [CompletionResultType]::ParameterName, 'rustc-error-format')
+            [CompletionResult]::new('--on-fail', '--on-fail', [CompletionResultType]::ParameterName, 'command to run on failure')
+            [CompletionResult]::new('--stage', '--stage', [CompletionResultType]::ParameterName, 'stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)')
+            [CompletionResult]::new('--keep-stage', '--keep-stage', [CompletionResultType]::ParameterName, 'stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)')
+            [CompletionResult]::new('--keep-stage-std', '--keep-stage-std', [CompletionResultType]::ParameterName, 'stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)')
+            [CompletionResult]::new('--src', '--src', [CompletionResultType]::ParameterName, 'path to the root of the rust checkout')
+            [CompletionResult]::new('-j', '-j', [CompletionResultType]::ParameterName, 'number of jobs to run in parallel')
+            [CompletionResult]::new('--jobs', '--jobs', [CompletionResultType]::ParameterName, 'number of jobs to run in parallel')
+            [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
+            [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
+            [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
+            [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
+            [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
+            [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
+            [CompletionResult]::new('--reproducible-artifact', '--reproducible-artifact', [CompletionResultType]::ParameterName, 'Additional reproducible artifacts that should be added to the reproducible artifacts archive')
+            [CompletionResult]::new('--set', '--set', [CompletionResultType]::ParameterName, 'override options in config.toml')
+            [CompletionResult]::new('-v', '-v', [CompletionResultType]::ParameterName, 'use verbose output (-vv for very verbose)')
+            [CompletionResult]::new('--verbose', '--verbose', [CompletionResultType]::ParameterName, 'use verbose output (-vv for very verbose)')
+            [CompletionResult]::new('-i', '-i', [CompletionResultType]::ParameterName, 'use incremental compilation')
+            [CompletionResult]::new('--incremental', '--incremental', [CompletionResultType]::ParameterName, 'use incremental compilation')
+            [CompletionResult]::new('--include-default-paths', '--include-default-paths', [CompletionResultType]::ParameterName, 'include default paths in addition to the provided ones')
+            [CompletionResult]::new('--dry-run', '--dry-run', [CompletionResultType]::ParameterName, 'dry run; don''t build anything')
+            [CompletionResult]::new('--dump-bootstrap-shims', '--dump-bootstrap-shims', [CompletionResultType]::ParameterName, 'Indicates whether to dump the work done from bootstrap shims')
+            [CompletionResult]::new('--json-output', '--json-output', [CompletionResultType]::ParameterName, 'use message-format=json')
+            [CompletionResult]::new('--bypass-bootstrap-lock', '--bypass-bootstrap-lock', [CompletionResultType]::ParameterName, 'Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)')
+            [CompletionResult]::new('--llvm-profile-generate', '--llvm-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with llvm built for rustc')
+            [CompletionResult]::new('--enable-bolt-settings', '--enable-bolt-settings', [CompletionResultType]::ParameterName, 'Enable BOLT link flags')
+            [CompletionResult]::new('--skip-stage0-validation', '--skip-stage0-validation', [CompletionResultType]::ParameterName, 'Skip stage0 compiler validation')
+            [CompletionResult]::new('-h', '-h', [CompletionResultType]::ParameterName, 'Print help (see more with ''--help'')')
+            [CompletionResult]::new('--help', '--help', [CompletionResultType]::ParameterName, 'Print help (see more with ''--help'')')
+            break
+        }
+        'x.py;perf;samply' {
+            [CompletionResult]::new('--include', '--include', [CompletionResultType]::ParameterName, 'Select the benchmarks that you want to run (separated by commas). If unspecified, all benchmarks will be executed')
+            [CompletionResult]::new('--exclude', '--exclude', [CompletionResultType]::ParameterName, 'Select the benchmarks matching a prefix in this comma-separated list that you don''t want to run')
+            [CompletionResult]::new('--scenarios', '--scenarios', [CompletionResultType]::ParameterName, 'Select the scenarios that should be benchmarked')
+            [CompletionResult]::new('--profiles', '--profiles', [CompletionResultType]::ParameterName, 'Select the profiles that should be benchmarked')
+            [CompletionResult]::new('--config', '--config', [CompletionResultType]::ParameterName, 'TOML configuration file for build')
+            [CompletionResult]::new('--build-dir', '--build-dir', [CompletionResultType]::ParameterName, 'Build directory, overrides `build.build-dir` in `config.toml`')
+            [CompletionResult]::new('--build', '--build', [CompletionResultType]::ParameterName, 'build target of the stage0 compiler')
+            [CompletionResult]::new('--host', '--host', [CompletionResultType]::ParameterName, 'host targets to build')
+            [CompletionResult]::new('--target', '--target', [CompletionResultType]::ParameterName, 'target targets to build')
+            [CompletionResult]::new('--skip', '--skip', [CompletionResultType]::ParameterName, 'build paths to skip')
+            [CompletionResult]::new('--rustc-error-format', '--rustc-error-format', [CompletionResultType]::ParameterName, 'rustc-error-format')
+            [CompletionResult]::new('--on-fail', '--on-fail', [CompletionResultType]::ParameterName, 'command to run on failure')
+            [CompletionResult]::new('--stage', '--stage', [CompletionResultType]::ParameterName, 'stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)')
+            [CompletionResult]::new('--keep-stage', '--keep-stage', [CompletionResultType]::ParameterName, 'stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)')
+            [CompletionResult]::new('--keep-stage-std', '--keep-stage-std', [CompletionResultType]::ParameterName, 'stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)')
+            [CompletionResult]::new('--src', '--src', [CompletionResultType]::ParameterName, 'path to the root of the rust checkout')
+            [CompletionResult]::new('-j', '-j', [CompletionResultType]::ParameterName, 'number of jobs to run in parallel')
+            [CompletionResult]::new('--jobs', '--jobs', [CompletionResultType]::ParameterName, 'number of jobs to run in parallel')
+            [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
+            [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
+            [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
+            [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
+            [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
+            [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
+            [CompletionResult]::new('--reproducible-artifact', '--reproducible-artifact', [CompletionResultType]::ParameterName, 'Additional reproducible artifacts that should be added to the reproducible artifacts archive')
+            [CompletionResult]::new('--set', '--set', [CompletionResultType]::ParameterName, 'override options in config.toml')
+            [CompletionResult]::new('-v', '-v', [CompletionResultType]::ParameterName, 'use verbose output (-vv for very verbose)')
+            [CompletionResult]::new('--verbose', '--verbose', [CompletionResultType]::ParameterName, 'use verbose output (-vv for very verbose)')
+            [CompletionResult]::new('-i', '-i', [CompletionResultType]::ParameterName, 'use incremental compilation')
+            [CompletionResult]::new('--incremental', '--incremental', [CompletionResultType]::ParameterName, 'use incremental compilation')
+            [CompletionResult]::new('--include-default-paths', '--include-default-paths', [CompletionResultType]::ParameterName, 'include default paths in addition to the provided ones')
+            [CompletionResult]::new('--dry-run', '--dry-run', [CompletionResultType]::ParameterName, 'dry run; don''t build anything')
+            [CompletionResult]::new('--dump-bootstrap-shims', '--dump-bootstrap-shims', [CompletionResultType]::ParameterName, 'Indicates whether to dump the work done from bootstrap shims')
+            [CompletionResult]::new('--json-output', '--json-output', [CompletionResultType]::ParameterName, 'use message-format=json')
+            [CompletionResult]::new('--bypass-bootstrap-lock', '--bypass-bootstrap-lock', [CompletionResultType]::ParameterName, 'Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)')
+            [CompletionResult]::new('--llvm-profile-generate', '--llvm-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with llvm built for rustc')
+            [CompletionResult]::new('--enable-bolt-settings', '--enable-bolt-settings', [CompletionResultType]::ParameterName, 'Enable BOLT link flags')
+            [CompletionResult]::new('--skip-stage0-validation', '--skip-stage0-validation', [CompletionResultType]::ParameterName, 'Skip stage0 compiler validation')
+            [CompletionResult]::new('-h', '-h', [CompletionResultType]::ParameterName, 'Print help (see more with ''--help'')')
+            [CompletionResult]::new('--help', '--help', [CompletionResultType]::ParameterName, 'Print help (see more with ''--help'')')
+            break
+        }
+        'x.py;perf;cachegrind' {
+            [CompletionResult]::new('--include', '--include', [CompletionResultType]::ParameterName, 'Select the benchmarks that you want to run (separated by commas). If unspecified, all benchmarks will be executed')
+            [CompletionResult]::new('--exclude', '--exclude', [CompletionResultType]::ParameterName, 'Select the benchmarks matching a prefix in this comma-separated list that you don''t want to run')
+            [CompletionResult]::new('--scenarios', '--scenarios', [CompletionResultType]::ParameterName, 'Select the scenarios that should be benchmarked')
+            [CompletionResult]::new('--profiles', '--profiles', [CompletionResultType]::ParameterName, 'Select the profiles that should be benchmarked')
+            [CompletionResult]::new('--config', '--config', [CompletionResultType]::ParameterName, 'TOML configuration file for build')
+            [CompletionResult]::new('--build-dir', '--build-dir', [CompletionResultType]::ParameterName, 'Build directory, overrides `build.build-dir` in `config.toml`')
+            [CompletionResult]::new('--build', '--build', [CompletionResultType]::ParameterName, 'build target of the stage0 compiler')
+            [CompletionResult]::new('--host', '--host', [CompletionResultType]::ParameterName, 'host targets to build')
+            [CompletionResult]::new('--target', '--target', [CompletionResultType]::ParameterName, 'target targets to build')
+            [CompletionResult]::new('--skip', '--skip', [CompletionResultType]::ParameterName, 'build paths to skip')
+            [CompletionResult]::new('--rustc-error-format', '--rustc-error-format', [CompletionResultType]::ParameterName, 'rustc-error-format')
+            [CompletionResult]::new('--on-fail', '--on-fail', [CompletionResultType]::ParameterName, 'command to run on failure')
