gistfile1.diff

diff --git a/src/org/jruby/RubyArray.java b/src/org/jruby/RubyArray.java
index 66f7982..4ec0bb2 100644
--- a/src/org/jruby/RubyArray.java
+++ b/src/org/jruby/RubyArray.java
@@ -67,6 +67,7 @@ import org.jruby.runtime.ThreadContext;
 import static org.jruby.runtime.Visibility.*;
 import static org.jruby.CompatVersion.*;
 import org.jruby.runtime.builtin.IRubyObject;
+import org.jruby.runtime.callsite.CacheEntry;
 import org.jruby.runtime.marshal.MarshalStream;
 import org.jruby.runtime.marshal.UnmarshalStream;
 import org.jruby.util.ByteList;
@@ -2420,12 +2421,13 @@ public class RubyArray extends RubyObject implements List {
     public IRubyObject delete(ThreadContext context, IRubyObject item, Block block) {
         int i2 = 0;
 
+        final CacheEntry[] cache = new CacheEntry[1];
         Ruby runtime = context.getRuntime();
         for (int i1 = 0; i1 < realLength; i1++) {
             // Do not coarsen the "safe" check, since it will misinterpret AIOOBE from equalInternal
             // See JRUBY-5434
             IRubyObject e = safeArrayRef(values, begin + i1);
-            if (equalInternal(context, e, item)) continue;
+            if (equalInternal(context, e, item, cache)) continue;
             if (i1 != i2) store(i2, e);
             i2++;
         }
diff --git a/src/org/jruby/RubyObject.java b/src/org/jruby/RubyObject.java
index ced16b9..290791d 100644
--- a/src/org/jruby/RubyObject.java
+++ b/src/org/jruby/RubyObject.java
@@ -57,6 +57,7 @@ import org.jruby.runtime.ThreadContext;
 import static org.jruby.runtime.Visibility.*;
 import static org.jruby.CompatVersion.*;
 import org.jruby.runtime.builtin.IRubyObject;
+import org.jruby.runtime.callsite.CacheEntry;
 import org.jruby.runtime.marshal.DataType;
 
 /**
@@ -356,6 +357,25 @@ public class RubyObject extends RubyBasicObject {
         }
     }
 
+    protected static boolean equalInternal(final ThreadContext context, final IRubyObject a, final IRubyObject b, final CacheEntry[] cache){
+        if (a == b) {
+            return true;
+        } else if (a instanceof RubySymbol) {
+            return false;
+        } else if (a instanceof RubyFixnum && b instanceof RubyFixnum) {
+            return ((RubyFixnum)a).fastEqual((RubyFixnum)b);
+        } else if (a instanceof RubyFloat && b instanceof RubyFloat) {
+            return ((RubyFloat)a).fastEqual((RubyFloat)b);
+        } else {
+            RubyClass metaclass = metaclass(a);
+            if (cache[0] == null || cache[0].token != a.getMetaClass().getCacheToken()) {
+                cache[0] = metaclass.searchWithCache("==");
+            }
+
+            return cache[0].method.call(context, a, metaclass, "==", b).isTrue();
+        }
+    }
+
     /**
      * Helper method for checking equality, first using Java identity
      * equality, and then calling the "eql?" method.