/// scheduled as soon as possible after the variable's last use.
///
class LoopDependencies {
- const MachineLoopInfo &MLI;
const MachineDominatorTree &MDT;
public:
LoopDeps;
LoopDeps Deps;
- LoopDependencies(const MachineLoopInfo &mli,
- const MachineDominatorTree &mdt) :
- MLI(mli), MDT(mdt) {}
+ LoopDependencies(const MachineDominatorTree &mdt) : MDT(mdt) {}
/// VisitLoop - Clear out any previous state and analyze the given loop.
///
}
};
+ /// Record a physical register access.
+ /// For non data-dependent uses, OpIdx == -1.
+ struct PhysRegSUOper {
+ SUnit *SU;
+ int OpIdx;
+
+ PhysRegSUOper(SUnit *su, int op): SU(su), OpIdx(op) {}
+ };
+
/// Combine a SparseSet with a 1x1 vector to track physical registers.
/// The SparseSet allows iterating over the (few) live registers for quickly
/// comparing against a regmask or clearing the set.
/// cleared between scheduling regions without freeing unused entries.
class Reg2SUnitsMap {
SparseSet<unsigned> PhysRegSet;
- std::vector<std::vector<SUnit*> > SUnits;
+ std::vector<std::vector<PhysRegSUOper> > SUnits;
public:
typedef SparseSet<unsigned>::const_iterator const_iterator;
/// If this register is mapped, return its existing SUnits vector.
/// Otherwise map the register and return an empty SUnits vector.
- std::vector<SUnit *> &operator[](unsigned Reg) {
+ std::vector<PhysRegSUOper> &operator[](unsigned Reg) {
bool New = PhysRegSet.insert(Reg).second;
assert((!New || SUnits[Reg].empty()) && "stale SUnits vector");
(void)New;
///
virtual void computeLatency(SUnit *SU);
- /// computeOperandLatency - Return dependence edge latency using
- /// operand use/def information
- ///
- /// FindMin may be set to get the minimum vs. expected latency. Minimum
- /// latency is used for scheduling groups, while expected latency is for
- /// instruction cost and critical path.
- virtual unsigned computeOperandLatency(SUnit *Def, SUnit *Use,
- const SDep& dep,
- bool FindMin = false) const;
-
/// schedule - Order nodes according to selected style, filling
/// in the Sequence member.
///
protected:
void initSUnits();
- void addPhysRegDataDeps(SUnit *SU, const MachineOperand &MO);
+ void addPhysRegDataDeps(SUnit *SU, unsigned OperIdx);
void addPhysRegDeps(SUnit *SU, unsigned OperIdx);
void addVRegDefDeps(SUnit *SU, unsigned OperIdx);
void addVRegUseDeps(SUnit *SU, unsigned OperIdx);