RFC: Switch to ast ids (instead of positions) for type feedback.

src/compiler.h

 // Copyright 2010 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 41 matching lines @@
   bool is_in_loop() const { return (flags_ & IsInLoop::mask()) != 0; }
   FunctionLiteral* function() const { return function_; }
   Scope* scope() const { return scope_; }
   Handle<Code> code() const { return code_; }
   Handle<JSFunction> closure() const { return closure_; }
   Handle<SharedFunctionInfo> shared_info() const { return shared_info_; }
   Handle<Script> script() const { return script_; }
   v8::Extension* extension() const { return extension_; }
   ScriptDataImpl* pre_parse_data() const { return pre_parse_data_; }
   Handle<Context> calling_context() const { return calling_context_; }
-  int osr_ast_id() const { return osr_ast_id_; }
+  AstId osr_ast_id() const { return osr_ast_id_; }
 
   void MarkAsEval() {
     ASSERT(!is_lazy());
     flags_ |= IsEval::encode(true);
   }
   void MarkAsGlobal() {
     ASSERT(!is_lazy());
     flags_ |= IsGlobal::encode(true);
   }
   void MarkAsInLoop() {
@@ skipping 30 matching lines @@
     return !closure().is_null() && (closure()->context()->global() != NULL);
   }
 
   GlobalObject* global_object() const {
     return has_global_object() ? closure()->context()->global() : NULL;
   }
 
   // Accessors for the different compilation modes.
   bool IsOptimizing() const { return mode_ == OPTIMIZE; }
   bool IsOptimizable() const { return mode_ == BASE; }
-  void SetOptimizing(int osr_ast_id) {
+  void SetOptimizing(AstId osr_ast_id) {
     SetMode(OPTIMIZE);
     osr_ast_id_ = osr_ast_id;
   }
   void DisableOptimization() { SetMode(NONOPT); }
 
   // Deoptimization support.
   bool HasDeoptimizationSupport() const { return supports_deoptimization_; }
   void EnableDeoptimizationSupport() {
     ASSERT(IsOptimizable());
     supports_deoptimization_ = true;
@@ skipping 61 matching lines @@
   v8::Extension* extension_;
   ScriptDataImpl* pre_parse_data_;
 
   // The context of the caller is needed for eval code, and will be a null
   // handle otherwise.
   Handle<Context> calling_context_;
 
   // Compilation mode flag and whether deoptimization is allowed.
   Mode mode_;
   bool supports_deoptimization_;
-  int osr_ast_id_;
+  AstId osr_ast_id_;
 
   DISALLOW_COPY_AND_ASSIGN(CompilationInfo);
 };
 
 
 // The V8 compiler
 //
 // General strategy: Source code is translated into an anonymous function w/o
 // parameters which then can be executed. If the source code contains other
 // functions, they will be compiled and allocated as part of the compilation
@@ skipping 61 matching lines @@
       FrameElement::ClearConstantList();
       Result::ClearConstantList();
     }
   }
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_COMPILER_H_