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use continue to avoid nesting, no functionality change.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40819 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-08-04 20:07:06 +00:00
parent fb312c7e44
commit 6c81213b4c
1 changed files with 14 additions and 13 deletions
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27
lib/Transforms/Utils/PromoteMemoryToRegister.cpp
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@ -611,20 +611,21 @@ void PromoteMem2Reg::MarkDominatingPHILive(BasicBlock *BB, unsigned AllocaNum,
BasicBlock *DomBB = IDom->getBlock();
DenseMap<std::pair<BasicBlock*, unsigned>, PHINode*>::iterator
I = NewPhiNodes.find(std::make_pair(DomBB, AllocaNum));
if (I != NewPhiNodes.end()) {
// Ok, we found an inserted PHI node which dominates this value.
PHINode *DominatingPHI = I->second;
if (I == NewPhiNodes.end()) continue;
// Ok, we found an inserted PHI node which dominates this value.
PHINode *DominatingPHI = I->second;
// Find out if we previously thought it was dead. If so, mark it as being
// live by removing it from the DeadPHINodes set.
if (DeadPHINodes.erase(DominatingPHI)) {
// Now that we have marked the PHI node alive, also mark any PHI nodes
// which it might use as being alive as well.
for (pred_iterator PI = pred_begin(DomBB), PE = pred_end(DomBB);
PI != PE; ++PI)
MarkDominatingPHILive(*PI, AllocaNum, DeadPHINodes);
}
}
// Find out if we previously thought it was dead. If so, mark it as being
// live by removing it from the DeadPHINodes set.
if (!DeadPHINodes.erase(DominatingPHI))
continue;
// Now that we have marked the PHI node alive, also mark any PHI nodes
// which it might use as being alive as well.
for (pred_iterator PI = pred_begin(DomBB), PE = pred_end(DomBB);
PI != PE; ++PI)
MarkDominatingPHILive(*PI, AllocaNum, DeadPHINodes);
}
}