Add -Zfixed-x18

Signed-off-by: Alice Ryhl <aliceryhl@google.com>
2024-05-03 14:32:01 +02:00
parent 79734f1db8
commit 40f0172c6a
5 changed files with 62 additions and 0 deletions
--- a/compiler/rustc_codegen_llvm/src/llvm_util.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm_util.rs
@@ -615,6 +615,11 @@ pub(crate) fn global_llvm_features(sess: &Session, diagnostics: bool) -> Vec<Str
        .flatten();
    features.extend(feats);

+    // -Zfixed-x18
+    if sess.opts.unstable_opts.fixed_x18 {
+        features.push("+reserve-x18".into());
+    }
+
    if diagnostics && let Some(f) = check_tied_features(sess, &featsmap) {
        sess.dcx().emit_err(TargetFeatureDisableOrEnable {
            features: f,