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| author | clubby789 <jamie@hill-daniel.co.uk> | 2025-07-17 21:47:00 +0100 |
|---|---|---|
| committer | clubby789 <jamie@hill-daniel.co.uk> | 2025-08-20 17:08:46 +0100 |
| commit | 8ea3b093819aabd92a605b42989341da0c97c0d6 (patch) | |
| tree | 3316419d585c84e5ee1fd20df3fb904f9e69d4bd /compiler | |
| parent | 1c9952f4dd6e0947ee91f07130c03813a088a894 (diff) | |
| download | rust-8ea3b093819aabd92a605b42989341da0c97c0d6.tar.gz rust-8ea3b093819aabd92a605b42989341da0c97c0d6.zip | |
Pass `alloc-variant-zeroed` to LLVM
Diffstat (limited to 'compiler')
| -rw-r--r-- | compiler/rustc_codegen_llvm/src/attributes.rs | 10 | ||||
| -rw-r--r-- | compiler/rustc_feature/src/builtin_attrs.rs | 4 | ||||
| -rw-r--r-- | compiler/rustc_span/src/symbol.rs | 1 |
3 files changed, 15 insertions, 0 deletions
diff --git a/compiler/rustc_codegen_llvm/src/attributes.rs b/compiler/rustc_codegen_llvm/src/attributes.rs index c548f467583..984db43c67f 100644 --- a/compiler/rustc_codegen_llvm/src/attributes.rs +++ b/compiler/rustc_codegen_llvm/src/attributes.rs @@ -436,6 +436,16 @@ pub(crate) fn llfn_attrs_from_instance<'ll, 'tcx>( || codegen_fn_attrs.flags.contains(CodegenFnAttrFlags::ALLOCATOR_ZEROED) { to_add.push(create_alloc_family_attr(cx.llcx)); + if let Some(zv) = + cx.tcx.get_attr(instance.def_id(), rustc_span::sym::rustc_allocator_zeroed_variant) + && let Some(name) = zv.value_str() + { + to_add.push(llvm::CreateAttrStringValue( + cx.llcx, + "alloc-variant-zeroed", + &mangle_internal_symbol(cx.tcx, name.as_str()), + )); + } // apply to argument place instead of function let alloc_align = AttributeKind::AllocAlign.create_attr(cx.llcx); attributes::apply_to_llfn(llfn, AttributePlace::Argument(1), &[alloc_align]); diff --git a/compiler/rustc_feature/src/builtin_attrs.rs b/compiler/rustc_feature/src/builtin_attrs.rs index ab6b8f92802..6cd0c43a3e0 100644 --- a/compiler/rustc_feature/src/builtin_attrs.rs +++ b/compiler/rustc_feature/src/builtin_attrs.rs @@ -993,6 +993,10 @@ pub static BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[ rustc_allocator_zeroed, Normal, template!(Word), WarnFollowing, EncodeCrossCrate::No, ), + rustc_attr!( + rustc_allocator_zeroed_variant, Normal, template!(NameValueStr: "function"), ErrorPreceding, + EncodeCrossCrate::Yes, + ), gated!( default_lib_allocator, Normal, template!(Word), WarnFollowing, EncodeCrossCrate::No, allocator_internals, experimental!(default_lib_allocator), diff --git a/compiler/rustc_span/src/symbol.rs b/compiler/rustc_span/src/symbol.rs index acbed7a9eed..21ba6c2779d 100644 --- a/compiler/rustc_span/src/symbol.rs +++ b/compiler/rustc_span/src/symbol.rs @@ -1816,6 +1816,7 @@ symbols! { rustc_align, rustc_allocator, rustc_allocator_zeroed, + rustc_allocator_zeroed_variant, rustc_allow_const_fn_unstable, rustc_allow_incoherent_impl, rustc_allowed_through_unstable_modules, |