forked from OSchip/llvm-project
Adjust to changes in instruction interfaces.
llvm-svn: 19900
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a3f06fa2dd
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@ -156,13 +156,12 @@ void DSE::DeleteDeadInstructionChains(Instruction *I,
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// See if this made any operands dead. We do it this way in case the
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// instruction uses the same operand twice. We don't want to delete a
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// value then reference it.
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while (unsigned NumOps = I->getNumOperands()) {
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Instruction *Op = dyn_cast<Instruction>(I->getOperand(NumOps-1));
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I->op_erase(I->op_end()-1); // Drop from the operand list.
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if (Op) DeadInsts.insert(Op); // Attempt to nuke it later.
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for (unsigned i = 0, e = I->getNumOperands(); i != e; ++i) {
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if (Instruction *Op = dyn_cast<Instruction>(I->getOperand(i)))
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DeadInsts.insert(Op); // Attempt to nuke it later.
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I->setOperand(i, 0); // Drop from the operand list.
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}
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I->getParent()->getInstList().erase(I);
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I->eraseFromParent();
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++NumOther;
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}
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@ -575,7 +575,7 @@ Instruction *InstCombiner::FoldOpIntoPhi(Instruction &I) {
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// Okay, we can do the transformation: create the new PHI node.
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PHINode *NewPN = new PHINode(I.getType(), I.getName());
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I.setName("");
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NewPN->op_reserve(PN->getNumOperands());
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NewPN->reserveOperandSpace(PN->getNumOperands()/2);
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InsertNewInstBefore(NewPN, *PN);
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// Next, add all of the operands to the PHI.
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@ -4142,7 +4142,7 @@ Instruction *InstCombiner::FoldPHIArgOpIntoPHI(PHINode &PN) {
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// correct type, and PHI together all of the LHS's of the instructions.
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PHINode *NewPN = new PHINode(FirstInst->getOperand(0)->getType(),
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PN.getName()+".in");
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NewPN->op_reserve(PN.getNumOperands());
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NewPN->reserveOperandSpace(PN.getNumOperands()/2);
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Value *InVal = FirstInst->getOperand(0);
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NewPN->addIncoming(InVal, PN.getIncomingBlock(0));
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@ -575,7 +575,7 @@ void LoopSimplify::InsertUniqueBackedgeBlock(Loop *L) {
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PHINode *PN = cast<PHINode>(I);
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PHINode *NewPN = new PHINode(PN->getType(), PN->getName()+".be",
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BETerminator);
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NewPN->op_reserve(2*BackedgeBlocks.size());
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NewPN->reserveOperandSpace(BackedgeBlocks.size());
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// Loop over the PHI node, moving all entries except the one for the
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// preheader over to the new PHI node.
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@ -604,7 +604,9 @@ void LoopSimplify::InsertUniqueBackedgeBlock(Loop *L) {
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PN->setIncomingValue(0, PN->getIncomingValue(PreheaderIdx));
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PN->setIncomingBlock(0, PN->getIncomingBlock(PreheaderIdx));
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}
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PN->op_erase(PN->op_begin()+2, PN->op_end());
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// Nuke all entries except the zero'th.
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for (unsigned i = 0, e = PN->getNumIncomingValues()-1; i != e; ++i)
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PN->removeIncomingValue(e-i, false);
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// Finally, add the newly constructed PHI node as the entry for the BEBlock.
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PN->addIncoming(NewPN, BEBlock);
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