Simplify overflow-on-add check in NumericLiteralParser::GetIntegerValue.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57629 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/LiteralSupport.cpp b/lib/Lex/LiteralSupport.cpp
index f63e6cf..1b86ba5 100644
--- a/lib/Lex/LiteralSupport.cpp
+++ b/lib/Lex/LiteralSupport.cpp
@@ -481,10 +481,9 @@
Val *= RadixVal;
OverflowOccurred |= Val.udiv(RadixVal) != OldVal;
- OldVal = Val;
// Add value, did overflow occur on the value?
+ // (a + b) ult b <=> overflow
Val += CharVal;
- OverflowOccurred |= Val.ult(OldVal);
OverflowOccurred |= Val.ult(CharVal);
}
return OverflowOccurred;