+            [CompletionResult]::new('--stage', '--stage', [CompletionResultType]::ParameterName, 'stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)')
+            [CompletionResult]::new('--keep-stage', '--keep-stage', [CompletionResultType]::ParameterName, 'stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)')
+            [CompletionResult]::new('--keep-stage-std', '--keep-stage-std', [CompletionResultType]::ParameterName, 'stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)')
+            [CompletionResult]::new('--src', '--src', [CompletionResultType]::ParameterName, 'path to the root of the rust checkout')
+            [CompletionResult]::new('-j', '-j', [CompletionResultType]::ParameterName, 'number of jobs to run in parallel')
+            [CompletionResult]::new('--jobs', '--jobs', [CompletionResultType]::ParameterName, 'number of jobs to run in parallel')
+            [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
+            [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
+            [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
+            [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
+            [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
+            [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
+            [CompletionResult]::new('--reproducible-artifact', '--reproducible-artifact', [CompletionResultType]::ParameterName, 'Additional reproducible artifacts that should be added to the reproducible artifacts archive')
+            [CompletionResult]::new('--set', '--set', [CompletionResultType]::ParameterName, 'override options in config.toml')
+            [CompletionResult]::new('-v', '-v', [CompletionResultType]::ParameterName, 'use verbose output (-vv for very verbose)')
+            [CompletionResult]::new('--verbose', '--verbose', [CompletionResultType]::ParameterName, 'use verbose output (-vv for very verbose)')
+            [CompletionResult]::new('-i', '-i', [CompletionResultType]::ParameterName, 'use incremental compilation')
+            [CompletionResult]::new('--incremental', '--incremental', [CompletionResultType]::ParameterName, 'use incremental compilation')
+            [CompletionResult]::new('--include-default-paths', '--include-default-paths', [CompletionResultType]::ParameterName, 'include default paths in addition to the provided ones')
+            [CompletionResult]::new('--dry-run', '--dry-run', [CompletionResultType]::ParameterName, 'dry run; don''t build anything')
+            [CompletionResult]::new('--dump-bootstrap-shims', '--dump-bootstrap-shims', [CompletionResultType]::ParameterName, 'Indicates whether to dump the work done from bootstrap shims')
+            [CompletionResult]::new('--json-output', '--json-output', [CompletionResultType]::ParameterName, 'use message-format=json')
+            [CompletionResult]::new('--bypass-bootstrap-lock', '--bypass-bootstrap-lock', [CompletionResultType]::ParameterName, 'Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)')
+            [CompletionResult]::new('--llvm-profile-generate', '--llvm-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with llvm built for rustc')
+            [CompletionResult]::new('--enable-bolt-settings', '--enable-bolt-settings', [CompletionResultType]::ParameterName, 'Enable BOLT link flags')
+            [CompletionResult]::new('--skip-stage0-validation', '--skip-stage0-validation', [CompletionResultType]::ParameterName, 'Skip stage0 compiler validation')
+            [CompletionResult]::new('-h', '-h', [CompletionResultType]::ParameterName, 'Print help (see more with ''--help'')')
+            [CompletionResult]::new('--help', '--help', [CompletionResultType]::ParameterName, 'Print help (see more with ''--help'')')
+            break
+        }
+        'x.py;perf;benchmark' {
+            [CompletionResult]::new('--include', '--include', [CompletionResultType]::ParameterName, 'Select the benchmarks that you want to run (separated by commas). If unspecified, all benchmarks will be executed')
+            [CompletionResult]::new('--exclude', '--exclude', [CompletionResultType]::ParameterName, 'Select the benchmarks matching a prefix in this comma-separated list that you don''t want to run')
+            [CompletionResult]::new('--scenarios', '--scenarios', [CompletionResultType]::ParameterName, 'Select the scenarios that should be benchmarked')
+            [CompletionResult]::new('--profiles', '--profiles', [CompletionResultType]::ParameterName, 'Select the profiles that should be benchmarked')
+            [CompletionResult]::new('--config', '--config', [CompletionResultType]::ParameterName, 'TOML configuration file for build')
+            [CompletionResult]::new('--build-dir', '--build-dir', [CompletionResultType]::ParameterName, 'Build directory, overrides `build.build-dir` in `config.toml`')
+            [CompletionResult]::new('--build', '--build', [CompletionResultType]::ParameterName, 'build target of the stage0 compiler')
+            [CompletionResult]::new('--host', '--host', [CompletionResultType]::ParameterName, 'host targets to build')
+            [CompletionResult]::new('--target', '--target', [CompletionResultType]::ParameterName, 'target targets to build')
+            [CompletionResult]::new('--skip', '--skip', [CompletionResultType]::ParameterName, 'build paths to skip')
+            [CompletionResult]::new('--rustc-error-format', '--rustc-error-format', [CompletionResultType]::ParameterName, 'rustc-error-format')
+            [CompletionResult]::new('--on-fail', '--on-fail', [CompletionResultType]::ParameterName, 'command to run on failure')
+            [CompletionResult]::new('--stage', '--stage', [CompletionResultType]::ParameterName, 'stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)')
+            [CompletionResult]::new('--keep-stage', '--keep-stage', [CompletionResultType]::ParameterName, 'stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)')
+            [CompletionResult]::new('--keep-stage-std', '--keep-stage-std', [CompletionResultType]::ParameterName, 'stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)')
+            [CompletionResult]::new('--src', '--src', [CompletionResultType]::ParameterName, 'path to the root of the rust checkout')
+            [CompletionResult]::new('-j', '-j', [CompletionResultType]::ParameterName, 'number of jobs to run in parallel')
+            [CompletionResult]::new('--jobs', '--jobs', [CompletionResultType]::ParameterName, 'number of jobs to run in parallel')
+            [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
+            [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
+            [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
+            [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
+            [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
+            [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
+            [CompletionResult]::new('--reproducible-artifact', '--reproducible-artifact', [CompletionResultType]::ParameterName, 'Additional reproducible artifacts that should be added to the reproducible artifacts archive')
+            [CompletionResult]::new('--set', '--set', [CompletionResultType]::ParameterName, 'override options in config.toml')
+            [CompletionResult]::new('-v', '-v', [CompletionResultType]::ParameterName, 'use verbose output (-vv for very verbose)')
+            [CompletionResult]::new('--verbose', '--verbose', [CompletionResultType]::ParameterName, 'use verbose output (-vv for very verbose)')
+            [CompletionResult]::new('-i', '-i', [CompletionResultType]::ParameterName, 'use incremental compilation')
+            [CompletionResult]::new('--incremental', '--incremental', [CompletionResultType]::ParameterName, 'use incremental compilation')
+            [CompletionResult]::new('--include-default-paths', '--include-default-paths', [CompletionResultType]::ParameterName, 'include default paths in addition to the provided ones')
+            [CompletionResult]::new('--dry-run', '--dry-run', [CompletionResultType]::ParameterName, 'dry run; don''t build anything')
+            [CompletionResult]::new('--dump-bootstrap-shims', '--dump-bootstrap-shims', [CompletionResultType]::ParameterName, 'Indicates whether to dump the work done from bootstrap shims')
+            [CompletionResult]::new('--json-output', '--json-output', [CompletionResultType]::ParameterName, 'use message-format=json')
+            [CompletionResult]::new('--bypass-bootstrap-lock', '--bypass-bootstrap-lock', [CompletionResultType]::ParameterName, 'Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)')
+            [CompletionResult]::new('--llvm-profile-generate', '--llvm-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with llvm built for rustc')
+            [CompletionResult]::new('--enable-bolt-settings', '--enable-bolt-settings', [CompletionResultType]::ParameterName, 'Enable BOLT link flags')
+            [CompletionResult]::new('--skip-stage0-validation', '--skip-stage0-validation', [CompletionResultType]::ParameterName, 'Skip stage0 compiler validation')
+            [CompletionResult]::new('-h', '-h', [CompletionResultType]::ParameterName, 'Print help (see more with ''--help'')')
+            [CompletionResult]::new('--help', '--help', [CompletionResultType]::ParameterName, 'Print help (see more with ''--help'')')
+            break
+        }
+        'x.py;perf;compare' {
             [CompletionResult]::new('--config', '--config', [CompletionResultType]::ParameterName, 'TOML configuration file for build')
             [CompletionResult]::new('--build-dir', '--build-dir', [CompletionResultType]::ParameterName, 'Build directory, overrides `build.build-dir` in `config.toml`')
             [CompletionResult]::new('--build', '--build', [CompletionResultType]::ParameterName, 'build target of the stage0 compiler')
diff --git a/src/etc/completions/x.py.sh b/src/etc/completions/x.py.sh
index 5c5e4ef0c15..4952b57b8ab 100644
--- a/src/etc/completions/x.py.sh
+++ b/src/etc/completions/x.py.sh
@@ -63,6 +63,21 @@ _x.py() {
             x.py,vendor)
                 cmd="x.py__vendor"
                 ;;
+            x.py__perf,benchmark)
+                cmd="x.py__perf__benchmark"
+                ;;
+            x.py__perf,cachegrind)
+                cmd="x.py__perf__cachegrind"
+                ;;
+            x.py__perf,compare)
+                cmd="x.py__perf__compare"
+                ;;
+            x.py__perf,eprintln)
+                cmd="x.py__perf__eprintln"
+                ;;
+            x.py__perf,samply)
+                cmd="x.py__perf__samply"
+                ;;
             *)
                 ;;
         esac
@@ -2359,7 +2374,7 @@ _x.py() {
             return 0
             ;;
         x.py__perf)
-            opts="-v -i -j -h --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
+            opts="-v -i -j -h --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]... eprintln samply cachegrind benchmark compare"
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
                 COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                 return 0
@@ -2547,6 +2562,999 @@ _x.py() {
             COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
             return 0
             ;;
+        x.py__perf__benchmark)
+            opts="-v -i -j -h --include --exclude --scenarios --profiles --verbose --incremental --config --build-dir --build --host --target --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help <benchmark-id> [PATHS]... [ARGS]..."
