Add VSUB{S,D} instructions to the integrated ARM assembler.

src/DartARM32/assembler_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.
 //
 // This is forked from Dart revision df52deea9f25690eb8b66c5995da92b70f7ac1fe
 // Please update the (git) revision if we merge changes from Dart.
 // https://code.google.com/p/dart/wiki/GettingTheSource
 
 #ifndef VM_ASSEMBLER_ARM_H_
 #define VM_ASSEMBLER_ARM_H_
@@ skipping 637 matching lines @@
              DRegister first, intptr_t count, Condition cond = AL);
 
 #if 0
   // Moved to Arm32::AssemblerARM32::vadds()
   void vadds(SRegister sd, SRegister sn, SRegister sm, Condition cond = AL);
   // Moved to Arm32::AssemblerARM32::vaddd()
   void vaddd(DRegister dd, DRegister dn, DRegister dm, Condition cond = AL);
 #endif
   void vaddqi(OperandSize sz, QRegister qd, QRegister qn, QRegister qm);
   void vaddqs(QRegister qd, QRegister qn, QRegister qm);
+#if 0
+  // Moved to Arm32::AssemblerARM32::vsubs()
   void vsubs(SRegister sd, SRegister sn, SRegister sm, Condition cond = AL);
+  // Moved to Arm32::AssemblerARM32::vsubd()
   void vsubd(DRegister dd, DRegister dn, DRegister dm, Condition cond = AL);
+#endif
   void vsubqi(OperandSize sz, QRegister qd, QRegister qn, QRegister qm);
   void vsubqs(QRegister qd, QRegister qn, QRegister qm);
   void vmuls(SRegister sd, SRegister sn, SRegister sm, Condition cond = AL);
   void vmuld(DRegister dd, DRegister dn, DRegister dm, Condition cond = AL);
   void vmulqi(OperandSize sz, QRegister qd, QRegister qn, QRegister qm);
   void vmulqs(QRegister qd, QRegister qn, QRegister qm);
   void vshlqi(OperandSize sz, QRegister qd, QRegister qm, QRegister qn);
   void vshlqu(OperandSize sz, QRegister qd, QRegister qm, QRegister qn);
   void vmlas(SRegister sd, SRegister sn, SRegister sm, Condition cond = AL);
   void vmlad(DRegister dd, DRegister dn, DRegister dm, Condition cond = AL);
@@ skipping 664 matching lines @@
   // ARM32::AssemblerARM:rbit().
 #endif
 
   DISALLOW_ALLOCATION();
   DISALLOW_COPY_AND_ASSIGN(Assembler);
 };
 
 }  // namespace dart
 
 #endif  // VM_ASSEMBLER_ARM_H_