VM: Remove unused optimization of merging of sin/cos.

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 RUNTIME_VM_FLAG_LIST_H_
 #define RUNTIME_VM_FLAG_LIST_H_
 
 // Don't use USING_DBC outside of this file.
 #if defined(TARGET_ARCH_DBC)
 #define USING_DBC true
@@ skipping 85 matching lines @@
     "Load deferred libraries eagerly.")                                        \
   R(log_marker_tasks, false, bool, false,                                      \
     "Log debugging information for old gen GC marking tasks.")                 \
   R(marker_tasks, USING_MULTICORE ? 2 : 0, int, USING_MULTICORE ? 2 : 0,       \
     "The number of tasks to spawn during old gen GC marking (0 means "         \
     "perform all marking on main thread).")                                    \
   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")        \
   P(new_gen_semi_max_size, int, (kWordSize <= 4) ? 16 : 32,                    \
     "Max size of new gen semi space in MB")                                    \
   P(optimization_counter_threshold, int, 30000,                                \
     "Function's usage-counter value before it is optimized, -1 means never")   \
   P(old_gen_heap_size, int, (kWordSize <= 4) ? 1536 : 0,                       \
     "Max size of old gen heap size in MB, or 0 for unlimited,"                 \
     "e.g: --old_gen_heap_size=1024 allows up to 1024MB old gen heap")          \
   R(pause_isolates_on_start, false, bool, false,                               \
@@ skipping 43 matching lines @@
   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.")                                    \
   D(verify_gc_contains, bool, false,                                           \
     "Enables verification of address contains during GC.")                     \
   D(verify_on_transition, bool, false, "Verify on dart <==> VM.")
 
 #endif  // RUNTIME_VM_FLAG_LIST_H_