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Revert patches 1.79 and 1.80 which had to do with dead MBB's. Now that they
don't exist, we don't have to pretend to handle them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14567 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -356,7 +356,8 @@ void LiveIntervals::handlePhysicalRegisterDef(MachineBasicBlock* mbb,
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}
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// a variable can only be killed by subsequent instructions
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for (++mi; mi != e; ++mi) {
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do {
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++mi;
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baseIndex += InstrSlots::NUM;
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for (KillIter ki = lv_->killed_begin(mi), ke = lv_->killed_end(mi);
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ki != ke; ++ki) {
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@ -366,13 +367,10 @@ void LiveIntervals::handlePhysicalRegisterDef(MachineBasicBlock* mbb,
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goto exit;
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}
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}
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}
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} while (mi != e);
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// LiveVariables does not compute information for dead basic blocks.
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DEBUG(std::cerr << "Didn't find the end of the interval. Must be in a "
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"dead block.");
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end = getDefIndex(start)+1;
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exit:
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assert(start < end && "did not find end of interval?");
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interval.addRange(start, end);
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DEBUG(std::cerr << '\n');
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}
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