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-rw-r--r--llvm/lib/CodeGen/MachineScheduler.cpp8
-rw-r--r--llvm/lib/CodeGen/RegisterPressure.cpp62
2 files changed, 36 insertions, 34 deletions
diff --git a/llvm/lib/CodeGen/MachineScheduler.cpp b/llvm/lib/CodeGen/MachineScheduler.cpp
index 3eaefa8..bc89b134 100644
--- a/llvm/lib/CodeGen/MachineScheduler.cpp
+++ b/llvm/lib/CodeGen/MachineScheduler.cpp
@@ -878,8 +878,8 @@ void ScheduleDAGMILive::initRegPressure() {
DEBUG(RPTracker.dump());
// Initialize the live ins and live outs.
- TopRPTracker.addLiveRegs(RPTracker.getLiveIn());
- BotRPTracker.addLiveRegs(RPTracker.getLiveOut());
+ TopRPTracker.addLiveRegs(RPTracker.getPressure().LiveInRegs);
+ BotRPTracker.addLiveRegs(RPTracker.getPressure().LiveOutRegs);
// Close one end of the tracker so we can call
// getMaxUpward/DownwardPressureDelta before advancing across any
@@ -896,7 +896,7 @@ void ScheduleDAGMILive::initRegPressure() {
// For each live out vreg reduce the pressure change associated with other
// uses of the same vreg below the live-out reaching def.
- updatePressureDiffs(RPTracker.getLiveOut());
+ updatePressureDiffs(RPTracker.getPressure().LiveOutRegs);
// Account for liveness generated by the region boundary.
if (LiveRegionEnd != RegionEnd) {
@@ -1135,7 +1135,7 @@ unsigned ScheduleDAGMILive::computeCyclicCriticalPath() {
unsigned MaxCyclicLatency = 0;
// Visit each live out vreg def to find def/use pairs that cross iterations.
- ArrayRef<unsigned> LiveOuts = RPTracker.getLiveOut();
+ ArrayRef<unsigned> LiveOuts = RPTracker.getPressure().LiveOutRegs;
for (ArrayRef<unsigned>::iterator RI = LiveOuts.begin(), RE = LiveOuts.end();
RI != RE; ++RI) {
unsigned Reg = *RI;
diff --git a/llvm/lib/CodeGen/RegisterPressure.cpp b/llvm/lib/CodeGen/RegisterPressure.cpp
index 5a0b221..237e465 100644
--- a/llvm/lib/CodeGen/RegisterPressure.cpp
+++ b/llvm/lib/CodeGen/RegisterPressure.cpp
@@ -58,6 +58,14 @@ LLVM_DUMP_METHOD
void RegisterPressure::dump(const TargetRegisterInfo *TRI) const {
dbgs() << "Max Pressure: ";
dumpRegSetPressure(MaxSetPressure, TRI);
+ dbgs() << "Live In: ";
+ for (unsigned i = 0, e = LiveInRegs.size(); i < e; ++i)
+ dbgs() << PrintVRegOrUnit(LiveInRegs[i], TRI) << " ";
+ dbgs() << '\n';
+ dbgs() << "Live Out: ";
+ for (unsigned i = 0, e = LiveOutRegs.size(); i < e; ++i)
+ dbgs() << PrintVRegOrUnit(LiveOutRegs[i], TRI) << " ";
+ dbgs() << '\n';
}
LLVM_DUMP_METHOD
@@ -67,14 +75,6 @@ void RegPressureTracker::dump() const {
dumpRegSetPressure(CurrSetPressure, TRI);
}
P.dump(TRI);
- dbgs() << "Live In: ";
- for (unsigned i = 0, e = LiveInRegs.size(); i < e; ++i)
- dbgs() << PrintVRegOrUnit(LiveInRegs[i], TRI) << " ";
- dbgs() << '\n';
- dbgs() << "Live Out: ";
- for (unsigned i = 0, e = LiveOutRegs.size(); i < e; ++i)
- dbgs() << PrintVRegOrUnit(LiveOutRegs[i], TRI) << " ";
- dbgs() << '\n';
}
void PressureDiff::dump(const TargetRegisterInfo &TRI) const {
@@ -112,12 +112,16 @@ void RegPressureTracker::decreaseRegPressure(ArrayRef<unsigned> RegUnits) {
void IntervalPressure::reset() {
TopIdx = BottomIdx = SlotIndex();
MaxSetPressure.clear();
+ LiveInRegs.clear();
+ LiveOutRegs.clear();
}
/// Clear the result so it can be used for another round of pressure tracking.
