[TSan] Provide default values for compile definitions.
Provide defaults for TSAN_COLLECT_STATS and TSAN_NO_HISTORY.
Replace #ifdef directives with #if. This fixes a bug introduced
in r229112, where building TSan runtime with -DTSAN_COLLECT_STATS=0
would still enable stats collection and reporting.
llvm-svn: 229581
diff --git a/compiler-rt/lib/tsan/rtl/tsan_defs.h b/compiler-rt/lib/tsan/rtl/tsan_defs.h
index 971178d..910a483 100644
--- a/compiler-rt/lib/tsan/rtl/tsan_defs.h
+++ b/compiler-rt/lib/tsan/rtl/tsan_defs.h
@@ -18,6 +18,15 @@
#include "sanitizer_common/sanitizer_libc.h"
#include "tsan_stat.h"
+// Setup defaults for compile definitions.
+#ifndef TSAN_NO_HISTORY
+# define TSAN_NO_HISTORY 0
+#endif
+
+#ifndef TSAN_COLLECT_STATS
+# define TSAN_COLLECT_STATS 0
+#endif
+
namespace __tsan {
#ifdef SANITIZER_GO
@@ -63,7 +72,7 @@
// Size of a single meta shadow value (u32).
const uptr kMetaShadowSize = 4;
-#if defined(TSAN_NO_HISTORY) && TSAN_NO_HISTORY
+#if TSAN_NO_HISTORY
const bool kCollectHistory = false;
#else
const bool kCollectHistory = true;