Add templatized convienience functions for adding hydrogen instructions

src/hydrogen.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 976 matching lines @@
   CompilationInfo* top_info() { return info_; }
 
   HGraph* CreateGraph();
 
   // Bailout environment manipulation.
   void Push(HValue* value) { environment()->Push(value); }
   HValue* Pop() { return environment()->Pop(); }
 
   // Adding instructions.
   HInstruction* AddInstruction(HInstruction* instr);
+
+  template<class I>
+  I* Add() { return static_cast<I*>(AddInstruction(new(zone()) I())); }
+
+  template<class I, class P1>
+  I* Add(P1 p1) {
+    return static_cast<I*>(AddInstruction(new(zone()) I(p1)));
+  }
+
+  template<class I, class P1, class P2>
+  I* Add(P1 p1, P2 p2) {
+      return static_cast<I*>(AddInstruction(new(zone()) I(p1, p2)));
+  }
+
+  template<class I, class P1, class P2, class P3>
+  I* Add(P1 p1, P2 p2, P3 p3) {
+    return static_cast<I*>(AddInstruction(new(zone()) I(p1, p2, p3)));
+  }
+
   void AddSimulate(BailoutId id,
                    RemovableSimulate removable = FIXED_SIMULATE);
-  HBoundsCheck* AddBoundsCheck(HValue* index, HValue* length);
 
   HReturn* AddReturn(HValue* value);
 
   void IncrementInNoSideEffectsScope() {
     no_side_effects_scope_count_++;
   }
 
   void DecrementInNoSideEffectsScope() {
     no_side_effects_scope_count_--;
   }
@@ skipping 1042 matching lines @@
   EmbeddedVector<char, 64> filename_;
   HeapStringAllocator string_allocator_;
   StringStream trace_;
   int indent_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_H_