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45ebc4060b
add `core::intrinsics::simd::{simd_extract_dyn, simd_insert_dyn}`
fixes https://github.com/rust-lang/rust/issues/137372
adds `core::intrinsics::simd::{simd_extract_dyn, simd_insert_dyn}`, which contrary to their non-dyn counterparts allow a non-const index. Many platforms (but notably not x86_64 or aarch64) have dedicated instructions for this operation, which stdarch can emit with this change.
Future work is to also make the `Index` operation on the `Simd` type emit this operation, but the intrinsic can't be used directly. We'll need some MIR shenanigans for that.
r? `@ghost`
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|---|---|---|
| .. | ||
| extract-insert-dyn.rs | ||
| packed-simd-alignment.rs | ||
| packed-simd.rs | ||
| project-to-simd-array-field.rs | ||
| simd_arith_offset.rs | ||
| simd-wide-sum.rs | ||
| swap-simd-types.rs | ||
| unpadded-simd.rs | ||