From 57aedc85cd589ac468fb87083e697a34cfefb065 Mon Sep 17 00:00:00 2001
From: Andreas Kloeckner <inform@tiker.net>
Date: Thu, 10 May 2012 00:33:43 -0400
Subject: [PATCH] CSE-on-creation: Don't create variables aliasing other
variables.
---
loopy/creation.py | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/loopy/creation.py b/loopy/creation.py
index 0337f7c8b..28be2b095 100644
--- a/loopy/creation.py
+++ b/loopy/creation.py
@@ -35,9 +35,11 @@ class CSEToAssignmentMapper(IdentityMapper):
dtype = None
child = self.rec(expr.child)
+ from pymbolic.primitives import Variable
+ if isinstance(child, Variable):
+ return child
var_name = self.add_assignment(expr.prefix, child, dtype)
- from pymbolic.primitives import Variable
var = Variable(var_name)
self.expr_to_var[expr.child] = var
return var
--
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