diff options
Diffstat (limited to 'lib/Analysis')
| -rw-r--r-- | lib/Analysis/ValueTracking.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/lib/Analysis/ValueTracking.cpp b/lib/Analysis/ValueTracking.cpp index 8e3994e8f5..45b75df508 100644 --- a/lib/Analysis/ValueTracking.cpp +++ b/lib/Analysis/ValueTracking.cpp @@ -1396,10 +1396,10 @@ bool llvm::CannotBeNegativeZero(const Value *V, unsigned Depth) { 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)) |