176     Candidate *Basis = nullptr;  member
184   bool isBasisFor(const Candidate &Basis, const Candidate &C);
229   void rewriteCandidateWithBasis(const Candidate &C, const Candidate &Basis);
241   static Value *emitBump(const Candidate &Basis, const Candidate &C,
273 bool StraightLineStrengthReduce::isBasisFor(const Candidate &Basis,  in isBasisFor()  argument
275   return (Basis.Ins != C.Ins && // skip the same instruction  in isBasisFor()
278           Basis.Ins->getType() == C.Ins->getType() &&  in isBasisFor()
280           DT->dominates(Basis.Ins->getParent(), C.Ins->getParent()) &&  in isBasisFor()
282           Basis.Base == C.Base && Basis.Stride == C.Stride &&  in isBasisFor()
283           Basis.CandidateKind == C.CandidateKind);  in isBasisFor()
369     for (auto Basis = Candidates.rbegin();  in allocateCandidatesAndFindBasis()  local
370          Basis != Candidates.rend() && NumIterations < MaxNumIterations;  in allocateCandidatesAndFindBasis()
371          ++Basis, ++NumIterations) {  in allocateCandidatesAndFindBasis()
372       if (isBasisFor(*Basis, C)) {  in allocateCandidatesAndFindBasis()
373         C.Basis = &(*Basis);  in allocateCandidatesAndFindBasis()
582 Value *StraightLineStrengthReduce::emitBump(const Candidate &Basis,  in emitBump()  argument
587   APInt Idx = C.Index->getValue(), BasisIdx = Basis.Index->getValue();  in emitBump()
592   if (Basis.CandidateKind == Candidate::GEP) {  in emitBump()
596             cast<GetElementPtrInst>(Basis.Ins)->getResultElementType()));  in emitBump()
616       IntegerType::get(Basis.Ins->getContext(), IndexOffset.getBitWidth());  in emitBump()
634     const Candidate &C, const Candidate &Basis) {  in rewriteCandidateWithBasis()  argument
635   assert(C.CandidateKind == Basis.CandidateKind && C.Base == Basis.Base &&  in rewriteCandidateWithBasis()
636          C.Stride == Basis.Stride);  in rewriteCandidateWithBasis()
639   assert(Basis.Ins->getParent() != nullptr && "the basis is unlinked");  in rewriteCandidateWithBasis()
650   Value *Bump = emitBump(Basis, C, Builder, DL, BumpWithUglyGEP);  in rewriteCandidateWithBasis()
659       Reduced = Builder.CreateSub(Basis.Ins, NegBump);  in rewriteCandidateWithBasis()
673       Reduced = Builder.CreateAdd(Basis.Ins, Bump);  in rewriteCandidateWithBasis()
683         unsigned AS = Basis.Ins->getType()->getPointerAddressSpace();  in rewriteCandidateWithBasis()
684         Type *CharTy = Type::getInt8PtrTy(Basis.Ins->getContext(), AS);  in rewriteCandidateWithBasis()
685         Reduced = Builder.CreateBitCast(Basis.Ins, CharTy);  in rewriteCandidateWithBasis()
698               cast<GetElementPtrInst>(Basis.Ins)->getResultElementType(),  in rewriteCandidateWithBasis()
699               Basis.Ins, Bump);  in rewriteCandidateWithBasis()
702               cast<GetElementPtrInst>(Basis.Ins)->getResultElementType(),  in rewriteCandidateWithBasis()
703               Basis.Ins, Bump);  in rewriteCandidateWithBasis()
739     if (C.Basis != nullptr) {  in runOnFunction()
740       rewriteCandidateWithBasis(C, *C.Basis);  in runOnFunction()