maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

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
llvm/lib/Analysis
InductionVariable.cpp

11
llvm/lib/Analysis/InductionVariable.cpp
View File

@ -69,6 +69,10 @@ InductionVariable::InductionVariable(PHINode *P, cfg::LoopInfo *LoopInfo) {
// //
if (Phi->getNumIncomingValues() != 2) return; 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 // If we have loop information, make sure that this PHI node is in the header
// of a loop... // of a loop...
// //
@ -140,11 +144,10 @@ InductionVariable::InductionVariable(PHINode *P, cfg::LoopInfo *LoopInfo) {
Step = (Value*)StepE.Offset; Step = (Value*)StepE.Offset;
else else
Step = Constant::getNullConstant(Step->getType()); 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));
} }
} }