From d15bbcd442ca488df7740a12d674669172499fa7 Mon Sep 17 00:00:00 2001
From: Stefan Behnel <scoder@users.berlios.de>
Date: Thu, 15 Apr 2010 16:20:11 +0200
Subject: [PATCH] fix coercion optimisation

---
 Cython/Compiler/Optimize.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Cython/Compiler/Optimize.py b/Cython/Compiler/Optimize.py
index cb2666e9..c9b24851 100644
--- a/Cython/Compiler/Optimize.py
+++ b/Cython/Compiler/Optimize.py
@@ -1044,6 +1044,8 @@ class OptimizeBuiltinCalls(Visitor.EnvTransform):
         """
         self.visitchildren(node)
         arg = node.arg
+        if isinstance(arg, ExprNodes.PyTypeTestNode):
+            arg = arg.arg
         if isinstance(arg, ExprNodes.CoerceToPyTypeNode):
             if arg.type in (PyrexTypes.py_object_type, Builtin.bool_type):
                 return arg.arg.coerce_to_boolean(self.current_env())
-- 
2.26.2