Implement simple fast-path code for functions containing this property stores and global variables.

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 94 matching lines @@
     FullCodeGenSyntaxChecker checker;
     checker.Check(literal);
     if (checker.has_supported_syntax()) {
       return FullCodeGenerator::MakeCode(literal, script, is_eval);
     }
   } else if (FLAG_always_fast_compiler ||
              (FLAG_fast_compiler && !is_run_once)) {
     FastCodeGenSyntaxChecker checker;
     checker.Check(literal, info);
     if (checker.has_supported_syntax()) {
-      // Does not yet generate code.
-      FastCodeGenerator::MakeCode(literal, script, is_eval, info);
+      return FastCodeGenerator::MakeCode(literal, script, is_eval, info);
     }
   }
 
   return CodeGenerator::MakeCode(literal, script, is_eval, info);
 }
 
 
 static Handle<JSFunction> MakeFunction(bool is_global,
                                        bool is_eval,
                                        Compiler::ValidationState validate,
@@ skipping 356 matching lines @@
                                            false);  // Not eval.
         is_compiled = true;
       }
     } else if (FLAG_always_fast_compiler ||
                (FLAG_fast_compiler && !is_run_once)) {
       // Since we are not lazily compiling we do not have a receiver to
       // specialize for.
       FastCodeGenSyntaxChecker checker;
       checker.Check(literal, &info);
       if (checker.has_supported_syntax()) {
-        // Does not yet generate code.
-        FastCodeGenerator::MakeCode(literal, script, false, &info);
+        code = FastCodeGenerator::MakeCode(literal, script, false, &info);
+        is_compiled = true;
       }
     }
 
     if (!is_compiled) {
       // We fall back to the classic V8 code generator.
       code = CodeGenerator::MakeCode(literal,
                                      script,
                                      false,  // Not eval.
                                      &info);
     }
@@ skipping 52 matching lines @@
   fun->shared()->set_is_toplevel(is_toplevel);
   fun->shared()->set_inferred_name(*lit->inferred_name());
   fun->shared()->SetThisPropertyAssignmentsInfo(
       lit->has_only_simple_this_property_assignments(),
       *lit->this_property_assignments());
   fun->shared()->set_try_full_codegen(lit->try_full_codegen());
 }
 
 
 } }  // namespace v8::internal