From 8cb0b6ca5bf1321d38f4602113b0f41c837d0586 Mon Sep 17 00:00:00 2001
From: Erik Desjardins <erikdesjardins@users.noreply.github.com>
Date: Sat, 5 Feb 2022 01:00:37 -0500
Subject: Apply noundef attribute to &T, &mut T, Box<T>, bool

This doesn't handle `char` because it's a bit awkward to distinguish it
from u32 at this point in codegen.

Note that for some types (like `&Struct` and `&mut Struct`),
we already apply `dereferenceable`, which implies `noundef`,
so the IR does not change.
---
 compiler/rustc_codegen_llvm/src/llvm/ffi.rs | 1 +
 1 file changed, 1 insertion(+)

(limited to 'compiler/rustc_codegen_llvm/src/llvm')

diff --git a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
index 367c86a1dc9..4f62c685568 100644
--- a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
@@ -189,6 +189,7 @@ pub enum Attribute {
     StackProtectReq = 30,
     StackProtectStrong = 31,
     StackProtect = 32,
+    NoUndef = 33,
 }
 
 /// LLVMIntPredicate
-- 
cgit 1.4.1-3-g733a5