Merge experimental/a64 to bleeding_edge.

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 559 matching lines @@
            "Default seed for initializing random generator "
            "(0, the default, means to use system random).")
 
 // objects.cc
 DEFINE_bool(use_verbose_printer, true, "allows verbose printing")
 
 // parser.cc
 DEFINE_bool(allow_natives_syntax, false, "allow natives syntax")
 DEFINE_bool(trace_parse, false, "trace parsing and preparsing")
 
-// simulator-arm.cc and simulator-mips.cc
+// simulator-arm.cc, simulator-a64.cc and simulator-mips.cc
 DEFINE_bool(trace_sim, false, "Trace simulator execution")
 DEFINE_bool(check_icache, false,
             "Check icache flushes in ARM and MIPS simulator")
 DEFINE_int(stop_sim_at, 0, "Simulator stop after x number of instructions")
+#ifdef V8_TARGET_ARCH_A64
+DEFINE_int(sim_stack_alignment, 16,
+           "Stack alignment in bytes in simulator. This must be a power of two "
+           "and it must be at least 16. 16 is default.")
+#else
 DEFINE_int(sim_stack_alignment, 8,
            "Stack alingment in bytes in simulator (4 or 8, 8 is default)")
+#endif
+DEFINE_int(sim_stack_size, 2 * MB / KB,
+           "Stack size of the A64 simulator in kBytes (default is 2 MB)")
+DEFINE_bool(log_regs_modified, true,
+            "When logging register values, only print modified registers.")
+DEFINE_bool(log_colour, true,
+            "When logging, try to use coloured output.")
+DEFINE_bool(ignore_asm_unimplemented_break, false,
+            "Don't break for ASM_UNIMPLEMENTED_BREAK macros.")
+DEFINE_bool(trace_sim_messages, false,
+            "Trace simulator debug messages. Implied by --trace-sim.")
 
 // isolate.cc
 DEFINE_bool(stack_trace_on_illegal, false,
             "print stack trace when an illegal exception is thrown")
 DEFINE_bool(abort_on_uncaught_exception, false,
             "abort program (dump core) when an uncaught exception is thrown")
 DEFINE_bool(randomize_hashes, true,
             "randomize hashes to avoid predictable hash collisions "
             "(with snapshots this option cannot override the baked-in seed)")
 DEFINE_int(hash_seed, 0,
@@ skipping 190 matching lines @@
             "Enable perf linux profiler (basic support).")
 DEFINE_bool(perf_jit_prof, false,
             "Enable perf linux profiler (experimental annotate support).")
 DEFINE_string(gc_fake_mmap, "/tmp/__v8_gc__",
               "Specify the name of the file for fake gc mmap used in ll_prof")
 DEFINE_bool(log_internal_timer_events, false, "Time internal events.")
 DEFINE_bool(log_timer_events, false,
             "Time events including external callbacks.")
 DEFINE_implication(log_timer_events, log_internal_timer_events)
 DEFINE_implication(log_internal_timer_events, prof)
+DEFINE_bool(log_instruction_stats, false, "Log AArch64 instruction statistics.")
+DEFINE_string(log_instruction_file, "a64_inst.csv",
+              "AArch64 instruction statistics log file.")
+DEFINE_int(log_instruction_period, 1 << 22,
+           "AArch64 instruction statistics logging period.")
 
 DEFINE_bool(redirect_code_traces, false,
             "output deopt information and disassembly into file "
             "code-<pid>-<isolate id>.asm")
 DEFINE_string(redirect_code_traces_to, NULL,
             "output deopt information and disassembly into the given file")
 
 //
 // Disassembler only flags
 //
@@ skipping 82 matching lines @@
 #undef DEFINE_ALIAS_float
 #undef DEFINE_ALIAS_args
 
 #undef FLAG_MODE_DECLARE
 #undef FLAG_MODE_DEFINE
 #undef FLAG_MODE_DEFINE_DEFAULTS
 #undef FLAG_MODE_META
 #undef FLAG_MODE_DEFINE_IMPLICATIONS
 
 #undef COMMA