Force context allocation for variables in generator scopes.

src/v8globals.h

 // Copyright 2012 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 478 matching lines @@
   LET,             // declared via 'let' declarations (first lexical)
 
   CONST_HARMONY,   // declared via 'const' declarations in harmony mode
 
   MODULE,          // declared via 'module' declaration (last lexical)
 
   // Variables introduced by the compiler:
   INTERNAL,        // like VAR, but not user-visible (may or may not
                    // be in a context)
 
-  TEMPORARY,       // temporary variables (not user-visible), never
-                   // in a context
+  TEMPORARY,       // temporary variables (not user-visible), usually
+                   // stack-allocated

[Michael Starzinger, 2013/04/05 11:38:42]

nit: Let's add "... (unless the scope forces context allocation)"

[wingo, 2013/04/05 12:25:06]

Done.

 
   DYNAMIC,         // always require dynamic lookup (we don't know
                    // the declaration)
 
   DYNAMIC_GLOBAL,  // requires dynamic lookup, but we know that the
                    // variable is global unless it has been shadowed
                    // by an eval-introduced variable
 
   DYNAMIC_LOCAL    // requires dynamic lookup, but we know that the
                    // variable is local and where it is unless it
@@ skipping 61 matching lines @@
 
 enum ClearExceptionFlag {
   KEEP_EXCEPTION,
   CLEAR_EXCEPTION
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_V8GLOBALS_H_