bjoernager/rust
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Don't use LLVM's target features

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This commit is contained in:
Caleb Zulawski 2024-08-03 04:45:48 -04:00
parent fbd618d4aa
commit 484aca8857
6 changed files with 84 additions and 39 deletions
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23
compiler/rustc_codegen_ssa/src/target_features.rs
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@ -1,6 +1,6 @@
use rustc_ast::ast;
use rustc_attr::InstructionSetAttr;
use rustc_data_structures::fx::{FxHashMap, FxIndexSet};
use rustc_data_structures::fx::FxIndexSet;
use rustc_data_structures::unord::{ExtendUnord, UnordMap, UnordSet};
use rustc_errors::Applicability;
use rustc_hir::def::DefKind;
@ -165,26 +165,7 @@ pub(crate) fn provide(providers: &mut Providers) {
}
},
implied_target_features: |tcx, feature| {
let implied_features = tcx
.sess
.target
.supported_target_features()
.iter()
.map(|(f, _, i)| (Symbol::intern(f), i))
.collect::<FxHashMap<_, _>>();
// implied target features have their own implied target features, so we traverse the
// map until there are no more features to add
let mut features = UnordSet::new();
let mut new_features = vec![feature];
while let Some(new_feature) = new_features.pop() {
if features.insert(new_feature) {
if let Some(implied_features) = implied_features.get(&new_feature) {
new_features.extend(implied_features.iter().copied().map(Symbol::intern))
}
}
}
features
tcx.sess.target.implied_target_features(std::iter::once(feature)).into()
},
asm_target_features,
..*providers