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Temporarily revert r63025 until the testsuite failures can be fixed.

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llvm-svn: 63040
This commit is contained in:
Bill Wendling 2009-01-26 21:27:03 +00:00
parent 2932f7e681
commit 3cf6d13f21
1 changed files with 34 additions and 12 deletions
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46
lib/CodeGen/PreAllocSplitting.cpp
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@ -563,12 +563,12 @@ VNInfo* PreAllocSplitting::PerformPHIConstruction(
ret = PerformPHIConstruction(walker, MBB, LI, Visited, Defs, Uses,
NewVNs, LiveOut, Phis, false, true);
LI->addRange(LiveRange(UseIndex, EndIndex+1, ret));
// FIXME: Need to set kills properly for inter-block stuff.
if (LI->isKill(ret, UseIndex)) LI->removeKill(ret, UseIndex);
if (intrablock)
LI->addKill(ret, EndIndex);
LI->addRange(LiveRange(UseIndex, EndIndex+1, ret));
} else if (ContainsDefs && ContainsUses){
SmallPtrSet<MachineInstr*, 2>& BlockDefs = Defs[MBB];
SmallPtrSet<MachineInstr*, 2>& BlockUses = Uses[MBB];
@ -620,13 +620,13 @@ VNInfo* PreAllocSplitting::PerformPHIConstruction(
ret = PerformPHIConstruction(walker, MBB, LI, Visited, Defs, Uses,
NewVNs, LiveOut, Phis, false, true);
LI->addRange(LiveRange(StartIndex, EndIndex+1, ret));
if (foundUse && LI->isKill(ret, StartIndex))
LI->removeKill(ret, StartIndex);
if (intrablock) {
LI->addKill(ret, EndIndex);
}
LI->addRange(LiveRange(StartIndex, EndIndex+1, ret));
}
// Memoize results so we don't have to recompute them.
@ -810,10 +810,18 @@ bool PreAllocSplitting::Rematerialize(unsigned vreg, VNInfo* ValNo,
TII->reMaterialize(MBB, RestorePt, vreg, DefMI);
LIs->InsertMachineInstrInMaps(prior(RestorePt), RestoreIdx);
ReconstructLiveInterval(CurrLI);
unsigned RematIdx = LIs->getInstructionIndex(prior(RestorePt));
RematIdx = LiveIntervals::getDefIndex(RematIdx);
RenumberValno(CurrLI->findDefinedVNInfo(RematIdx));
if (KillPt->getParent() == BarrierMBB) {
VNInfo* After = UpdateRegisterInterval(ValNo, LIs->getUseIndex(KillIdx)+1,
LIs->getDefIndex(RestoreIdx));
RenumberValno(After);
++NumSplits;
++NumRemats;
return true;
}
RepairLiveInterval(CurrLI, ValNo, DefMI, RestoreIdx);
++NumSplits;
++NumRemats;
@ -986,14 +994,28 @@ bool PreAllocSplitting::SplitRegLiveInterval(LiveInterval *LI) {
MachineInstr *LoadMI = prior(RestorePt);
LIs->InsertMachineInstrInMaps(LoadMI, RestoreIndex);
// If live interval is spilled in the same block as the barrier, just
// create a hole in the interval.
if (!DefMBB ||
(SpillMI && SpillMI->getParent() == BarrierMBB)) {
// Update spill stack slot live interval.
UpdateSpillSlotInterval(ValNo, LIs->getUseIndex(SpillIndex)+1,
LIs->getDefIndex(RestoreIndex));
VNInfo* After = UpdateRegisterInterval(ValNo,
LIs->getUseIndex(SpillIndex)+1,
LIs->getDefIndex(RestoreIndex));
RenumberValno(After);
++NumSplits;
return true;
}
// Update spill stack slot live interval.
UpdateSpillSlotInterval(ValNo, LIs->getUseIndex(SpillIndex)+1,
LIs->getDefIndex(RestoreIndex));
ReconstructLiveInterval(CurrLI);
unsigned RestoreIdx = LIs->getInstructionIndex(prior(RestorePt));
RestoreIdx = LiveIntervals::getDefIndex(RestoreIdx);
RenumberValno(CurrLI->findDefinedVNInfo(RestoreIdx));
RepairLiveInterval(CurrLI, ValNo, DefMI, RestoreIndex);
++NumSplits;
return true;