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rustc_target: Add various aarch64 features

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Add various aarch64 features already supported by LLVM and Linux.

The features are marked as unstable using a newly added symbol, i.e.
aarch64_unstable_target_feature.

Additionally include some comment fixes to ensure consistency of
feature names with the Arm ARM and support for architecture version
target features up to v9.5a.

This commit adds compiler support for the following features:

- FEAT_CSSC
- FEAT_ECV
- FEAT_FAMINMAX
- FEAT_FLAGM2
- FEAT_FP8
- FEAT_FP8DOT2
- FEAT_FP8DOT4
- FEAT_FP8FMA
- FEAT_FPMR
- FEAT_HBC
- FEAT_LSE128
- FEAT_LSE2
- FEAT_LUT
- FEAT_MOPS
- FEAT_LRCPC3
- FEAT_SVE_B16B16
- FEAT_SVE2p1
- FEAT_WFxT
This commit is contained in:
Kajetan Puchalski 2024-06-14 18:05:09 +01:00
parent ae9f5019f9
commit 4f847bd326
6 changed files with 75 additions and 5 deletions
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1
compiler/rustc_feature/src/unstable.rs
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@ -302,6 +302,7 @@ declare_features! (
// FIXME: Document these and merge with the list below.
// Unstable `#[target_feature]` directives.
(unstable, aarch64_unstable_target_feature, "CURRENT_RUSTC_VERSION", Some(44839)),
(unstable, aarch64_ver_target_feature, "1.27.0", Some(44839)),
(unstable, arm_target_feature, "1.27.0", Some(44839)),
(unstable, avx512_target_feature, "1.27.0", Some(44839)),