Use GPRs for mints

runtime/vm/deopt_instructions.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_DEOPT_INSTRUCTIONS_H_
 #define VM_DEOPT_INSTRUCTIONS_H_
 
 #include "vm/allocation.h"
 #include "vm/assembler.h"
 #include "vm/code_generator.h"
@@ skipping 198 matching lines @@
 // Represents one deopt instruction, e.g, setup return address, store object,
 // store register, etc. The target is defined by instruction's position in
 // the deopt-info array.
 class DeoptInstr : public ZoneAllocated {
  public:
   enum Kind {
     kRetAddress,
     kConstant,
     kRegister,
     kFpuRegister,
-    kInt64FpuRegister,
+    kInt64RegisterPair,
     kFloat32x4FpuRegister,
     kFloat64x2FpuRegister,
     kInt32x4FpuRegister,
     kStackSlot,
     kDoubleStackSlot,
     kInt64StackSlot,
+    kInt64StackSlotPair,
     kFloat32x4StackSlot,
     kFloat64x2StackSlot,
     kInt32x4StackSlot,
+    kInt64StackSlotRegister,
     kPcMarker,
     kPp,
     kCallerFp,
     kCallerPp,
     kCallerPc,
     kSuffix,
     kMaterializedObjectRef,
     kMaterializeObject
   };
 
@@ skipping 143 matching lines @@
                        DeoptInfo* info,
                        Smi* reason);
 
  private:
   static const intptr_t kEntrySize = 3;
 };
 
 }  // namespace dart
 
 #endif  // VM_DEOPT_INSTRUCTIONS_H_