+            if [[ ${cur} == -* || ${COMP_CWORD} -eq 3 ]] ; then
+                COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+                return 0
+            fi
+            case "${prev}" in
+                --include)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --exclude)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --scenarios)
+                    COMPREPLY=($(compgen -W "Full IncrFull IncrUnchanged IncrPatched" -- "${cur}"))
+                    return 0
+                    ;;
+                --profiles)
+                    COMPREPLY=($(compgen -W "Check Debug Doc Opt Clippy" -- "${cur}"))
+                    return 0
+                    ;;
+                --config)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --build-dir)
+                    COMPREPLY=()
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o plusdirs
+                    fi
+                    return 0
+                    ;;
+                --build)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --host)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --target)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --skip)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --rustc-error-format)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --on-fail)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --stage)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --keep-stage)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --keep-stage-std)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --src)
+                    COMPREPLY=()
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o plusdirs
+                    fi
+                    return 0
+                    ;;
+                --jobs)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                -j)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --warnings)
+                    COMPREPLY=($(compgen -W "deny warn default" -- "${cur}"))
+                    return 0
+                    ;;
+                --error-format)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --color)
+                    COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
+                    return 0
+                    ;;
+                --rust-profile-generate)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --rust-profile-use)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --llvm-profile-use)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --reproducible-artifact)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --set)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                *)
+                    COMPREPLY=()
+                    ;;
+            esac
+            COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+            return 0
+            ;;
+        x.py__perf__cachegrind)
+            opts="-v -i -j -h --include --exclude --scenarios --profiles --verbose --incremental --config --build-dir --build --host --target --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
+            if [[ ${cur} == -* || ${COMP_CWORD} -eq 3 ]] ; then
+                COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+                return 0
+            fi
+            case "${prev}" in
+                --include)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --exclude)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --scenarios)
+                    COMPREPLY=($(compgen -W "Full IncrFull IncrUnchanged IncrPatched" -- "${cur}"))
+                    return 0
+                    ;;
+                --profiles)
+                    COMPREPLY=($(compgen -W "Check Debug Doc Opt Clippy" -- "${cur}"))
+                    return 0
+                    ;;
+                --config)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --build-dir)
+                    COMPREPLY=()
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o plusdirs
+                    fi
+                    return 0
+                    ;;
+                --build)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --host)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --target)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --skip)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --rustc-error-format)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --on-fail)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --stage)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --keep-stage)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --keep-stage-std)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --src)
+                    COMPREPLY=()
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o plusdirs
+                    fi
+                    return 0
+                    ;;
+                --jobs)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                -j)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --warnings)
+                    COMPREPLY=($(compgen -W "deny warn default" -- "${cur}"))
+                    return 0
+                    ;;
+                --error-format)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --color)
+                    COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
+                    return 0
+                    ;;
+                --rust-profile-generate)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --rust-profile-use)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --llvm-profile-use)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --reproducible-artifact)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --set)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                *)
+                    COMPREPLY=()
+                    ;;
+            esac
+            COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+            return 0
+            ;;
+        x.py__perf__compare)
+            opts="-v -i -j -h --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help <BASE> <MODIFIED> [PATHS]... [ARGS]..."
+            if [[ ${cur} == -* || ${COMP_CWORD} -eq 3 ]] ; then
+                COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+                return 0
+            fi
+            case "${prev}" in
+                --config)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --build-dir)
+                    COMPREPLY=()
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o plusdirs
+                    fi
+                    return 0
+                    ;;
+                --build)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --host)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --target)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --exclude)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --skip)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --rustc-error-format)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --on-fail)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --stage)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --keep-stage)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --keep-stage-std)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --src)
+                    COMPREPLY=()
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o plusdirs
+                    fi
+                    return 0
+                    ;;
+                --jobs)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                -j)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --warnings)
+                    COMPREPLY=($(compgen -W "deny warn default" -- "${cur}"))
+                    return 0
+                    ;;
+                --error-format)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --color)
+                    COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
+                    return 0
+                    ;;
+                --rust-profile-generate)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --rust-profile-use)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --llvm-profile-use)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --reproducible-artifact)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --set)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                *)
+                    COMPREPLY=()
+                    ;;
+            esac
+            COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+            return 0
+            ;;
+        x.py__perf__eprintln)
+            opts="-v -i -j -h --include --exclude --scenarios --profiles --verbose --incremental --config --build-dir --build --host --target --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
+            if [[ ${cur} == -* || ${COMP_CWORD} -eq 3 ]] ; then
+                COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+                return 0
+            fi
+            case "${prev}" in
+                --include)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --exclude)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --scenarios)
+                    COMPREPLY=($(compgen -W "Full IncrFull IncrUnchanged IncrPatched" -- "${cur}"))
+                    return 0
+                    ;;
+                --profiles)
+                    COMPREPLY=($(compgen -W "Check Debug Doc Opt Clippy" -- "${cur}"))
+                    return 0
+                    ;;
+                --config)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --build-dir)
+                    COMPREPLY=()
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o plusdirs
+                    fi
+                    return 0
+                    ;;
+                --build)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --host)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --target)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --skip)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --rustc-error-format)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --on-fail)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --stage)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --keep-stage)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --keep-stage-std)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --src)
+                    COMPREPLY=()
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o plusdirs
+                    fi
+                    return 0
+                    ;;
+                --jobs)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                -j)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --warnings)
+                    COMPREPLY=($(compgen -W "deny warn default" -- "${cur}"))
+                    return 0
+                    ;;
+                --error-format)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --color)
+                    COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
+                    return 0
+                    ;;
+                --rust-profile-generate)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --rust-profile-use)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --llvm-profile-use)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --reproducible-artifact)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --set)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                *)
