Removes ARM mrc instruction.

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 536 matching lines @@
             ((Bits(4, 4) & 0xd) == 1));
   }
 
   // Test for VFP load and store instructions of type 6.
   inline bool IsVFPLoadStore() const {
     ASSERT(ConditionField() != kSpecialCondition);
     ASSERT(TypeField() == 6);
     return ((Bits(20, 5) & 0x12) == 0x10) && (Bits(9, 3) == 5);
   }
 
-  // Only handle mrc of the id_isar0 register.
-  inline bool IsMrcIdIsar0() const {
-    ASSERT(ConditionField() != kSpecialCondition);
-    ASSERT(TypeField() == 7);
-    return (Bits(21, 3) == 0) && (Bits(16, 4) == 0) &&
-           (Bits(8, 4) == 0xf) && (Bits(5, 3) == 0) &&
-           (Bits(0, 4) == 2);
-  }
-
   // Test for VFP multiple load and store instructions of type 6.
   inline bool IsVFPMultipleLoadStore() const {
     ASSERT(ConditionField() != kSpecialCondition);
     ASSERT(TypeField() == 6);
     int32_t puw = (PUField() << 1) | Bit(21);  // don't care about D bit
     return (Bits(9, 3) == 5) && ((puw == 2) || (puw == 3) || (puw == 5));
   }
 
   // Special accessors that test for existence of a value.
   inline bool HasS()    const { return SField() == 1; }
@@ skipping 11 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_