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| author | Chris Lattner <sabre@nondot.org> | 2005-08-17 18:59:17 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2005-08-17 18:59:17 +0000 |
| commit | 6542d950609208de3e1cde704c5f89aad864c0d9 (patch) | |
| tree | d42683321e49054daa090b64e3e7802c87ee79b2 | |
| parent | 8c3484c5181834e6b7060a6064ac769878101f23 (diff) | |
add ReplaceAllUsesWith, and a helper to implemented it
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22833 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | include/llvm/CodeGen/SelectionDAG.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/llvm/CodeGen/SelectionDAG.h b/include/llvm/CodeGen/SelectionDAG.h index bebcd1d944..e8f3ff4636 100644 --- a/include/llvm/CodeGen/SelectionDAG.h +++ b/include/llvm/CodeGen/SelectionDAG.h @@ -239,10 +239,17 @@ public: SDOperand Op1, SDOperand Op2, SDOperand Op3) { return getNode(ISD::BUILTIN_OP_END+Opcode, VT, Op1, Op2, Op3); } + + /// ReplaceAllUsesWith - Modify anything using 'From' to use 'To' instead. + /// This can cause recursive merging of nodes in the DAG. + /// + void ReplaceAllUsesWith(SDNode *From, SDNode *To); + void dump() const; private: void RemoveNodeFromCSEMaps(SDNode *N); + SDNode *AddNonLeafNodeToCSEMaps(SDNode *N); void DeleteNodeIfDead(SDNode *N, void *NodeSet); /// SimplifySetCC - Try to simplify a setcc built with the specified operands |