From: Jan Hubicka <jh@suse.cz>
To: Janis Johnson <janis187@us.ibm.com>
Cc: gcc@gcc.gnu.org, jh@suse.cz
Subject: Re: patch that caused regression PR f/9258
Date: Tue, 14 Jan 2003 21:13:00 -0000 [thread overview]
Message-ID: <20030114180958.GA340@kam.mff.cuni.cz> (raw)
In-Reply-To: <20030114095503.A23671@us.ibm.com>
> The regression reported in PR f/9258 ([3.2/3.3/3.4 regression] ICE in
> compensate_edge, at reg-stack.c:2589) showed up with this patch:
>
> Sat Jun 23 01:23:59 CEST 2001 Jan Hubicka <jh@suse.cz>
>
> * flow.c (mark_set_1, attempt_auto_inc, mark_used_reg,
> try_pre_increment_1): compute REG_FREQ using bb->frequency.
>
> * regclass.c (loop_cost): Kill.
> (frequency): New global variable.
> (record_operand_costs): Replace loop_cost by frequency.
> (scan_one_insn): Likewise.
> (regclass): Likewise; set frequency according to bb->frequency.
>
> * flow.c (split_edge): Set frequency.
>
> I used the minimized test case from the PR and got the same ICE message.
> This information has been added to the PR.
Thanks. It looks like the patch just uncovered latent problem, I will
try to look into this. Would be possible next time when regression is
caused by my patch to assign the bugreport to me so I don't forget about
them?
Honza
>
> Janis
next prev parent reply other threads:[~2003-01-14 18:10 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-01-14 20:59 Janis Johnson
2003-01-14 21:13 ` Jan Hubicka [this message]
2003-01-14 22:05 ` Jan Hubicka
2003-01-15 8:49 ` Richard Henderson
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