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[NFC] Remove meaningless code from GVN

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llvm-svn: 342202
This commit is contained in:
Max Kazantsev 2018-09-14 04:50:38 +00:00
parent 5053e93d46
commit 79083b107c
1 changed files with 0 additions and 6 deletions
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6
lib/Transforms/Scalar/GVN.cpp
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@ -2073,18 +2073,12 @@ bool GVN::processBlock(BasicBlock *BB) {
if (!AtStart)
--BI;
const Instruction *MaybeFirstICF = ICF->getFirstICFI(BB);
for (auto *I : InstrsToErase) {
assert(I->getParent() == BB && "Removing instruction from wrong block?");
LLVM_DEBUG(dbgs() << "GVN removed: " << *I << '\n');
salvageDebugInfo(*I);
if (MD) MD->removeInstruction(I);
LLVM_DEBUG(verifyRemoved(I));
if (MaybeFirstICF == I) {
// We have erased the first ICF in block. The map needs to be updated.
// Do not keep dangling pointer on the erased instruction.
MaybeFirstICF = nullptr;
}
I->eraseFromParent();
}