[asan] fix the wrong __WORDSIZE definition on Win x64, add ASAN_INTERFACE_FUNCTION_ATTRIBUTE. Patch by timurrrr@google.com
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@149395 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/asan/asan_internal.h b/lib/asan/asan_internal.h
index eecedd6..65c825e 100644
--- a/lib/asan/asan_internal.h
+++ b/lib/asan/asan_internal.h
@@ -35,9 +35,9 @@
#endif // _WIN32
// If __WORDSIZE was undefined by the platform, define it in terms of the
-// compiler built-in __LP64__.
+// compiler built-ins __LP64__ and _WIN64.
#ifndef __WORDSIZE
-#if __LP64__
+#if __LP64__ || defined(_WIN64)
#define __WORDSIZE 64
#else
#define __WORDSIZE 32