+                    COMPREPLY=()
+                    ;;
+            esac
+            COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+            return 0
+            ;;
+        x.py__perf__samply)
+            opts="-v -i -j -h --include --exclude --scenarios --profiles --verbose --incremental --config --build-dir --build --host --target --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
+            if [[ ${cur} == -* || ${COMP_CWORD} -eq 3 ]] ; then
+                COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+                return 0
+            fi
+            case "${prev}" in
+                --include)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --exclude)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --scenarios)
+                    COMPREPLY=($(compgen -W "Full IncrFull IncrUnchanged IncrPatched" -- "${cur}"))
+                    return 0
+                    ;;
+                --profiles)
+                    COMPREPLY=($(compgen -W "Check Debug Doc Opt Clippy" -- "${cur}"))
+                    return 0
+                    ;;
+                --config)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --build-dir)
+                    COMPREPLY=()
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o plusdirs
+                    fi
+                    return 0
+                    ;;
+                --build)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --host)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --target)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --skip)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --rustc-error-format)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --on-fail)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --stage)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --keep-stage)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --keep-stage-std)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --src)
+                    COMPREPLY=()
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o plusdirs
+                    fi
+                    return 0
+                    ;;
+                --jobs)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                -j)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --warnings)
+                    COMPREPLY=($(compgen -W "deny warn default" -- "${cur}"))
+                    return 0
+                    ;;
+                --error-format)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --color)
+                    COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
+                    return 0
+                    ;;
+                --rust-profile-generate)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --rust-profile-use)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --llvm-profile-use)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --reproducible-artifact)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --set)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                *)
+                    COMPREPLY=()
+                    ;;
+            esac
+            COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+            return 0
+            ;;
         x.py__run)
             opts="-v -i -j -h --args --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
diff --git a/src/etc/completions/x.py.zsh b/src/etc/completions/x.py.zsh
index dd71ec00edf..71afd5e73ca 100644
--- a/src/etc/completions/x.py.zsh
+++ b/src/etc/completions/x.py.zsh
@@ -811,8 +811,246 @@ _arguments "${_arguments_options[@]}" : \
 '--skip-stage0-validation[Skip stage0 compiler validation]' \
 '-h[Print help (see more with '\''--help'\'')]' \
 '--help[Print help (see more with '\''--help'\'')]' \
+'::paths -- paths for the subcommand:_files' \
+'::free_args -- arguments passed to subcommands:_default' \
+":: :_x.py__perf_commands" \
+"*::: :->perf" \
+&& ret=0
+
+    case $state in
+    (perf)
+        words=($line[3] "${words[@]}")
+        (( CURRENT += 1 ))
+        curcontext="${curcontext%:*:*}:x.py-perf-command-$line[3]:"
+        case $line[3] in
+            (eprintln)
+_arguments "${_arguments_options[@]}" : \
+'*--include=[Select the benchmarks that you want to run (separated by commas). If unspecified, all benchmarks will be executed]:INCLUDE:_default' \
+'*--exclude=[Select the benchmarks matching a prefix in this comma-separated list that you don'\''t want to run]:EXCLUDE:_default' \
+'*--scenarios=[Select the scenarios that should be benchmarked]:SCENARIOS:(Full IncrFull IncrUnchanged IncrPatched)' \
+'*--profiles=[Select the profiles that should be benchmarked]:PROFILES:(Check Debug Doc Opt Clippy)' \
+'--config=[TOML configuration file for build]:FILE:_files' \
+'--build-dir=[Build directory, overrides \`build.build-dir\` in \`config.toml\`]:DIR:_files -/' \
+'--build=[build target of the stage0 compiler]:BUILD:' \
+'--host=[host targets to build]:HOST:' \
+'--target=[target targets to build]:TARGET:' \
+'*--skip=[build paths to skip]:PATH:_files' \
+'--rustc-error-format=[]:RUSTC_ERROR_FORMAT:' \
+'--on-fail=[command to run on failure]:CMD:_cmdstring' \
+'--stage=[stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)]:N:' \
+'*--keep-stage=[stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)]:N:' \
+'*--keep-stage-std=[stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)]:N:' \
+'--src=[path to the root of the rust checkout]:DIR:_files -/' \
+'-j+[number of jobs to run in parallel]:JOBS:' \
+'--jobs=[number of jobs to run in parallel]:JOBS:' \
+'--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
+'--error-format=[rustc error format]:FORMAT:' \
+'--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
+'--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
+'--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
+'--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
+'*--reproducible-artifact=[Additional reproducible artifacts that should be added to the reproducible artifacts archive]:REPRODUCIBLE_ARTIFACT:_default' \
+'*--set=[override options in config.toml]:section.option=value:' \
+'*-v[use verbose output (-vv for very verbose)]' \
+'*--verbose[use verbose output (-vv for very verbose)]' \
+'-i[use incremental compilation]' \
+'--incremental[use incremental compilation]' \
+'--include-default-paths[include default paths in addition to the provided ones]' \
+'--dry-run[dry run; don'\''t build anything]' \
+'--dump-bootstrap-shims[Indicates whether to dump the work done from bootstrap shims]' \
+'--json-output[use message-format=json]' \
+'--bypass-bootstrap-lock[Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)]' \
+'--llvm-profile-generate[generate PGO profile with llvm built for rustc]' \
+'--enable-bolt-settings[Enable BOLT link flags]' \
+'--skip-stage0-validation[Skip stage0 compiler validation]' \
+'-h[Print help (see more with '\''--help'\'')]' \
+'--help[Print help (see more with '\''--help'\'')]' \
 '*::paths -- paths for the subcommand:_files' \
 && ret=0
+;;
+(samply)
+_arguments "${_arguments_options[@]}" : \
+'*--include=[Select the benchmarks that you want to run (separated by commas). If unspecified, all benchmarks will be executed]:INCLUDE:_default' \
+'*--exclude=[Select the benchmarks matching a prefix in this comma-separated list that you don'\''t want to run]:EXCLUDE:_default' \
+'*--scenarios=[Select the scenarios that should be benchmarked]:SCENARIOS:(Full IncrFull IncrUnchanged IncrPatched)' \
+'*--profiles=[Select the profiles that should be benchmarked]:PROFILES:(Check Debug Doc Opt Clippy)' \
+'--config=[TOML configuration file for build]:FILE:_files' \
+'--build-dir=[Build directory, overrides \`build.build-dir\` in \`config.toml\`]:DIR:_files -/' \
+'--build=[build target of the stage0 compiler]:BUILD:' \
+'--host=[host targets to build]:HOST:' \
+'--target=[target targets to build]:TARGET:' \
+'*--skip=[build paths to skip]:PATH:_files' \
+'--rustc-error-format=[]:RUSTC_ERROR_FORMAT:' \
+'--on-fail=[command to run on failure]:CMD:_cmdstring' \
+'--stage=[stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)]:N:' \
+'*--keep-stage=[stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)]:N:' \
+'*--keep-stage-std=[stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)]:N:' \
+'--src=[path to the root of the rust checkout]:DIR:_files -/' \
+'-j+[number of jobs to run in parallel]:JOBS:' \
+'--jobs=[number of jobs to run in parallel]:JOBS:' \
+'--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
+'--error-format=[rustc error format]:FORMAT:' \
+'--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
+'--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
+'--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
+'--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
+'*--reproducible-artifact=[Additional reproducible artifacts that should be added to the reproducible artifacts archive]:REPRODUCIBLE_ARTIFACT:_default' \
+'*--set=[override options in config.toml]:section.option=value:' \
+'*-v[use verbose output (-vv for very verbose)]' \
+'*--verbose[use verbose output (-vv for very verbose)]' \
+'-i[use incremental compilation]' \
+'--incremental[use incremental compilation]' \
+'--include-default-paths[include default paths in addition to the provided ones]' \
+'--dry-run[dry run; don'\''t build anything]' \
+'--dump-bootstrap-shims[Indicates whether to dump the work done from bootstrap shims]' \
+'--json-output[use message-format=json]' \
+'--bypass-bootstrap-lock[Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)]' \
+'--llvm-profile-generate[generate PGO profile with llvm built for rustc]' \
+'--enable-bolt-settings[Enable BOLT link flags]' \
+'--skip-stage0-validation[Skip stage0 compiler validation]' \
+'-h[Print help (see more with '\''--help'\'')]' \
+'--help[Print help (see more with '\''--help'\'')]' \
+'*::paths -- paths for the subcommand:_files' \
+&& ret=0
+;;
+(cachegrind)
+_arguments "${_arguments_options[@]}" : \
+'*--include=[Select the benchmarks that you want to run (separated by commas). If unspecified, all benchmarks will be executed]:INCLUDE:_default' \
+'*--exclude=[Select the benchmarks matching a prefix in this comma-separated list that you don'\''t want to run]:EXCLUDE:_default' \
+'*--scenarios=[Select the scenarios that should be benchmarked]:SCENARIOS:(Full IncrFull IncrUnchanged IncrPatched)' \
+'*--profiles=[Select the profiles that should be benchmarked]:PROFILES:(Check Debug Doc Opt Clippy)' \
+'--config=[TOML configuration file for build]:FILE:_files' \
+'--build-dir=[Build directory, overrides \`build.build-dir\` in \`config.toml\`]:DIR:_files -/' \
+'--build=[build target of the stage0 compiler]:BUILD:' \
+'--host=[host targets to build]:HOST:' \
+'--target=[target targets to build]:TARGET:' \
+'*--skip=[build paths to skip]:PATH:_files' \
+'--rustc-error-format=[]:RUSTC_ERROR_FORMAT:' \
+'--on-fail=[command to run on failure]:CMD:_cmdstring' \
+'--stage=[stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)]:N:' \
+'*--keep-stage=[stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)]:N:' \
+'*--keep-stage-std=[stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)]:N:' \
