Implement _mm_prefetch as nop

rust-lang · Jan 9, 2024 · 0dc13d7 · 0dc13d7
1 parent f69c2e7
commit 0dc13d7
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/intrinsics/llvm.rs b/src/intrinsics/llvm.rs
@@ -35,6 +35,10 @@ pub(crate) fn codegen_llvm_intrinsic_call<'tcx>(
     }
 
     match intrinsic {
+        "llvm.prefetch" => {
+            // Nothing to do. This is merely a perf hint.
+        }
+
         _ if intrinsic.starts_with("llvm.ctlz.v") => {
             intrinsic_args!(fx, args => (a); intrinsic);