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Replace a few uses of SelectionDAG::getTargetNode with

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SelectionDAG::SelectNodeTo in the instruction selector. This
updates existing nodes in place instead of creating new ones.

Go back to selecting ISD::DBG_LABEL nodes into
TargetInstrInfo::DBG_LABEL nodes instead of leaving them
unselected, now that SelectNodeTo allows us to update them
in place.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53057 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2008-07-02 23:23:19 +00:00
parent 501e763dfe
commit cd920d9ecf
4 changed files with 83 additions and 123 deletions
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9
include/llvm/CodeGen/SelectionDAG.h
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@@ -461,10 +461,19 @@ public:
SDOperand Op1, SDOperand Op2, SDOperand Op3);
SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT,
SDOperandPtr Ops, unsigned NumOps);
SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, MVT VT2);
SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1,
MVT VT2, SDOperandPtr Ops, unsigned NumOps);
SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1,
MVT VT2, MVT VT3, SDOperandPtr Ops, unsigned NumOps);
SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1,
MVT VT2, SDOperand Op1);
SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1,
MVT VT2, SDOperand Op1, SDOperand Op2);
SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1,
MVT VT2, SDOperand Op1, SDOperand Op2, SDOperand Op3);
SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, SDVTList VTs,
SDOperandPtr Ops, unsigned NumOps);
/// getTargetNode - These are used for target selectors to create a new node