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

runtime/vm/flow_graph_compiler_arm64.cc

 // Copyright (c) 2014, 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_ARM64.
 #if defined(TARGET_ARCH_ARM64)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/ast_printer.h"
@@ skipping 33 matching lines @@
 bool FlowGraphCompiler::SupportsUnboxedMints() {
   return false;
 }
 
 
 bool FlowGraphCompiler::SupportsUnboxedSimd128() {
   return FLAG_enable_simd_inline;
 }
 
 
-bool FlowGraphCompiler::SupportsSinCos() {
-  return false;
-}
-
-
 bool FlowGraphCompiler::CanConvertUnboxedMintToDouble() {
   // ARM does not have a short instruction sequence for converting int64 to
   // double.
   return false;
 }
 
 
 bool FlowGraphCompiler::SupportsHardwareDivision() {
   return true;
 }
@@ skipping 1786 matching lines @@
 void ParallelMoveResolver::RestoreFpuScratch(FpuRegister reg) {
   __ PopDouble(reg);
 }
 
 
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM64