unsigned DstReg,
unsigned SubIdx) {
bool DstIsPhys = TargetRegisterInfo::isPhysicalRegister(DstReg);
- LiveInterval &DstInt = LIS->getInterval(DstReg);
+ LiveInterval *DstInt = DstIsPhys ? 0 : &LIS->getInterval(DstReg);
// Update LiveDebugVariables.
LDV->renameRegister(SrcReg, DstReg, SubIdx);
// If SrcReg wasn't read, it may still be the case that DstReg is live-in
// because SrcReg is a sub-register.
- if (!Reads && SubIdx)
- Reads = DstInt.liveAt(LIS->getInstructionIndex(UseMI));
+ if (DstInt && !Reads && SubIdx)
+ Reads = DstInt->liveAt(LIS->getInstructionIndex(UseMI));
// Replace SrcReg with DstReg in all UseMI operands.
for (unsigned i = 0, e = Ops.size(); i != e; ++i) {
// Deny any overlapping intervals. This depends on all the reserved
// register live ranges to look like dead defs.
- for (MCRegAliasIterator AS(CP.getDstReg(), TRI, true); AS.isValid(); ++AS) {
- if (!LIS->hasInterval(*AS)) {
- // Make sure at least DstReg itself exists before attempting a join.
- if (*AS == CP.getDstReg())
- LIS->getOrCreateInterval(CP.getDstReg());
- continue;
- }
- if (RHS.overlaps(LIS->getInterval(*AS))) {
- DEBUG(dbgs() << "\t\tInterference: " << PrintReg(*AS, TRI) << '\n');
- return false;
+ if (LIS->trackingRegUnits()) {
+ for (MCRegUnitIterator UI(CP.getDstReg(), TRI); UI.isValid(); ++UI)
+ if (RHS.overlaps(LIS->getRegUnit(*UI))) {
+ DEBUG(dbgs() << "\t\tInterference: " << PrintRegUnit(*UI, TRI) << '\n');
+ return false;
+ }
+ } else {
+ for (MCRegAliasIterator AS(CP.getDstReg(), TRI, true); AS.isValid(); ++AS) {
+ if (!LIS->hasInterval(*AS)) {
+ // Make sure at least DstReg itself exists before attempting a join.
+ if (*AS == CP.getDstReg())
+ LIS->getOrCreateInterval(CP.getDstReg());
+ continue;
+ }
+ if (RHS.overlaps(LIS->getInterval(*AS))) {
+ DEBUG(dbgs() << "\t\tInterference: " << PrintReg(*AS, TRI) << '\n');
+ return false;
+ }
}
}
// Skip any value computations, we are not adding new values to the