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Rollup merge of #133395 - calebzulawski:simd_relaxed_fma, r=workingjubilee

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Add simd_relaxed_fma intrinsic

Adds compiler support for https://github.com/rust-lang/portable-simd/issues/387#issuecomment-2337169786

r? `@workingjubilee`

cc `@RalfJung` is this kind of nondeterminism a problem for miri/opsem?
This commit is contained in:
Matthias Krüger 2024-12-03 07:48:33 +01:00 • committed by GitHub
commit 9709334061
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7 changed files with 27 additions and 2 deletions
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compiler/rustc_codegen_llvm/src/intrinsic.rs
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@ -1534,6 +1534,7 @@ fn generic_simd_intrinsic<'ll, 'tcx>(
sym::simd_flog => ("log", bx.type_func(&[vec_ty], vec_ty)),
sym::simd_floor => ("floor", bx.type_func(&[vec_ty], vec_ty)),
sym::simd_fma => ("fma", bx.type_func(&[vec_ty, vec_ty, vec_ty], vec_ty)),
sym::simd_relaxed_fma => ("fmuladd", bx.type_func(&[vec_ty, vec_ty, vec_ty], vec_ty)),
sym::simd_fpowi => ("powi", bx.type_func(&[vec_ty, bx.type_i32()], vec_ty)),
sym::simd_fpow => ("pow", bx.type_func(&[vec_ty, vec_ty], vec_ty)),
sym::simd_fsin => ("sin", bx.type_func(&[vec_ty], vec_ty)),
@ -1572,6 +1573,7 @@ fn generic_simd_intrinsic<'ll, 'tcx>(
| sym::simd_fpowi
| sym::simd_fsin
| sym::simd_fsqrt
| sym::simd_relaxed_fma
| sym::simd_round
| sym::simd_trunc
) {