void RegionPressure::reset() {
TopPos = BottomPos = MachineBasicBlock::const_iterator();
MaxSetPressure.clear();
+ LiveInRegs.clear();
+ LiveOutRegs.clear();
}
/// If the current top is not less than or equal to the next index, open it.
@@ -126,6 +130,7 @@ void IntervalPressure::openTop(SlotIndex NextTop) {
if (TopIdx <= NextTop)
return;
TopIdx = SlotIndex();
+ LiveInRegs.clear();
}
/// If the current top is the previous instruction (before receding), open it.
@@ -133,6 +138,7 @@ void RegionPressure::openTop(MachineBasicBlock::const_iterator PrevTop) {
if (TopPos != PrevTop)
return;
TopPos = MachineBasicBlock::const_iterator();
+ LiveInRegs.clear();
}
/// If the current bottom is not greater than the previous index, open it.
@@ -140,6 +146,7 @@ void IntervalPressure::openBottom(SlotIndex PrevBottom) {
if (BottomIdx > PrevBottom)
return;
BottomIdx = SlotIndex();
+ LiveInRegs.clear();
}
/// If the current bottom is the previous instr (before advancing), open it.
@@ -147,6 +154,7 @@ void RegionPressure::openBottom(MachineBasicBlock::const_iterator PrevBottom) {
if (BottomPos != PrevBottom)
return;
BottomPos = MachineBasicBlock::const_iterator();
+ LiveInRegs.clear();
}
const LiveRange *RegPressureTracker::getLiveRange(unsigned Reg) const {
@@ -167,8 +175,6 @@ void RegPressureTracker::reset() {
static_cast<IntervalPressure&>(P).reset();
else
static_cast<RegionPressure&>(P).reset();
- LiveInRegs.clear();
- LiveOutRegs.clear();
LiveRegs.PhysRegs.clear();
LiveRegs.VirtRegs.clear();
@@ -243,10 +249,10 @@ void RegPressureTracker::closeTop() {
else
static_cast<RegionPressure&>(P).TopPos = CurrPos;
- assert(LiveInRegs.empty() && "inconsistent max pressure result");
- LiveInRegs.reserve(LiveRegs.PhysRegs.size() + LiveRegs.VirtRegs.size());
- LiveInRegs.append(LiveRegs.PhysRegs.begin(), LiveRegs.PhysRegs.end());
- LiveInRegs.append(LiveRegs.VirtRegs.begin(), LiveRegs.VirtRegs.end());
+ assert(P.LiveInRegs.empty() && "inconsistent max pressure result");
+ P.LiveInRegs.reserve(LiveRegs.PhysRegs.size() + LiveRegs.VirtRegs.size());
+ P.LiveInRegs.append(LiveRegs.PhysRegs.begin(), LiveRegs.PhysRegs.end());
+ P.LiveInRegs.append(LiveRegs.VirtRegs.begin(), LiveRegs.VirtRegs.end());
}
/// Set the boundary for the bottom of the region and summarize live outs.
