tsan: do not imitate memory write on malloc() (Go)
better memory range access functions (put only 1 event to trace) (Go)
llvm-svn: 175056
diff --git a/compiler-rt/lib/tsan/rtl/tsan_rtl_thread.cc b/compiler-rt/lib/tsan/rtl/tsan_rtl_thread.cc
index 3af42e4..f25fb41 100644
--- a/compiler-rt/lib/tsan/rtl/tsan_rtl_thread.cc
+++ b/compiler-rt/lib/tsan/rtl/tsan_rtl_thread.cc
@@ -422,4 +422,26 @@
shadow_mem, cur);
}
}
+
+void MemoryAccessRangeStep(ThreadState *thr, uptr pc, uptr addr,
+ uptr size, uptr step, bool is_write) {
+ if (size == 0)
+ return;
+ FastState fast_state = thr->fast_state;
+ if (fast_state.GetIgnoreBit())
+ return;
+ StatInc(thr, StatMopRange);
+ fast_state.IncrementEpoch();
+ thr->fast_state = fast_state;
+ TraceAddEvent(thr, fast_state, EventTypeMop, pc);
+
+ for (uptr addr_end = addr + size; addr < addr_end; addr += step) {
+ u64 *shadow_mem = (u64*)MemToShadow(addr);
+ Shadow cur(fast_state);
+ cur.SetWrite(is_write);
+ cur.SetAddr0AndSizeLog(addr & (kShadowCell - 1), kSizeLog1);
+ MemoryAccessImpl(thr, addr, kSizeLog1, is_write, false,
+ shadow_mem, cur);
+ }
+}
} // namespace __tsan