From 3604924799fc83da93ae4b8c1eb57ed9c9e734b5 Mon Sep 17 00:00:00 2001
From: Nick Lewycky <nicholas@mxc.ca>
Date: Sat, 3 Dec 2011 02:45:50 +0000
Subject: [PATCH] Creating multiple JITs on X86 in multiple threads causes
 multiple writes (of the same value) to this variable. This code could be
 refactored, but it doesn't matter since the old JIT is going away. Add tsan
 annotations to ignore the race.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145745 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/X86/X86JITInfo.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/Target/X86/X86JITInfo.cpp b/lib/Target/X86/X86JITInfo.cpp
index 3f88fa69d0e..2145a331de7 100644
--- a/lib/Target/X86/X86JITInfo.cpp
+++ b/lib/Target/X86/X86JITInfo.cpp
@@ -424,7 +424,9 @@ X86CompilationCallback2(intptr_t *StackPtr, intptr_t RetAddr) {
 
 TargetJITInfo::LazyResolverFn
 X86JITInfo::getLazyResolverFunction(JITCompilerFn F) {
+  TsanIgnoreWritesBegin();
   JITCompilerFunction = F;
+  TsanIgnoreWritesEnd();
 
 #if defined (X86_32_JIT) && !defined (_MSC_VER)
   if (Subtarget->hasSSE1())
-- 
2.34.1