5059   SmallVector<Register> SplitSrcs;  in fewerElementsVectorReductions()  local
5065   extractParts(SrcReg, NarrowTy, NumParts, SplitSrcs, MIRBuilder, MRI);  in fewerElementsVectorReductions()
5079                               {SplitSrcs[Idx], SplitSrcs[Idx + 1]})  in fewerElementsVectorReductions()
5082         SplitSrcs = PartialResults;  in fewerElementsVectorReductions()
5084         NumPartsLeft = SplitSrcs.size();  in fewerElementsVectorReductions()
5086       assert(SplitSrcs.size() == 1);  in fewerElementsVectorReductions()
5087       MIRBuilder.buildCopy(DstReg, SplitSrcs[0]);  in fewerElementsVectorReductions()
5092     Register Acc = SplitSrcs[0];  in fewerElementsVectorReductions()
5094       Acc = MIRBuilder.buildInstr(ScalarOpc, {NarrowTy}, {Acc, SplitSrcs[Idx]})  in fewerElementsVectorReductions()
5103         MIRBuilder.buildInstr(RdxMI.getOpcode(), {DstTy}, {SplitSrcs[Part]})  in fewerElementsVectorReductions()
5146   SmallVector<Register> SplitSrcs;  in fewerElementsVectorSeqReductions()  local
5148   extractParts(SrcReg, NarrowTy, NumParts, SplitSrcs, MIRBuilder, MRI);  in fewerElementsVectorSeqReductions()
5151     Acc = MIRBuilder.buildInstr(ScalarOpc, {NarrowTy}, {Acc, SplitSrcs[i]})  in fewerElementsVectorSeqReductions()
5163   SmallVector<Register> SplitSrcs;  in tryNarrowPow2Reduction()  local
5166                SrcTy.getNumElements() / NarrowTy.getNumElements(), SplitSrcs,  in tryNarrowPow2Reduction()
5170   while (SplitSrcs.size() > 1) {  in tryNarrowPow2Reduction()
5172     for (unsigned Idx = 0; Idx < SplitSrcs.size()-1; Idx += 2) {  in tryNarrowPow2Reduction()
5173       Register LHS = SplitSrcs[Idx];  in tryNarrowPow2Reduction()
5174       Register RHS = SplitSrcs[Idx + 1];  in tryNarrowPow2Reduction()
5180     SplitSrcs = std::move(PartialRdxs);  in tryNarrowPow2Reduction()
5184   MI.getOperand(1).setReg(SplitSrcs[0]);  in tryNarrowPow2Reduction()
6770     SmallVector<Register, 2> SplitSrcs;  in lowerTRUNC()  local
6771     extractParts(SrcReg, SplitSrcTy, 2, SplitSrcs, MIRBuilder, MRI);  in lowerTRUNC()
6779     for (unsigned I = 0; I < SplitSrcs.size(); ++I) {  in lowerTRUNC()
6780       SplitSrcs[I] = MIRBuilder.buildTrunc(InterTy, SplitSrcs[I]).getReg(0);  in lowerTRUNC()
6785         DstTy.changeElementSize(InterTy.getScalarSizeInBits()), SplitSrcs);  in lowerTRUNC()