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Provide option for specifying the profiler runtime

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Currently, if `-Zinstrument-coverage` is enabled, the target is linked
against the `library/profiler_builtins` crate (which pulls in LLVM's
compiler-rt runtime).

This option enables backends to specify an alternative runtime crate for
handling injected instrumentation calls.
This commit is contained in:
Alan Egerton 2021-05-14 11:07:06 +01:00
parent 69b352ef77
commit 93c636211c
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GPG key ID: 68A65BCD9D289FFE
4 changed files with 26 additions and 20 deletions
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4
compiler/rustc_session/src/options.rs
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@ -1148,8 +1148,6 @@ options! {
"compile without linking"),
no_parallel_llvm: bool = (false, parse_no_flag, [UNTRACKED],
"run LLVM in non-parallel mode (while keeping codegen-units and ThinLTO)"),
no_profiler_runtime: bool = (false, parse_no_flag, [TRACKED],
"prevent automatic injection of the profiler_builtins crate"),
normalize_docs: bool = (false, parse_bool, [TRACKED],
"normalize associated items in rustdoc when generating documentation"),
osx_rpath_install_name: bool = (false, parse_bool, [TRACKED],
@ -1193,6 +1191,8 @@ options! {
profile_emit: Option<PathBuf> = (None, parse_opt_pathbuf, [TRACKED],
"file path to emit profiling data at runtime when using 'profile' \
(default based on relative source path)"),
profiler_runtime: Option<String> = (Some(String::from("profiler_builtins")), parse_opt_string, [TRACKED],
"name of the profiler runtime crate to automatically inject, or None to disable"),
query_dep_graph: bool = (false, parse_bool, [UNTRACKED],
"enable queries of the dependency graph for regression testing (default: no)"),
query_stats: bool = (false, parse_bool, [UNTRACKED],