From: Max Filippov <jcmvbkbc@gmail.com>
To: "Takayuki 'January June' Suwa" <jjsuwa_sys3175@yahoo.co.jp>
Cc: GCC Patches <gcc-patches@gcc.gnu.org>
Subject: Re: [PATCH] xtensa: constantsynth: Add new 3-insns synthesis pattern
Date: Sat, 10 Sep 2022 11:26:23 -0700 [thread overview]
Message-ID: <CAMo8Bf+JRvcA5w=fyTZ=NrQLCEaviVknomcpmDycUf16HcTjNw@mail.gmail.com> (raw)
In-Reply-To: <ff016000-c27f-f4de-9b96-bea2b9079514@yahoo.co.jp>
On Sat, Sep 10, 2022 at 2:44 AM Takayuki 'January June' Suwa
<jjsuwa_sys3175@yahoo.co.jp> wrote:
>
> This patch adds a new 3-instructions constant synthesis pattern:
>
> - A value that can fit into a signed 12-bit after a number of either bitwise
> left or right rotations:
> => "MOVI(.N) Ax, simm12" + "SSAI (1 ... 11) or (21 ... 31)"
> + "SRC Ax, Ax, Ax"
>
> gcc/ChangeLog:
>
> * config/xtensa/xtensa.cc (xtensa_constantsynth):
> Add new pattern for the abovementioned case.
>
> gcc/testsuite/ChangeLog:
>
> * gcc.target/xtensa/constsynth_3insns.c (test_4):
> Add new test function.
> ---
> gcc/config/xtensa/xtensa.cc | 31 +++++++++++++++++++
> .../gcc.target/xtensa/constsynth_3insns.c | 11 +++++++
> 2 files changed, 42 insertions(+)
Regtested for target=xtensa-linux-uclibc, no new regressions.
Committed to master.
--
Thanks.
-- Max
prev parent reply other threads:[~2022-09-10 18:26 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-10 9:29 Takayuki 'January June' Suwa
2022-09-10 18:26 ` Max Filippov [this message]
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