@@ -256,10 +262,10 @@ void RegPressureTracker::closeBottom() {
else
static_cast<RegionPressure&>(P).BottomPos = CurrPos;
- assert(LiveOutRegs.empty() && "inconsistent max pressure result");
- LiveOutRegs.reserve(LiveRegs.PhysRegs.size() + LiveRegs.VirtRegs.size());
- LiveOutRegs.append(LiveRegs.PhysRegs.begin(), LiveRegs.PhysRegs.end());
- LiveOutRegs.append(LiveRegs.VirtRegs.begin(), LiveRegs.VirtRegs.end());
+ assert(P.LiveOutRegs.empty() && "inconsistent max pressure result");
+ P.LiveOutRegs.reserve(LiveRegs.PhysRegs.size() + LiveRegs.VirtRegs.size());
+ P.LiveOutRegs.append(LiveRegs.PhysRegs.begin(), LiveRegs.PhysRegs.end());
+ P.LiveOutRegs.append(LiveRegs.VirtRegs.begin(), LiveRegs.VirtRegs.end());
}
/// Finalize the region boundaries and record live ins and live outs.
@@ -283,8 +289,8 @@ void RegPressureTracker::closeRegion() {
void RegPressureTracker::initLiveThru(const RegPressureTracker &RPTracker) {
LiveThruPressure.assign(TRI->getNumRegPressureSets(), 0);
assert(isBottomClosed() && "need bottom-up tracking to intialize.");
- for (unsigned i = 0, e = LiveOutRegs.size(); i < e; ++i) {
- unsigned Reg = LiveOutRegs[i];
+ for (unsigned i = 0, e = P.LiveOutRegs.size(); i < e; ++i) {
+ unsigned Reg = P.LiveOutRegs[i];
if (TargetRegisterInfo::isVirtualRegister(Reg)
&& !RPTracker.hasUntiedDef(Reg)) {
increaseSetPressure(LiveThruPressure, MRI->getPressureSets(Reg));
@@ -425,22 +431,22 @@ void RegPressureTracker::addLiveRegs(ArrayRef<unsigned> Regs) {
/// Add Reg to the live in set and increase max pressure.
void RegPressureTracker::discoverLiveIn(unsigned Reg) {
assert(!LiveRegs.contains(Reg) && "avoid bumping max pressure twice");
- if (containsReg(LiveInRegs, Reg))
+ if (containsReg(P.LiveInRegs, Reg))
return;
// At live in discovery, unconditionally increase the high water mark.
- LiveInRegs.push_back(Reg);
+ P.LiveInRegs.push_back(Reg);
increaseSetPressure(P.MaxSetPressure, MRI->getPressureSets(Reg));
}
/// Add Reg to the live out set and increase max pressure.
void RegPressureTracker::discoverLiveOut(unsigned Reg) {
assert(!LiveRegs.contains(Reg) && "avoid bumping max pressure twice");
- if (containsReg(LiveOutRegs, Reg))
+ if (containsReg(P.LiveOutRegs, Reg))
return;
// At live out discovery, unconditionally increase the high water mark.
- LiveOutRegs.push_back(Reg);
+ P.LiveOutRegs.push_back(Reg);
increaseSetPressure(P.MaxSetPressure, MRI->getPressureSets(Reg));
}
@@ -477,11 +483,8 @@ bool RegPressureTracker::recede(SmallVectorImpl<unsigned> *LiveUses,
SlotIdx = LIS->getInstructionIndex(CurrPos).getRegSlot();
// Open the top of the region using slot indexes.
- if (isTopClosed()) {
- if (RequireIntervals)
- static_cast<IntervalPressure&>(P).openTop(SlotIdx);
- LiveInRegs.clear();
- }
+ if (RequireIntervals && isTopClosed())
+ static_cast<IntervalPressure&>(P).openTop(SlotIdx);
RegisterOperands RegOpers(TRI, MRI);
collectOperands(CurrPos, RegOpers);
@@ -570,7 +573,6 @@ bool RegPressureTracker::advance() {
static_cast<IntervalPressure&>(P).openBottom(SlotIdx);
else
static_cast<RegionPressure&>(P).openBottom(CurrPos);
- LiveOutRegs.clear();
}
RegisterOperands RegOpers(TRI, MRI);
generated by cgit v1.1 at 2025-10-17 14:30:49 +0000