From ad0f8ff76cb6c698e75dbde6011a9251d5efd13b Mon Sep 17 00:00:00 2001
From: ko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 26 May 2017 05:26:57 +0000
Subject: [PATCH] Symbol support for opt_eq_func.

* vm_insnhelper.c (opt_eq_func): optimize for symbol comparison.
  [Bug #13330] [fix GH-1540]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58895 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 vm_insnhelper.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/vm_insnhelper.c b/vm_insnhelper.c
index 4c25ba6e8d..f0832eac74 100644
--- a/vm_insnhelper.c
+++ b/vm_insnhelper.c
@@ -1325,6 +1325,11 @@ opt_eq_func(VALUE recv, VALUE obj, CALL_INFO ci, CALL_CACHE cc)
 	    return rb_str_equal(recv, obj);
 	}
     }
+    else if (SYMBOL_P(recv) && SYMBOL_P(obj)) {
+	if (EQ_UNREDEFINED_P(SYMBOL)) {
+	    return (recv == obj) ? Qtrue : Qfalse;
+	}
+    }
 
     {
 	vm_search_method(ci, cc, recv);