- MachineInstrBuilder MIB = BuildMI(*I->getParent(), InsertionPoint,
- I->getDebugLoc(), TII->get(NewOpc))
- .addOperand(getLdStRegOp(RtMI))
- .addOperand(getLdStRegOp(Rt2MI))
- .addOperand(BaseRegOp)
- .addImm(OffsetImm);
+ MachineInstrBuilder MIB;
+ if (isNarrowStore(Opc)) {
+ // Change the scaled offset from small to large type.
+ if (!IsUnscaled) {
+ assert(((OffsetImm & 1) == 0) && "Unexpected offset to merge");
+ OffsetImm /= 2;
+ }
+ MIB = BuildMI(*I->getParent(), InsertionPoint, I->getDebugLoc(),
+ TII->get(NewOpc))
+ .addOperand(getLdStRegOp(I))
+ .addOperand(BaseRegOp)
+ .addImm(OffsetImm);
+ // Copy MachineMemOperands from the original stores.
+ concatenateMemOperands(MIB, I, Paired);
+ } else {
+ // Handle Unscaled
+ if (IsUnscaled)
+ OffsetImm /= OffsetStride;
+ MIB = BuildMI(*I->getParent(), InsertionPoint, I->getDebugLoc(),
+ TII->get(NewOpc))
+ .addOperand(getLdStRegOp(RtMI))
+ .addOperand(getLdStRegOp(Rt2MI))
+ .addOperand(BaseRegOp)
+ .addImm(OffsetImm);
+ }
+