PPC: Enable unaligned access and clean up the use of UNALIGNED_ACCESSES

src/regexp/ppc/regexp-macro-assembler-ppc.h

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_REGEXP_PPC_REGEXP_MACRO_ASSEMBLER_PPC_H_
 #define V8_REGEXP_PPC_REGEXP_MACRO_ASSEMBLER_PPC_H_
 
 #include "src/macro-assembler.h"
 #include "src/ppc/assembler-ppc.h"
 #include "src/ppc/frames-ppc.h"
@@ skipping 60 matching lines @@
   virtual void PushRegister(int register_index,
                             StackCheckFlag check_stack_limit);
   virtual void ReadCurrentPositionFromRegister(int reg);
   virtual void ReadStackPointerFromRegister(int reg);
   virtual void SetCurrentPositionFromEnd(int by);
   virtual void SetRegister(int register_index, int to);
   virtual bool Succeed();
   virtual void WriteCurrentPositionToRegister(int reg, int cp_offset);
   virtual void ClearRegisters(int reg_from, int reg_to);
   virtual void WriteStackPointerToRegister(int reg);
-  virtual bool CanReadUnaligned();
 
   // Called from RegExp if the stack-guard is triggered.
   // If the code object is relocated, the return address is fixed before
   // returning.
   static int CheckStackGuardState(Address* return_address, Code* re_code,
                                   Address re_frame);
 
  private:
   // Offsets from frame_pointer() of function parameters and stored registers.
   static const int kFramePointer = 0;
@@ skipping 115 matching lines @@
 
 // Set of non-volatile registers saved/restored by generated regexp code.
 const RegList kRegExpCalleeSaved =
     1 << 25 | 1 << 26 | 1 << 27 | 1 << 28 | 1 << 29 | 1 << 30 | 1 << 31;
 
 #endif  // V8_INTERPRETED_REGEXP
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_REGEXP_PPC_REGEXP_MACRO_ASSEMBLER_PPC_H_