Re: Copy Propagation

Diego Novillo <dnovillo@redhat.com>
4 Mar 2005 14:10:53 -0500

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Related articles
Copy Propagation aaron.keen@gmail.com (Aaroneous) (2005-02-28)
Re: Copy Propagation dberlin@dberlin.org (Daniel Berlin) (2005-03-01)
Re: Copy Propagation gneuner2@comcast.net (George Neuner) (2005-03-01)
Re: Copy Propagation dnovillo@redhat.com (Diego Novillo) (2005-03-04)
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From: Diego Novillo <dnovillo@redhat.com>
Newsgroups: comp.compilers
Date: 4 Mar 2005 14:10:53 -0500
Organization: Red Hat Canada
References: 05-02-102 05-03-006
Keywords: optimize, GCC
Posted-Date: 04 Mar 2005 14:10:53 EST

Daniel Berlin wrote:


> You could teach an ssa copy propagator to handle the above case, first by
> transforming it into
> b_3 = PHI (x_1, x_1);
>
Which is exactly what GCC does, but I guess you already knew that ;)




Diego.

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