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Minor code cleanups.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91280 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2009-12-14 16:37:29 +00:00
parent ffe966c15b
commit b058ceda56
1 changed files with 2 additions and 4 deletions
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6
lib/Transforms/Scalar/LoopStrengthReduce.cpp
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@ -228,19 +228,17 @@ void LoopStrengthReduce::DeleteTriviallyDeadInstructions() {
if (DeadInsts.empty()) return; if (DeadInsts.empty()) return;
while (!DeadInsts.empty()) { while (!DeadInsts.empty()) {
Instruction *I = dyn_cast_or_null<Instruction>(DeadInsts.back()); Instruction *I = dyn_cast_or_null<Instruction>(DeadInsts.pop_back_val());
DeadInsts.pop_back();
if (I == 0 || !isInstructionTriviallyDead(I)) if (I == 0 || !isInstructionTriviallyDead(I))
continue; continue;
for (User::op_iterator OI = I->op_begin(), E = I->op_end(); OI != E; ++OI) { for (User::op_iterator OI = I->op_begin(), E = I->op_end(); OI != E; ++OI)
if (Instruction *U = dyn_cast<Instruction>(*OI)) { if (Instruction *U = dyn_cast<Instruction>(*OI)) {
*OI = 0; *OI = 0;
if (U->use_empty()) if (U->use_empty())
DeadInsts.push_back(U); DeadInsts.push_back(U);
} }
}
I->eraseFromParent(); I->eraseFromParent();
Changed = true; Changed = true;