[regexp] implement case-insensitive unicode regexps.

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

 // Copyright 2008-2009 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.
 
 #ifdef V8_INTERPRETED_REGEXP
 
 #include "src/regexp/regexp-macro-assembler-irregexp.h"
 
 #include "src/ast/ast.h"
 #include "src/regexp/bytecodes-irregexp.h"
@@ skipping 363 matching lines @@
                                                          Label* on_not_equal) {
   DCHECK(start_reg >= 0);
   DCHECK(start_reg <= kMaxRegister);
   Emit(read_backward ? BC_CHECK_NOT_BACK_REF_BACKWARD : BC_CHECK_NOT_BACK_REF,
        start_reg);
   EmitOrLink(on_not_equal);
 }
 
 
 void RegExpMacroAssemblerIrregexp::CheckNotBackReferenceIgnoreCase(
-    int start_reg, bool read_backward, Label* on_not_equal) {
+    int start_reg, bool read_backward, bool unicode, Label* on_not_equal) {
   DCHECK(start_reg >= 0);
   DCHECK(start_reg <= kMaxRegister);
-  Emit(read_backward ? BC_CHECK_NOT_BACK_REF_NO_CASE_BACKWARD
-                     : BC_CHECK_NOT_BACK_REF_NO_CASE,
+  Emit(read_backward ? (unicode ? BC_CHECK_NOT_BACK_REF_NO_CASE_UNICODE_BACKWARD
+                                : BC_CHECK_NOT_BACK_REF_NO_CASE_BACKWARD)
+                     : (unicode ? BC_CHECK_NOT_BACK_REF_NO_CASE_UNICODE
+                                : BC_CHECK_NOT_BACK_REF_NO_CASE),
        start_reg);
   EmitOrLink(on_not_equal);
 }
 
 
 void RegExpMacroAssemblerIrregexp::IfRegisterLT(int register_index,
                                                 int comparand,
                                                 Label* on_less_than) {
   DCHECK(register_index >= 0);
   DCHECK(register_index <= kMaxRegister);
@@ skipping 51 matching lines @@
   MemCopy(buffer_.start(), old_buffer.start(), old_buffer.length());
   if (old_buffer_was_our_own) {
     old_buffer.Dispose();
   }
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETED_REGEXP