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Revert "Replace a big gob of old coalescer logic with the new CoalescerPair class."

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106710 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2010-06-24 00:52:22 +00:00
parent 407014f9a5
commit b8ac3b035b
7 changed files with 552 additions and 226 deletions
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lib/CodeGen/LiveIntervalAnalysis.cpp
+9 -6
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@@ -218,7 +218,10 @@ bool LiveIntervals::conflictsWithPhysReg(const LiveInterval &li,
return false;
}
bool LiveIntervals::conflictsWithAliasRef(LiveInterval &li, unsigned Reg,
/// conflictsWithSubPhysRegRef - Similar to conflictsWithPhysRegRef except
/// it checks for sub-register reference and it can check use as well.
bool LiveIntervals::conflictsWithSubPhysRegRef(LiveInterval &li,
unsigned Reg, bool CheckUse,
SmallPtrSet<MachineInstr*,32> &JoinedCopies) {
for (LiveInterval::Ranges::const_iterator
I = li.ranges.begin(), E = li.ranges.end(); I != E; ++I) {
@@ -236,11 +239,12 @@ bool LiveIntervals::conflictsWithAliasRef(LiveInterval &li, unsigned Reg,
MachineOperand& MO = MI->getOperand(i);
if (!MO.isReg())
continue;
unsigned PhysReg = MO.getReg();
if (PhysReg == 0 || PhysReg == Reg ||
TargetRegisterInfo::isVirtualRegister(PhysReg))
if (MO.isUse() && !CheckUse)
continue;
if (tri_->regsOverlap(Reg, PhysReg))
unsigned PhysReg = MO.getReg();
if (PhysReg == 0 || TargetRegisterInfo::isVirtualRegister(PhysReg))
continue;
if (tri_->isSubRegister(Reg, PhysReg))
return true;
}
}
@@ -1280,7 +1284,6 @@ bool LiveIntervals::anyKillInMBBAfterIdx(const LiveInterval &li,
continue;
SlotIndex KillIdx = VNI->kills[j];
assert(getInstructionFromIndex(KillIdx) && "Dangling kill");
if (KillIdx > Idx && KillIdx <= End)
return true;
}