bjoernager/rust
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Allow targets to override default codegen backend

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This commit is contained in:
Maybe Waffle 2024-02-14 23:43:00 +00:00
parent ee9c7c940c
commit a03d19ef63
7 changed files with 130 additions and 46 deletions
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19
compiler/rustc_driver_impl/src/lib.rs
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@ -35,7 +35,7 @@ use rustc_session::config::{nightly_options, CG_OPTIONS, Z_OPTIONS};
use rustc_session::config::{ErrorOutputType, Input, OutFileName, OutputType};
use rustc_session::getopts::{self, Matches};
use rustc_session::lint::{Lint, LintId};
use rustc_session::{config, EarlyDiagCtxt, Session};
use rustc_session::{config, filesearch, EarlyDiagCtxt, Session};
use rustc_span::def_id::LOCAL_CRATE;
use rustc_span::source_map::FileLoader;
use rustc_span::symbol::sym;
@ -887,7 +887,13 @@ pub fn version_at_macro_invocation(
let debug_flags = matches.opt_strs("Z");
let backend_name = debug_flags.iter().find_map(|x| x.strip_prefix("codegen-backend="));
get_codegen_backend(early_dcx, &None, backend_name).print_version();
let opts = config::Options::default();
let sysroot = opts.maybe_sysroot.clone().unwrap_or_else(|| {
filesearch::get_or_default_sysroot().expect("Failed finding sysroot")
});
let target = config::build_target_config(early_dcx, &opts, None, &sysroot);
get_codegen_backend(early_dcx, &sysroot, backend_name, &target).print_version();
}
}
@ -1092,7 +1098,14 @@ pub fn describe_flag_categories(early_dcx: &EarlyDiagCtxt, matches: &Matches) ->
if cg_flags.iter().any(|x| *x == "passes=list") {
let backend_name = debug_flags.iter().find_map(|x| x.strip_prefix("codegen-backend="));
get_codegen_backend(early_dcx, &None, backend_name).print_passes();
let opts = config::Options::default();
let sysroot = opts.maybe_sysroot.clone().unwrap_or_else(|| {
filesearch::get_or_default_sysroot().expect("Failed finding sysroot")
});
let target = config::build_target_config(early_dcx, &opts, None, &sysroot);
get_codegen_backend(early_dcx, &sysroot, backend_name, &target).print_passes();
return true;
}