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target_feature: make it more clear what that 'Option' means

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This commit is contained in:
Ralf Jung 2023-11-12 12:41:22 +01:00
parent a04d56b36d
commit 5b5006916b
3 changed files with 274 additions and 245 deletions
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5
compiler/rustc_codegen_llvm/src/llvm_util.rs
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@ -293,7 +293,7 @@ pub fn target_features(sess: &Session, allow_unstable: bool) -> Vec<Symbol> {
supported_target_features(sess)
.iter()
.filter_map(|&(feature, gate)| {
if sess.is_nightly_build() || allow_unstable || gate.is_none() {
if sess.is_nightly_build() || allow_unstable || gate.is_stable() {
Some(feature)
} else {
None
@ -554,7 +554,8 @@ pub(crate) fn global_llvm_features(sess: &Session, diagnostics: bool) -> Vec<Str
UnknownCTargetFeature { feature, rust_feature: PossibleFeature::None }
};
sess.emit_warning(unknown_feature);
} else if feature_state.is_some_and(|(_name, feature_gate)| feature_gate.is_some())
} else if feature_state
.is_some_and(|(_name, feature_gate)| !feature_gate.is_stable())
{
// An unstable feature. Warn about using it.
sess.emit_warning(UnstableCTargetFeature { feature });