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add a helper method
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22767 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -101,6 +101,11 @@ public:
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/// and deletes it.
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///
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void eraseFromParent();
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/// moveBefore - Unlink this instruction from its current function and
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/// insert it into the function that MovePos lives in, right before
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/// MovePos.
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void moveBefore(BasicBlock *MovePos);
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/// getSinglePredecessor - If this basic block has a single predecessor block,
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/// return the block, otherwise return a null pointer.
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