Add name inference for anonymous functions to facilitate debugging and profiling of JS code.

src/codegen.cc

 // Copyright 2009 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 212 matching lines @@
 // The start_position points to the first '(' character after the function name
 // in the full script source. When counting characters in the script source the
 // the first character is number 0 (not 1).
 void CodeGenerator::SetFunctionInfo(Handle<JSFunction> fun,
                                     int length,
                                     int function_token_position,
                                     int start_position,
                                     int end_position,
                                     bool is_expression,
                                     bool is_toplevel,
-                                    Handle<Script> script) {
+                                    Handle<Script> script,
+                                    Handle<String> inferred_name) {
   fun->shared()->set_length(length);
   fun->shared()->set_formal_parameter_count(length);
   fun->shared()->set_script(*script);
   fun->shared()->set_function_token_position(function_token_position);
   fun->shared()->set_start_position(start_position);
   fun->shared()->set_end_position(end_position);
   fun->shared()->set_is_expression(is_expression);
   fun->shared()->set_is_toplevel(is_toplevel);
+  fun->shared()->set_inferred_name(*inferred_name);
 }
 
 
 static Handle<Code> ComputeLazyCompile(int argc) {
   CALL_HEAP_FUNCTION(StubCache::ComputeLazyCompile(argc), Code);
 }
 
 
 Handle<JSFunction> CodeGenerator::BuildBoilerplate(FunctionLiteral* node) {
 #ifdef DEBUG
@@ skipping 40 matching lines @@
 
   // Create a boilerplate function.
   Handle<JSFunction> function =
       Factory::NewFunctionBoilerplate(node->name(),
                                       node->materialized_literal_count(),
                                       node->contains_array_literal(),
                                       code);
   CodeGenerator::SetFunctionInfo(function, node->num_parameters(),
                                  node->function_token_position(),
                                  node->start_position(), node->end_position(),
-                                 node->is_expression(), false, script_);
+                                 node->is_expression(), false, script_,
+                                 node->inferred_name());
 
   // Notify debugger that a new function has been added.
   Debugger::OnNewFunction(function);
 
   // Set the expected number of properties for instances and return
   // the resulting function.
   SetExpectedNofPropertiesFromEstimate(function,
                                        node->expected_property_count());
   return function;
 }
@@ skipping 297 matching lines @@
 void ArgumentsAccessStub::Generate(MacroAssembler* masm) {
   switch (type_) {
     case READ_LENGTH: GenerateReadLength(masm); break;
     case READ_ELEMENT: GenerateReadElement(masm); break;
     case NEW_OBJECT: GenerateNewObject(masm); break;
   }
 }
 
 
 } }  // namespace v8::internal