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| author | Amanieu d'Antras <amanieu@gmail.com> | 2022-04-06 20:41:12 +0100 |
|---|---|---|
| committer | Amanieu d'Antras <amanieu@gmail.com> | 2022-04-19 17:14:23 +0200 |
| commit | b2bc46938c123214d36c1463e23810c13e0293b4 (patch) | |
| tree | 592d423b4690cc466fd9d60dd1b52216635574fb /compiler/rustc_codegen_llvm/src | |
| parent | 634770c0a7f8598164ab825cfe419cc8b03c36e5 (diff) | |
| download | rust-b2bc46938c123214d36c1463e23810c13e0293b4.tar.gz rust-b2bc46938c123214d36c1463e23810c13e0293b4.zip | |
asm: Add a kreg0 register class on x86 which includes k0
Previously we only exposed a kreg register class which excludes the k0 register since it can't be used in many instructions. However k0 is a valid register and we need to have a way of marking it as clobbered for clobber_abi. Fixes #94977
Diffstat (limited to 'compiler/rustc_codegen_llvm/src')
| -rw-r--r-- | compiler/rustc_codegen_llvm/src/asm.rs | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/compiler/rustc_codegen_llvm/src/asm.rs b/compiler/rustc_codegen_llvm/src/asm.rs index 96c7d884b7b..205b77e9862 100644 --- a/compiler/rustc_codegen_llvm/src/asm.rs +++ b/compiler/rustc_codegen_llvm/src/asm.rs @@ -574,7 +574,9 @@ fn reg_to_llvm(reg: InlineAsmRegOrRegClass, layout: Option<&TyAndLayout<'_>>) -> InlineAsmRegClass::X86(X86InlineAsmRegClass::zmm_reg) => "v", InlineAsmRegClass::X86(X86InlineAsmRegClass::kreg) => "^Yk", InlineAsmRegClass::X86( - X86InlineAsmRegClass::x87_reg | X86InlineAsmRegClass::mmx_reg, + X86InlineAsmRegClass::x87_reg + | X86InlineAsmRegClass::mmx_reg + | X86InlineAsmRegClass::kreg0, ) => unreachable!("clobber-only"), InlineAsmRegClass::Wasm(WasmInlineAsmRegClass::local) => "r", InlineAsmRegClass::Bpf(BpfInlineAsmRegClass::reg) => "r", @@ -659,7 +661,11 @@ fn modifier_to_llvm( _ => unreachable!(), }, InlineAsmRegClass::X86(X86InlineAsmRegClass::kreg) => None, - InlineAsmRegClass::X86(X86InlineAsmRegClass::x87_reg | X86InlineAsmRegClass::mmx_reg) => { + InlineAsmRegClass::X86( + X86InlineAsmRegClass::x87_reg + | X86InlineAsmRegClass::mmx_reg + | X86InlineAsmRegClass::kreg0, + ) => { unreachable!("clobber-only") } InlineAsmRegClass::Wasm(WasmInlineAsmRegClass::local) => None, @@ -729,7 +735,11 @@ fn dummy_output_type<'ll>(cx: &CodegenCx<'ll, '_>, reg: InlineAsmRegClass) -> &' | InlineAsmRegClass::X86(X86InlineAsmRegClass::ymm_reg) | InlineAsmRegClass::X86(X86InlineAsmRegClass::zmm_reg) => cx.type_f32(), InlineAsmRegClass::X86(X86InlineAsmRegClass::kreg) => cx.type_i16(), - InlineAsmRegClass::X86(X86InlineAsmRegClass::x87_reg | X86InlineAsmRegClass::mmx_reg) => { + InlineAsmRegClass::X86( + X86InlineAsmRegClass::x87_reg + | X86InlineAsmRegClass::mmx_reg + | X86InlineAsmRegClass::kreg0, + ) => { unreachable!("clobber-only") } InlineAsmRegClass::Wasm(WasmInlineAsmRegClass::local) => cx.type_i32(), |