From: Jeff Law <law@redhat.com>
To: "H.J. Lu" <hjl.tools@gmail.com>, gcc-patches@gcc.gnu.org
Subject: Re: [PATCH] Compile gcc.target/i386/pr78904-4a.c with -mtune=generic
Date: Wed, 16 Sep 2020 22:12:04 -0600 [thread overview]
Message-ID: <635108c5-16c0-8f58-725b-a7de3c1ea9b2@redhat.com> (raw)
In-Reply-To: <20200915143246.102392-1-hjl.tools@gmail.com>
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On 9/15/20 8:32 AM, H.J. Lu via Gcc-patches wrote:
> commit e95395926a84a2406faefe0995295d199d595440
> Author: Uros Bizjak <ubizjak@gmail.com>
> Date: Thu Jun 18 20:12:48 2020 +0200
>
> i386: Fix mode of ZERO_EXTRACT RTXes, remove ext_register_operand predicate.
>
> caused
>
> FAIL: gcc.target/i386/pr78904-4a.c scan-assembler [ \t]movb[\t ]+%.h, t
>
> when compiled with --target_board='unix{-m32\ -march=cascadelake}'. With
> -mtune=generic:
>
> movzwl 4(%esp), %edx
> movl 8(%esp), %eax
> movb %dh, t(%eax)
> ret
>
> With -mtune=cascadelake:
>
> movzbl 5(%esp), %edx
> movl 8(%esp), %eax
> movb %dl, t(%eax)
> ret
>
> Add -mtune=generic for --target_board='unix{-m32\ -march=cascadelake}'.
OK with an appropriate ChangeLog entry on the commit.
jeff
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prev parent reply other threads:[~2020-09-17 4:12 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-15 14:32 H.J. Lu
2020-09-17 4:12 ` Jeff Law [this message]
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