From: HAO CHEN GUI <guihaoc@linux.ibm.com>
To: David Edelsohn <dje.gcc@gmail.com>
Cc: gcc-patches <gcc-patches@gcc.gnu.org>,
Segher Boessenkool <segher@kernel.crashing.org>,
"Kewen.Lin" <linkw@linux.ibm.com>,
Peter Bergner <bergner@linux.ibm.com>
Subject: Re: [PATCH-2, rs6000] Enable vector mode for memory equality compare [PR111449]
Date: Wed, 11 Oct 2023 17:10:51 +0800 [thread overview]
Message-ID: <282d81ec-175b-c61e-469b-3024f3e3f446@linux.ibm.com> (raw)
In-Reply-To: <CAGWvny=TzgKysikrOEF9=VAmCUoieerw==dZYX8repNEJsrgpA@mail.gmail.com>
Hi David,
在 2023/10/10 20:44, David Edelsohn 写道:
> Are you stating that although PPC32 supports V16QImode in VSX, the move_by_pieces support also requires TImode, which is not available on PPC32?
>
Yes. By setting MOVE_MAX_PIECES to 16, TImode compare
might be generated as it checks vector mode first then
uses scalar mode by default.
Thanks
Gui Haochen
next prev parent reply other threads:[~2023-10-11 9:10 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-09 2:30 HAO CHEN GUI
2023-10-09 15:42 ` David Edelsohn
2023-10-10 8:18 ` HAO CHEN GUI
2023-10-10 12:44 ` David Edelsohn
2023-10-11 9:10 ` HAO CHEN GUI [this message]
2023-10-17 2:19 ` Kewen.Lin
2023-10-19 8:39 ` HAO CHEN GUI
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