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[InstCombine] use dyn_cast instead of isa+cast; NFC

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This commit is contained in:
Sanjay Patel 2023-03-03 12:48:59 -05:00
parent 8794712e88
commit 870e6b6e65
1 changed files with 4 additions and 5 deletions
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9
llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp
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@ -1389,11 +1389,10 @@ Instruction *InstCombinerImpl::visitPHINode(PHINode &PN) {
// If all PHI operands are the same operation, pull them through the PHI,
// reducing code size.
if (isa<Instruction>(PN.getIncomingValue(0)) &&
isa<Instruction>(PN.getIncomingValue(1)) &&
cast<Instruction>(PN.getIncomingValue(0))->getOpcode() ==
cast<Instruction>(PN.getIncomingValue(1))->getOpcode() &&
PN.getIncomingValue(0)->hasOneUser())
auto *Inst0 = dyn_cast<Instruction>(PN.getIncomingValue(0));
auto *Inst1 = dyn_cast<Instruction>(PN.getIncomingValue(1));
if (Inst0 && Inst1 && Inst0->getOpcode() == Inst1->getOpcode() &&
Inst0->hasOneUser())
if (Instruction *Result = foldPHIArgOpIntoPHI(PN))
return Result;