VM: Separate precompilation-specific code, make flags const.

runtime/vm/flag_list.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_FLAG_LIST_H_
 #define VM_FLAG_LIST_H_
 
 // List of all flags in the VM.
 // Flags can be one of three categories:
 // * P roduct flags: Can be set in any of the deployment modes, including in
 //   production.
 // * D ebug flags: Can only be set in debug VMs, which also have assertions
 //   enabled.
 // * R elease flags: Generally available flags except when building product.
-
-#define FLAG_LIST(P, R, D)                                                     \
+// * pre C ompile flags: Generally available flags except when building product
+//   or precompiled runtime.
+//
+// Usage:
+//   P(name, type, default_value, comment)
+//   D(name, type, default_value, comment)
+//   R(name, product_value, type, default_value, comment)
+//   C(name, precompiled_value, product_value, type, default_value, comment)
+#define FLAG_LIST(P, R, D, C)                                                  \
 R(dedup_instructions, true, bool, false,                                       \
   "Canonicalize instructions when precompiling.")                              \
 R(disable_alloc_stubs_after_gc, false, bool, false,                            \
   "Stress testing flag.")                                                      \
 R(disassemble, false, bool, false,                                             \
   "Disassemble dart code.")                                                    \
 R(disassemble_optimized, false, bool, false,                                   \
   "Disassemble optimized code.")                                               \
 R(dump_symbol_stats, false, bool, false,                                       \
   "Dump symbol table statistics")                                              \
 R(gc_at_alloc, false, bool, false,                                             \
   "GC at every allocation.")                                                   \
+P(getter_setter_ratio, int, 13,                                                \
+  "Ratio of getter/setter usage used for double field unboxing heuristics")    \
+P(guess_icdata_cid, bool, true,                                                \
+  "Artificially create type feedback for arithmetic etc. operations")          \
+C(lazy_dispatchers, false, true, bool, true,                                   \
+  "Generate dispatchers lazily")                                               \
+P(max_polymorphic_checks, int, 4,                                              \
+  "Maximum number of polymorphic check, otherwise it is megamorphic.")         \
+P(max_equality_polymorphic_checks, int, 32,                                    \
+    "Maximum number of polymorphic checks in equality operator,")              \
+P(merge_sin_cos, bool, false,                                                  \
+  "Merge sin/cos into sincos")                                                 \
 P(new_gen_ext_limit, int, 64,                                                  \
   "maximum total external size (MB) in new gen before triggering GC")          \
+C(polymorphic_with_deopt, false, true, bool, true,                             \
+    "Polymorphic calls with deoptimization / megamorphic call")                \
 R(pretenure_all, false, bool, false,                                           \
   "Global pretenuring (for testing).")                                         \
 P(pretenure_interval, int, 10,                                                 \
   "Back off pretenuring after this many cycles.")                              \
 P(pretenure_threshold, int, 98,                                                \
   "Trigger pretenuring when this many percent are promoted.")                  \
 R(profiler, false, bool, true,                                                 \
   "Enable the profiler.")                                                      \
 R(support_ast_printer, false, bool, true,                                      \
   "Support the AST printer.")                                                  \
 R(support_debugger, false, bool, true,                                         \
   "Support the debugger.")                                                     \
 R(support_disassembler, false, bool, true,                                     \
   "Support the disassembler.")                                                 \
 R(support_il_printer, false, bool, true,                                       \
   "Support the IL printer.")                                                   \
 R(support_service, false, bool, true,                                          \
   "Support the service protocol.")                                             \
 R(support_coverage, false, bool, true,                                         \
   "Support code coverage.")                                                    \
 R(support_timeline, false, bool, true,                                         \
   "Support timeline.")                                                         \
+D(trace_cha, bool, false,                                                      \
+  "Trace CHA operations")                                                      \
+D(trace_field_guards, bool, false,                                             \
+  "Trace changes in field's cids.")                                            \
 D(trace_handles, bool, false,                                                  \
   "Traces allocation of handles.")                                             \
+D(trace_optimization, bool, false,                                             \
+  "Print optimization details.");                                              \
 D(trace_zones, bool, false,                                                    \
   "Traces allocation sizes in the zone.")                                      \
+P(truncating_left_shift, bool, true,                                           \
+  "Optimize left shift to truncate if possible")                               \
+P(use_cha_deopt, bool, true,                                                   \

[rmacnak, 2016/02/19 23:46:04]

Constant false in precompilation, maybe a later CL.

[Florian Schneider, 2016/02/23 15:27:03]

Done.

+  "Use class hierarchy analysis even if it can cause deoptimization.")         \
 P(verbose_gc, bool, false,                                                     \
   "Enables verbose GC.")                                                       \
 P(verbose_gc_hdr, int, 40,                                                     \
   "Print verbose GC header interval.")                                         \
 R(verify_after_gc, false, bool, false,                                         \
   "Enables heap verification after GC.")                                       \
 R(verify_before_gc, false, bool, false,                                        \
   "Enables heap verification before GC.")                                      \
 
 
 #endif  // VM_FLAG_LIST_H_