// of inputs.
if (MO.isEarlyClobber())
defIndex = MIIdx.getUseIndex();
+
+ // Make sure the first definition is not a partial redefinition. Add an
+ // <imp-def> of the full register.
+ if (MO.getSubReg())
+ mi->addRegisterDefined(interval.reg);
+
MachineInstr *CopyMI = NULL;
unsigned SrcReg, DstReg, SrcSubReg, DstSubReg;
if (mi->isExtractSubreg() || mi->isInsertSubreg() || mi->isSubregToReg() ||
} else {
if (MultipleDefsBySameMI(*mi, MOIdx))
- // Mutple defs of the same virtual register by the same instruction. e.g.
- // %reg1031:5<def>, %reg1031:6<def> = VLD1q16 %reg1024<kill>, ...
+ // Multiple defs of the same virtual register by the same instruction.
+ // e.g. %reg1031:5<def>, %reg1031:6<def> = VLD1q16 %reg1024<kill>, ...
// This is likely due to elimination of REG_SEQUENCE instructions. Return
// here since there is nothing to do.
return;
end = baseIndex.getDefIndex();
goto exit;
} else {
- int DefIdx = mi->findRegisterDefOperandIdx(interval.reg, false, tri_);
+ int DefIdx = mi->findRegisterDefOperandIdx(interval.reg,false,false,tri_);
if (DefIdx != -1) {
if (mi->isRegTiedToUseOperand(DefIdx)) {
// Two-address instruction.
for (const unsigned* AS = tri_->getSubRegisters(MO.getReg()); *AS; ++AS)
// If MI also modifies the sub-register explicitly, avoid processing it
// more than once. Do not pass in TRI here so it checks for exact match.
- if (!MI->modifiesRegister(*AS))
+ if (!MI->definesRegister(*AS))
handlePhysicalRegisterDef(MBB, MI, MIIdx, MO,
getOrCreateInterval(*AS), 0);
}
end = baseIndex.getDefIndex();
SeenDefUse = true;
break;
- } else if (mi->modifiesRegister(interval.reg, tri_)) {
+ } else if (mi->definesRegister(interval.reg, tri_)) {
// Another instruction redefines the register before it is ever read.
// Then the register is essentially dead at the instruction that defines
// it. Hence its interval is:
MI->eraseFromParent();
continue;
}
- assert(!O.isImplicit() && "Spilling register that's used as implicit use?");
+ assert(!(O.isImplicit() && O.isUse()) &&
+ "Spilling register that's used as implicit use?");
SlotIndex index = getInstructionIndex(MI);
if (index < start || index >= end)
continue;