From: Paolo Bonzini <bonzini@gnu.org>
To: Uros Bizjak <ubizjak@gmail.com>
Cc: gcc-patches@gcc.gnu.org, Steven Bosscher <stevenb.gcc@gmail.com>
Subject: Re: [PATCH] Fix allocation of reg_known_value
Date: Fri, 30 Nov 2012 10:43:00 -0000 [thread overview]
Message-ID: <50B88CDF.6030508@gnu.org> (raw)
In-Reply-To: <CAFULd4ZG42Y-yhfKdON2kaheU7LgzMHkspmLLMbCBFT1U-xhpg@mail.gmail.com>
Il 29/11/2012 23:47, Uros Bizjak ha scritto:
> This one-liner causes following runtime test failure [1] for
> alphaev68-linux-gnu:
>
> FAIL: gfortran.fortran-torture/execute/save_1.f90 execution, -O2
> FAIL: gfortran.fortran-torture/execute/save_1.f90 execution, -O2
> -fomit-frame-pointer -finline-functions
> FAIL: gfortran.fortran-torture/execute/save_1.f90 execution, -O2
> -fomit-frame-pointer -finline-functions -funroll-loops
> FAIL: gfortran.fortran-torture/execute/save_1.f90 execution, -O2
> -fbounds-check
>
> The patch miscompiles libgfortran library.
>
> I will provide more info tomorrow, any hint what/where should I look
> for differences?
Anywhere. The bug disabled a large part of alias analysis.
Perhaps you can bisect it and backport the fix along the steps.
Paolo
next prev parent reply other threads:[~2012-11-30 10:39 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-29 22:51 Uros Bizjak
2012-11-30 10:43 ` Paolo Bonzini [this message]
2012-11-30 10:43 ` Steven Bosscher
2012-11-30 12:34 ` Uros Bizjak
2012-11-30 13:17 ` Uros Bizjak
2012-11-30 14:54 ` Steven Bosscher
2012-11-30 15:10 ` Steven Bosscher
2012-11-30 15:57 ` Uros Bizjak
-- strict thread matches above, loose matches on Subject: below --
2012-11-27 16:01 Paolo Bonzini
2012-11-27 16:32 ` Steven Bosscher
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