A64: Synchronize with r15204.

src/flag-definitions.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 160 matching lines @@
 DEFINE_implication(harmony_typed_arrays, harmony_array_buffer)
 DEFINE_bool(harmony_generators, false, "enable harmony generators")
 DEFINE_bool(harmony_iteration, false, "enable harmony iteration (for-of)")
 DEFINE_bool(harmony, false, "enable all harmony features (except typeof)")
 DEFINE_implication(harmony, harmony_scoping)
 DEFINE_implication(harmony, harmony_modules)
 DEFINE_implication(harmony, harmony_symbols)
 DEFINE_implication(harmony, harmony_proxies)
 DEFINE_implication(harmony, harmony_collections)
 DEFINE_implication(harmony, harmony_observation)
-// TODO(wingo): Re-enable when GC bug that appeared in r15060 is gone.
-// DEFINE_implication(harmony, harmony_generators)
+DEFINE_implication(harmony, harmony_generators)
 DEFINE_implication(harmony, harmony_iteration)
 DEFINE_implication(harmony_modules, harmony_scoping)
 DEFINE_implication(harmony_observation, harmony_collections)
 // TODO[dslomov] add harmony => harmony_typed_arrays
 
 // Flags for experimental implementation features.
 DEFINE_bool(packed_arrays, true, "optimizes arrays that have no holes")
 DEFINE_bool(smi_only_arrays, true, "tracks arrays with only smi values")
 DEFINE_bool(compiled_transitions, false, "use optimizing compiler to "
             "generate array elements transition stubs")
@@ skipping 91 matching lines @@
 DEFINE_bool(inline_arguments, true, "inline functions with arguments object")
 DEFINE_bool(inline_accessors, true, "inline JavaScript accessors")
 DEFINE_int(loop_weight, 1, "loop weight for representation inference")
 
 DEFINE_bool(optimize_for_in, true,
             "optimize functions containing for-in loops")
 DEFINE_bool(opt_safe_uint32_operations, true,
             "allow uint32 values on optimize frames if they are used only in "
             "safe operations")
 
-DEFINE_bool(parallel_recompilation, false,
+DEFINE_bool(parallel_recompilation, true,
             "optimizing hot functions asynchronously on a separate thread")
 DEFINE_bool(trace_parallel_recompilation, false, "track parallel recompilation")
-DEFINE_int(parallel_recompilation_queue_length, 3,
+DEFINE_int(parallel_recompilation_queue_length, 8,
            "the length of the parallel compilation queue")
 DEFINE_int(parallel_recompilation_delay, 0,
            "artificial compilation delay in ms")
 DEFINE_bool(omit_prototype_checks_for_leaf_maps, true,
             "do not emit prototype checks if all prototypes have leaf maps, "
             "deoptimize the optimized code if the layout of the maps changes.")
 
 // Experimental profiler changes.
 DEFINE_bool(experimental_profiler, true, "enable all profiler experiments")
 DEFINE_bool(watch_ic_patching, false, "profiler considers IC stability")
 DEFINE_int(frame_count, 1, "number of stack frames inspected by the profiler")
 DEFINE_bool(self_optimization, false,
             "primitive functions trigger their own optimization")
 DEFINE_bool(direct_self_opt, false,
             "call recompile stub directly when self-optimizing")
 DEFINE_bool(retry_self_opt, false, "re-try self-optimization if it failed")
 DEFINE_bool(interrupt_at_exit, false,
             "insert an interrupt check at function exit")
 DEFINE_bool(weighted_back_edges, false,
             "weight back edges by jump distance for interrupt triggering")
            // 0x1700 fits in the immediate field of an ARM instruction.
 DEFINE_int(interrupt_budget, 0x1700,
            "execution budget before interrupt is triggered")
-DEFINE_int(type_info_threshold, 15,
+DEFINE_int(type_info_threshold, 25,
            "percentage of ICs that must have type info to allow optimization")
 DEFINE_int(self_opt_count, 130, "call count before self-optimization")
 
 DEFINE_implication(experimental_profiler, watch_ic_patching)
 DEFINE_implication(experimental_profiler, self_optimization)
 // Not implying direct_self_opt here because it seems to be a bad idea.
 DEFINE_implication(experimental_profiler, retry_self_opt)
 DEFINE_implication(experimental_profiler, interrupt_at_exit)
 DEFINE_implication(experimental_profiler, weighted_back_edges)
 
@@ skipping 486 matching lines @@
 #undef DEFINE_bool
 #undef DEFINE_int
 #undef DEFINE_string
 #undef DEFINE_implication
 
 #undef FLAG_MODE_DECLARE
 #undef FLAG_MODE_DEFINE
 #undef FLAG_MODE_DEFINE_DEFAULTS
 #undef FLAG_MODE_META
 #undef FLAG_MODE_DEFINE_IMPLICATIONS