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LoopVectorize: Use IRBuilder interface in more places

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No functionality change intended.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181665 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Arnold Schwaighofer 2013-05-11 23:04:24 +00:00
parent 13b11cd810
commit 8112d22701
1 changed files with 13 additions and 25 deletions
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38
lib/Transforms/Vectorize/LoopVectorize.cpp
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@ -1361,6 +1361,8 @@ InnerLoopVectorizer::createEmptyLoop(LoopVectorizationLegality *Legal) {
PHINode *ResumeIndex = 0;
LoopVectorizationLegality::InductionList::iterator I, E;
LoopVectorizationLegality::InductionList *List = Legal->getInductionVars();
// Set builder to point to last bypass block.
BypassBuilder.SetInsertPoint(LoopBypassBlocks.back()->getTerminator());
for (I = List->begin(), E = List->end(); I != E; ++I) {
PHINode *OrigPhi = I->first;
LoopVectorizationLegality::InductionInfo II = I->second;
@ -1382,42 +1384,28 @@ InnerLoopVectorizer::createEmptyLoop(LoopVectorizationLegality *Legal) {
}
case LoopVectorizationLegality::IK_ReverseIntInduction: {
// Convert the CountRoundDown variable to the PHI size.
unsigned CRDSize = CountRoundDown->getType()->getScalarSizeInBits();
unsigned IISize = II.StartValue->getType()->getScalarSizeInBits();
Value *CRD = CountRoundDown;
if (CRDSize > IISize)
CRD = CastInst::Create(Instruction::Trunc, CountRoundDown,
II.StartValue->getType(), "tr.crd",
LoopBypassBlocks.back()->getTerminator());
else if (CRDSize < IISize)
CRD = CastInst::Create(Instruction::SExt, CountRoundDown,
II.StartValue->getType(),
"sext.crd",
LoopBypassBlocks.back()->getTerminator());
// Handle reverse integer induction counter:
EndValue =
BinaryOperator::CreateSub(II.StartValue, CRD, "rev.ind.end",
LoopBypassBlocks.back()->getTerminator());
Value *CRD = BypassBuilder.CreateSExtOrTrunc(CountRoundDown,
II.StartValue->getType(),
"cast.crd");
// Handle reverse integer induction counter.
EndValue = BypassBuilder.CreateSub(II.StartValue, CRD, "rev.ind.end");
break;
}
case LoopVectorizationLegality::IK_PtrInduction: {
// For pointer induction variables, calculate the offset using
// the end index.
EndValue =
GetElementPtrInst::Create(II.StartValue, CountRoundDown, "ptr.ind.end",
LoopBypassBlocks.back()->getTerminator());
EndValue = BypassBuilder.CreateGEP(II.StartValue, CountRoundDown,
"ptr.ind.end");
break;
}
case LoopVectorizationLegality::IK_ReversePtrInduction: {
// The value at the end of the loop for the reverse pointer is calculated
// by creating a GEP with a negative index starting from the start value.
Value *Zero = ConstantInt::get(CountRoundDown->getType(), 0);
Value *NegIdx = BinaryOperator::CreateSub(Zero, CountRoundDown,
"rev.ind.end",
LoopBypassBlocks.back()->getTerminator());
EndValue = GetElementPtrInst::Create(II.StartValue, NegIdx,
"rev.ptr.ind.end",
LoopBypassBlocks.back()->getTerminator());
Value *NegIdx = BypassBuilder.CreateSub(Zero, CountRoundDown,
"rev.ind.end");
EndValue = BypassBuilder.CreateGEP(II.StartValue, NegIdx,
"rev.ptr.ind.end");
break;
}
}// end of case