Optimize functions containing try-catch on ARM.

runtime/vm/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.
 
 #ifndef VM_ASSEMBLER_ARM_H_
 #define VM_ASSEMBLER_ARM_H_
 
 #ifndef VM_ASSEMBLER_H_
 #error Do not include assembler_arm.h directly; use assembler.h instead.
 #endif
@@ skipping 243 matching lines @@
     ShifterOperand so(rm, shift, shift_imm);
 
     if ((shift == LSL) && (shift_imm == 0)) {
       kind_ = IndexRegister;
     } else {
       kind_ = ScaledIndexRegister;
     }
     encoding_ = so.encoding() | am | (static_cast<uint32_t>(rn) << kRnShift);
   }
 
+  bool Equals(const Address& other) {
+    return (encoding_ == other.encoding_) && (kind_ == other.kind_);
+  }
+
   static bool CanHoldLoadOffset(LoadOperandType type,
                                 int32_t offset,
                                 int32_t* offset_mask);
   static bool CanHoldStoreOffset(StoreOperandType type,
                                  int32_t offset,
                                  int32_t* offset_mask);
 
  private:
   uint32_t encoding() const { return encoding_; }
 
@@ skipping 527 matching lines @@
                                   Register value,
                                   Label* no_update);
 
   DISALLOW_ALLOCATION();
   DISALLOW_COPY_AND_ASSIGN(Assembler);
 };
 
 }  // namespace dart
 
 #endif  // VM_ASSEMBLER_ARM_H_