Avoids vmovsr on ARM.

runtime/vm/simulator_arm.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 <setjmp.h>
 #include <stdlib.h>
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_ARM)
 
@@ skipping 2806 matching lines @@
       if ((instr->Bits(21, 3) == 0) && (instr->Bit(8) == 0)) {
         Register rd = instr->RdField();
         SRegister sn = instr->SnField();
         if (instr->Bit(20) == 0) {
           // Format(instr, "vmovs'cond 'sn, 'rd");
           set_sregister_bits(sn, get_register(rd));
         } else {
           // Format(instr, "vmovr'cond 'rd, 'sn");
           set_register(rd, get_sregister_bits(sn));
         }
+      } else if ((instr->Bits(22, 3) == 0) && (instr->Bit(20) == 0) &&
+                 (instr->Bit(8) == 1) && (instr->Bits(5, 2) == 0)) {
+        DRegister dn = instr->DnField();
+        Register rd = instr->RdField();
+        if (instr->Bit(21) == 0) {
+          // Format(instr, "vmovd'cond 'dd[0], 'rd");
+          SRegister sd = EvenSRegisterOf(dn);
+          set_sregister_bits(sd, get_register(rd));
+        } else {
+          // Format(instr, "vmovd'cond 'dd[1], 'rd");
+          SRegister sd = OddSRegisterOf(dn);
+          set_sregister_bits(sd, get_register(rd));
+        }
       } else if ((instr->Bits(20, 4) == 0xf) && (instr->Bit(8) == 0) &&
                  (instr->Bits(12, 4) == 0xf)) {
         // Format(instr, "vmstat'cond");
         n_flag_ = fp_n_flag_;
         z_flag_ = fp_z_flag_;
         c_flag_ = fp_c_flag_;
         v_flag_ = fp_v_flag_;
       } else {
         UnimplementedInstruction(instr);
       }
@@ skipping 885 matching lines @@
   set_register(kExceptionObjectReg, bit_cast<int32_t>(raw_exception));
   set_register(kStackTraceObjectReg, bit_cast<int32_t>(raw_stacktrace));
   buf->Longjmp();
 }
 
 }  // namespace dart
 
 #endif  // !defined(HOST_ARCH_ARM)
 
 #endif  // defined TARGET_ARCH_ARM