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Add implied features to non-target-feature functions

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This commit is contained in:
Caleb Zulawski 2024-08-04 15:32:17 -04:00
parent 5006711744
commit 6b96a60611
3 changed files with 25 additions and 9 deletions
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26
compiler/rustc_codegen_llvm/src/llvm_util.rs
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@ -8,6 +8,7 @@ use libc::c_int;
use rustc_codegen_ssa::base::wants_wasm_eh;
use rustc_data_structures::fx::{FxHashMap, FxHashSet};
use rustc_data_structures::small_c_str::SmallCStr;
use rustc_data_structures::unord::UnordSet;
use rustc_fs_util::path_to_c_string;
use rustc_middle::bug;
use rustc_session::config::{PrintKind, PrintRequest};
@ -553,11 +554,26 @@ pub(crate) fn global_llvm_features(
let supported_features = sess.target.supported_target_features();
let (llvm_major, _, _) = get_version();
let mut featsmap = FxHashMap::default();
let feats = sess
.opts
.cg
.target_feature
.split(',')
// insert implied features
let mut all_rust_features = vec![];
for feature in sess.opts.cg.target_feature.split(',') {
match feature.strip_prefix('+') {
Some(feature) => all_rust_features.extend(
UnordSet::from(
sess.target
.implied_target_features(std::iter::once(Symbol::intern(feature))),
)
.to_sorted_stable_ord()
.iter()
.map(|s| format!("+{}", s.as_str())),
),
_ => all_rust_features.push(feature.to_string()),
}
}
let feats = all_rust_features
.iter()
.filter_map(|s| {
let enable_disable = match s.chars().next() {
None => return None,