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Do not apply the transformation if the target does not support DestTy natively.

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llvm-svn: 55433
This commit is contained in:
Devang Patel 2008-08-27 20:55:23 +00:00
parent c4040a69b7
commit 7abe1944ae
1 changed files with 9 additions and 2 deletions
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11
lib/Transforms/Scalar/LoopStrengthReduce.cpp
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@ -1735,8 +1735,15 @@ void LoopStrengthReduce::OptimizeShadowIV(Loop *L) {
DestTy = UCast->getDestTy();
else if (SIToFPInst *SCast = dyn_cast<SIToFPInst>(CandidateUI->User))
DestTy = SCast->getDestTy();
if (!DestTy) continue;
if (!DestTy) continue;
if (TLI) {
/* If target does not support DestTy natively then do not apply
this transformation. */
MVT DVT = TLI->getValueType(DestTy);
if (!TLI->isTypeLegal(DVT)) continue;
}
PHINode *PH = dyn_cast<PHINode>(ShadowUse->getOperand(0));
if (!PH) continue;
if (PH->getNumIncomingValues() != 2) continue;