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Fix RegScavenger::forward() to work on basic blocks containing exactly
one instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61236 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -98,6 +98,7 @@ public:
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/// forward / backward - Move the internal MBB iterator and update register
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/// states until it has processed the specific iterator.
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void forward(MachineBasicBlock::iterator I) {
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if (!Tracking && MBB->begin() != I) forward();
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while (MBBI != I) forward();
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}
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void backward(MachineBasicBlock::iterator I) {
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