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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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4
compiler/rustc_hir_analysis/src/check/intrinsic.rs
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@ -641,7 +641,9 @@ pub fn check_intrinsic_type(
| sym::simd_round
| sym::simd_trunc => (1, 0, vec![param(0)], param(0)),
sym::simd_fpowi => (1, 0, vec![param(0), tcx.types.i32], param(0)),
sym::simd_fma => (1, 0, vec![param(0), param(0), param(0)], param(0)),
sym::simd_fma | sym::simd_relaxed_fma => {
(1, 0, vec![param(0), param(0), param(0)], param(0))
}
sym::simd_gather => (3, 0, vec![param(0), param(1), param(2)], param(0)),
sym::simd_masked_load => (3, 0, vec![param(0), param(1), param(2)], param(2)),
sym::simd_masked_store => (3, 0, vec![param(0), param(1), param(2)], tcx.types.unit),