Target/RISCV/RISCVInsertVSETVLI.cpp

392   // If this is a mask reg operation, it only cares about VLMAX.
584   // Check if the VTYPE for these two VSETVLIInfos produce the same VLMAX.
585   // Note that having the same VLMAX ensures that both share the same
614     // If only our VLMAX ratio is valid, then this isn't compatible.
647     // If only the VLMAX is valid, check that it is the same.
678     // Not an exact match, but maybe the AVL and VLMAX are the same. If so,
866         // for the VLMAX instead.  This reduces register pressure slightly.
867         const unsigned VLMAX = computeVLMAX(ST.getRealMaxVLen(), SEW, VLMul);
868         if (ST.getRealMinVLen() == ST.getRealMaxVLen() && VLMAX <= 31)
869           InstrInfo.setAVLImm(VLMAX);
889   // If AVL is defined by a vsetvli with the same VLMAX, we can replace the
921     // VLMAX.
932     // it has the same VLMAX we want and the last VL/VTYPE we observed is the
1053   // it might be defined by a VSET(I)VLI. If it has the same VLMAX we need
1111   // match or allows use of cheaper avl preserving variant if VLMAX doesn't
1112   // change. If VLMAX might change, we couldn't use the 'vsetvli x0, x0, vtype"
1416   // If the AVL value is a register (other than our VLMAX sentinel),