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llvm-svn: 30251
This commit is contained in:
Nick Lewycky 2006-09-11 17:23:34 +00:00
parent 5c3bdbad9b
commit e94f42a740
1 changed files with 22 additions and 20 deletions
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42
llvm/lib/Transforms/Scalar/PredicateSimplifier.cpp
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@ -501,30 +501,32 @@ Value *PredicateSimplifier::resolve(SetCondInst *SCI,
Value *SCI0 = resolve(SCI->getOperand(0), KP),
*SCI1 = resolve(SCI->getOperand(1), KP);
PropertySet::ConstPropertyIterator NE =
KP.findProperty(PropertySet::NE, SCI0, SCI1);
if (NE != KP.Properties.end()) {
switch (SCI->getOpcode()) {
case Instruction::SetEQ:
return ConstantBool::False;
case Instruction::SetNE:
return ConstantBool::True;
case Instruction::SetLE:
case Instruction::SetGE:
case Instruction::SetLT:
case Instruction::SetGT:
break;
default:
assert(0 && "Unknown opcode in SetCondInst.");
break;
}
}
ConstantIntegral *CI1 = dyn_cast<ConstantIntegral>(SCI0),
*CI2 = dyn_cast<ConstantIntegral>(SCI1);
if (!CI1 || !CI2) return SCI;
if (!CI1 || !CI2) {
PropertySet::ConstPropertyIterator NE =
KP.findProperty(PropertySet::NE, SCI0, SCI1);
if (NE != KP.Properties.end()) {
switch (SCI->getOpcode()) {
case Instruction::SetEQ:
return ConstantBool::False;
case Instruction::SetNE:
return ConstantBool::True;
case Instruction::SetLE:
case Instruction::SetGE:
case Instruction::SetLT:
case Instruction::SetGT:
break;
default:
assert(0 && "Unknown opcode in SetCondInst.");
break;
}
}
return SCI;
}
switch(SCI->getOpcode()) {
case Instruction::SetLE: