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Increment iterator now because IVUseShouldUsePostIncValue may remove
User from the list of I users. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35051 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -401,9 +401,13 @@ bool LoopStrengthReduce::AddUsersIfInteresting(Instruction *I, Loop *L,
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if (!getSCEVStartAndStride(ISE, L, Start, Stride))
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return false; // Non-reducible symbolic expression, bail out.
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for (Value::use_iterator UI = I->use_begin(), E = I->use_end(); UI != E;++UI){
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for (Value::use_iterator UI = I->use_begin(), E = I->use_end(); UI != E;) {
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Instruction *User = cast<Instruction>(*UI);
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// Increment iterator now because IVUseShouldUsePostIncValue may remove
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// User from the list of I users.
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++UI;
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// Do not infinitely recurse on PHI nodes.
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if (isa<PHINode>(User) && Processed.count(User))
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continue;
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