Target/AArch64/AArch64MIPeepholeOpt.cpp

204             T &Imm1) -> std::optional<OpcodePair> {
205         if (splitBitmaskImm(Imm, RegSize, Imm0, Imm1))
210                    unsigned Imm1, Register SrcReg, Register NewTmpReg,
219             .addImm(Imm1);
330 static bool splitAddSubImm(T Imm, unsigned RegSize, T &Imm0, T &Imm1) {
343   // Split Imm into (Imm0 << 12) + Imm1;
345   Imm1 = Imm & 0xfff;
375                        T &Imm1) -> std::optional<OpcodePair> {
376         if (splitAddSubImm(Imm, RegSize, Imm0, Imm1))
378         if (splitAddSubImm(-Imm, RegSize, Imm0, Imm1))
383                    unsigned Imm1, Register SrcReg, Register NewTmpReg,
393             .addImm(Imm1)
412                    T &Imm1) -> std::optional<OpcodePair> {
414         if (splitAddSubImm(Imm, RegSize, Imm0, Imm1))
416         else if (splitAddSubImm(-Imm, RegSize, Imm0, Imm1))
429                    unsigned Imm1, Register SrcReg, Register NewTmpReg,
439             .addImm(Imm1)
497   // Split the immediate to Imm0 and Imm1, and calculate the Opcode.
498   T Imm = static_cast<T>(MovMI->getOperand(1).getImm()), Imm0, Imm1;
506   if (auto R = SplitAndOpc(Imm, RegSize, Imm0, Imm1))
514   // NewDstReg = Opcode.second NewTmpReg Imm1
548   BuildInstr(MI, Opcode, Imm0, Imm1, SrcReg, NewTmpReg, NewDstReg);