if (SrcRC == ARM::tGPRRegisterClass)
SrcRC = ARM::GPRRegisterClass;
- if (DestRC != SrcRC) {
- if (DestRC->getSize() != SrcRC->getSize())
- return false;
+ // Allow DPR / DPR_VFP2 / DPR_8 cross-class copies.
+ if (DestRC == ARM::DPR_8RegisterClass)
+ DestRC = ARM::DPR_VFP2RegisterClass;
+ if (SrcRC == ARM::DPR_8RegisterClass)
+ SrcRC = ARM::DPR_VFP2RegisterClass;
+
+ // Allow QPR / QPR_VFP2 / QPR_8 cross-class copies.
+ if (DestRC == ARM::QPR_VFP2RegisterClass ||
+ DestRC == ARM::QPR_8RegisterClass)
+ DestRC = ARM::QPRRegisterClass;
+ if (SrcRC == ARM::QPR_VFP2RegisterClass ||
+ SrcRC == ARM::QPR_8RegisterClass)
+ SrcRC = ARM::QPRRegisterClass;
+
+ // Disallow copies of unequal sizes.
+ if (DestRC != SrcRC && DestRC->getSize() != SrcRC->getSize())
+ return false;
- // Allow DPR / DPR_VFP2 / DPR_8 cross-class copies.
- // Allow QPR / QPR_VFP2 / QPR_8 cross-class copies.
- if (DestRC->getSize() != 8 && DestRC->getSize() != 16)
+ if (DestRC == ARM::GPRRegisterClass) {
+ if (SrcRC == ARM::SPRRegisterClass)
+ AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VMOVRS), DestReg)
+ .addReg(SrcReg));
+ else
+ AddDefaultCC(AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::MOVr),
+ DestReg).addReg(SrcReg)));
+ } else {
+ unsigned Opc;
+
+ if (DestRC == ARM::SPRRegisterClass)
+ Opc = (SrcRC == ARM::GPRRegisterClass ? ARM::VMOVSR : ARM::VMOVS);
+ else if (DestRC == ARM::DPRRegisterClass)
+ Opc = ARM::VMOVD;
+ else if (DestRC == ARM::DPR_VFP2RegisterClass ||
+ SrcRC == ARM::DPR_VFP2RegisterClass)
+ // Always use neon reg-reg move if source or dest is NEON-only regclass.
+ Opc = ARM::VMOVDneon;
+ else if (DestRC == ARM::QPRRegisterClass)
+ Opc = ARM::VMOVQ;
+ else
return false;
- }
- if (DestRC == ARM::GPRRegisterClass) {
- AddDefaultCC(AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::MOVr),
- DestReg).addReg(SrcReg)));
- } else if (DestRC == ARM::SPRRegisterClass) {
- AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VMOVS), DestReg)
- .addReg(SrcReg));
- } else if (DestRC == ARM::DPRRegisterClass) {
- AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VMOVD), DestReg)
+ AddDefaultPred(BuildMI(MBB, I, DL, get(Opc), DestReg)
.addReg(SrcReg));
- } else if (DestRC == ARM::DPR_VFP2RegisterClass ||
- DestRC == ARM::DPR_8RegisterClass ||
- SrcRC == ARM::DPR_VFP2RegisterClass ||
- SrcRC == ARM::DPR_8RegisterClass) {
- // Always use neon reg-reg move if source or dest is NEON-only regclass.
- AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VMOVDneon),
- DestReg).addReg(SrcReg));
- } else if (DestRC == ARM::QPRRegisterClass ||
- DestRC == ARM::QPR_VFP2RegisterClass ||
- DestRC == ARM::QPR_8RegisterClass) {
- AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VMOVQ),
- DestReg).addReg(SrcReg));
- } else {
- return false;
}
return true;