Fix MIPS build broken by r12735 'Allow unaligned accesses for ARMv7'.

src/mips/regexp-macro-assembler-mips.cc

 // Copyright 2012 the V8 project authors. 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.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1085 matching lines @@
 }
 
 
 void RegExpMacroAssemblerMIPS::WriteStackPointerToRegister(int reg) {
   __ lw(a1, MemOperand(frame_pointer(), kStackHighEnd));
   __ Subu(a0, backtrack_stackpointer(), a1);
   __ sw(a0, register_location(reg));
 }
 
 
+bool RegExpMacroAssemblerMIPS::CanReadUnaligned() {
+  return false;
+}
+
+
 // Private methods:
 
 void RegExpMacroAssemblerMIPS::CallCheckStackGuardState(Register scratch) {
   static const int num_arguments = 3;
   __ PrepareCallCFunction(num_arguments, scratch);
   __ mov(a2, frame_pointer());
   // Code* of self.
   __ li(a1, Operand(masm_->CodeObject()), CONSTANT_SIZE);
   // a0 becomes return address pointer.
   ExternalReference stack_guard_check =
@@ skipping 257 matching lines @@
 }
 
 
 #undef __
 
 #endif  // V8_INTERPRETED_REGEXP
 
 }}  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS