const MachineLoopInfo* loopInfo;
AliasAnalysis *AA;
- BitVector allocatableRegs_;
DenseMap<const TargetRegisterClass*, BitVector> allocatableRCRegs_;
/// JoinedCopies - Keep track of copies eliminated due to coalescing.
public:
static char ID; // Pass identifcation, replacement for typeid
- SimpleRegisterCoalescing() : MachineFunctionPass(&ID) {}
+ SimpleRegisterCoalescing() : MachineFunctionPass(ID) {}
struct InstrSlots {
enum {
/// the source value number is defined by a copy from the destination reg
/// see if we can merge these two destination reg valno# into a single
/// value number, eliminating a copy.
- bool AdjustCopiesBackFrom(LiveInterval &IntA, LiveInterval &IntB,
- MachineInstr *CopyMI);
+ bool AdjustCopiesBackFrom(const CoalescerPair &CP, MachineInstr *CopyMI);
/// HasOtherReachingDefs - Return true if there are definitions of IntB
/// other than BValNo val# that can reach uses of AValno val# of IntA.
/// If the source value number is defined by a commutable instruction and
/// its other operand is coalesced to the copy dest register, see if we
/// can transform the copy into a noop by commuting the definition.
- bool RemoveCopyByCommutingDef(LiveInterval &IntA, LiveInterval &IntB,
- MachineInstr *CopyMI);
+ bool RemoveCopyByCommutingDef(const CoalescerPair &CP,MachineInstr *CopyMI);
/// TrimLiveIntervalToLastUse - If there is a last use in the same basic
/// block as the copy instruction, trim the ive interval to the last use