eliminate some non-obvious casts. UndefValue isa Constant.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113113 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/JumpThreading.cpp b/lib/Transforms/Scalar/JumpThreading.cpp
index 104d5ae..da0e216 100644
--- a/lib/Transforms/Scalar/JumpThreading.cpp
+++ b/lib/Transforms/Scalar/JumpThreading.cpp
@@ -443,8 +443,8 @@
// Try to use constant folding to simplify the binary operator.
for (unsigned i = 0, e = LHSVals.size(); i != e; ++i) {
- Constant *V = LHSVals[i].first ? LHSVals[i].first :
- cast<Constant>(UndefValue::get(BO->getType()));
+ Constant *V = LHSVals[i].first;
+ if (V == 0) V = UndefValue::get(BO->getType());
Constant *Folded = ConstantExpr::get(BO->getOpcode(), V, CI);
PushConstantIntOrUndef(Result, Folded, LHSVals[i].second);
@@ -518,8 +518,8 @@
ComputeValueKnownInPredecessors(I->getOperand(0), BB, LHSVals);
for (unsigned i = 0, e = LHSVals.size(); i != e; ++i) {
- Constant *V = LHSVals[i].first ? LHSVals[i].first :
- cast<Constant>(UndefValue::get(CmpConst->getType()));
+ Constant *V = LHSVals[i].first;
+ if (V == 0) V = UndefValue::get(CmpConst->getType());
Constant *Folded = ConstantExpr::getCompare(Cmp->getPredicate(),
V, CmpConst);
PushConstantIntOrUndef(Result, Folded, LHSVals[i].second);