Add support for target DAG nodes that take 4 operands, such as PowerPC's

rlwinm.

llvm-svn: 22856

1 files changed, 8 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index f413010185b..7f0725efaab 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -1810,6 +1810,14 @@ void SelectionDAG::SelectNodeTo(SDNode *N, MVT::ValueType VT,
   N->setValueTypes(VT);
   N->setOperands(Op1, Op2, Op3);
 }
+void SelectionDAG::SelectNodeTo(SDNode *N, MVT::ValueType VT,
+                                unsigned TargetOpc, SDOperand Op1,
+                                SDOperand Op2, SDOperand Op3, SDOperand Op4) {
+  RemoveNodeFromCSEMaps(N);
+  N->MorphNodeTo(ISD::BUILTIN_OP_END+TargetOpc);
+  N->setValueTypes(VT);
+  N->setOperands(Op1, Op2, Op3, Op4);
+}
 
 /// ReplaceAllUsesWith - Modify anything using 'From' to use 'To' instead.
 /// This can cause recursive merging of nodes in the DAG.