if (!MO.isReg() || !MO.isUse())
continue;
if (!usesRegClass(MO, &ARM::DPRRegClass) &&
- !usesRegClass(MO, &ARM::QPRRegClass))
+ !usesRegClass(MO, &ARM::QPRRegClass) &&
+ !usesRegClass(MO, &ARM::DPairRegClass)) // Treat DPair as QPR
continue;
Defs.push_back(MO.getReg());
InsertPt++;
unsigned Out;
- if (MRI->getRegClass(Reg)->hasSuperClassEq(&ARM::QPRRegClass)) {
+ // DPair has the same length as QPR and also has two DPRs as subreg.
+ // Treat DPair as QPR.
+ if (MRI->getRegClass(Reg)->hasSuperClassEq(&ARM::QPRRegClass) ||
+ MRI->getRegClass(Reg)->hasSuperClassEq(&ARM::DPairRegClass)) {
unsigned DSub0 = createExtractSubreg(MBB, InsertPt, DL, Reg,
ARM::dsub_0, &ARM::DPRRegClass);
unsigned DSub1 = createExtractSubreg(MBB, InsertPt, DL, Reg,
default: llvm_unreachable("Unknown preferred lane!");
}
- bool UsesQPR = usesRegClass(MI->getOperand(0), &ARM::QPRRegClass);
+ // Treat DPair as QPR
+ bool UsesQPR = usesRegClass(MI->getOperand(0), &ARM::QPRRegClass) ||
+ usesRegClass(MI->getOperand(0), &ARM::DPairRegClass);
Out = createImplicitDef(MBB, InsertPt, DL);
Out = createInsertSubreg(MBB, InsertPt, DL, Out, PrefLane, Reg);