[llvm] [BUILD] Fix unicode build issue. (PR #135315)

[Harrison Hao via llvm-commits]

https://github.com/harrisonGPU created https://github.com/llvm/llvm-project/pull/135315

Fix unicode build fail issue:
```
C4819	The file contains a character that cannot be represented in the current code page (936). Save the file in Unicode format to prevent data loss	...\llvm-project\llvm\include\llvm\Support\Compiler.h
```

>From 73508aaebe72765b68d33818b472180882a6a503 Mon Sep 17 00:00:00 2001
From: Harrison Hao <tsworld1314 at gmail.com>
Date: Fri, 11 Apr 2025 11:57:53 +0800
Subject: [PATCH] [BUILD] Fix unicode build issue.

---
 llvm/include/llvm/Support/Compiler.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/include/llvm/Support/Compiler.h b/llvm/include/llvm/Support/Compiler.h
index d3772896069cc..d265d864228ca 100644
--- a/llvm/include/llvm/Support/Compiler.h
+++ b/llvm/include/llvm/Support/Compiler.h
@@ -232,7 +232,7 @@
 
 // Only enabled for clang:
 // See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99587
-// GCC may produce "warning: ‘retain’ attribute ignored" (despite
+// GCC may produce "warning: 'retain' attribute ignored" (despite
 // __has_attribute(retain) being 1).
 #if defined(__clang__) && __has_attribute(retain)
 #define LLVM_ATTRIBUTE_RETAIN __attribute__((__retain__))