Fix bug in ParallelMoveResolver::EmitSwap: implement swaps of FPU spill slots.

runtime/vm/constants_arm.h

 // 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.
 
 #ifndef VM_CONSTANTS_ARM_H_
 #define VM_CONSTANTS_ARM_H_
 
 #include "platform/assert.h"
 
 namespace dart {
@@ skipping 115 matching lines @@
 #endif
   kNumberOfOverlappingDRegisters = 16,
   kNoDRegister = -1,
 };
 
 
 // Architecture independent aliases.
 typedef DRegister FpuRegister;
 const FpuRegister FpuTMP = D0;
 const int kNumberOfFpuRegisters = kNumberOfDRegisters;
+const FpuRegister kNoFpuRegister = kNoDRegister;
 
 
 // Register aliases.
 const Register TMP = IP;  // Used as scratch register by assembler.
 const Register CTX = R9;  // Caches current context in generated code.
 const Register PP = R10;  // Caches object pool pointer in generated code.
 const Register SPREG = SP;  // Stack pointer register.
 const Register FPREG = FP;  // Frame pointer register.
 
 
@@ skipping 417 matching lines @@
   static Instr* At(uword pc) { return reinterpret_cast<Instr*>(pc); }
 
  private:
   DISALLOW_ALLOCATION();
   DISALLOW_IMPLICIT_CONSTRUCTORS(Instr);
 };
 
 }  // namespace dart
 
 #endif  // VM_CONSTANTS_ARM_H_