// Generate liveness for uses.
for (unsigned i = 0, e = PhysRegOpers.Uses.size(); i < e; ++i) {
unsigned Reg = PhysRegOpers.Uses[i];
- if (!hasRegAlias(Reg, LivePhysRegs, TRI)
- && (findRegAlias(Reg, PhysRegOpers.Defs, TRI)
- == PhysRegOpers.Defs.end())) {
+ if (!hasRegAlias(Reg, LivePhysRegs, TRI))
increasePhysRegPressure(Reg);
- }
}
for (unsigned i = 0, e = VirtRegOpers.Uses.size(); i < e; ++i) {
unsigned Reg = VirtRegOpers.Uses[i];
- if (!LiveVirtRegs.count(Reg)
- && (std::find(VirtRegOpers.Defs.begin(), VirtRegOpers.Defs.end(), Reg)
- != VirtRegOpers.Defs.end())) {
+ if (!LiveVirtRegs.count(Reg))
increaseVirtRegPressure(Reg);
- }
}
}
/// Get the pressure of each PSet after traversing this instruction bottom-up.
void RegPressureTracker::
getUpwardPressure(const MachineInstr *MI,
- std::vector<unsigned> &PressureResult) {
+ std::vector<unsigned> &PressureResult,
+ std::vector<unsigned> &MaxPressureResult) {
// Snapshot pressure.
PressureResult = CurrSetPressure;
+ MaxPressureResult = P.MaxSetPressure;
bumpUpwardPressure(MI);
// Current pressure becomes the result. Restore current pressure.
+ P.MaxSetPressure.swap(MaxPressureResult);
CurrSetPressure.swap(PressureResult);
}
/// Get the pressure of each PSet after traversing this instruction top-down.
void RegPressureTracker::
getDownwardPressure(const MachineInstr *MI,
- std::vector<unsigned> &PressureResult) {
+ std::vector<unsigned> &PressureResult,
+ std::vector<unsigned> &MaxPressureResult) {
// Snapshot pressure.
PressureResult = CurrSetPressure;
+ MaxPressureResult = P.MaxSetPressure;
bumpDownwardPressure(MI);
// Current pressure becomes the result. Restore current pressure.
+ P.MaxSetPressure.swap(MaxPressureResult);
CurrSetPressure.swap(PressureResult);
}