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Move target feature whitelist from cg_llvm to cg_ssa

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These target features have to be supported or at least emulated by
alternative codegen backends anyway as they are used by common crates.
By moving this list to cg_ssa, other codegen backends don't have to copy
this code.
This commit is contained in:
bjorn3 2020-10-04 11:12:56 +02:00
parent 32cbc65e6b
commit 17d1cbbbe0
4 changed files with 155 additions and 154 deletions
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8
compiler/rustc_codegen_llvm/src/attributes.rs
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@ -349,17 +349,15 @@ pub fn from_fn_attrs(cx: &CodegenCx<'ll, 'tcx>, llfn: &'ll Value, instance: ty::
}
pub fn provide(providers: &mut Providers) {
use rustc_codegen_ssa::target_features::{all_known_features, supported_target_features};
providers.supported_target_features = |tcx, cnum| {
assert_eq!(cnum, LOCAL_CRATE);
if tcx.sess.opts.actually_rustdoc {
// rustdoc needs to be able to document functions that use all the features, so
// provide them all.
llvm_util::all_known_features().map(|(a, b)| (a.to_string(), b)).collect()
all_known_features().map(|(a, b)| (a.to_string(), b)).collect()
} else {
llvm_util::supported_target_features(tcx.sess)
.iter()
.map(|&(a, b)| (a.to_string(), b))
.collect()
supported_target_features(tcx.sess).iter().map(|&(a, b)| (a.to_string(), b)).collect()
}
};