import LLVM SIMD intrinsics from core rather than declaring them locally

rust-lang / stdarch

Rust's standard library vendor-specific APIs and run-time feature detection

https://doc.rust-lang.org/stable/core/arch/

Apache License 2.0

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import LLVM SIMD intrinsics from core rather than declaring them locally #1529

Closed RalfJung closed 5 months ago

RalfJung commented 5 months ago

These intrinsics are very tied to rustc so it's nicer to have them in the same repo as rustc. This also lets us share the definitions with portable-simd.

However it turns out some intrinsics are still missing on the rustc side, I will add them there. Also some intrinsics seem to be entirely unused:

simd_reduce_min_nanless
simd_reduce_max_nanless
simd_fsin
simd_fcos
simd_fexp
simd_fexp2
simd_flog10
simd_flog2
simd_flog

rustbot commented 5 months ago

r? @Amanieu

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