/// FIXME: Move to SelectionDAG?
static EVT getPhysicalRegisterVT(SDNode *N, unsigned Reg,
const TargetInstrInfo *TII) {
- const MCInstrDesc &MCID = TII->get(N->getMachineOpcode());
- assert(MCID.ImplicitDefs && "Physical reg def must be in implicit def list!");
- unsigned NumRes = MCID.getNumDefs();
- for (const uint16_t *ImpDef = MCID.getImplicitDefs(); *ImpDef; ++ImpDef) {
- if (Reg == *ImpDef)
- break;
- ++NumRes;
+ unsigned NumRes;
+ if (N->getOpcode() == ISD::CopyFromReg) {
+ // CopyFromReg has: "chain, Val, glue" so operand 1 gives the type.
+ NumRes = 1;
+ } else {
+ const MCInstrDesc &MCID = TII->get(N->getMachineOpcode());
+ assert(MCID.ImplicitDefs && "Physical reg def must be in implicit def list!");
+ NumRes = MCID.getNumDefs();
+ for (const uint16_t *ImpDef = MCID.getImplicitDefs(); *ImpDef; ++ImpDef) {
+ if (Reg == *ImpDef)
+ break;
+ ++NumRes;
+ }
}
return N->getValueType(NumRes);
}