Use new TargetLowering addressing modes hooks.
llvm-svn: 35072
This commit is contained in:
parent
6486974e8d
commit
720acdfb31
|
@ -612,12 +612,12 @@ void BasedUser::RewriteInstructionToUseNewBase(const SCEVHandle &NewBase,
|
||||||
/// immediate field of a target instruction.
|
/// immediate field of a target instruction.
|
||||||
static bool isTargetConstant(const SCEVHandle &V, const TargetLowering *TLI) {
|
static bool isTargetConstant(const SCEVHandle &V, const TargetLowering *TLI) {
|
||||||
if (SCEVConstant *SC = dyn_cast<SCEVConstant>(V)) {
|
if (SCEVConstant *SC = dyn_cast<SCEVConstant>(V)) {
|
||||||
int64_t V = SC->getValue()->getSExtValue();
|
int64_t VC = SC->getValue()->getSExtValue();
|
||||||
if (TLI)
|
if (TLI)
|
||||||
return TLI->isLegalAddressImmediate(V);
|
return TLI->isLegalAddressImmediate(VC, V->getType());
|
||||||
else
|
else
|
||||||
// Defaults to PPC. PPC allows a sign-extended 16-bit immediate field.
|
// Defaults to PPC. PPC allows a sign-extended 16-bit immediate field.
|
||||||
return (V > -(1 << 16) && V < (1 << 16)-1);
|
return (VC > -(1 << 16) && VC < (1 << 16)-1);
|
||||||
}
|
}
|
||||||
|
|
||||||
if (SCEVUnknown *SU = dyn_cast<SCEVUnknown>(V))
|
if (SCEVUnknown *SU = dyn_cast<SCEVUnknown>(V))
|
||||||
|
@ -878,24 +878,22 @@ unsigned LoopStrengthReduce::CheckForIVReuse(const SCEVHandle &Stride,
|
||||||
int64_t SInt = SC->getValue()->getSExtValue();
|
int64_t SInt = SC->getValue()->getSExtValue();
|
||||||
if (SInt == 1) return 0;
|
if (SInt == 1) return 0;
|
||||||
|
|
||||||
for (TargetLowering::legal_am_scale_iterator
|
for (std::map<SCEVHandle, IVsOfOneStride>::iterator SI= IVsByStride.begin(),
|
||||||
I = TLI->legal_am_scale_begin(), E = TLI->legal_am_scale_end();
|
SE = IVsByStride.end(); SI != SE; ++SI) {
|
||||||
I != E; ++I) {
|
int64_t SSInt = cast<SCEVConstant>(SI->first)->getValue()->getSExtValue();
|
||||||
unsigned Scale = *I;
|
if (unsigned(abs(SInt)) < SSInt || (SInt % SSInt) != 0)
|
||||||
if (unsigned(abs(SInt)) < Scale || (SInt % Scale) != 0)
|
|
||||||
continue;
|
continue;
|
||||||
std::map<SCEVHandle, IVsOfOneStride>::iterator SI =
|
int64_t Scale = SInt / SSInt;
|
||||||
IVsByStride.find(SCEVUnknown::getIntegerSCEV(SInt/Scale, UIntPtrTy));
|
if (TLI->isLegalAddressScale(Scale, Ty)) {
|
||||||
if (SI == IVsByStride.end())
|
for (std::vector<IVExpr>::iterator II = SI->second.IVs.begin(),
|
||||||
continue;
|
IE = SI->second.IVs.end(); II != IE; ++II)
|
||||||
for (std::vector<IVExpr>::iterator II = SI->second.IVs.begin(),
|
// FIXME: Only handle base == 0 for now.
|
||||||
IE = SI->second.IVs.end(); II != IE; ++II)
|
// Only reuse previous IV if it would not require a type conversion.
|
||||||
// FIXME: Only handle base == 0 for now.
|
if (isZero(II->Base) && II->Base->getType() == Ty) {
|
||||||
// Only reuse previous IV if it would not require a type conversion.
|
IV = *II;
|
||||||
if (isZero(II->Base) && II->Base->getType() == Ty) {
|
return Scale;
|
||||||
IV = *II;
|
}
|
||||||
return Scale;
|
}
|
||||||
}
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
Loading…
Reference in New Issue