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Add regunit liveness support to LiveIntervals::handleMove().

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When LiveIntervals is tracking fixed interference in regunits, make sure
to update those intervals as well. Currently guarded by -live-regunits.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158766 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2012-06-19 23:50:18 +00:00
parent 6e9a757d65
commit bf833f0747
1 changed files with 50 additions and 43 deletions
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93
lib/CodeGen/LiveIntervalAnalysis.cpp
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@ -1193,36 +1193,34 @@ private:
// TODO: Currently we're skipping uses that are reserved or have no
// interval, but we're not updating their kills. This should be
// fixed.
if (!LIS.hasInterval(Reg) ||
(TargetRegisterInfo::isPhysicalRegister(Reg) && LIS.isReserved(Reg)))
if (TargetRegisterInfo::isPhysicalRegister(Reg) && LIS.isReserved(Reg))
continue;
LiveInterval* LI = &LIS.getInterval(Reg);
if (TargetRegisterInfo::isPhysicalRegister(Reg) && LIS.trackingRegUnits())
for (MCRegUnitIterator Units(Reg, &TRI); Units.isValid(); ++Units)
collectRanges(MO, &LIS.getRegUnit(*Units),
Entering, Internal, Exiting, OldIdx);
else if (LIS.hasInterval(Reg))
collectRanges(MO, &LIS.getInterval(Reg),
Entering, Internal, Exiting, OldIdx);
}
}
if (MO.readsReg()) {
LiveRange* LR = LI->getLiveRangeContaining(OldIdx);
if (LR != 0)
Entering.insert(std::make_pair(LI, LR));
}
if (MO.isDef()) {
if (MO.isEarlyClobber()) {
LiveRange* LR = LI->getLiveRangeContaining(OldIdx.getRegSlot(true));
assert(LR != 0 && "No EC range?");
if (LR->end > OldIdx.getDeadSlot())
Exiting.insert(std::make_pair(LI, LR));
else
Internal.insert(std::make_pair(LI, LR));
} else if (MO.isDead()) {
LiveRange* LR = LI->getLiveRangeContaining(OldIdx.getRegSlot());
assert(LR != 0 && "No dead-def range?");
Internal.insert(std::make_pair(LI, LR));
} else {
LiveRange* LR = LI->getLiveRangeContaining(OldIdx.getDeadSlot());
assert(LR && LR->end > OldIdx.getDeadSlot() &&
"Non-dead-def should have live range exiting.");
Exiting.insert(std::make_pair(LI, LR));
}
}
void collectRanges(const MachineOperand &MO, LiveInterval *LI,
RangeSet &Entering, RangeSet &Internal, RangeSet &Exiting,
SlotIndex OldIdx) {
if (MO.readsReg()) {
LiveRange* LR = LI->getLiveRangeContaining(OldIdx);
if (LR != 0)
Entering.insert(std::make_pair(LI, LR));
}
if (MO.isDef()) {
LiveRange* LR = LI->getLiveRangeContaining(OldIdx.getRegSlot());
assert(LR != 0 && "No live range for def?");
if (LR->end > OldIdx.getDeadSlot())
Exiting.insert(std::make_pair(LI, LR));
else
Internal.insert(std::make_pair(LI, LR));
}
}
@ -1243,25 +1241,34 @@ private:
// TODO: Currently we're skipping uses that are reserved or have no
// interval, but we're not updating their kills. This should be
// fixed.
if (!LIS.hasInterval(Reg) ||
(TargetRegisterInfo::isPhysicalRegister(Reg) && LIS.isReserved(Reg)))
if (TargetRegisterInfo::isPhysicalRegister(Reg) && LIS.isReserved(Reg))
continue;
LiveInterval* LI = &LIS.getInterval(Reg);
if (TargetRegisterInfo::isPhysicalRegister(Reg) && LIS.trackingRegUnits())
for (MCRegUnitIterator Units(Reg, &TRI); Units.isValid(); ++Units)
collectRangesInBundle(MO, &LIS.getRegUnit(*Units),
Entering, Exiting, MIStartIdx, MIEndIdx);
else if (LIS.hasInterval(Reg))
collectRangesInBundle(MO, &LIS.getInterval(Reg),
Entering, Exiting, MIStartIdx, MIEndIdx);
}
}
if (MO.readsReg()) {
LiveRange* LR = LI->getLiveRangeContaining(MIStartIdx);
if (LR != 0)
Entering.insert(std::make_pair(LI, LR));
}
if (MO.isDef()) {
assert(!MO.isEarlyClobber() &&
"Early clobbers not allowed in bundles.");
assert(!MO.isDead() && "Dead-defs not allowed in bundles.");
LiveRange* LR = LI->getLiveRangeContaining(MIEndIdx.getDeadSlot());
assert(LR != 0 && "Internal ranges not allowed in bundles.");
Exiting.insert(std::make_pair(LI, LR));
}
void collectRangesInBundle(const MachineOperand &MO, LiveInterval *LI,
RangeSet &Entering, RangeSet &Exiting,
SlotIndex MIStartIdx, SlotIndex MIEndIdx) {
if (MO.readsReg()) {
LiveRange* LR = LI->getLiveRangeContaining(MIStartIdx);
if (LR != 0)
Entering.insert(std::make_pair(LI, LR));
}
if (MO.isDef()) {
assert(!MO.isEarlyClobber() &&
"Early clobbers not allowed in bundles.");
assert(!MO.isDead() && "Dead-defs not allowed in bundles.");
LiveRange* LR = LI->getLiveRangeContaining(MIEndIdx.getDeadSlot());
assert(LR != 0 && "Internal ranges not allowed in bundles.");
Exiting.insert(std::make_pair(LI, LR));
}
}