Ctx));
}
-// If target is Mips1, expand double precision load/store to two single
-// precision loads/stores.
-//
-// ldc1 $f0, lo($CPI0_0)($5) gets expanded to the following two instructions:
-// (little endian)
-// lwc1 $f0, lo($CPI0_0)($5) and
-// lwc1 $f1, lo($CPI0_0+4)($5)
-// (big endian)
-// lwc1 $f1, lo($CPI0_0)($5) and
-// lwc1 $f0, lo($CPI0_0+4)($5)
-void MipsMCInstLower::LowerMips1F64LoadStore(const MachineInstr *MI,
- unsigned Opc,
- SmallVector<MCInst, 4>& MCInsts,
- bool isLittle,
- const unsigned *SubReg) const {
- MCInst InstLo, InstHi, DelaySlot;
- unsigned SingleOpc = (Opc == Mips::LDC1 ? Mips::LWC1 : Mips::SWC1);
- unsigned RegLo = isLittle ? *SubReg : *(SubReg + 1);
- unsigned RegHi = isLittle ? *(SubReg + 1) : *SubReg;
- const MachineOperand &MO1 = MI->getOperand(1);
- const MachineOperand &MO2 = MI->getOperand(2);
-
- InstLo.setOpcode(SingleOpc);
- InstLo.addOperand(MCOperand::CreateReg(RegLo));
- InstLo.addOperand(LowerOperand(MO1));
- InstLo.addOperand(LowerOperand(MO2));
- MCInsts.push_back(InstLo);
-
- InstHi.setOpcode(SingleOpc);
- InstHi.addOperand(MCOperand::CreateReg(RegHi));
- InstHi.addOperand(LowerOperand(MO1));
- if (MO2.isImm())// The offset of addr operand is an immediate: e.g. 0($sp)
- InstHi.addOperand(MCOperand::CreateImm(MO2.getImm() + 4));
- else// Otherwise, the offset must be a symbol: e.g. lo($CPI0_0)($5)
- InstHi.addOperand(LowerSymbolOperand(MO2, MO2.getType(), 4));
- MCInsts.push_back(InstHi);
-
- // Need to insert a NOP in LWC1's delay slot.
- if (SingleOpc == Mips::LWC1) {
- DelaySlot.setOpcode(Mips::NOP);
- MCInsts.push_back(DelaySlot);
- }
-}
-
MCOperand MipsMCInstLower::LowerOperand(const MachineOperand& MO) const {
MachineOperandType MOTy = MO.getType();