6709972: runThese failed with assert(false,"bad AD file")

Summary: guard AryEqNode construction with has_match_rule() test, set SpecialArraysEquals default off
Reviewed-by: kvn, never

src/share/vm/opto/library_call.cpp

@@ -823,6 +823,8 @@ bool LibraryCallKit::inline_string_compareTo() {
 //------------------------------inline_array_equals----------------------------
 bool LibraryCallKit::inline_array_equals() {
 
+  if (!Matcher::has_match_rule(Op_AryEq)) return false;
+
   _sp += 2;
   Node *argument2 = pop();
   Node *argument1 = pop();

src/share/vm/runtime/globals.hpp

@@ -460,7 +460,7 @@ class CommandLineFlags {
   develop(bool, SpecialStringIndexOf, true,                                 \
           "special version of string indexOf")                              \
                                                                             \
-  product(bool, SpecialArraysEquals, true,                                  \
+  product(bool, SpecialArraysEquals, false,                                 \
           "special version of Arrays.equals(char[],char[])")                \
                                                                             \
   develop(bool, TraceCallFixup, false,                                      \