Refactor the selection of code generator (toplevel or optimizing) and...

src/flag-definitions.h

 // Copyright 2008 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 125 matching lines @@
 DEFINE_bool(defer_negation, true, "defer negation operation")
 
 // codegen.cc
 DEFINE_bool(lazy, true, "use lazy compilation")
 DEFINE_bool(debug_info, true, "add debug information to compiled functions")
 
 // compiler.cc
 DEFINE_bool(strict, false, "strict error checking")
 DEFINE_int(min_preparse_length, 1024,
            "minimum length for automatic enable preparsing")
-DEFINE_bool(fast_compiler, true,
-            "use the fast-mode compiler for some top-level code")
+DEFINE_bool(full_compiler, true, "enable dedicated backend for run-once code")
+DEFINE_bool(fast_compiler, false, "enable speculative optimizing backend")
+DEFINE_bool(always_full_compiler, false,
+            "try to use the dedicated run-once backend for all code")
+DEFINE_bool(always_fast_compiler, false,
+            "try to use the speculative optimizing backend for all code")
 DEFINE_bool(trace_bailout, false,
-            "print reasons for failing to use fast compilation")
-DEFINE_bool(always_fast_compiler, false,
-            "always try using the fast compiler")
+            "print reasons for falling back to using the classic V8 backend")
 
 // compilation-cache.cc
 DEFINE_bool(compilation_cache, true, "enable compilation cache")
 
 // debug.cc
 DEFINE_bool(remote_debugging, false, "enable remote debugging")
 DEFINE_bool(trace_debug_json, false, "trace debugging JSON request/response")
 DEFINE_bool(debugger_auto_break, true,
             "automatically set the debug break flag when debugger commands are "
             "in the queue")
@@ skipping 257 matching lines @@
 #undef FLAG
 
 #undef DEFINE_bool
 #undef DEFINE_int
 #undef DEFINE_string
 
 #undef FLAG_MODE_DECLARE
 #undef FLAG_MODE_DEFINE
 #undef FLAG_MODE_DEFINE_DEFAULTS
 #undef FLAG_MODE_META