Remove experimental fast-codegen. We are no longer working on this

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 130 matching lines @@
 
 // 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(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 falling back to using the classic V8 backend")
 DEFINE_bool(safe_int32_compiler, true,
             "enable optimized side-effect-free int32 expressions.")
 DEFINE_bool(use_flow_graph, false, "perform flow-graph based optimizations")
 
 // compilation-cache.cc
 DEFINE_bool(compilation_cache, true, "enable compilation cache")
 
 // data-flow.cc
@@ skipping 280 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