Initial prototype of object layout generation.

tools/objects-gen.h.mustache

 // Copyright 2013 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
 //       with the distribution.
 //     * Neither the name of Google Inc. nor the names of its
 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#ifndef V8_HYDROGEN_BCE_H_
-#define V8_HYDROGEN_BCE_H_
+// This file is automatically generated from 'objects.layout' and should
+// not be modified by hand. Run 'make objects' instead to update it.
 
-#include "hydrogen.h"
+#ifndef V8_OBJECTS_GEN_H_
+#define V8_OBJECTS_GEN_H_
 
-namespace v8 {
-namespace internal {
+{{#types}}
 
+{{comment}}
+class {{name}} : public {{base}} {
+ public:
+{{#fields}}
+{{#field_comment}}
+  // [{{field_name_lower}}]: {{field_comment}}
+{{/field_comment}}
+{{#is_smi}}
+  inline int {{field_name_lower}}();
+  inline void set_{{field_name_lower}}(int value);
+{{/is_smi}}
+{{^is_primitive}}
+  DECL_ACCESSORS({{field_name_lower}}, {{type}})
+{{/is_primitive}}
+{{/fields}}
+{{#bitfields}}
 
-class BoundsCheckBbData;
-class BoundsCheckKey;
-class BoundsCheckTable : private ZoneHashMap {
- public:
-  explicit BoundsCheckTable(Zone* zone);
+  // Following fields are encoded within the '{{field_name_lower}}' field.
+{{#bitfield}}
+  DECL_BOOLEAN_ACCESSORS({{name}})
+{{/bitfield}}
+{{/bitfields}}
 
-  INLINE(BoundsCheckBbData** LookupOrInsert(BoundsCheckKey* key, Zone* zone));
-  INLINE(void Insert(BoundsCheckKey* key, BoundsCheckBbData* data, Zone* zone));
-  INLINE(void Delete(BoundsCheckKey* key));
+  // Casting.
+  static inline {{name}}* cast(Object* object);
+
+  // Dispatched behavior.
+  DECLARE_PRINTER({{name}})
+  DECLARE_VERIFIER({{name}})
+
+  // Layout description.
+{{#fields}}
+  static const int k{{field_name_pascal}}Offset = {{field_offset}};
+{{/fields}}
+  static const int kSize = {{type_size}};
 
  private:
-  DISALLOW_COPY_AND_ASSIGN(BoundsCheckTable);
+{{#bitfields}}
+  // Bit positions within the '{{field_name_lower}}' field.
+{{#bitfield}}
+  static const int k{{bitfield_name_pascal}}Bit = {{bitfield_start}};
+{{/bitfield}}
+
+{{/bitfields}}
+  DISALLOW_IMPLICIT_CONSTRUCTORS({{name}});
 };
 
 
-class HBoundsCheckEliminationPhase : public HPhase {
- public:
-  explicit HBoundsCheckEliminationPhase(HGraph* graph)
-      : HPhase("H_Bounds checks elimination", graph), table_(zone()) { }
-
-  void Run() {
-    EliminateRedundantBoundsChecks(graph()->entry_block());
-  }
-
- private:
-  void EliminateRedundantBoundsChecks(HBasicBlock* bb);
-
-  BoundsCheckTable table_;
-
-  DISALLOW_COPY_AND_ASSIGN(HBoundsCheckEliminationPhase);
-};
+/*bool Object::Is{{name}}() {
+  return Object::IsHeapObject() &&
+      HeapObject::cast(this)->map()->instance_type() == {{type_name_upper}}_TYPE;
+}*/
 
 
-} }  // namespace v8::internal
+/*{{name}}* {{name}}::cast(Object* object) {
+  ASSERT(object->Is{{name}}());
+  return reinterpret_cast<{{name}}*>(object);
+}*/
 
-#endif  // V8_HYDROGEN_BCE_H_
+{{/types}}
+
+#endif  // V8_OBJECTS_GEN_H_