rust-lang/rust
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

cg_gcc: properly populate cfg(target_features) with -Ctarget-features

Browse Source
This commit is contained in:
Ralf Jung
2025-05-11 12:50:48 +02:00
parent e46c234ca4
commit 8bec5bb5ad
3 changed files with 37 additions and 47 deletions
Download Patch File Download Diff File Expand all files Collapse all files

39
compiler/rustc_codegen_gcc/src/lib.rs
View File

@@ -102,10 +102,9 @@ use rustc_codegen_ssa::back::write::{
CodegenContext, FatLtoInput, ModuleConfig, TargetMachineFactoryFn,
};
use rustc_codegen_ssa::base::codegen_crate;
use rustc_codegen_ssa::target_features::cfg_target_feature;
use rustc_codegen_ssa::traits::{CodegenBackend, ExtraBackendMethods, WriteBackendMethods};
use rustc_codegen_ssa::{
CodegenResults, CompiledModule, ModuleCodegen, TargetConfig, target_features,
};
use rustc_codegen_ssa::{CodegenResults, CompiledModule, ModuleCodegen, TargetConfig};
use rustc_data_structures::fx::FxIndexMap;
use rustc_data_structures::sync::IntoDynSyncSend;
use rustc_errors::DiagCtxtHandle;
@@ -478,25 +477,21 @@ fn to_gcc_opt_level(optlevel: Option<OptLevel>) -> OptimizationLevel {
/// Returns the features that should be set in `cfg(target_feature)`.
fn target_config(sess: &Session, target_info: &LockedTargetInfo) -> TargetConfig {
let (unstable_target_features, target_features) = target_features::cfg_target_feature(
sess,
/* FIXME: we ignore `-Ctarget-feature` */ "",
|feature| {
// TODO: we disable Neon for now since we don't support the LLVM intrinsics for it.
if feature == "neon" {
return false;
}
target_info.cpu_supports(feature)
// cSpell:disable
/*
adx, aes, avx, avx2, avx512bf16, avx512bitalg, avx512bw, avx512cd, avx512dq, avx512er, avx512f, avx512fp16, avx512ifma,
avx512pf, avx512vbmi, avx512vbmi2, avx512vl, avx512vnni, avx512vp2intersect, avx512vpopcntdq,
bmi1, bmi2, cmpxchg16b, ermsb, f16c, fma, fxsr, gfni, lzcnt, movbe, pclmulqdq, popcnt, rdrand, rdseed, rtm,
sha, sse, sse2, sse3, sse4.1, sse4.2, sse4a, ssse3, tbm, vaes, vpclmulqdq, xsave, xsavec, xsaveopt, xsaves
*/
// cSpell:enable
},
);
let (unstable_target_features, target_features) = cfg_target_feature(sess, |feature| {
// TODO: we disable Neon for now since we don't support the LLVM intrinsics for it.
if feature == "neon" {
return false;
}
target_info.cpu_supports(feature)
// cSpell:disable
/*
adx, aes, avx, avx2, avx512bf16, avx512bitalg, avx512bw, avx512cd, avx512dq, avx512er, avx512f, avx512fp16, avx512ifma,
avx512pf, avx512vbmi, avx512vbmi2, avx512vl, avx512vnni, avx512vp2intersect, avx512vpopcntdq,
bmi1, bmi2, cmpxchg16b, ermsb, f16c, fma, fxsr, gfni, lzcnt, movbe, pclmulqdq, popcnt, rdrand, rdseed, rtm,
sha, sse, sse2, sse3, sse4.1, sse4.2, sse4a, ssse3, tbm, vaes, vpclmulqdq, xsave, xsavec, xsaveopt, xsaves
*/
// cSpell:enable
});
let has_reliable_f16 = target_info.supports_target_dependent_type(CType::Float16);
let has_reliable_f128 = target_info.supports_target_dependent_type(CType::Float128);