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Fix some problems with the updating of SlotIndexes after adding a new MBB. In
particular, holes were being left between two blocks after splitting an edge. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174868 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -603,25 +603,30 @@ namespace llvm {
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MachineFunction::iterator nextMBB =
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llvm::next(MachineFunction::iterator(mbb));
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IndexListEntry *nextEntry = 0;
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if (nextMBB == mbb->getParent()->end())
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nextEntry = &indexList.back();
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else
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nextEntry = getMBBStartIdx(nextMBB).listEntry();
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IndexListEntry *startEntry = createEntry(0, 0);
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IndexListEntry *stopEntry = createEntry(0, 0);
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indexList.insertAfter(nextEntry, startEntry);
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indexList.insertAfter(startEntry, stopEntry);
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IndexListEntry *startEntry = 0;
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IndexListEntry *endEntry = 0;
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if (nextMBB == mbb->getParent()->end()) {
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startEntry = &indexList.back();
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endEntry = createEntry(0, 0);
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indexList.insertAfter(startEntry, endEntry);
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} else {
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startEntry = createEntry(0, 0);
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endEntry = getMBBStartIdx(nextMBB).listEntry();
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indexList.insert(endEntry, startEntry);
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}
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SlotIndex startIdx(startEntry, SlotIndex::Slot_Block);
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SlotIndex endIdx(stopEntry, SlotIndex::Slot_Block);
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SlotIndex endIdx(endEntry, SlotIndex::Slot_Block);
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MachineFunction::iterator prevMBB(mbb);
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assert(prevMBB != mbb->getParent()->end() &&
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"Can't insert a new block at the beginning of a function.");
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--prevMBB;
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MBBRanges[prevMBB->getNumber()].second = startIdx;
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assert(unsigned(mbb->getNumber()) == MBBRanges.size() &&
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"Blocks must be added in order");
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MBBRanges.push_back(std::make_pair(startIdx, endIdx));
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idx2MBBMap.push_back(IdxMBBPair(startIdx, mbb));
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// FIXME: Renumber locally instead of renumbering the whole function every
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