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Minor code cleanups.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91280 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -228,19 +228,17 @@ void LoopStrengthReduce::DeleteTriviallyDeadInstructions() {
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if (DeadInsts.empty()) return;
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while (!DeadInsts.empty()) {
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Instruction *I = dyn_cast_or_null<Instruction>(DeadInsts.back());
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DeadInsts.pop_back();
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Instruction *I = dyn_cast_or_null<Instruction>(DeadInsts.pop_back_val());
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if (I == 0 || !isInstructionTriviallyDead(I))
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continue;
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for (User::op_iterator OI = I->op_begin(), E = I->op_end(); OI != E; ++OI) {
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for (User::op_iterator OI = I->op_begin(), E = I->op_end(); OI != E; ++OI)
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if (Instruction *U = dyn_cast<Instruction>(*OI)) {
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*OI = 0;
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if (U->use_empty())
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DeadInsts.push_back(U);
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}
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}
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I->eraseFromParent();
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Changed = true;
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