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Preserve both isPHIDef and isDefByCopy bits when copying parent values. 

llvm-svn: 127697
This commit is contained in:
Jakob Stoklund Olesen 2011-03-15 21:13:22 +00:00
parent 920139ca08
commit 32210de3e4
1 changed files with 4 additions and 5 deletions
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9
llvm/lib/CodeGen/SplitKit.cpp
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@ -274,10 +274,6 @@ VNInfo *SplitEditor::defValue(unsigned RegIdx,
// Create a new value.
VNInfo *VNI = LI->getNextValue(Idx, 0, LIS.getVNInfoAllocator());
// Preserve the PHIDef bit.
if (ParentVNI->isPHIDef() && Idx == ParentVNI->def)
VNI->setIsPHIDef(true);
// Use insert for lookup, so we can add missing values with a second lookup.
std::pair<ValueMap::iterator, bool> InsP =
Values.insert(std::make_pair(std::make_pair(RegIdx, ParentVNI->id), VNI));
@ -845,7 +841,10 @@ void SplitEditor::finish() {
if (ParentVNI->isUnused())
continue;
unsigned RegIdx = RegAssign.lookup(ParentVNI->def);
defValue(RegIdx, ParentVNI, ParentVNI->def);
VNInfo *VNI = defValue(RegIdx, ParentVNI, ParentVNI->def);
VNI->setIsPHIDef(ParentVNI->isPHIDef());
VNI->setCopy(ParentVNI->getCopy());
// Mark rematted values as complex everywhere to force liveness computation.
// The new live ranges may be truncated.
if (Edit->didRematerialize(ParentVNI))