426   Instruction *MainOp = nullptr;  member
431     return MainOp ? MainOp->getOpcode() : 0;  in getOpcode()
439   bool isAltShuffle() const { return AltOp != MainOp; }  in isAltShuffle()
447   InstructionsState(Value *OpValue, Instruction *MainOp, Instruction *AltOp)  in InstructionsState()
448       : OpValue(OpValue), MainOp(MainOp), AltOp(AltOp) {}  in InstructionsState()
1212             (S.MainOp->getNumOperands() <= 2 || !MainAltOps.empty() ||  in getShallowScore()
1216                      S.MainOp->getNumOperands();  in getShallowScore()
2321     Instruction *MainOp = nullptr;  member
2383     bool isAltShuffle() const { return MainOp != AltOp; }  in isAltShuffle()
2398       return MainOp;  in isOneOf()
2402       MainOp = S.MainOp;  in setOperations()
2407       return MainOp;  in getMainOp()
2416       return MainOp ? MainOp->getOpcode() : 0;  in getOpcode()
2463       if (MainOp)  in dump()
2464         dbgs() << *MainOp << "\n";  in dump()
2561       assert((BundleMember || isa<PHINode>(S.MainOp) ||  in newTreeEntry()
2562               isVectorLikeInstWithConstOps(S.MainOp) ||  in newTreeEntry()
4600       !(S.MainOp && isa<Instruction>(S.MainOp) && S.MainOp == S.AltOp &&  in buildTree_rec()
4602         (match(S.MainOp, m_Load(m_Value())) || all_of(VL, [&S](const Value *I) {  in buildTree_rec()
4606                       cast<Instruction>(S.MainOp)->getOpcode();  in buildTree_rec()
4663     bool IsCommutative = isCommutative(S.MainOp) || isCommutative(S.AltOp);  in buildTree_rec()
4673     for (int Op = 0, E = S.MainOp->getNumOperands(); Op < E; ++Op)  in buildTree_rec()
4679             })) >= S.MainOp->getNumOperands() / 2)  in buildTree_rec()
4681     if (S.MainOp->getNumOperands() > 2)  in buildTree_rec()
4686       for (int Op = 0, E = S.MainOp->getNumOperands(); Op < E; ++Op)  in buildTree_rec()
5791                                    const Instruction *MainOp,  in isAlternateInstruction()  argument
5793   if (auto *CI0 = dyn_cast<CmpInst>(MainOp)) {  in isAlternateInstruction()
5803              (I != MainOp &&  in isAlternateInstruction()