Merge bleeding edge up to 8774 into the GC branch.

src/flag-definitions.h

 // Copyright 2011 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 82 matching lines @@
 
 //
 // Flags in all modes.
 //
 #define FLAG FLAG_FULL
 
 // Flags for experimental language features.
 DEFINE_bool(harmony_proxies, false, "enable harmony proxies")
 
 // Flags for experimental implementation features.
-DEFINE_bool(unbox_double_arrays, false, "automatically unbox arrays of doubles")
+DEFINE_bool(unbox_double_arrays, true, "automatically unbox arrays of doubles")
 
 // Flags for Crankshaft.
 #ifdef V8_TARGET_ARCH_MIPS
   DEFINE_bool(crankshaft, false, "use crankshaft")
 #else
   DEFINE_bool(crankshaft, true, "use crankshaft")
 #endif
 DEFINE_string(hydrogen_filter, "", "hydrogen use/trace filter")
 DEFINE_bool(use_hydrogen, true, "use generated hydrogen for compilation")
 DEFINE_bool(build_lithium, true, "use lithium chunk builder")
@@ skipping 291 matching lines @@
             "print name of functions for which code is generated")
 DEFINE_bool(print_source, false, "pretty print source code")
 DEFINE_bool(print_builtin_source, false,
             "pretty print source code for builtins")
 DEFINE_bool(print_ast, false, "print source AST")
 DEFINE_bool(print_builtin_ast, false, "print source AST for builtins")
 DEFINE_bool(print_json_ast, false, "print source AST as JSON")
 DEFINE_bool(print_builtin_json_ast, false,
             "print source AST for builtins as JSON")
 DEFINE_string(stop_at, "", "function name where to insert a breakpoint")
+DEFINE_bool(verify_stack_height, false, "verify stack height tracing on ia32")
 
 // compiler.cc
 DEFINE_bool(print_builtin_scopes, false, "print scopes for builtins")
 DEFINE_bool(print_scopes, false, "print scopes")
 
 // contexts.cc
 DEFINE_bool(trace_contexts, false, "trace contexts operations")
 
 // heap.cc
 DEFINE_bool(gc_greedy, false, "perform GC prior to some allocations")
@@ skipping 39 matching lines @@
 // Regexp
 DEFINE_bool(regexp_possessive_quantifier,
             false,
             "enable possessive quantifier syntax for testing")
 DEFINE_bool(trace_regexp_bytecodes, false, "trace regexp bytecode execution")
 DEFINE_bool(trace_regexp_assembler,
             false,
             "trace regexp macro assembler calls.")
 
 //
-// Logging and profiling only flags
+// Logging and profiling flags
 //
 #undef FLAG
-#ifdef ENABLE_LOGGING_AND_PROFILING
 #define FLAG FLAG_FULL
-#else
-#define FLAG FLAG_READONLY
-#endif
 
 // log.cc
 DEFINE_bool(log, false,
             "Minimal logging (no API, code, GC, suspect, or handles samples).")
 DEFINE_bool(log_all, false, "Log all events to the log file.")
 DEFINE_bool(log_runtime, false, "Activate runtime system %Log call.")
 DEFINE_bool(log_api, false, "Log API events to the log file.")
 DEFINE_bool(log_code, false,
             "Log code events to the log file without profiling.")
 DEFINE_bool(log_gc, false,
@@ skipping 11 matching lines @@
             " when profiler is active (implies --noprof_auto).")
 DEFINE_bool(prof_browser_mode, true,
             "Used with --prof, turns on browser-compatible mode for profiling.")
 DEFINE_bool(log_regexp, false, "Log regular expression execution.")
 DEFINE_bool(sliding_state_window, false,
             "Update sliding state window counters.")
 DEFINE_string(logfile, "v8.log", "Specify the name of the log file.")
 DEFINE_bool(ll_prof, false, "Enable low-level linux profiler.")
 
 //
-// Heap protection flags
-// Using heap protection requires ENABLE_LOGGING_AND_PROFILING as well.
-//
-#ifdef ENABLE_HEAP_PROTECTION
-#undef FLAG
-#define FLAG FLAG_FULL
-
-DEFINE_bool(protect_heap, false,
-            "Protect/unprotect V8's heap when leaving/entring the VM.")
-
-#endif
-
-//
 // Disassembler only flags
 //
 #undef FLAG
 #ifdef ENABLE_DISASSEMBLER
 #define FLAG FLAG_FULL
 #else
 #define FLAG FLAG_READONLY
 #endif
 
 // code-stubs.cc
@@ skipping 13 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