From: feng@chromium.org <feng@chromium.org@ce2b1a6d-e550-0410-aec6-3dcde31c8c00>
Date: Tue, 28 Oct 2008 03:39:17 +0000 (+0000)
Subject: Fast check undefined in EQUALS.
X-Git-Tag: upstream/4.7.83~25102
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1706231d789e45dbbe1c492974bd14888ef1c123;p=platform%2Fupstream%2Fv8.git

Fast check undefined in EQUALS.

Review URL: http://codereview.chromium.org/7979

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@614 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
---

diff --git a/src/runtime.js b/src/runtime.js
index 1355356a0..5e73d4100 100644
--- a/src/runtime.js
+++ b/src/runtime.js
@@ -78,12 +78,15 @@ function EQUALS(y) {
       // NOTE: This checks for both null and undefined.
       return (y == null) ? 0 : 1;
     } else {
+      // x is not a number, boolean, null or undefined.
+      if (y == null) return 1;  // not equal
       if (IS_OBJECT(y)) {
         return %_ObjectEquals(x, y) ? 0 : 1;
       }
       if (IS_FUNCTION(y)) {
         return %_ObjectEquals(x, y) ? 0 : 1;
       }
+
       x = %ToPrimitive(x, NO_HINT);
     }
   }