Allow unaligned accesses for ARMv7.

src/regexp-macro-assembler.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 49 matching lines @@
 NativeRegExpMacroAssembler::NativeRegExpMacroAssembler(Zone* zone)
     : RegExpMacroAssembler(zone) {
 }
 
 
 NativeRegExpMacroAssembler::~NativeRegExpMacroAssembler() {
 }
 
 
 bool NativeRegExpMacroAssembler::CanReadUnaligned() {
-#ifdef V8_TARGET_CAN_READ_UNALIGNED
-  return !slow_safe();
-#else
-  return false;
-#endif
+  return FLAG_enable_unaligned_accesses && !slow_safe();
 }
 
 const byte* NativeRegExpMacroAssembler::StringCharacterPosition(
     String* subject,
     int start_index) {
   // Not just flat, but ultra flat.
   ASSERT(subject->IsExternalString() || subject->IsSeqString());
   ASSERT(start_index >= 0);
   ASSERT(start_index <= subject->length());
   if (subject->IsAsciiRepresentation()) {
@@ skipping 182 matching lines @@
     return NULL;
   }
   *stack_base = new_stack_base;
   intptr_t stack_content_size = old_stack_base - stack_pointer;
   return new_stack_base - stack_content_size;
 }
 
 #endif  // V8_INTERPRETED_REGEXP
 
 } }  // namespace v8::internal