+'--src=[path to the root of the rust checkout]:DIR:_files -/' \
+'-j+[number of jobs to run in parallel]:JOBS:' \
+'--jobs=[number of jobs to run in parallel]:JOBS:' \
+'--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
+'--error-format=[rustc error format]:FORMAT:' \
+'--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
+'--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
+'--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
+'--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
+'*--reproducible-artifact=[Additional reproducible artifacts that should be added to the reproducible artifacts archive]:REPRODUCIBLE_ARTIFACT:_default' \
+'*--set=[override options in config.toml]:section.option=value:' \
+'*-v[use verbose output (-vv for very verbose)]' \
+'*--verbose[use verbose output (-vv for very verbose)]' \
+'-i[use incremental compilation]' \
+'--incremental[use incremental compilation]' \
+'--include-default-paths[include default paths in addition to the provided ones]' \
+'--dry-run[dry run; don'\''t build anything]' \
+'--dump-bootstrap-shims[Indicates whether to dump the work done from bootstrap shims]' \
+'--json-output[use message-format=json]' \
+'--bypass-bootstrap-lock[Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)]' \
+'--llvm-profile-generate[generate PGO profile with llvm built for rustc]' \
+'--enable-bolt-settings[Enable BOLT link flags]' \
+'--skip-stage0-validation[Skip stage0 compiler validation]' \
+'-h[Print help (see more with '\''--help'\'')]' \
+'--help[Print help (see more with '\''--help'\'')]' \
+'*::paths -- paths for the subcommand:_files' \
+&& ret=0
+;;
+(benchmark)
+_arguments "${_arguments_options[@]}" : \
+'*--include=[Select the benchmarks that you want to run (separated by commas). If unspecified, all benchmarks will be executed]:INCLUDE:_default' \
+'*--exclude=[Select the benchmarks matching a prefix in this comma-separated list that you don'\''t want to run]:EXCLUDE:_default' \
+'*--scenarios=[Select the scenarios that should be benchmarked]:SCENARIOS:(Full IncrFull IncrUnchanged IncrPatched)' \
+'*--profiles=[Select the profiles that should be benchmarked]:PROFILES:(Check Debug Doc Opt Clippy)' \
+'--config=[TOML configuration file for build]:FILE:_files' \
+'--build-dir=[Build directory, overrides \`build.build-dir\` in \`config.toml\`]:DIR:_files -/' \
+'--build=[build target of the stage0 compiler]:BUILD:' \
+'--host=[host targets to build]:HOST:' \
+'--target=[target targets to build]:TARGET:' \
+'*--skip=[build paths to skip]:PATH:_files' \
+'--rustc-error-format=[]:RUSTC_ERROR_FORMAT:' \
+'--on-fail=[command to run on failure]:CMD:_cmdstring' \
+'--stage=[stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)]:N:' \
+'*--keep-stage=[stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)]:N:' \
+'*--keep-stage-std=[stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)]:N:' \
+'--src=[path to the root of the rust checkout]:DIR:_files -/' \
+'-j+[number of jobs to run in parallel]:JOBS:' \
+'--jobs=[number of jobs to run in parallel]:JOBS:' \
+'--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
+'--error-format=[rustc error format]:FORMAT:' \
+'--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
+'--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
+'--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
+'--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
+'*--reproducible-artifact=[Additional reproducible artifacts that should be added to the reproducible artifacts archive]:REPRODUCIBLE_ARTIFACT:_default' \
+'*--set=[override options in config.toml]:section.option=value:' \
+'*-v[use verbose output (-vv for very verbose)]' \
+'*--verbose[use verbose output (-vv for very verbose)]' \
+'-i[use incremental compilation]' \
+'--incremental[use incremental compilation]' \
+'--include-default-paths[include default paths in addition to the provided ones]' \
+'--dry-run[dry run; don'\''t build anything]' \
+'--dump-bootstrap-shims[Indicates whether to dump the work done from bootstrap shims]' \
+'--json-output[use message-format=json]' \
+'--bypass-bootstrap-lock[Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)]' \
+'--llvm-profile-generate[generate PGO profile with llvm built for rustc]' \
+'--enable-bolt-settings[Enable BOLT link flags]' \
+'--skip-stage0-validation[Skip stage0 compiler validation]' \
+'-h[Print help (see more with '\''--help'\'')]' \
+'--help[Print help (see more with '\''--help'\'')]' \
+':benchmark-id -- Identifier to associate benchmark results with:_default' \
+'*::paths -- paths for the subcommand:_files' \
+&& ret=0
+;;
+(compare)
+_arguments "${_arguments_options[@]}" : \
+'--config=[TOML configuration file for build]:FILE:_files' \
+'--build-dir=[Build directory, overrides \`build.build-dir\` in \`config.toml\`]:DIR:_files -/' \
+'--build=[build target of the stage0 compiler]:BUILD:' \
+'--host=[host targets to build]:HOST:' \
+'--target=[target targets to build]:TARGET:' \
+'*--exclude=[build paths to exclude]:PATH:_files' \
+'*--skip=[build paths to skip]:PATH:_files' \
+'--rustc-error-format=[]:RUSTC_ERROR_FORMAT:' \
+'--on-fail=[command to run on failure]:CMD:_cmdstring' \
+'--stage=[stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)]:N:' \
+'*--keep-stage=[stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)]:N:' \
+'*--keep-stage-std=[stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)]:N:' \
+'--src=[path to the root of the rust checkout]:DIR:_files -/' \
+'-j+[number of jobs to run in parallel]:JOBS:' \
+'--jobs=[number of jobs to run in parallel]:JOBS:' \
+'--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
+'--error-format=[rustc error format]:FORMAT:' \
+'--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
+'--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
+'--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
+'--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
+'*--reproducible-artifact=[Additional reproducible artifacts that should be added to the reproducible artifacts archive]:REPRODUCIBLE_ARTIFACT:_default' \
+'*--set=[override options in config.toml]:section.option=value:' \
+'*-v[use verbose output (-vv for very verbose)]' \
+'*--verbose[use verbose output (-vv for very verbose)]' \
+'-i[use incremental compilation]' \
+'--incremental[use incremental compilation]' \
+'--include-default-paths[include default paths in addition to the provided ones]' \
+'--dry-run[dry run; don'\''t build anything]' \
+'--dump-bootstrap-shims[Indicates whether to dump the work done from bootstrap shims]' \
+'--json-output[use message-format=json]' \
+'--bypass-bootstrap-lock[Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)]' \
+'--llvm-profile-generate[generate PGO profile with llvm built for rustc]' \
+'--enable-bolt-settings[Enable BOLT link flags]' \
+'--skip-stage0-validation[Skip stage0 compiler validation]' \
+'-h[Print help (see more with '\''--help'\'')]' \
+'--help[Print help (see more with '\''--help'\'')]' \
+':base -- The name of the base artifact to be compared:_default' \
+':modified -- The name of the modified artifact to be compared:_default' \
+'*::paths -- paths for the subcommand:_files' \
+&& ret=0
+;;
+        esac
+    ;;
+esac
 ;;
         esac
     ;;
@@ -838,7 +1076,7 @@ _x.py_commands() {
 'setup:Set up the environment for development' \
 'suggest:Suggest a subset of tests to run, based on modified files' \
 'vendor:Vendor dependencies' \
-'perf:Perform profiling and benchmarking of the compiler using the \`rustc-perf-wrapper\` tool' \
+'perf:Perform profiling and benchmarking of the compiler using \`rustc-perf\`' \
     )
     _describe -t commands 'x.py commands' commands "$@"
 }
@@ -899,9 +1137,40 @@ _x.py__miri_commands() {
 }
 (( $+functions[_x.py__perf_commands] )) ||
 _x.py__perf_commands() {
-    local commands; commands=()
+    local commands; commands=(
+'eprintln:Run \`profile_local eprintln\`. This executes the compiler on the given benchmarks and stores its stderr output' \
+'samply:Run \`profile_local samply\` This executes the compiler on the given benchmarks and profiles it with \`samply\`. You need to install \`samply\`, e.g. using \`cargo install samply\`' \
+'cachegrind:Run \`profile_local cachegrind\`. This executes the compiler on the given benchmarks under \`Cachegrind\`' \
+'benchmark:Run compile benchmarks with a locally built compiler' \
+'compare:Compare the results of two previously executed benchmark runs' \
+    )
     _describe -t commands 'x.py perf commands' commands "$@"
 }
+(( $+functions[_x.py__perf__benchmark_commands] )) ||
+_x.py__perf__benchmark_commands() {
+    local commands; commands=()
+    _describe -t commands 'x.py perf benchmark commands' commands "$@"
+}
+(( $+functions[_x.py__perf__cachegrind_commands] )) ||
+_x.py__perf__cachegrind_commands() {
+    local commands; commands=()
+    _describe -t commands 'x.py perf cachegrind commands' commands "$@"
+}
+(( $+functions[_x.py__perf__compare_commands] )) ||
+_x.py__perf__compare_commands() {
+    local commands; commands=()
+    _describe -t commands 'x.py perf compare commands' commands "$@"
+}
+(( $+functions[_x.py__perf__eprintln_commands] )) ||
+_x.py__perf__eprintln_commands() {
+    local commands; commands=()
+    _describe -t commands 'x.py perf eprintln commands' commands "$@"
+}
+(( $+functions[_x.py__perf__samply_commands] )) ||
+_x.py__perf__samply_commands() {
+    local commands; commands=()
+    _describe -t commands 'x.py perf samply commands' commands "$@"
+}
 (( $+functions[_x.py__run_commands] )) ||
 _x.py__run_commands() {
     local commands; commands=()
diff --git a/src/etc/completions/x.sh b/src/etc/completions/x.sh
index 057af1ffc6d..26a44b3ff2f 100644
--- a/src/etc/completions/x.sh
+++ b/src/etc/completions/x.sh
@@ -63,6 +63,21 @@ _x() {
             x,vendor)
                 cmd="x__vendor"
                 ;;
+            x__perf,benchmark)
+                cmd="x__perf__benchmark"
+                ;;
+            x__perf,cachegrind)
+                cmd="x__perf__cachegrind"
+                ;;
+            x__perf,compare)
+                cmd="x__perf__compare"
+                ;;
+            x__perf,eprintln)
+                cmd="x__perf__eprintln"
+                ;;
+            x__perf,samply)
+                cmd="x__perf__samply"
+                ;;
             *)
                 ;;
         esac
@@ -2359,7 +2374,7 @@ _x() {
             return 0
             ;;
         x__perf)
-            opts="-v -i -j -h --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
+            opts="-v -i -j -h --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]... eprintln samply cachegrind benchmark compare"
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
                 COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                 return 0
@@ -2547,6 +2562,999 @@ _x() {
             COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
             return 0
             ;;
+        x__perf__benchmark)
+            opts="-v -i -j -h --include --exclude --scenarios --profiles --verbose --incremental --config --build-dir --build --host --target --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help <benchmark-id> [PATHS]... [ARGS]..."
