From: Tamar Christina <Tamar.Christina@arm.com>
To: "gcc-patches@gcc.gnu.org" <gcc-patches@gcc.gnu.org>
Cc: nd <nd@arm.com>,
Ramana Radhakrishnan <Ramana.Radhakrishnan@arm.com>,
Richard Earnshaw <Richard.Earnshaw@arm.com>,
"nickc@redhat.com" <nickc@redhat.com>,
Kyrylo Tkachov <Kyrylo.Tkachov@arm.com>
Subject: [PATCH 7/9][GCC][Arm] Enable autovectorization of Half float values
Date: Sun, 11 Nov 2018 10:27:00 -0000 [thread overview]
Message-ID: <20181111102751.GA4667@arm.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 628 bytes --]
Hi All,
The AArch32 backend is currently not able to support autovectorization of half-float values
on ARM. This is because we never told the vectorizer what the vector modes are for Half floats.
This enables autovectorization by definiting V4HF and V8HF as the vector modes.
Bootstrap and Regtest on aarch64-none-linux-gnu, arm-none-gnueabihf and x86_64-pc-linux-gnu
are still on going but previous patch showed no regressions.
Ok for trunk?
Thanks,
Tamar
gcc/ChangeLog:
2018-11-11 Tamar Christina <tamar.christina@arm.com>
* config/arm/arm.c (arm_preferred_simd_mode): Add V4HF and V8HF.
--
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: rb10282.patch --]
[-- Type: text/x-diff; name="rb10282.patch", Size: 525 bytes --]
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index 8393f0b87f34c04c9dcc89c63d2e9bbd042c969c..79502606b632e6a187732c8b3be118df8bde149a 100644
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -27211,6 +27211,8 @@ arm_preferred_simd_mode (scalar_mode mode)
if (TARGET_NEON)
switch (mode)
{
+ case E_HFmode:
+ return TARGET_NEON_VECTORIZE_DOUBLE ? V4HFmode : V8HFmode;
case E_SFmode:
return TARGET_NEON_VECTORIZE_DOUBLE ? V2SFmode : V4SFmode;
case E_SImode:
next reply other threads:[~2018-11-11 10:27 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-11 10:27 Tamar Christina [this message]
2018-12-21 10:57 ` Tamar Christina
2018-12-21 11:10 ` Kyrill Tkachov
2019-01-02 11:35 ` Tamar Christina
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=20181111102751.GA4667@arm.com \
--to=tamar.christina@arm.com \
--cc=Kyrylo.Tkachov@arm.com \
--cc=Ramana.Radhakrishnan@arm.com \
--cc=Richard.Earnshaw@arm.com \
--cc=gcc-patches@gcc.gnu.org \
--cc=nd@arm.com \
--cc=nickc@redhat.com \
/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).