2 files changed, 34 insertions, 1 deletions
diff --git a/include/llvm/CodeGen/SelectionDAG.h b/include/llvm/CodeGen/SelectionDAG.h
index 9ae92f388e..a350d5fd93 100644
--- a/include/llvm/CodeGen/SelectionDAG.h
+++ b/include/llvm/CodeGen/SelectionDAG.h
@@ -353,6 +353,13 @@ public:
   SDValue getConvertRndSat(MVT VT, DebugLoc dl, SDValue Val, SDValue DTy,
                            SDValue STy,
                            SDValue Rnd, SDValue Sat, ISD::CvtCode Code);
+  
+  /// getVectorShuffle - Return an ISD::VECTOR_SHUFFLE node.  The number of
+  /// elements in VT, which must be a vector type, must match the number of
+  /// mask elements NumElts.  A negative integer mask element is treated as
+  /// undefined.
+  SDValue getVectorShuffle(MVT VT, DebugLoc dl, SDValue N1, SDValue N2, 
+                           const int *MaskElts);
 
   /// getZeroExtendInReg - Return the expression required to zero extend the Op
   /// value assuming it was the smaller SrcTy value.
diff --git a/include/llvm/CodeGen/SelectionDAGNodes.h b/include/llvm/CodeGen/SelectionDAGNodes.h
index aaa39674d7..a850b3fcb5 100644
--- a/include/llvm/CodeGen/SelectionDAGNodes.h
+++ b/include/llvm/CodeGen/SelectionDAGNodes.h
@@ -1703,6 +1703,32 @@ public:
   }
 };
 
+class ShuffleVectorSDNode : public SDNode {
+  SDUse Ops[2];
+  int *Mask;
+protected:
+  friend class SelectionDAG;
+  ShuffleVectorSDNode(MVT VT, DebugLoc dl, SDValue N1, SDValue N2, int *M)
+    : SDNode(ISD::VECTOR_SHUFFLE, dl, getSDVTList(VT)), Mask(M) {
+    InitOperands(Ops, N1, N2);
+  }
+public:
+
+  const int * getMask() const { return Mask; }
+  
+  bool isSplat() { return isSplatMask(Mask, getValueType(0)); }
+  int  getSplatIndex() { 
+    assert(isSplat() && "Cannot get splat index for non-splat!");
+    return Mask[0];
+  }
+  static bool isSplatMask(const int *Mask, MVT VT);
+
+  static bool classof(const ShuffleVectorSDNode *) { return true; }
+  static bool classof(const SDNode *N) {
+    return N->getOpcode() == ISD::VECTOR_SHUFFLE;
+  }
+};
+  
 class ConstantSDNode : public SDNode {
   const ConstantInt *Value;
   friend class SelectionDAG;
@@ -2084,7 +2110,7 @@ public:
     return N->getOpcode() == ISD::CONDCODE;
   }
 };
-
+  
 /// CvtRndSatSDNode - NOTE: avoid using this node as this may disappear in the
 /// future and most targets don't support it.
 class CvtRndSatSDNode : public SDNode {