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

src/compiler.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 134 matching lines @@
   // Allocate function.
   Handle<JSFunction> fun =
       Factory::NewFunctionBoilerplate(lit->name(),
                                       lit->materialized_literal_count(),
                                       lit->contains_array_literal(),
                                       code);
 
   CodeGenerator::SetFunctionInfo(fun, lit->scope()->num_parameters(),
                                  RelocInfo::kNoPosition,
                                  lit->start_position(), lit->end_position(),
-                                 lit->is_expression(), true, script);
+                                 lit->is_expression(), true, script,
+                                 lit->inferred_name());
 
   // Hint to the runtime system used when allocating space for initial
   // property space by setting the expected number of properties for
   // the instances of the function.
   SetExpectedNofPropertiesFromEstimate(fun, lit->expected_property_count());
 
   // Notify debugger
   Debugger::OnAfterCompile(script, fun);
 
   return fun;
@@ skipping 143 matching lines @@
   if (code.is_null()) {
     Top::StackOverflow();
     return false;
   }
 
 #if defined ENABLE_LOGGING_AND_PROFILING || defined ENABLE_OPROFILE_AGENT
   // Log the code generation. If source information is available include script
   // name and line number. Check explicit whether logging is enabled as finding
   // the line number is not for free.
   if (Logger::is_enabled() || OProfileAgent::is_enabled()) {
+    Handle<String> func_name(lit->name()->length() > 0 ?
+                             *lit->name() : shared->inferred_name());
     if (script->name()->IsString()) {
       int line_num = GetScriptLineNumber(script, start_position);
       if (line_num > 0) {
         line_num += script->line_offset()->value() + 1;
       }
-      LOG(CodeCreateEvent("LazyCompile", *code, *lit->name(),
+      LOG(CodeCreateEvent("LazyCompile", *code, *func_name,
                           String::cast(script->name()), line_num));
-      OProfileAgent::CreateNativeCodeRegion(*lit->name(),
+      OProfileAgent::CreateNativeCodeRegion(*func_name,
                                             String::cast(script->name()),
                                             line_num, code->address(),
                                             code->ExecutableSize());
     } else {
-      LOG(CodeCreateEvent("LazyCompile", *code, *lit->name()));
-      OProfileAgent::CreateNativeCodeRegion(*lit->name(), code->address(),
+      LOG(CodeCreateEvent("LazyCompile", *code, *func_name));
+      OProfileAgent::CreateNativeCodeRegion(*func_name, code->address(),
                                             code->ExecutableSize());
     }
   }
 #endif
 
   // Update the shared function info with the compiled code.
   shared->set_code(*code);
 
   // Set the expected number of properties for instances.
   SetExpectedNofPropertiesFromEstimate(shared, lit->expected_property_count());
 
   // Check the function has compiled code.
   ASSERT(shared->is_compiled());
   return true;
 }
 
 
 } }  // namespace v8::internal