10324                                Optional<unsigned> FirstMaskArgument,  in allocateRVVReg()  argument
10331     if (FirstMaskArgument && ValNo == *FirstMaskArgument)  in allocateRVVReg()
10349                      Optional<unsigned> FirstMaskArgument) {  in CC_RISCV()  argument
10493     Reg = allocateRVVReg(ValVT, ValNo, FirstMaskArgument, State, TLI);  in CC_RISCV()
10578   Optional<unsigned> FirstMaskArgument;  in analyzeInputArgs()  local
10580     FirstMaskArgument = preAssignMask(Ins);  in analyzeInputArgs()
10595            FirstMaskArgument)) {  in analyzeInputArgs()
10609   Optional<unsigned> FirstMaskArgument;  in analyzeOutputArgs()  local
10611     FirstMaskArgument = preAssignMask(Outs);  in analyzeOutputArgs()
10621            FirstMaskArgument)) {  in analyzeOutputArgs()
10779                             Optional<unsigned> FirstMaskArgument) {  in CC_RISCV_FastCC()  argument
10844             allocateRVVReg(ValVT, ValNo, FirstMaskArgument, State, TLI)) {  in CC_RISCV_FastCC()
11461   Optional<unsigned> FirstMaskArgument;  in CanLowerReturn()  local
11463     FirstMaskArgument = preAssignMask(Outs);  in CanLowerReturn()
11471                  *this, FirstMaskArgument))  in CanLowerReturn()