Merge experimental/gc branch to the bleeding_edge.

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 235 matching lines @@
 DEFINE_int(gc_interval, -1, "garbage collect after <n> allocations")
 DEFINE_bool(trace_gc, false,
             "print one trace line following each garbage collection")
 DEFINE_bool(trace_gc_nvp, false,
             "print one detailed trace line in name=value format "
             "after each garbage collection")
 DEFINE_bool(print_cumulative_gc_stat, false,
             "print cumulative GC statistics in name=value format on exit")
 DEFINE_bool(trace_gc_verbose, false,
             "print more details following each garbage collection")
+DEFINE_bool(trace_fragmentation, false,
+            "report fragmentation for old pointer and data pages")
 DEFINE_bool(collect_maps, true,
             "garbage collect maps from which no objects can be reached")
-DEFINE_bool(flush_code, true,
+DEFINE_bool(flush_code, false,
             "flush code that we expect not to use again before full gc")
+DEFINE_bool(incremental_marking, true, "use incremental marking")
+DEFINE_bool(incremental_marking_steps, true, "do incremental marking steps")
+DEFINE_bool(trace_incremental_marking, false,
+            "trace progress of the incremental marking")
 
 // v8.cc
 DEFINE_bool(use_idle_notification, true,
             "Use idle notification to reduce memory footprint.")
 // ic.cc
 DEFINE_bool(use_ic, true, "use inline caching")
 
 #ifdef LIVE_OBJECT_LIST
 // liveobjectlist.cc
 DEFINE_string(lol_workdir, NULL, "path for lol temp files")
 DEFINE_bool(verify_lol, false, "perform debugging verification for lol")
 #endif
 
 // macro-assembler-ia32.cc
 DEFINE_bool(native_code_counters, false,
             "generate extra code for manipulating stats counters")
 
 // mark-compact.cc
 DEFINE_bool(always_compact, false, "Perform compaction on every full GC")
+DEFINE_bool(lazy_sweeping, true,
+            "Use lazy sweeping for old pointer and data spaces")
+DEFINE_bool(cleanup_caches_in_maps_at_gc, true,
+            "Flush code caches in maps during mark compact cycle.")
 DEFINE_bool(never_compact, false,
             "Never perform compaction on full GC - testing only")
 DEFINE_bool(cleanup_code_caches_at_gc, true,
             "Flush inline caches prior to mark compact collection and "
             "flush code caches in maps during mark compact cycle.")
 DEFINE_int(random_seed, 0,
            "Default seed for initializing random generator "
            "(0, the default, means to use system random).")
 
 DEFINE_bool(canonicalize_object_literal_maps, true,
@@ skipping 129 matching lines @@
 DEFINE_bool(gc_verbose, false, "print stuff during garbage collection")
 DEFINE_bool(heap_stats, false, "report heap statistics before and after GC")
 DEFINE_bool(code_stats, false, "report code statistics after GC")
 DEFINE_bool(verify_heap, false, "verify heap pointers before and after GC")
 DEFINE_bool(print_handles, false, "report handles after GC")
 DEFINE_bool(print_global_handles, false, "report global handles after GC")
 
 // ic.cc
 DEFINE_bool(trace_ic, false, "trace inline cache state transitions")
 
+// mark-compact.cc
+DEFINE_bool(force_marking_deque_overflows, false,
+            "force overflows of marking deque by reducing it's size "
+            "to 64 words")
+
 // objects.cc
 DEFINE_bool(trace_normalization,
             false,
             "prints when objects are turned into dictionaries.")
 
 // runtime.cc
 DEFINE_bool(trace_lazy, false, "trace lazy compilation")
 
 // serialize.cc
 DEFINE_bool(debug_serialization, false,
@@ skipping 80 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