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Fix inferred casts.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32180 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2006-12-04 17:05:42 +00:00
parent 10292555f3
commit 14bab5db2d
1 changed files with 9 additions and 6 deletions

15
lib/Analysis/ScalarEvolution.cpp

@ -178,7 +178,8 @@ SCEVHandle SCEVConstant::get(ConstantInt *V) {
// Make sure that SCEVConstant instances are all unsigned.
if (V->getType()->isSigned()) {
const Type *NewTy = V->getType()->getUnsignedVersion();
V = cast<ConstantInt>(ConstantExpr::getCast(V, NewTy));
V = cast<ConstantInt>(
ConstantExpr::getInferredCast(V, false, NewTy, false));
}
SCEVConstant *&R = (*SCEVConstants)[V];
@ -465,7 +466,7 @@ SCEVHandle SCEVUnknown::getIntegerSCEV(int Val, const Type *Ty) {
C = ConstantInt::get(Ty, Val);
else {
C = ConstantInt::get(Ty->getSignedVersion(), Val);
C = ConstantExpr::getCast(C, Ty);
C = ConstantExpr::getInferredCast(C, true, Ty, false);
}
return SCEVUnknown::get(C);
}
@ -511,7 +512,8 @@ static SCEVHandle PartialFact(SCEVHandle V, unsigned NumSteps) {
for (; NumSteps; --NumSteps)
Result *= Val-(NumSteps-1);
Constant *Res = ConstantInt::get(Type::ULongTy, Result);
return SCEVUnknown::get(ConstantExpr::getCast(Res, V->getType()));
return SCEVUnknown::get(
ConstantExpr::getInferredCast(Res, false, V->getType(), true));
}
const Type *Ty = V->getType();
@ -996,10 +998,11 @@ SCEVHandle SCEVSDivExpr::get(const SCEVHandle &LHS, const SCEVHandle &RHS) {
Constant *LHSCV = LHSC->getValue();
Constant *RHSCV = RHSC->getValue();
if (LHSCV->getType()->isUnsigned())
LHSCV = ConstantExpr::getCast(LHSCV,
LHSCV->getType()->getSignedVersion());
LHSCV = ConstantExpr::getInferredCast(
LHSCV, false, LHSCV->getType()->getSignedVersion(), true);
if (RHSCV->getType()->isUnsigned())
RHSCV = ConstantExpr::getCast(RHSCV, LHSCV->getType());
RHSCV = ConstantExpr::getInferredCast(
RHSCV, false, LHSCV->getType(), true);
return SCEVUnknown::get(ConstantExpr::getSDiv(LHSCV, RHSCV));
}
}