From: Jeff Law <law@redhat.com>
To: Ilya Enkovich <enkovich.gnu@gmail.com>
Cc: gcc-patches@gcc.gnu.org
Subject: Re: [Boolean Vector, patch 3/5] Use boolean vector in C/C++ FE
Date: Tue, 13 Oct 2015 15:42:00 -0000 [thread overview]
Message-ID: <561D2659.7050600@redhat.com> (raw)
In-Reply-To: <20151013141433.GM63757@msticlxl57.ims.intel.com>
On 10/13/2015 08:14 AM, Ilya Enkovich wrote:
>>> +
>>> +static tree
>>> +build_vec_cmp (tree_code code, tree type,
>>> + tree arg0, tree arg1)
>>> +{
>>> + tree zero_vec = build_zero_cst (type);
>>> + tree minus_one_vec = build_minus_one_cst (type);
>>> + tree cmp_type = build_same_sized_truth_vector_type (type);
>>> + tree cmp = build2 (code, cmp_type, arg0, arg1);
>>> + return build3 (VEC_COND_EXPR, type, cmp, minus_one_vec, zero_vec);
>>> +}
>> Isn't this implementation the same for C & C++? Does it make sense to put
>> it in c-family/c-common.c?
>
> C++ version calls fold_if_not_in_template for generated comparison. It is required there to successfully recognize vector MIN, MAX and ABS templates for vector ?: conditional operator. Vector form of ?: conditional operator is supported for C++ only.
Ah, nevermind then.
>>
>> However, more generally, do we need to do anything for the other languages?
>
> Looking into that I got an impression vector modes are used by C/C++ vector extensions only. And I think regression testing would reveal some failures otherwise.
Maybe this stuff hasn't bled into the Fortran front-end, but the
gfortran front-end certainly has OpenMP support which presumably has
vector extensions.
The fact that nothing's failing in the testsuite is encouraging, but
it'd be worth spending a few minutes taking a look to see if there's
something that might need updating.
Jeff
next prev parent reply other threads:[~2015-10-13 15:42 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-02 14:05 Ilya Enkovich
2015-10-09 20:51 ` Jeff Law
2015-10-13 14:15 ` Ilya Enkovich
2015-10-13 15:42 ` Jeff Law [this message]
2015-10-13 15:59 ` Ilya Enkovich
2015-10-20 21:36 ` Jeff Law
2015-10-21 11:24 ` Ilya Enkovich
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=561D2659.7050600@redhat.com \
--to=law@redhat.com \
--cc=enkovich.gnu@gmail.com \
--cc=gcc-patches@gcc.gnu.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).