Allow stat += 0 without activating the stat.
For me, this is a nice convenience. We generally want grep to match
stats output only when the event has occurred.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141574 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/llvm/ADT/Statistic.h b/include/llvm/ADT/Statistic.h
index 9bbda98..b8a1a2f 100644
--- a/include/llvm/ADT/Statistic.h
+++ b/include/llvm/ADT/Statistic.h
@@ -84,11 +84,13 @@
}
const Statistic &operator+=(const unsigned &V) {
+ if (!V) return *this;
sys::AtomicAdd(&Value, V);
return init();
}
const Statistic &operator-=(const unsigned &V) {
+ if (!V) return *this;
sys::AtomicAdd(&Value, -V);
return init();
}
