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Rollup merge of #137595 - folkertdev:remove-simd-pow-powi, r=RalfJung

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remove `simd_fpow` and `simd_fpowi`

Discussed in https://github.com/rust-lang/rust/issues/137555

These functions are not exposed from `std::intrinsics::simd`, and not used anywhere outside of the compiler. They also don't lower to particularly good code at least on the major ISAs (I checked x86_64, aarch64, s390x, powerpc), where the vector is just spilled to the stack and scalar functions are used for the actual logic.

r? `@RalfJung`
This commit is contained in:
León Orell Valerian Liehr 2025-02-25 13:07:40 +01:00 • committed by GitHub
commit 1511ccd6f8
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8 changed files with 13 additions and 280 deletions
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2
compiler/rustc_hir_analysis/src/check/intrinsic.rs
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@ -645,7 +645,6 @@ pub fn check_intrinsic_type(
| sym::simd_xor
| sym::simd_fmin
| sym::simd_fmax
| sym::simd_fpow
| sym::simd_saturating_add
| sym::simd_saturating_sub => (1, 0, vec![param(0), param(0)], param(0)),
sym::simd_arith_offset => (2, 0, vec![param(0), param(1)], param(0)),
@ -668,7 +667,6 @@ pub fn check_intrinsic_type(
| sym::simd_floor
| 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 | sym::simd_relaxed_fma => {
(1, 0, vec![param(0), param(0), param(0)], param(0))
}