[regexp] implement case-insensitive unicode regexps.

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

Index: src/regexp/regexp-macro-assembler-tracer.cc
diff --git a/src/regexp/regexp-macro-assembler-tracer.cc b/src/regexp/regexp-macro-assembler-tracer.cc
index 5301ead69bdf02af8abc80639c10d8f3f87cbbed..947dd3586cf5856facd6b2fb877ca7b6a329d71d 100644
--- a/src/regexp/regexp-macro-assembler-tracer.cc
+++ b/src/regexp/regexp-macro-assembler-tracer.cc
@@ -360,11 +360,11 @@ void RegExpMacroAssemblerTracer::CheckNotBackReference(int start_reg,
 
 
 void RegExpMacroAssemblerTracer::CheckNotBackReferenceIgnoreCase(
-    int start_reg, bool read_backward, Label* on_no_match) {
+    int start_reg, bool read_backward, bool unicode, Label* on_no_match) {
   PrintF(" CheckNotBackReferenceIgnoreCase(register=%d, %s, label[%08x]);\n",

[erikcorry, 2016/01/25 10:26:37]

This printf should print whether it is in unicode mode.

[Yang, 2016/01/25 11:46:37]

Done.

          start_reg, read_backward ? "backward" : "forward",
          LabelToInt(on_no_match));
-  assembler_->CheckNotBackReferenceIgnoreCase(start_reg, read_backward,
+  assembler_->CheckNotBackReferenceIgnoreCase(start_reg, read_backward, unicode,
                                               on_no_match);
 }