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Value numbers whose def index is a special sentinel value should not be remapped.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54218 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -176,19 +176,22 @@ void LiveIntervals::computeNumbering() {
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// Remap the VNInfo def index, which works the same as the
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// start indices above.
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VNInfo* vni = LI->valno;
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index = vni->def / InstrSlots::NUM;
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offset = vni->def % InstrSlots::NUM;
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if (offset == InstrSlots::LOAD) {
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std::vector<IdxMBBPair>::const_iterator I =
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// VN's with special sentinel defs don't need to be remapped.
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if (vni->def != ~0U && vni->def != ~1U) {
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index = vni->def / InstrSlots::NUM;
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offset = vni->def % InstrSlots::NUM;
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if (offset == InstrSlots::LOAD) {
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std::vector<IdxMBBPair>::const_iterator I =
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std::lower_bound(OldI2MBB.begin(), OldI2MBB.end(), vni->def);
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// Take the pair containing the index
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std::vector<IdxMBBPair>::const_iterator J =
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// Take the pair containing the index
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std::vector<IdxMBBPair>::const_iterator J =
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(I == OldI2MBB.end() && OldI2MBB.size()>0) ? (I-1): I;
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vni->def = getMBBStartIdx(J->second);
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} else {
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vni->def = mi2iMap_[OldI2MI[index]] + offset;
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vni->def = getMBBStartIdx(J->second);
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} else {
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vni->def = mi2iMap_[OldI2MI[index]] + offset;
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}
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}
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// Remap the VNInfo kill indices, which works the same as
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@ -207,7 +210,6 @@ void LiveIntervals::computeNumbering() {
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vni->kills[i] = getMBBEndIdx(I->second) + 1;
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} else {
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unsigned idx = index;
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while (!OldI2MI[index]) ++index;
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while (index < OldI2MI.size() && !OldI2MI[index]) ++index;
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if (index != OldI2MI.size())
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