ARM: Use the shifter operand to merge in previous shift instructions.

src/arm/assembler-arm.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // All Rights Reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions
 // are met:
 //
 // - Redistributions of source code must retain the above copyright notice,
 // this list of conditions and the following disclaimer.
 //
@@ skipping 1607 matching lines @@
   friend class BlockConstPoolScope;
   friend class FrameAndConstantPoolScope;
   friend class ConstantPoolUnavailableScope;
 
   PositionsRecorder positions_recorder_;
   friend class PositionsRecorder;
   friend class EnsureSpace;
 };
 
 
+bool fits_shifter(uint32_t imm32, uint32_t* rotate_imm,
+                  uint32_t* immed_8, Instr* instr);
+
+
 class EnsureSpace BASE_EMBEDDED {
  public:
   explicit EnsureSpace(Assembler* assembler) {
     assembler->CheckBuffer();
   }
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_ASSEMBLER_ARM_H_