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add ReplaceAllUsesWith, and a helper to implemented it

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22833 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-08-17 18:59:17 +00:00
parent 8c3484c518
commit 6542d95060
1 changed files with 7 additions and 0 deletions
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7
include/llvm/CodeGen/SelectionDAG.h
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@ -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