+            if [[ ${cur} == -* || ${COMP_CWORD} -eq 3 ]] ; then
+                COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+                return 0
+            fi
+            case "${prev}" in
+                --include)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --exclude)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --scenarios)
+                    COMPREPLY=($(compgen -W "Full IncrFull IncrUnchanged IncrPatched" -- "${cur}"))
+                    return 0
+                    ;;
+                --profiles)
+                    COMPREPLY=($(compgen -W "Check Debug Doc Opt Clippy" -- "${cur}"))
+                    return 0
+                    ;;
+                --config)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --build-dir)
+                    COMPREPLY=()
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o plusdirs
+                    fi
+                    return 0
+                    ;;
+                --build)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --host)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --target)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --skip)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --rustc-error-format)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --on-fail)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --stage)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --keep-stage)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --keep-stage-std)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --src)
+                    COMPREPLY=()
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o plusdirs
+                    fi
+                    return 0
+                    ;;
+                --jobs)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                -j)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --warnings)
+                    COMPREPLY=($(compgen -W "deny warn default" -- "${cur}"))
+                    return 0
+                    ;;
+                --error-format)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --color)
+                    COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
+                    return 0
+                    ;;
+                --rust-profile-generate)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --rust-profile-use)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --llvm-profile-use)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --reproducible-artifact)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --set)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                *)
+                    COMPREPLY=()
+                    ;;
+            esac
+            COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+            return 0
+            ;;
+        x__perf__cachegrind)
+            opts="-v -i -j -h --include --exclude --scenarios --profiles --verbose --incremental --config --build-dir --build --host --target --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
+            if [[ ${cur} == -* || ${COMP_CWORD} -eq 3 ]] ; then
+                COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+                return 0
+            fi
+            case "${prev}" in
+                --include)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --exclude)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --scenarios)
+                    COMPREPLY=($(compgen -W "Full IncrFull IncrUnchanged IncrPatched" -- "${cur}"))
+                    return 0
+                    ;;
+                --profiles)
+                    COMPREPLY=($(compgen -W "Check Debug Doc Opt Clippy" -- "${cur}"))
+                    return 0
+                    ;;
+                --config)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --build-dir)
+                    COMPREPLY=()
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o plusdirs
+                    fi
+                    return 0
+                    ;;
+                --build)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --host)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --target)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --skip)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --rustc-error-format)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --on-fail)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --stage)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --keep-stage)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --keep-stage-std)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --src)
+                    COMPREPLY=()
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o plusdirs
+                    fi
+                    return 0
+                    ;;
+                --jobs)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                -j)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --warnings)
+                    COMPREPLY=($(compgen -W "deny warn default" -- "${cur}"))
+                    return 0
+                    ;;
+                --error-format)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --color)
+                    COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
+                    return 0
+                    ;;
+                --rust-profile-generate)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --rust-profile-use)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --llvm-profile-use)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --reproducible-artifact)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --set)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                *)
+                    COMPREPLY=()
+                    ;;
+            esac
+            COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+            return 0
+            ;;
+        x__perf__compare)
+            opts="-v -i -j -h --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help <BASE> <MODIFIED> [PATHS]... [ARGS]..."
+            if [[ ${cur} == -* || ${COMP_CWORD} -eq 3 ]] ; then
+                COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+                return 0
+            fi
+            case "${prev}" in
+                --config)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --build-dir)
+                    COMPREPLY=()
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o plusdirs
+                    fi
+                    return 0
+                    ;;
+                --build)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --host)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --target)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --exclude)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --skip)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --rustc-error-format)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --on-fail)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --stage)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --keep-stage)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --keep-stage-std)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --src)
+                    COMPREPLY=()
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o plusdirs
+                    fi
+                    return 0
+                    ;;
+                --jobs)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                -j)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --warnings)
+                    COMPREPLY=($(compgen -W "deny warn default" -- "${cur}"))
+                    return 0
+                    ;;
+                --error-format)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --color)
+                    COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
+                    return 0
+                    ;;
+                --rust-profile-generate)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --rust-profile-use)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --llvm-profile-use)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --reproducible-artifact)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --set)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                *)
+                    COMPREPLY=()
+                    ;;
+            esac
+            COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+            return 0
+            ;;
+        x__perf__eprintln)
+            opts="-v -i -j -h --include --exclude --scenarios --profiles --verbose --incremental --config --build-dir --build --host --target --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
+            if [[ ${cur} == -* || ${COMP_CWORD} -eq 3 ]] ; then
+                COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+                return 0
+            fi
+            case "${prev}" in
+                --include)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --exclude)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --scenarios)
+                    COMPREPLY=($(compgen -W "Full IncrFull IncrUnchanged IncrPatched" -- "${cur}"))
+                    return 0
+                    ;;
+                --profiles)
+                    COMPREPLY=($(compgen -W "Check Debug Doc Opt Clippy" -- "${cur}"))
+                    return 0
+                    ;;
+                --config)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --build-dir)
+                    COMPREPLY=()
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o plusdirs
+                    fi
+                    return 0
+                    ;;
+                --build)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --host)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --target)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --skip)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --rustc-error-format)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --on-fail)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --stage)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --keep-stage)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --keep-stage-std)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --src)
+                    COMPREPLY=()
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o plusdirs
+                    fi
+                    return 0
+                    ;;
+                --jobs)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                -j)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --warnings)
+                    COMPREPLY=($(compgen -W "deny warn default" -- "${cur}"))
+                    return 0
+                    ;;
+                --error-format)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --color)
+                    COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
+                    return 0
+                    ;;
