For trigonometric functions call to C-libraries: they are faster than x87 operations (3% on Box2D).

runtime/vm/flow_graph_compiler_arm.cc

 // Copyright (c) 2013, 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.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_ARM.
 #if defined(TARGET_ARCH_ARM)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/ast_printer.h"
@@ skipping 25 matching lines @@
     ASSERT(!block_info_[i]->jump_label()->IsLinked());
   }
 }
 
 
 bool FlowGraphCompiler::SupportsUnboxedMints() {
   return false;
 }
 
 
-// TODO(srdjan): Enable by calling C-functions.
-bool FlowGraphCompiler::SupportsInlinedTrigonometrics() {
-  return false;
-}
-
-
 RawDeoptInfo* CompilerDeoptInfo::CreateDeoptInfo(FlowGraphCompiler* compiler,
                                                  DeoptInfoBuilder* builder) {
   if (deopt_env_ == NULL) return DeoptInfo::null();
 
   intptr_t stack_height = compiler->StackSize();
   AllocateIncomingParametersRecursive(deopt_env_, &stack_height);
 
   intptr_t slot_ix = 0;
   Environment* current = deopt_env_;
 
@@ skipping 1814 matching lines @@
   DRegister dreg = EvenDRegisterOf(reg);
   __ vldrd(dreg, Address(SP, kDoubleSize, Address::PostIndex));
 }
 
 
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM