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

runtime/vm/flow_graph_compiler_mips.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_MIPS.
 #if defined(TARGET_ARCH_MIPS)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "lib/error.h"
@@ skipping 1082 matching lines @@
 void ParallelMoveResolver::Exchange(Register reg, const Address& mem) {
   UNIMPLEMENTED();
 }
 
 
 void ParallelMoveResolver::Exchange(const Address& mem1, const Address& mem2) {
   UNIMPLEMENTED();
 }
 
 
+void ParallelMoveResolver::SpillScratch(Register reg) {
+  UNIMPLEMENTED();
+}
+
+
+void ParallelMoveResolver::RestoreScratch(Register reg) {
+  UNIMPLEMENTED();
+}
+
+
+void ParallelMoveResolver::SpillFpuScratch(FpuRegister reg) {
+  UNIMPLEMENTED();
+}
+
+
+void ParallelMoveResolver::RestoreFpuScratch(FpuRegister reg) {
+  UNIMPLEMENTED();
+}
+
+
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_MIPS