Rollup merge of #137447 - folkertdev:simd-extract-insert-dyn, r=scottmcm

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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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Stuart Cook 2025-04-11 13:31:43 +10:00 committed by GitHub

parent a9f8f1e82b 4574a7794a

commit cc1799b354

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