Limit code size generated for very large regexps

src/jsregexp.h

Index: src/jsregexp.h
diff --git a/src/jsregexp.h b/src/jsregexp.h
index c65adea4c5cf04d6e92f02642b4eb7ee44fa36df..c81ccb21d8f845935fedbd7cd0ff7a5fdf01790a 100644
--- a/src/jsregexp.h
+++ b/src/jsregexp.h
@@ -213,7 +213,8 @@ class RegExpImpl {
   // total regexp code compiled including code that has subsequently been freed
   // and the total executable memory at any point.
   static const int kRegExpExecutableMemoryLimit = 16 * MB;
-  static const int kRegWxpCompiledLimit = 1 * MB;
+  static const int kRegExpCompiledLimit = 1 * MB;
+  static const int kRegExpTooLargeToOptimize = 10 * KB;
 
  private:
   static bool CompileIrregexp(Handle<JSRegExp> re,
@@ -1666,6 +1667,8 @@ class RegExpEngine: public AllStatic {
                                    Handle<String> sample_subject,
                                    bool is_one_byte, Zone* zone);
 
+  static bool TooMuchRegExpCode(Handle<String> pattern);
+
   static void DotPrint(const char* label, RegExpNode* node, bool ignore_case);
 };