Use dyn_cast instead of isa && cast. No functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176537 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/ValueTracking.cpp b/lib/Analysis/ValueTracking.cpp
index 8e3994e..45b75df 100644
--- a/lib/Analysis/ValueTracking.cpp
+++ b/lib/Analysis/ValueTracking.cpp
@@ -1396,10 +1396,10 @@
return true;
// (add x, 0.0) is guaranteed to return +0.0, not -0.0.
- if (I->getOpcode() == Instruction::FAdd &&
- isa<ConstantFP>(I->getOperand(1)) &&
- cast<ConstantFP>(I->getOperand(1))->isNullValue())
- return true;
+ if (I->getOpcode() == Instruction::FAdd)
+ if (ConstantFP *CFP = dyn_cast<ConstantFP>(I->getOperand(1)))
+ if (CFP->isNullValue())
+ return true;
// sitofp and uitofp turn into +0.0 for zero.
if (isa<SIToFPInst>(I) || isa<UIToFPInst>(I))