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Re: A case where PHI-OPT pessimizes the code

From: Steven Bosscher <stevenb dot gcc at gmail dot com>
To: Richard Guenther <richard dot guenther at gmail dot com>
Cc: GCC Mailing List <gcc at gcc dot gnu dot org>, Richard Guenther <rguenther at suse dot de>, Alan Modra <amodra at gmail dot com>
Date: Mon, 23 Apr 2012 18:59:59 +0200
Subject: Re: A case where PHI-OPT pessimizes the code
References: <CABu31nNyBhnWHyA1y2r8G8G--QjO2vd_=2Cb1=WqFKr8VpX0xQ@mail.gmail.com> <CAFiYyc3ZdJG_F=LeAo5JpUT_S9Ku9wV7db15EP_ZOpapXf1crA@mail.gmail.com> <CABu31nO9reOCtUBHTdo4G7zs+Jcry7=9xs=OjD3_TOvGHgJgEA@mail.gmail.com>

On Mon, Apr 23, 2012 at 2:50 PM, Steven Bosscher <stevenb.gcc@gmail.com> wrote:
> I will file a PR for this later today, maybe after trying on a few
> other targets to see if this is a middle-end problem or a target
> issue.

This is now PR target/53087 (http://gcc.gnu.org/PR53087).

Actually the poor code looks to be coming from the &-operation, not
from the _Bool->int conversion. But I don't know enough powerpc-speak
to be sure...

Ciao!
Steven

References:
- A case where PHI-OPT pessimizes the code
  - From: Steven Bosscher
- Re: A case where PHI-OPT pessimizes the code
  - From: Richard Guenther
- Re: A case where PHI-OPT pessimizes the code
  - From: Steven Bosscher

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