+                --rust-profile-generate)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --rust-profile-use)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --llvm-profile-use)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --reproducible-artifact)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --set)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                *)
+                    COMPREPLY=()
+                    ;;
+            esac
+            COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+            return 0
+            ;;
+        x__perf__samply)
+            opts="-v -i -j -h --include --exclude --scenarios --profiles --verbose --incremental --config --build-dir --build --host --target --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
+            if [[ ${cur} == -* || ${COMP_CWORD} -eq 3 ]] ; then
+                COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+                return 0
+            fi
+            case "${prev}" in
+                --include)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --exclude)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --scenarios)
+                    COMPREPLY=($(compgen -W "Full IncrFull IncrUnchanged IncrPatched" -- "${cur}"))
+                    return 0
+                    ;;
+                --profiles)
+                    COMPREPLY=($(compgen -W "Check Debug Doc Opt Clippy" -- "${cur}"))
+                    return 0
+                    ;;
+                --config)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --build-dir)
+                    COMPREPLY=()
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o plusdirs
+                    fi
+                    return 0
+                    ;;
+                --build)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --host)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --target)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --skip)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --rustc-error-format)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --on-fail)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --stage)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --keep-stage)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --keep-stage-std)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --src)
+                    COMPREPLY=()
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o plusdirs
+                    fi
+                    return 0
+                    ;;
+                --jobs)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                -j)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --warnings)
+                    COMPREPLY=($(compgen -W "deny warn default" -- "${cur}"))
+                    return 0
+                    ;;
+                --error-format)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                --color)
+                    COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
+                    return 0
+                    ;;
+                --rust-profile-generate)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --rust-profile-use)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --llvm-profile-use)
+                    local oldifs
+                    if [ -n "${IFS+x}" ]; then
+                        oldifs="$IFS"
+                    fi
+                    IFS=$'\n'
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    if [ -n "${oldifs+x}" ]; then
+                        IFS="$oldifs"
+                    fi
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o filenames
+                    fi
+                    return 0
+                    ;;
+                --reproducible-artifact)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --set)
+                    COMPREPLY=("${cur}")
+                    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+                        compopt -o nospace
+                    fi
+                    return 0
+                    ;;
+                *)
+                    COMPREPLY=()
+                    ;;
+            esac
+            COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+            return 0
+            ;;
         x__run)
             opts="-v -i -j -h --args --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
diff --git a/src/etc/completions/x.zsh b/src/etc/completions/x.zsh
index 6215f9af833..b08eb06f8e6 100644
--- a/src/etc/completions/x.zsh
+++ b/src/etc/completions/x.zsh
@@ -811,8 +811,246 @@ _arguments "${_arguments_options[@]}" : \
 '--skip-stage0-validation[Skip stage0 compiler validation]' \
 '-h[Print help (see more with '\''--help'\'')]' \
 '--help[Print help (see more with '\''--help'\'')]' \
+'::paths -- paths for the subcommand:_files' \
+'::free_args -- arguments passed to subcommands:_default' \
+":: :_x__perf_commands" \
+"*::: :->perf" \
+&& ret=0
+
+    case $state in
+    (perf)
+        words=($line[3] "${words[@]}")
+        (( CURRENT += 1 ))
+        curcontext="${curcontext%:*:*}:x-perf-command-$line[3]:"
+        case $line[3] in
+            (eprintln)
+_arguments "${_arguments_options[@]}" : \
+'*--include=[Select the benchmarks that you want to run (separated by commas). If unspecified, all benchmarks will be executed]:INCLUDE:_default' \
+'*--exclude=[Select the benchmarks matching a prefix in this comma-separated list that you don'\''t want to run]:EXCLUDE:_default' \
+'*--scenarios=[Select the scenarios that should be benchmarked]:SCENARIOS:(Full IncrFull IncrUnchanged IncrPatched)' \
+'*--profiles=[Select the profiles that should be benchmarked]:PROFILES:(Check Debug Doc Opt Clippy)' \
+'--config=[TOML configuration file for build]:FILE:_files' \
+'--build-dir=[Build directory, overrides \`build.build-dir\` in \`config.toml\`]:DIR:_files -/' \
+'--build=[build target of the stage0 compiler]:BUILD:' \
+'--host=[host targets to build]:HOST:' \
+'--target=[target targets to build]:TARGET:' \
+'*--skip=[build paths to skip]:PATH:_files' \
+'--rustc-error-format=[]:RUSTC_ERROR_FORMAT:' \
+'--on-fail=[command to run on failure]:CMD:_cmdstring' \
+'--stage=[stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)]:N:' \
+'*--keep-stage=[stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)]:N:' \
+'*--keep-stage-std=[stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)]:N:' \
+'--src=[path to the root of the rust checkout]:DIR:_files -/' \
+'-j+[number of jobs to run in parallel]:JOBS:' \
+'--jobs=[number of jobs to run in parallel]:JOBS:' \
+'--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
+'--error-format=[rustc error format]:FORMAT:' \
+'--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
+'--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
+'--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
+'--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
+'*--reproducible-artifact=[Additional reproducible artifacts that should be added to the reproducible artifacts archive]:REPRODUCIBLE_ARTIFACT:_default' \
+'*--set=[override options in config.toml]:section.option=value:' \
+'*-v[use verbose output (-vv for very verbose)]' \
+'*--verbose[use verbose output (-vv for very verbose)]' \
+'-i[use incremental compilation]' \
+'--incremental[use incremental compilation]' \
+'--include-default-paths[include default paths in addition to the provided ones]' \
+'--dry-run[dry run; don'\''t build anything]' \
+'--dump-bootstrap-shims[Indicates whether to dump the work done from bootstrap shims]' \
+'--json-output[use message-format=json]' \
+'--bypass-bootstrap-lock[Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)]' \
+'--llvm-profile-generate[generate PGO profile with llvm built for rustc]' \
+'--enable-bolt-settings[Enable BOLT link flags]' \
+'--skip-stage0-validation[Skip stage0 compiler validation]' \
+'-h[Print help (see more with '\''--help'\'')]' \
+'--help[Print help (see more with '\''--help'\'')]' \
 '*::paths -- paths for the subcommand:_files' \
 && ret=0
+;;
+(samply)
+_arguments "${_arguments_options[@]}" : \
+'*--include=[Select the benchmarks that you want to run (separated by commas). If unspecified, all benchmarks will be executed]:INCLUDE:_default' \
+'*--exclude=[Select the benchmarks matching a prefix in this comma-separated list that you don'\''t want to run]:EXCLUDE:_default' \
+'*--scenarios=[Select the scenarios that should be benchmarked]:SCENARIOS:(Full IncrFull IncrUnchanged IncrPatched)' \
+'*--profiles=[Select the profiles that should be benchmarked]:PROFILES:(Check Debug Doc Opt Clippy)' \
+'--config=[TOML configuration file for build]:FILE:_files' \
+'--build-dir=[Build directory, overrides \`build.build-dir\` in \`config.toml\`]:DIR:_files -/' \
+'--build=[build target of the stage0 compiler]:BUILD:' \
+'--host=[host targets to build]:HOST:' \
+'--target=[target targets to build]:TARGET:' \
+'*--skip=[build paths to skip]:PATH:_files' \
+'--rustc-error-format=[]:RUSTC_ERROR_FORMAT:' \
+'--on-fail=[command to run on failure]:CMD:_cmdstring' \
+'--stage=[stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)]:N:' \
+'*--keep-stage=[stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)]:N:' \
+'*--keep-stage-std=[stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)]:N:' \
+'--src=[path to the root of the rust checkout]:DIR:_files -/' \
+'-j+[number of jobs to run in parallel]:JOBS:' \
+'--jobs=[number of jobs to run in parallel]:JOBS:' \
+'--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
+'--error-format=[rustc error format]:FORMAT:' \
+'--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
+'--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
+'--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
+'--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
+'*--reproducible-artifact=[Additional reproducible artifacts that should be added to the reproducible artifacts archive]:REPRODUCIBLE_ARTIFACT:_default' \
+'*--set=[override options in config.toml]:section.option=value:' \
+'*-v[use verbose output (-vv for very verbose)]' \
+'*--verbose[use verbose output (-vv for very verbose)]' \
+'-i[use incremental compilation]' \
+'--incremental[use incremental compilation]' \
+'--include-default-paths[include default paths in addition to the provided ones]' \
+'--dry-run[dry run; don'\''t build anything]' \
+'--dump-bootstrap-shims[Indicates whether to dump the work done from bootstrap shims]' \
+'--json-output[use message-format=json]' \
+'--bypass-bootstrap-lock[Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)]' \
+'--llvm-profile-generate[generate PGO profile with llvm built for rustc]' \
+'--enable-bolt-settings[Enable BOLT link flags]' \
+'--skip-stage0-validation[Skip stage0 compiler validation]' \
+'-h[Print help (see more with '\''--help'\'')]' \
+'--help[Print help (see more with '\''--help'\'')]' \
+'*::paths -- paths for the subcommand:_files' \
+&& ret=0
+;;
+(cachegrind)
+_arguments "${_arguments_options[@]}" : \
