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Revert 100158 in case it is causing some of the buildbot problems.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100164 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bob Wilson
2010-04-02 01:22:49 +00:00
parent eb3a1ab796
commit 5ea6352fcd
1 changed files with 21 additions and 29 deletions
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46
lib/Transforms/Utils/SSAUpdater.cpp
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@@ -471,27 +471,22 @@ void SSAUpdater::RecordMatchingPHI(PHINode *PHI) {
SmallVector<PHINode*, 20> WorkList; SmallVector<PHINode*, 20> WorkList;
WorkList.push_back(PHI); WorkList.push_back(PHI);
// Record this PHI.
BasicBlock *BB = PHI->getParent();
AvailableVals[BB] = PHI;
(*BBMap)[BB]->AvailableVal = PHI;
while (!WorkList.empty()) { while (!WorkList.empty()) {
PHI = WorkList.pop_back_val(); PHI = WorkList.pop_back_val();
BasicBlock *BB = PHI->getParent();
BBInfo *Info = (*BBMap)[BB];
if (!Info || Info->AvailableVal)
return;
// Record the PHI.
AvailableVals[BB] = PHI;
Info->AvailableVal = PHI;
// Iterate through the PHI's incoming values. // Iterate through the PHI's incoming values.
for (unsigned i = 0, e = PHI->getNumIncomingValues(); i != e; ++i) { for (unsigned i = 0, e = PHI->getNumIncomingValues(); i != e; ++i) {
PHINode *IncomingPHIVal = dyn_cast<PHINode>(PHI->getIncomingValue(i)); PHINode *IncomingVal = dyn_cast<PHINode>(PHI->getIncomingValue(i));
if (!IncomingPHIVal) continue; if (!IncomingVal) continue;
BB = IncomingPHIVal->getParent(); WorkList.push_back(IncomingVal);
BBInfo *Info = (*BBMap)[BB];
if (!Info || Info->AvailableVal)
continue;
// Record the PHI and add it to the worklist.
AvailableVals[BB] = IncomingPHIVal;
Info->AvailableVal = IncomingPHIVal;
WorkList.push_back(IncomingPHIVal);
} }
} }
} }
@@ -504,24 +499,21 @@ void SSAUpdater::ClearPHITags(PHINode *PHI) {
SmallVector<PHINode*, 20> WorkList; SmallVector<PHINode*, 20> WorkList;
WorkList.push_back(PHI); WorkList.push_back(PHI);
// Clear the tag for this PHI.
(*BBMap)[PHI->getParent()]->PHITag = 0;
while (!WorkList.empty()) { while (!WorkList.empty()) {
PHI = WorkList.pop_back_val(); PHI = WorkList.pop_back_val();
BasicBlock *BB = PHI->getParent();
// Iterate through the PHI's incoming values.
for (unsigned i = 0, e = PHI->getNumIncomingValues(); i != e; ++i) {
PHINode *IncomingPHIVal = dyn_cast<PHINode>(PHI->getIncomingValue(i));
if (!IncomingPHIVal) continue;
BasicBlock *BB = IncomingPHIVal->getParent();
BBInfo *Info = (*BBMap)[BB]; BBInfo *Info = (*BBMap)[BB];
if (!Info || Info->AvailableVal || !Info->PHITag) if (!Info || Info->AvailableVal || !Info->PHITag)
continue; continue;
// Clear the tag and add the PHI to the worklist. // Clear the tag.
Info->PHITag = 0; Info->PHITag = 0;
WorkList.push_back(IncomingPHIVal);
// Iterate through the PHI's incoming values.
for (unsigned i = 0, e = PHI->getNumIncomingValues(); i != e; ++i) {
PHINode *IncomingVal = dyn_cast<PHINode>(PHI->getIncomingValue(i));
if (!IncomingVal) continue;
WorkList.push_back(IncomingVal);
} }
} }
} }