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Re: Beyond GCC 3.0: Summing Up

To: gcc at gcc dot gnu dot org
Subject: Re: Beyond GCC 3.0: Summing Up
From: "Eric Christopher" <echristo at redhat dot com>
Date: Tue, 10 Jul 2001 18:29:33 +0000
Newsgroups: cygnus.egcs
Organization: Red Hat Inc.
References: <Pine.LNX.4.33.0107080959180.19091-100000@host140.cambridge.redhat.com>

Bernd,

> A real-life example: the reload patch I did just before 3.0 which
> deleted all USEs generated during reload.  It seemed obvious enough, but
> the mips backend does horrible things with its reload_outdi pattern,
> emitting USEs of dead (clobbered) registers.  Did the people working on
> mips investigate why their backend suddenly broke?  Did they attempt to
> fix the problem after I analyzed it (some time after the patch was
> reverted)?  No on both counts.  We now have an unfixed bug with bogus
> USEs being left around, and totally broken code in the mips backend, and
> no one is doing anything about it.
> 

Can you perhaps send me a description of the problem?  MIPS is currently
unmaintained at the moment, but the backend should be fixed and anything
that makes reload better would be, IMHO, a good thing.

-eric


-- 
I will not grease the monkey bars

References:
- Re: Beyond GCC 3.0: Summing Up
  - From: Bernd Schmidt

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