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Make s390x non-clobber-only vector register support unstable

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Taiki Endo
2024-11-24 21:42:22 +09:00
parent 2c8f6de1ba
commit c024d8ccdf
21 changed files with 822 additions and 145 deletions
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13
compiler/rustc_target/src/asm/mod.rs
View File

@@ -604,9 +604,13 @@ impl InlineAsmRegClass {
/// Returns a list of supported types for this register class, each with an
/// options target feature required to use this type.
///
/// At the codegen stage, it is fine to always pass true for `allow_experimental_reg`,
/// since all the stability checking will have been done in prior stages.
pub fn supported_types(
self,
arch: InlineAsmArch,
allow_experimental_reg: bool,
) -> &'static [(InlineAsmType, Option<Symbol>)] {
match self {
Self::X86(r) => r.supported_types(arch),
@@ -618,7 +622,7 @@ impl InlineAsmRegClass {
Self::Hexagon(r) => r.supported_types(arch),
Self::LoongArch(r) => r.supported_types(arch),
Self::Mips(r) => r.supported_types(arch),
Self::S390x(r) => r.supported_types(arch),
Self::S390x(r) => r.supported_types(arch, allow_experimental_reg),
Self::Sparc(r) => r.supported_types(arch),
Self::SpirV(r) => r.supported_types(arch),
Self::Wasm(r) => r.supported_types(arch),
@@ -696,8 +700,11 @@ impl InlineAsmRegClass {
/// Returns whether registers in this class can only be used as clobbers
/// and not as inputs/outputs.
pub fn is_clobber_only(self, arch: InlineAsmArch) -> bool {
self.supported_types(arch).is_empty()
///
/// At the codegen stage, it is fine to always pass true for `allow_experimental_reg`,
/// since all the stability checking will have been done in prior stages.
pub fn is_clobber_only(self, arch: InlineAsmArch, allow_experimental_reg: bool) -> bool {
self.supported_types(arch, allow_experimental_reg).is_empty()
}
}

16
compiler/rustc_target/src/asm/s390x.rs
View File

@@ -38,14 +38,22 @@ impl S390xInlineAsmRegClass {
pub fn supported_types(
self,
_arch: InlineAsmArch,
allow_experimental_reg: bool,
) -> &'static [(InlineAsmType, Option<Symbol>)] {
match self {
Self::reg | Self::reg_addr => types! { _: I8, I16, I32, I64; },
Self::freg => types! { _: F32, F64; },
Self::vreg => types! {
vector: I32, F32, I64, F64, I128, F128,
VecI8(16), VecI16(8), VecI32(4), VecI64(2), VecF32(4), VecF64(2);
},
Self::vreg => {
if allow_experimental_reg {
// non-clobber-only vector register support is unstable.
types! {
vector: I32, F32, I64, F64, I128, F128,
VecI8(16), VecI16(8), VecI32(4), VecI64(2), VecF32(4), VecF64(2);
}
} else {
&[]
}
}
Self::areg => &[],
}
}