tsan: touch less shadow memory during operations on big memory ranges
greatly reduces memory consumption
llvm-svn: 177289
diff --git a/compiler-rt/lib/tsan/rtl/tsan_rtl_thread.cc b/compiler-rt/lib/tsan/rtl/tsan_rtl_thread.cc
index 0372bb5..72b9f1a 100644
--- a/compiler-rt/lib/tsan/rtl/tsan_rtl_thread.cc
+++ b/compiler-rt/lib/tsan/rtl/tsan_rtl_thread.cc
@@ -201,7 +201,7 @@
if (tid) {
if (stk_addr && stk_size)
- MemoryResetRange(thr, /*pc=*/ 1, stk_addr, stk_size);
+ MemoryRangeImitateWrite(thr, /*pc=*/ 1, stk_addr, stk_size);
if (tls_addr && tls_size) {
// Check that the thr object is in tls;
@@ -212,8 +212,9 @@
CHECK_GE(thr_end, tls_addr);
CHECK_LE(thr_end, tls_addr + tls_size);
// Since the thr object is huge, skip it.
- MemoryResetRange(thr, /*pc=*/ 2, tls_addr, thr_beg - tls_addr);
- MemoryResetRange(thr, /*pc=*/ 2, thr_end, tls_addr + tls_size - thr_end);
+ MemoryRangeImitateWrite(thr, /*pc=*/ 2, tls_addr, thr_beg - tls_addr);
+ MemoryRangeImitateWrite(thr, /*pc=*/ 2,
+ thr_end, tls_addr + tls_size - thr_end);
}
}