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From: Uros Bizjak <ubizjak@gmail.com>
Date: Thu, 29 Aug 2019 08:49:00 -0000
Message-ID: <CAFULd4Yaoa3h4vtd=x0yposto8hsLouLAwSdF5P2thG9CuVC=A@mail.gmail.com>
Subject: Re: [PATCH, i386]: Improve STV conversion of shifts
To: "gcc-patches@gcc.gnu.org" <gcc-patches@gcc.gnu.org>
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On Wed, Aug 28, 2019 at 5:12 PM Uros Bizjak <ubizjak@gmail.com> wrote:
>
> Attached patch improves costing for STV shifts and corrects reject
> condition for out of range shift count operands.
>
> 2019-08-28  Uro=C5=A1 Bizjak  <ubizjak@gmail.com>
>
>     * config/i386/i386-features.c
>     (general_scalar_chain::compute_convert_gain):
>     Correct cost for double-word shifts.
>     (general_scalar_to_vector_candidate_p): Reject count operands
>     greater or equal to mode bitsize.
>
> Bootstrapped and regression tested on x86_64-linux-gnu {,-m32}.
>
> Committed to mainline SVN.

Ouch... I mixed up patches and actually committed the patch that
removes maximum from cost of sse<->int moves.

I can leave the patch for a day, so we can see the effects of the cost
change, and if the patch creates problems, I'll revert it.

Sorry for the mixup,
Uros.