Runtime detection of VEX variants of AVX512

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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Runtime detection of VEX variants of AVX512 #1586

Closed sayantn closed 2 weeks ago

sayantn commented 3 weeks ago

Added run-time detection for 5 new x86 target features. Expanded the Cache size to 93.

AVX-IFMA
AVX-NE-CONVERT
AVX-VNNI
AVX-VNNI_INT8
AVX-VNNI_INT16

Fixed run-time detection of VAES, GFNI, VPCLMULQDQ (they do not need AVX512 support, the 512-bit versions need AVX512F, and that should be handled in target-feature attributes of the intrinsics.

See also the rustc PR

rustbot commented 3 weeks ago

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