+'*--include=[Select the benchmarks that you want to run (separated by commas). If unspecified, all benchmarks will be executed]:INCLUDE:_default' \
+'*--exclude=[Select the benchmarks matching a prefix in this comma-separated list that you don'\''t want to run]:EXCLUDE:_default' \
+'*--scenarios=[Select the scenarios that should be benchmarked]:SCENARIOS:(Full IncrFull IncrUnchanged IncrPatched)' \
+'*--profiles=[Select the profiles that should be benchmarked]:PROFILES:(Check Debug Doc Opt Clippy)' \
+'--config=[TOML configuration file for build]:FILE:_files' \
+'--build-dir=[Build directory, overrides \`build.build-dir\` in \`config.toml\`]:DIR:_files -/' \
+'--build=[build target of the stage0 compiler]:BUILD:' \
+'--host=[host targets to build]:HOST:' \
+'--target=[target targets to build]:TARGET:' \
+'*--skip=[build paths to skip]:PATH:_files' \
+'--rustc-error-format=[]:RUSTC_ERROR_FORMAT:' \
+'--on-fail=[command to run on failure]:CMD:_cmdstring' \
+'--stage=[stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)]:N:' \
+'*--keep-stage=[stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)]:N:' \
+'*--keep-stage-std=[stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)]:N:' \
+'--src=[path to the root of the rust checkout]:DIR:_files -/' \
+'-j+[number of jobs to run in parallel]:JOBS:' \
+'--jobs=[number of jobs to run in parallel]:JOBS:' \
+'--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
+'--error-format=[rustc error format]:FORMAT:' \
+'--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
+'--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
+'--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
+'--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
+'*--reproducible-artifact=[Additional reproducible artifacts that should be added to the reproducible artifacts archive]:REPRODUCIBLE_ARTIFACT:_default' \
+'*--set=[override options in config.toml]:section.option=value:' \
+'*-v[use verbose output (-vv for very verbose)]' \
+'*--verbose[use verbose output (-vv for very verbose)]' \
+'-i[use incremental compilation]' \
+'--incremental[use incremental compilation]' \
+'--include-default-paths[include default paths in addition to the provided ones]' \
+'--dry-run[dry run; don'\''t build anything]' \
+'--dump-bootstrap-shims[Indicates whether to dump the work done from bootstrap shims]' \
+'--json-output[use message-format=json]' \
+'--bypass-bootstrap-lock[Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)]' \
+'--llvm-profile-generate[generate PGO profile with llvm built for rustc]' \
+'--enable-bolt-settings[Enable BOLT link flags]' \
+'--skip-stage0-validation[Skip stage0 compiler validation]' \
+'-h[Print help (see more with '\''--help'\'')]' \
+'--help[Print help (see more with '\''--help'\'')]' \
+'*::paths -- paths for the subcommand:_files' \
+&& ret=0
+;;
+(benchmark)
+_arguments "${_arguments_options[@]}" : \
+'*--include=[Select the benchmarks that you want to run (separated by commas). If unspecified, all benchmarks will be executed]:INCLUDE:_default' \
+'*--exclude=[Select the benchmarks matching a prefix in this comma-separated list that you don'\''t want to run]:EXCLUDE:_default' \
+'*--scenarios=[Select the scenarios that should be benchmarked]:SCENARIOS:(Full IncrFull IncrUnchanged IncrPatched)' \
+'*--profiles=[Select the profiles that should be benchmarked]:PROFILES:(Check Debug Doc Opt Clippy)' \
+'--config=[TOML configuration file for build]:FILE:_files' \
+'--build-dir=[Build directory, overrides \`build.build-dir\` in \`config.toml\`]:DIR:_files -/' \
+'--build=[build target of the stage0 compiler]:BUILD:' \
+'--host=[host targets to build]:HOST:' \
+'--target=[target targets to build]:TARGET:' \
+'*--skip=[build paths to skip]:PATH:_files' \
+'--rustc-error-format=[]:RUSTC_ERROR_FORMAT:' \
+'--on-fail=[command to run on failure]:CMD:_cmdstring' \
+'--stage=[stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)]:N:' \
+'*--keep-stage=[stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)]:N:' \
+'*--keep-stage-std=[stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)]:N:' \
+'--src=[path to the root of the rust checkout]:DIR:_files -/' \
+'-j+[number of jobs to run in parallel]:JOBS:' \
+'--jobs=[number of jobs to run in parallel]:JOBS:' \
+'--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
+'--error-format=[rustc error format]:FORMAT:' \
+'--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
+'--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
+'--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
+'--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
+'*--reproducible-artifact=[Additional reproducible artifacts that should be added to the reproducible artifacts archive]:REPRODUCIBLE_ARTIFACT:_default' \
+'*--set=[override options in config.toml]:section.option=value:' \
+'*-v[use verbose output (-vv for very verbose)]' \
+'*--verbose[use verbose output (-vv for very verbose)]' \
+'-i[use incremental compilation]' \
+'--incremental[use incremental compilation]' \
+'--include-default-paths[include default paths in addition to the provided ones]' \
+'--dry-run[dry run; don'\''t build anything]' \
+'--dump-bootstrap-shims[Indicates whether to dump the work done from bootstrap shims]' \
+'--json-output[use message-format=json]' \
+'--bypass-bootstrap-lock[Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)]' \
+'--llvm-profile-generate[generate PGO profile with llvm built for rustc]' \
+'--enable-bolt-settings[Enable BOLT link flags]' \
+'--skip-stage0-validation[Skip stage0 compiler validation]' \
+'-h[Print help (see more with '\''--help'\'')]' \
+'--help[Print help (see more with '\''--help'\'')]' \
+':benchmark-id -- Identifier to associate benchmark results with:_default' \
+'*::paths -- paths for the subcommand:_files' \
+&& ret=0
+;;
+(compare)
+_arguments "${_arguments_options[@]}" : \
+'--config=[TOML configuration file for build]:FILE:_files' \
+'--build-dir=[Build directory, overrides \`build.build-dir\` in \`config.toml\`]:DIR:_files -/' \
+'--build=[build target of the stage0 compiler]:BUILD:' \
+'--host=[host targets to build]:HOST:' \
+'--target=[target targets to build]:TARGET:' \
+'*--exclude=[build paths to exclude]:PATH:_files' \
+'*--skip=[build paths to skip]:PATH:_files' \
+'--rustc-error-format=[]:RUSTC_ERROR_FORMAT:' \
+'--on-fail=[command to run on failure]:CMD:_cmdstring' \
+'--stage=[stage to build (indicates compiler to use/test, e.g., stage 0 uses the bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)]:N:' \
+'*--keep-stage=[stage(s) to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)]:N:' \
+'*--keep-stage-std=[stage(s) of the standard library to keep without recompiling (pass multiple times to keep e.g., both stages 0 and 1)]:N:' \
+'--src=[path to the root of the rust checkout]:DIR:_files -/' \
+'-j+[number of jobs to run in parallel]:JOBS:' \
+'--jobs=[number of jobs to run in parallel]:JOBS:' \
+'--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
+'--error-format=[rustc error format]:FORMAT:' \
+'--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
+'--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
+'--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
+'--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
+'*--reproducible-artifact=[Additional reproducible artifacts that should be added to the reproducible artifacts archive]:REPRODUCIBLE_ARTIFACT:_default' \
+'*--set=[override options in config.toml]:section.option=value:' \
+'*-v[use verbose output (-vv for very verbose)]' \
+'*--verbose[use verbose output (-vv for very verbose)]' \
+'-i[use incremental compilation]' \
+'--incremental[use incremental compilation]' \
+'--include-default-paths[include default paths in addition to the provided ones]' \
+'--dry-run[dry run; don'\''t build anything]' \
+'--dump-bootstrap-shims[Indicates whether to dump the work done from bootstrap shims]' \
+'--json-output[use message-format=json]' \
+'--bypass-bootstrap-lock[Bootstrap uses this value to decide whether it should bypass locking the build process. This is rarely needed (e.g., compiling the std library for different targets in parallel)]' \
+'--llvm-profile-generate[generate PGO profile with llvm built for rustc]' \
+'--enable-bolt-settings[Enable BOLT link flags]' \
+'--skip-stage0-validation[Skip stage0 compiler validation]' \
+'-h[Print help (see more with '\''--help'\'')]' \
+'--help[Print help (see more with '\''--help'\'')]' \
+':base -- The name of the base artifact to be compared:_default' \
+':modified -- The name of the modified artifact to be compared:_default' \
+'*::paths -- paths for the subcommand:_files' \
+&& ret=0
+;;
+        esac
+    ;;
+esac
 ;;
         esac
     ;;
@@ -838,7 +1076,7 @@ _x_commands() {
 'setup:Set up the environment for development' \
 'suggest:Suggest a subset of tests to run, based on modified files' \
 'vendor:Vendor dependencies' \
-'perf:Perform profiling and benchmarking of the compiler using the \`rustc-perf-wrapper\` tool' \
+'perf:Perform profiling and benchmarking of the compiler using \`rustc-perf\`' \
     )
     _describe -t commands 'x commands' commands "$@"
 }
@@ -899,9 +1137,40 @@ _x__miri_commands() {
 }
 (( $+functions[_x__perf_commands] )) ||
 _x__perf_commands() {
-    local commands; commands=()
+    local commands; commands=(
+'eprintln:Run \`profile_local eprintln\`. This executes the compiler on the given benchmarks and stores its stderr output' \
+'samply:Run \`profile_local samply\` This executes the compiler on the given benchmarks and profiles it with \`samply\`. You need to install \`samply\`, e.g. using \`cargo install samply\`' \
+'cachegrind:Run \`profile_local cachegrind\`. This executes the compiler on the given benchmarks under \`Cachegrind\`' \
+'benchmark:Run compile benchmarks with a locally built compiler' \
+'compare:Compare the results of two previously executed benchmark runs' \
+    )
     _describe -t commands 'x perf commands' commands "$@"
 }
+(( $+functions[_x__perf__benchmark_commands] )) ||
+_x__perf__benchmark_commands() {
+    local commands; commands=()
+    _describe -t commands 'x perf benchmark commands' commands "$@"
+}
+(( $+functions[_x__perf__cachegrind_commands] )) ||
+_x__perf__cachegrind_commands() {
+    local commands; commands=()
+    _describe -t commands 'x perf cachegrind commands' commands "$@"
+}
+(( $+functions[_x__perf__compare_commands] )) ||
+_x__perf__compare_commands() {
+    local commands; commands=()
+    _describe -t commands 'x perf compare commands' commands "$@"
+}
+(( $+functions[_x__perf__eprintln_commands] )) ||
+_x__perf__eprintln_commands() {
+    local commands; commands=()
+    _describe -t commands 'x perf eprintln commands' commands "$@"
+}
+(( $+functions[_x__perf__samply_commands] )) ||
+_x__perf__samply_commands() {
+    local commands; commands=()
+    _describe -t commands 'x perf samply commands' commands "$@"
+}
 (( $+functions[_x__run_commands] )) ||
 _x__run_commands() {
     local commands; commands=()