VM: Move representation selection code out of the flow graph optimizer.

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 52 matching lines @@
 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;
 }
 
 
 void FlowGraphCompiler::EnterIntrinsicMode() {
   ASSERT(!intrinsic_mode());
   intrinsic_mode_ = true;
   ASSERT(!assembler()->constant_pool_allowed());
 }
@@ skipping 1793 matching lines @@
 void ParallelMoveResolver::RestoreFpuScratch(FpuRegister reg) {
   __ PopDouble(reg);
 }
 
 
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM64