codegen: memmove/memset cannot be non-temporal

2024-05-09 18:27:27 +02:00
parent 8c7c151a7a
commit 95582e6fcb
2 changed files with 5 additions and 9 deletions
--- a/compiler/rustc_codegen_llvm/src/builder.rs
+++ b/compiler/rustc_codegen_llvm/src/builder.rs
@@ -976,6 +976,7 @@ impl<'a, 'll, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
        align: Align,
        flags: MemFlags,
    ) {
+        assert!(!flags.contains(MemFlags::NONTEMPORAL), "non-temporal memset not supported");
        let is_volatile = flags.contains(MemFlags::VOLATILE);
        unsafe {
            llvm::LLVMRustBuildMemSet(