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Removed VNInfo::isDefAccurate(). Def "accuracy" can be checked by testing whether LiveIntervals::getInstructionFromIndex(def) returns NULL.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114791 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Lang Hames
2010-09-25 12:04:16 +00:00
parent 8db2defa83
commit 6e2968c85c
11 changed files with 78 additions and 104 deletions
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lib/CodeGen/Spiller.cpp
+12 -10
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@@ -144,7 +144,7 @@ protected:
vrm->addSpillSlotUse(ss, loadInstr);
SlotIndex endIndex = loadIndex.getNextIndex();
VNInfo *loadVNI =
newLI->getNextValue(loadIndex, 0, true, lis->getVNInfoAllocator());
newLI->getNextValue(loadIndex, 0, lis->getVNInfoAllocator());
newLI->addRange(LiveRange(loadIndex, endIndex, loadVNI));
}
@@ -158,7 +158,7 @@ protected:
vrm->addSpillSlotUse(ss, storeInstr);
SlotIndex beginIndex = storeIndex.getPrevIndex();
VNInfo *storeVNI =
newLI->getNextValue(beginIndex, 0, true, lis->getVNInfoAllocator());
newLI->getNextValue(beginIndex, 0, lis->getVNInfoAllocator());
newLI->addRange(LiveRange(beginIndex, storeIndex, storeVNI));
}
@@ -297,7 +297,8 @@ private:
/// Extract the given value number from the interval.
LiveInterval* extractVNI(LiveInterval *li, VNInfo *vni) const {
assert(vni->isDefAccurate() || vni->isPHIDef());
assert((lis->getInstructionFromIndex(vni->def) != 0 || vni->isPHIDef()) &&
"Def index not sane?");
// Create a new vreg and live interval, copy VNI ranges over.
const TargetRegisterClass *trc = mri->getRegClass(li->reg);
@@ -335,8 +336,11 @@ private:
tii->get(TargetOpcode::COPY), newVReg)
.addReg(li->reg, RegState::Kill);
SlotIndex copyIdx = lis->InsertMachineInstrInMaps(copyMI);
VNInfo *phiDefVNI = li->getNextValue(lis->getMBBStartIdx(defMBB),
0, false, lis->getVNInfoAllocator());
SlotIndex phiDefIdx = lis->getMBBStartIdx(defMBB);
assert(lis->getInstructionFromIndex(phiDefIdx) == 0 &&
"PHI def index points at actual instruction.");
VNInfo *phiDefVNI = li->getNextValue(phiDefIdx,
0, lis->getVNInfoAllocator());
phiDefVNI->setIsPHIDef(true);
li->addRange(LiveRange(phiDefVNI->def, copyIdx.getDefIndex(), phiDefVNI));
LiveRange *oldPHIDefRange =
@@ -358,7 +362,6 @@ private:
newVNI->def = copyIdx.getDefIndex();
newVNI->setCopy(copyMI);
newVNI->setIsPHIDef(false); // not a PHI def anymore.
newVNI->setIsDefAccurate(true);
} else {
// non-PHI def. Rename the def. If it's two-addr that means renaming the
// use and inserting a new copy too.
@@ -391,7 +394,7 @@ private:
li->getLiveRangeContaining(newVNI->def.getUseIndex());
origUseRange->end = copyIdx.getDefIndex();
VNInfo *copyVNI = newLI->getNextValue(copyIdx.getDefIndex(), copyMI,
true, lis->getVNInfoAllocator());
lis->getVNInfoAllocator());
LiveRange copyRange(copyIdx.getDefIndex(),defIdx.getDefIndex(),copyVNI);
newLI->addRange(copyRange);
}
@@ -448,7 +451,7 @@ private:
// Insert a new range & vni for the two-address-to-copy value. This
// will be attached to the new live interval.
VNInfo *copyVNI =
newLI->getNextValue(useIdx.getDefIndex(), 0, true,
newLI->getNextValue(useIdx.getDefIndex(), 0,
lis->getVNInfoAllocator());
LiveRange copyRange(useIdx.getDefIndex(),copyIdx.getDefIndex(),copyVNI);
newLI->addRange(copyRange);
@@ -481,8 +484,7 @@ private:
}
VNInfo *newKillVNI = li->getNextValue(copyIdx.getDefIndex(),
copyMI, true,
lis->getVNInfoAllocator());
copyMI, lis->getVNInfoAllocator());
newKillVNI->setHasPHIKill(true);
li->addRange(LiveRange(copyIdx.getDefIndex(),
lis->getMBBEndIdx(killMBB),