Added function in DFNode to check if this is an allocation node

llvm/include/llvm/IR/DFGraph.h

@@ -358,6 +358,10 @@ public:
     return isEntryNode() || isExitNode();
   }
 
+  bool isAllocationNode() {
+    // If Allocation Property is defined then it is not an allocation node
+    return PropertyList.count(Allocation) != 0;
+  }
   void setRank(int r);
   bool isEntryNode();
   bool isExitNode();

llvm/include/llvm/IR/IntrinsicsVISC.td

@@ -163,6 +163,10 @@ let TargetPrefix = "visc" in {
    */
   def int_visc_barrier : Intrinsic<[], [], []>;
 
+  /* Memory allocation inside the graph
+   * i8* llvm.visc.malloc();
+   */
+  def int_visc_malloc : Intrinsic<[llvm_ptr_ty], [llvm_i32_ty], []>;
 
   /* Find the vector length supported by target architecture
    * intrinsic -