Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Unconditionally emit the target-cpu LLVM attribute. #56609

Merged
merged 1 commit into from
Dec 14, 2018
Merged

Unconditionally emit the target-cpu LLVM attribute. #56609

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
10 changes: 3 additions & 7 deletions src/librustc_codegen_llvm/attributes.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@ use rustc::session::config::Sanitizer;
use rustc::ty::TyCtxt;
use rustc::ty::layout::HasTyCtxt;
use rustc::ty::query::Providers;
use rustc_data_structures::small_c_str::SmallCStr;
use rustc_data_structures::sync::Lrc;
use rustc_data_structures::fx::FxHashMap;
use rustc_target::spec::PanicStrategy;
Expand Down Expand Up @@ -129,8 +130,7 @@ pub fn llvm_target_features(sess: &Session) -> impl Iterator<Item = &str> {
}

pub fn apply_target_cpu_attr(cx: &CodegenCx<'ll, '_>, llfn: &'ll Value) {
let cpu = llvm_util::target_cpu(cx.tcx.sess);
let target_cpu = CString::new(cpu).unwrap();
let target_cpu = SmallCStr::new(llvm_util::target_cpu(cx.tcx.sess));
llvm::AddFunctionAttrStringValue(
llfn,
llvm::AttributePlace::Function,
Expand Down Expand Up @@ -220,11 +220,7 @@ pub fn from_fn_attrs(
// Always annotate functions with the target-cpu they are compiled for.
// Without this, ThinLTO won't inline Rust functions into Clang generated
// functions (because Clang annotates functions this way too).
// NOTE: For now we just apply this if -Zcross-lang-lto is specified, since
// it introduce a little overhead and isn't really necessary otherwise.
if cx.tcx.sess.opts.debugging_opts.cross_lang_lto.enabled() {
apply_target_cpu_attr(cx, llfn);
}
apply_target_cpu_attr(cx, llfn);

let features = llvm_target_features(cx.tcx.sess)
.map(|s| s.to_string())
Expand Down