Add inline-llvm option for disabling/enabling LLVM inlining

2022-08-08 16:58:27 -07:00
parent 24d6992020
commit 052887e4b4
3 changed files with 7 additions and 0 deletions
--- a/compiler/rustc_codegen_llvm/src/attributes.rs
+++ b/compiler/rustc_codegen_llvm/src/attributes.rs
@@ -35,6 +35,10 @@ pub fn apply_to_callsite(callsite: &Value, idx: AttributePlace, attrs: &[&Attrib
 /// Get LLVM attribute for the provided inline heuristic.
 #[inline]
 fn inline_attr<'ll>(cx: &CodegenCx<'ll, '_>, inline: InlineAttr) -> Option<&'ll Attribute> {
+    if !cx.tcx.sess.opts.unstable_opts.inline_llvm {
+        // disable LLVM inlining
+        return Some(AttributeKind::NoInline.create_attr(cx.llcx));
+    }
    match inline {
        InlineAttr::Hint => Some(AttributeKind::InlineHint.create_attr(cx.llcx)),
        InlineAttr::Always => Some(AttributeKind::AlwaysInline.create_attr(cx.llcx)),