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Update aux. info associated with an instruction before erasing instruction.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42180 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2007-09-20 23:45:50 +00:00
parent 0f0daea654
commit 9ee49c541b
1 changed files with 12 additions and 12 deletions
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24
lib/Transforms/Scalar/LoopUnswitch.cpp
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@ -583,8 +583,8 @@ void LoopUnswitch::UnswitchTrivialCondition(Loop *L, Value *Cond,
// insert the new conditional branch.
EmitPreheaderBranchOnCondition(Cond, Val, NewExit, NewPH,
OrigPH->getTerminator());
OrigPH->getTerminator()->eraseFromParent();
LPM->deleteSimpleAnalysisValue(OrigPH->getTerminator(), L);
OrigPH->getTerminator()->eraseFromParent();
// We need to reprocess this loop, it could be unswitched again.
redoLoop = true;
@ -759,8 +759,8 @@ void LoopUnswitch::UnswitchNontrivialCondition(Value *LIC, Constant *Val,
// Emit the new branch that selects between the two versions of this loop.
EmitPreheaderBranchOnCondition(LIC, Val, NewBlocks[0], LoopBlocks[0], OldBR);
OldBR->eraseFromParent();
LPM->deleteSimpleAnalysisValue(OldBR, L);
OldBR->eraseFromParent();
// Update dominator info
if (DF && DT) {
@ -859,10 +859,10 @@ static void ReplaceUsesOfWith(Instruction *I, Value *V,
for (Value::use_iterator UI = I->use_begin(), E = I->use_end();
UI != E; ++UI)
Worklist.push_back(cast<Instruction>(*UI));
I->replaceAllUsesWith(V);
I->eraseFromParent();
LPM->deleteSimpleAnalysisValue(I, L);
RemoveFromWorklist(I, Worklist);
I->replaceAllUsesWith(V);
I->eraseFromParent();
++NumSimplify;
}
@ -889,8 +889,8 @@ void LoopUnswitch::RemoveBlockIfDead(BasicBlock *BB,
// Remove the branch from the latch to the header block, this makes
// the header dead, which will make the latch dead (because the header
// dominates the latch).
Pred->getTerminator()->eraseFromParent();
LPM->deleteSimpleAnalysisValue(Pred->getTerminator(), L);
Pred->getTerminator()->eraseFromParent();
new UnreachableInst(Pred);
// The loop is now broken, remove it from LI.
@ -947,8 +947,8 @@ void LoopUnswitch::RemoveBlockIfDead(BasicBlock *BB,
Succs.erase(std::unique(Succs.begin(), Succs.end()), Succs.end());
// Remove the basic block, including all of the instructions contained in it.
BB->eraseFromParent();
LPM->deleteSimpleAnalysisValue(BB, L);
BB->eraseFromParent();
// Remove successor blocks here that are not dead, so that we know we only
// have dead blocks in this list. Nondead blocks have a way of becoming dead,
// then getting removed before we revisit them, which is badness.
@ -1050,10 +1050,10 @@ void LoopUnswitch::RewriteLoopBodyWithConditionConstant(Loop *L, Value *LIC,
Instruction* OldTerm = Old->getTerminator();
new BranchInst(Split, SI->getSuccessor(i),
ConstantInt::getTrue(), OldTerm);
LPM->deleteSimpleAnalysisValue(Old->getTerminator(), L);
Old->getTerminator()->eraseFromParent();
PHINode *PN;
for (BasicBlock::iterator II = SI->getSuccessor(i)->begin();
(PN = dyn_cast<PHINode>(II)); ++II) {
@ -1103,9 +1103,9 @@ void LoopUnswitch::SimplifyCode(std::vector<Instruction*> &Worklist, Loop *L) {
for (unsigned i = 0, e = I->getNumOperands(); i != e; ++i)
if (Instruction *Use = dyn_cast<Instruction>(I->getOperand(i)))
Worklist.push_back(Use);
I->eraseFromParent();
LPM->deleteSimpleAnalysisValue(I, L);
RemoveFromWorklist(I, Worklist);
I->eraseFromParent();
++NumSimplify;
continue;
}
@ -1166,8 +1166,8 @@ void LoopUnswitch::SimplifyCode(std::vector<Instruction*> &Worklist, Loop *L) {
// Move all of the successor contents from Succ to Pred.
Pred->getInstList().splice(BI, Succ->getInstList(), Succ->begin(),
Succ->end());
BI->eraseFromParent();
LPM->deleteSimpleAnalysisValue(BI, L);
BI->eraseFromParent();
RemoveFromWorklist(BI, Worklist);
// If Succ has any successors with PHI nodes, update them to have
@ -1176,8 +1176,8 @@ void LoopUnswitch::SimplifyCode(std::vector<Instruction*> &Worklist, Loop *L) {
// Remove Succ from the loop tree.
LI->removeBlock(Succ);
Succ->eraseFromParent();
LPM->deleteSimpleAnalysisValue(Succ, L);
Succ->eraseFromParent();
++NumSimplify;
} else if (ConstantInt *CB = dyn_cast<ConstantInt>(BI->getCondition())){
// Conditional branch. Turn it into an unconditional branch, then
@ -1189,8 +1189,8 @@ void LoopUnswitch::SimplifyCode(std::vector<Instruction*> &Worklist, Loop *L) {
BasicBlock *LiveSucc = BI->getSuccessor(!CB->getZExtValue());
DeadSucc->removePredecessor(BI->getParent(), true);
Worklist.push_back(new BranchInst(LiveSucc, BI));
BI->eraseFromParent();
LPM->deleteSimpleAnalysisValue(BI, L);
BI->eraseFromParent();
RemoveFromWorklist(BI, Worklist);
++NumSimplify;