[compiler-rt] r281992 - tsan: revert r281970

[Dmitry Vyukov via llvm-commits]

Author: dvyukov
Date: Tue Sep 20 13:05:06 2016
New Revision: 281992

URL: http://llvm.org/viewvc/llvm-project?rev=281992&view=rev
Log:
tsan: revert r281970

r281970 extended the check in a useful way,
but caused (true) failures on aarch64.
Revert it for now.


Modified:
    compiler-rt/trunk/lib/tsan/rtl/tsan_rtl.cc

Modified: compiler-rt/trunk/lib/tsan/rtl/tsan_rtl.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/tsan/rtl/tsan_rtl.cc?rev=281992&r1=281991&r2=281992&view=diff
==============================================================================
--- compiler-rt/trunk/lib/tsan/rtl/tsan_rtl.cc (original)
+++ compiler-rt/trunk/lib/tsan/rtl/tsan_rtl.cc Tue Sep 20 13:05:06 2016
@@ -292,7 +292,7 @@ static void CheckShadowMapping() {
     if (beg ==end)
       continue;
     VPrintf(3, "checking shadow region %p-%p\n", beg, end);
-    for (uptr p0 = beg; p0 <= end; p0 += (end - beg) / 16) {
+    for (uptr p0 = beg; p0 <= end; p0 += (end - beg) / 4) {
       for (int x = -1; x <= 1; x++) {
         const uptr p = p0 + x;
         if (p < beg || p >= end)