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Rollup merge of #148338 - durin42:llvm-22-amx-transpose, r=workingjubilee

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cleanup: upstream dropped amx-transpose functionality

See also LLVM change 5322fb626820. Looks like this was just removed entirely.
It seems a little bad to just drop it, but I don't see an easy way to conditionalize
this and if it's really just Gone and we marked it as unstable (which it looks like
we did?) I guess we should just dump it.

````@rustbot```` label llvm-main
This commit is contained in:
Matthias Krüger 2025-11-01 08:25:47 +01:00 • committed by GitHub
commit e8989b97c8
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1
compiler/rustc_target/src/target_features.rs
View file

@ -386,7 +386,6 @@ static X86_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
("amx-movrs", Unstable(sym::x86_amx_intrinsics), &["amx-tile"]),
("amx-tf32", Unstable(sym::x86_amx_intrinsics), &["amx-tile"]),
("amx-tile", Unstable(sym::x86_amx_intrinsics), &[]),
("amx-transpose", Unstable(sym::x86_amx_intrinsics), &["amx-tile"]),
("apxf", Unstable(sym::apx_target_feature), &[]),
("avx", Stable, &["sse4.2"]),
("avx2", Stable, &["avx"]),

3
library/std_detect/src/detect/arch/x86.rs
View file

@ -93,7 +93,6 @@ features! {
/// * `"amx-fp8"`
/// * `"amx-movrs"`
/// * `"amx-tf32"`
/// * `"amx-transpose"`
/// * `"f16c"`
/// * `"fma"`
/// * `"bmi1"`
@ -231,8 +230,6 @@ features! {
/// AMX-MOVRS (Matrix MOVERS operations)
@FEATURE: #[unstable(feature = "x86_amx_intrinsics", issue = "126622")] amx_tf32: "amx-tf32";
/// AMX-TF32 (TensorFloat32 Operations)
@FEATURE: #[unstable(feature = "x86_amx_intrinsics", issue = "126622")] amx_transpose: "amx-transpose";
/// AMX-TRANSPOSE (Matrix Transpose Operations)
@FEATURE: #[unstable(feature = "apx_target_feature", issue = "139284")] apxf: "apxf";
/// APX-F (Advanced Performance Extensions - Foundation)
@FEATURE: #[unstable(feature = "avx10_target_feature", issue = "138843")] avx10_1: "avx10.1";

1
library/std_detect/src/detect/os/x86.rs
View file

@ -285,7 +285,6 @@ pub(crate) fn detect_features() -> cache::Initializer {
unsafe { __cpuid_count(0x1e_u32, 1) };
enable(amx_feature_flags_eax, 4, Feature::amx_fp8);
enable(amx_feature_flags_eax, 5, Feature::amx_transpose);
enable(amx_feature_flags_eax, 6, Feature::amx_tf32);
enable(amx_feature_flags_eax, 7, Feature::amx_avx512);
enable(amx_feature_flags_eax, 8, Feature::amx_movrs);

1
library/std_detect/tests/x86-specific.rs
View file

@ -76,7 +76,6 @@ fn dump() {
println!("widekl: {:?}", is_x86_feature_detected!("widekl"));
println!("movrs: {:?}", is_x86_feature_detected!("movrs"));
println!("amx-fp8: {:?}", is_x86_feature_detected!("amx-fp8"));
println!("amx-transpose: {:?}", is_x86_feature_detected!("amx-transpose"));
println!("amx-tf32: {:?}", is_x86_feature_detected!("amx-tf32"));
println!("amx-avx512: {:?}", is_x86_feature_detected!("amx-avx512"));
println!("amx-movrs: {:?}", is_x86_feature_detected!("amx-movrs"));

1
tests/ui/check-cfg/target_feature.stderr
View file

@ -27,7 +27,6 @@ LL | cfg!(target_feature = "_UNEXPECTED_VALUE");
`amx-movrs`
`amx-tf32`
`amx-tile`
`amx-transpose`
`apxf`
`atomics`
`avx`