[regexp] Port remaining JS functions in regexp.js

src/builtins/builtins.h

Index: src/builtins/builtins.h
diff --git a/src/builtins/builtins.h b/src/builtins/builtins.h
index 088732e8f90f1fd5320083b88d3eb7e7543892e2..7bb36d2577cba0d32c98e2a6de89af9680438869 100644
--- a/src/builtins/builtins.h
+++ b/src/builtins/builtins.h
@@ -575,8 +575,12 @@ namespace internal {
   CPP(RegExpCapture8Getter)                                                   \
   CPP(RegExpCapture9Getter)                                                   \
   CPP(RegExpConstructor)                                                      \
+  CPP(RegExpInitialize)                                                       \
+  TFJ(RegExpInternalMatch, 3)                                                 \
+  TFJ(RegExpInternalReplace, 4)                                               \

[Yang, 2016/10/13 11:51:11]

I would have implemented internal match and replace in C++ first, since we only
use that in i18n? But I guess since you already have that in TF we can keep it
this way.

[jgruber, 2016/10/13 12:02:38]

It's explained in the commit message why these two are TurboFan stubs. Plus,
both of them are pretty trivial so we don't lose much on readability.

   CPP(RegExpInputGetter)                                                      \
   CPP(RegExpInputSetter)                                                      \
+  CPP(RegExpIsRegExp)                                                         \
   CPP(RegExpLastMatchGetter)                                                  \
   CPP(RegExpLastParenGetter)                                                  \
   CPP(RegExpLeftContextGetter)                                                \