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target_features: control separately whether enabling and disabling a target feature is allowed

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This commit is contained in:
Ralf Jung 2024-11-24 12:22:01 +01:00
parent a1740a9c35
commit eb2e928250
5 changed files with 64 additions and 31 deletions
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4
compiler/rustc_codegen_ssa/src/target_features.rs
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@ -65,7 +65,7 @@ pub(crate) fn from_target_feature_attr(
// Only allow target features whose feature gates have been enabled
// and which are permitted to be toggled.
if let Err(reason) = stability.allow_toggle() {
if let Err(reason) = stability.toggle_allowed(/*enable*/ true) {
tcx.dcx().emit_err(errors::ForbiddenTargetFeatureAttr {
span: item.span(),
feature,
@ -160,7 +160,7 @@ pub(crate) fn provide(providers: &mut Providers) {
.target
.rust_target_features()
.iter()
.map(|&(a, b, _)| (a.to_string(), b.compute_toggleability(target)))
.map(|(a, b, _)| (a.to_string(), b.compute_toggleability(target)))
.collect()
}
},