From 1fc08f5e9ef733ef1ce6f363fecedc2260e78974 Mon Sep 17 00:00:00 2001
From: dim <dim@FreeBSD.org>
Date: Sat, 14 Apr 2012 13:54:10 +0000
Subject: Vendor import of llvm trunk r154661:
 http://llvm.org/svn/llvm-project/llvm/trunk@r154661

---
 lib/Support/Valgrind.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'lib/Support/Valgrind.cpp')

diff --git a/lib/Support/Valgrind.cpp b/lib/Support/Valgrind.cpp
index 7034485..2b250a3 100644
--- a/lib/Support/Valgrind.cpp
+++ b/lib/Support/Valgrind.cpp
@@ -52,3 +52,16 @@ void llvm::sys::ValgrindDiscardTranslations(const void *Addr, size_t Len) {
 }
 
 #endif  // !HAVE_VALGRIND_VALGRIND_H
+
+#if LLVM_ENABLE_THREADS != 0 && !defined(NDEBUG)
+// These functions require no implementation, tsan just looks at the arguments
+// they're called with.
+extern "C" {
+void AnnotateHappensBefore(const char *file, int line,
+                           const volatile void *cv) {}
+void AnnotateHappensAfter(const char *file, int line,
+                          const volatile void *cv) {}
+void AnnotateIgnoreWritesBegin(const char *file, int line) {}
+void AnnotateIgnoreWritesEnd(const char *file, int line) {}
+}
+#endif
-- 
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