- for (unsigned SI = 0; SI < Pairs; ++SI) {
- Pair[SI].Loops.resize(MaxLevels + 1);
- Pair[SI].GroupLoops.resize(MaxLevels + 1);
- Pair[SI].Group.resize(Pairs);
- }
- Pairs = 0;
- for (GEPOperator::const_op_iterator SrcIdx = SrcGEP->idx_begin(),
- SrcEnd = SrcGEP->idx_end(),
- DstIdx = DstGEP->idx_begin(),
- DstEnd = DstGEP->idx_end();
- SrcIdx != SrcEnd && DstIdx != DstEnd;
- ++SrcIdx, ++DstIdx, ++Pairs) {
- Pair[Pairs].Src = SE->getSCEV(*SrcIdx);
- Pair[Pairs].Dst = SE->getSCEV(*DstIdx);
- removeMatchingExtensions(&Pair[Pairs]);
- Pair[Pairs].Classification =
- classifyPair(Pair[Pairs].Src, LI->getLoopFor(Src->getParent()),
- Pair[Pairs].Dst, LI->getLoopFor(Dst->getParent()),
- Pair[Pairs].Loops);
- Pair[Pairs].GroupLoops = Pair[Pairs].Loops;
- Pair[Pairs].Group.set(Pairs);
- DEBUG(dbgs() << " subscript " << Pairs << "\n");
- DEBUG(dbgs() << "\tsrc = " << *Pair[Pairs].Src << "\n");
- DEBUG(dbgs() << "\tdst = " << *Pair[Pairs].Dst << "\n");
- DEBUG(dbgs() << "\tclass = " << Pair[Pairs].Classification << "\n");
+ if (UsefulGEP) {
+ DEBUG(dbgs() << " using GEPs\n");
+ unsigned P = 0;
+ for (GEPOperator::const_op_iterator SrcIdx = SrcGEP->idx_begin(),
+ SrcEnd = SrcGEP->idx_end(),
+ DstIdx = DstGEP->idx_begin();
+ SrcIdx != SrcEnd;
+ ++SrcIdx, ++DstIdx, ++P) {
+ Pair[P].Src = SE->getSCEV(*SrcIdx);
+ Pair[P].Dst = SE->getSCEV(*DstIdx);
+ }
+ }
+ else {
+ DEBUG(dbgs() << " ignoring GEPs\n");
+ const SCEV *SrcSCEV = SE->getSCEV(SrcPtr);
+ const SCEV *DstSCEV = SE->getSCEV(DstPtr);
+ DEBUG(dbgs() << " SrcSCEV = " << *SrcSCEV << "\n");
+ DEBUG(dbgs() << " DstSCEV = " << *DstSCEV << "\n");
+ Pair[0].Src = SrcSCEV;
+ Pair[0].Dst = DstSCEV;
+ }
+
+ for (unsigned P = 0; P < Pairs; ++P) {
+ Pair[P].Loops.resize(MaxLevels + 1);
+ Pair[P].GroupLoops.resize(MaxLevels + 1);
+ Pair[P].Group.resize(Pairs);
+ removeMatchingExtensions(&Pair[P]);
+ Pair[P].Classification =
+ classifyPair(Pair[P].Src, LI->getLoopFor(Src->getParent()),
+ Pair[P].Dst, LI->getLoopFor(Dst->getParent()),
+ Pair[P].Loops);
+ Pair[P].GroupLoops = Pair[P].Loops;
+ Pair[P].Group.set(P);
+ DEBUG(dbgs() << " subscript " << P << "\n");
+ DEBUG(dbgs() << "\tsrc = " << *Pair[P].Src << "\n");
+ DEBUG(dbgs() << "\tdst = " << *Pair[P].Dst << "\n");
+ DEBUG(dbgs() << "\tclass = " << Pair[P].Classification << "\n");