diff options
| author | Chris Lattner <sabre@nondot.org> | 2010-09-05 20:03:09 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2010-09-05 20:03:09 +0000 |
| commit | 05ef361b5e356e8832ae95b657f24d1a70b739e6 (patch) | |
| tree | d1ecdf9b03a5df571512f009db0814d94cd37008 /llvm/lib/Transforms/Scalar/JumpThreading.cpp | |
| parent | eea166dfd4568587adadc59fe0523976ee17c6e9 (diff) | |
| download | llvm-05ef361b5e356e8832ae95b657f24d1a70b739e6.zip llvm-05ef361b5e356e8832ae95b657f24d1a70b739e6.tar.gz llvm-05ef361b5e356e8832ae95b657f24d1a70b739e6.tar.bz2 | |
eliminate some non-obvious casts. UndefValue isa Constant.
llvm-svn: 113113
Diffstat (limited to 'llvm/lib/Transforms/Scalar/JumpThreading.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/JumpThreading.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/llvm/lib/Transforms/Scalar/JumpThreading.cpp b/llvm/lib/Transforms/Scalar/JumpThreading.cpp index 104d5ae..da0e216 100644 --- a/llvm/lib/Transforms/Scalar/JumpThreading.cpp +++ b/llvm/lib/Transforms/Scalar/JumpThreading.cpp @@ -443,8 +443,8 @@ ComputeValueKnownInPredecessors(Value *V, BasicBlock *BB,PredValueInfo &Result){ // 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(Value *V, BasicBlock *BB,PredValueInfo &Result){ 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); |