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Add a new version of ReplaceAllUsesWith, make the comments more useful.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23086 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -279,8 +279,11 @@ public:
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/// ReplaceAllUsesWith - Modify anything using 'From' to use 'To' instead.
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/// This can cause recursive merging of nodes in the DAG.
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/// This can cause recursive merging of nodes in the DAG. Use the first
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/// version if 'From' is known to have a single result, use the second
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/// if you have two nodes with identical results, use the third otherwise.
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///
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void ReplaceAllUsesWith(SDOperand From, SDOperand Op);
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void ReplaceAllUsesWith(SDNode *From, SDNode *To);
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void ReplaceAllUsesWith(SDNode *From, const std::vector<SDOperand> &To);
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