Re: open64 versus gcc

Diego Novillo <dnovillo@redhat.com>
29 Nov 2006 11:07:43 -0500

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From: Diego Novillo <dnovillo@redhat.com>
Newsgroups: comp.compilers
Date: 29 Nov 2006 11:07:43 -0500
Organization: Red Hat Canada
References: 06-11-09406-11-100 06-11-104 06-11-113 06-11-120
Keywords: GCC, performance

dz wrote on 11/29/06 00:52:
> The criteria I am looking for is stability and the strength of some
> basic analysis in the compiler such as alias analysis. Can anyone
> comment on that ?


For alias analysis, GCC uses a fairly sophisticated constraint-based
points-to analysis and complements it with type-based disambiguation.
You can read about it in the various GCC Summit proceedings over the
last 2-3 years. You can find them in http://gcc.gnu.org/wiki


I'm not sure what exactly you mean by "some basic analysis", but you
will find GCC a fairly featureful compiler. In terms of strength, GCC
is the system compiler of every Linux distribution out there, so it is
thoroughly tested and breaking it takes a bit of effort.


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