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Fix a bug that clobbered the step value on some inputs 

llvm-svn: 1416
This commit is contained in:
Chris Lattner 2001-12-05 06:32:30 +00:00
parent 25b151dfdf
commit 1bedac9af0
1 changed files with 7 additions and 4 deletions
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11
llvm/lib/Analysis/InductionVariable.cpp
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@ -69,6 +69,10 @@ InductionVariable::InductionVariable(PHINode *P, cfg::LoopInfo *LoopInfo) {
//
if (Phi->getNumIncomingValues() != 2) return;
// FIXME: Handle FP induction variables.
if (Phi->getType() == Type::FloatTy || Phi->getType() == Type::DoubleTy)
return;
// If we have loop information, make sure that this PHI node is in the header
// of a loop...
//
@ -140,11 +144,10 @@ InductionVariable::InductionVariable(PHINode *P, cfg::LoopInfo *LoopInfo) {
Step = (Value*)StepE.Offset;
else
Step = Constant::getNullConstant(Step->getType());
const Type *ETy = Phi->getType();
if (ETy->isPointerType()) ETy = Type::ULongTy;
Step = (Value*)(StepE.Offset ? StepE.Offset : ConstantInt::get(ETy,0));
}
const Type *ETy = Phi->getType();
if (ETy->isPointerType()) ETy = Type::ULongTy;
Step = (Value*)(StepE.Offset ? StepE.Offset : ConstantInt::get(ETy, 0));
}
}