From: Jeff Law <law@redhat.com>
To: gcc-patches@gcc.gnu.org, richard.sandiford@linaro.org
Subject: Re: Add support for bitwise reductions
Date: Thu, 14 Dec 2017 00:37:00 -0000 [thread overview]
Message-ID: <43b3bee8-e2ac-1ad8-549a-13c9e47b6f1c@redhat.com> (raw)
In-Reply-To: <87lgiyp4i5.fsf@linaro.org>
On 11/22/2017 11:12 AM, Richard Sandiford wrote:
> Richard Sandiford <richard.sandiford@linaro.org> writes:
>> This patch adds support for the SVE bitwise reduction instructions
>> (ANDV, ORV and EORV). It's a fairly mechanical extension of existing
>> REDUC_* operators.
>>
>> Tested on aarch64-linux-gnu (with and without SVE), x86_64-linux-gnu
>> and powerpc64le-linux-gnu.
>
> Here's an updated version that applies on top of the recent
> removal of REDUC_*_EXPR. Tested as before.
>
> Thanks,
> Richard
>
>
> 2017-11-22 Richard Sandiford <richard.sandiford@linaro.org>
> Alan Hayward <alan.hayward@arm.com>
> David Sherwood <david.sherwood@arm.com>
>
> gcc/
> * optabs.def (reduc_and_scal_optab, reduc_ior_scal_optab)
> (reduc_xor_scal_optab): New optabs.
> * doc/md.texi (reduc_and_scal_@var{m}, reduc_ior_scal_@var{m})
> (reduc_xor_scal_@var{m}): Document.
> * doc/sourcebuild.texi (vect_logical_reduc): Likewise.
> * internal-fn.def (IFN_REDUC_AND, IFN_REDUC_IOR, IFN_REDUC_XOR): New
> internal functions.
> * fold-const-call.c (fold_const_call): Handle them.
> * tree-vect-loop.c (reduction_fn_for_scalar_code): Return the new
> internal functions for BIT_AND_EXPR, BIT_IOR_EXPR and BIT_XOR_EXPR.
> * config/aarch64/aarch64-sve.md (reduc_<bit_reduc>_scal_<mode>):
> (*reduc_<bit_reduc>_scal_<mode>): New patterns.
> * config/aarch64/iterators.md (UNSPEC_ANDV, UNSPEC_ORV)
> (UNSPEC_XORV): New unspecs.
> (optab): Add entries for them.
> (BITWISEV): New int iterator.
> (bit_reduc_op): New int attributes.
>
> gcc/testsuite/
> * lib/target-supports.exp (check_effective_target_vect_logical_reduc):
> New proc.
> * gcc.dg/vect/vect-reduc-or_1.c: Also run for vect_logical_reduc
> and add an associated scan-dump test. Prevent vectorization
> of the first two loops.
> * gcc.dg/vect/vect-reduc-or_2.c: Likewise.
> * gcc.target/aarch64/sve_reduc_1.c: Add AND, IOR and XOR reductions.
> * gcc.target/aarch64/sve_reduc_2.c: Likewise.
> * gcc.target/aarch64/sve_reduc_1_run.c: Likewise.
> (INIT_VECTOR): Tweak initial value so that some bits are always set.
> * gcc.target/aarch64/sve_reduc_2_run.c: Likewise.
OK.
Jeff
next prev parent reply other threads:[~2017-12-14 0:37 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-17 10:10 Richard Sandiford
2017-11-22 18:28 ` Richard Sandiford
2017-12-14 0:37 ` Jeff Law [this message]
2018-01-07 17:03 ` James Greenhalgh
2018-01-24 21:25 ` Rainer Orth
2018-01-25 11:18 ` Richard Sandiford
2018-01-26 9:40 ` Christophe Lyon
2018-01-26 10:25 ` Richard Sandiford
2018-01-26 10:46 ` Christophe Lyon
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=43b3bee8-e2ac-1ad8-549a-13c9e47b6f1c@redhat.com \
--to=law@redhat.com \
--cc=gcc-patches@gcc.gnu.org \
--cc=richard.sandiford@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).