From: Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org>
To: gcc Patches <gcc-patches@gcc.gnu.org>,
Kyrill Tkachov <kyrylo.tkachov@arm.com>,
Richard Earnshaw <Richard.Earnshaw@foss.arm.com>
Subject: [ARM] PR66791: Replace builtins in vld1
Date: Tue, 27 Jul 2021 02:54:09 +0530 [thread overview]
Message-ID: <CAAgBjMkxtL7a-EcQBYz6vgS=205UeRhysWWz=JG=ky8KW5GsCQ@mail.gmail.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 526 bytes --]
Hi,
Similar to aarch64, this patch replaces call to builtin by
dereferencing __a in vld1_p64, vld1_s64 and vld1_u64.
The patch changes code-gen for the intrinsic as follows:
Before patch:
vld1.64 {d16}, [r0:64]
vmov r0, r1, d16 @ int
bx lr
After patch:
ldrd r0, [r0]
bx lr
I assume the code-gen after patch is correct, since it loads two
consecutive words from [r0] into r0 and r1 ?
Bootstrapped+tested on arm-linux-gnueabihf.
OK to commit ?
Thanks,
Prathamesh
[-- Attachment #2: vld1-1.txt --]
[-- Type: text/plain, Size: 1402 bytes --]
2021-07-27 Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org>
PR target/66791
* config/arm/arm_neon.h (vld1_p64): Replace call to builtin by
explicitly dereferencing __a.
(vld1_s64): Likewise.
(vld1_u64): Likewise.
diff --git a/gcc/config/arm/arm_neon.h b/gcc/config/arm/arm_neon.h
index 41b596b5fc6..5a91d15bf75 100644
--- a/gcc/config/arm/arm_neon.h
+++ b/gcc/config/arm/arm_neon.h
@@ -10301,7 +10301,7 @@ __extension__ extern __inline poly64x1_t
__attribute__ ((__always_inline__, __gnu_inline__, __artificial__))
vld1_p64 (const poly64_t * __a)
{
- return (poly64x1_t)__builtin_neon_vld1di ((const __builtin_neon_di *) __a);
+ return (poly64x1_t) { *__a };
}
#pragma GCC pop_options
@@ -10330,7 +10330,7 @@ __extension__ extern __inline int64x1_t
__attribute__ ((__always_inline__, __gnu_inline__, __artificial__))
vld1_s64 (const int64_t * __a)
{
- return (int64x1_t)__builtin_neon_vld1di ((const __builtin_neon_di *) __a);
+ return (int64x1_t) { *__a };
}
#if defined (__ARM_FP16_FORMAT_IEEE) || defined (__ARM_FP16_FORMAT_ALTERNATIVE)
@@ -10374,7 +10374,7 @@ __extension__ extern __inline uint64x1_t
__attribute__ ((__always_inline__, __gnu_inline__, __artificial__))
vld1_u64 (const uint64_t * __a)
{
- return (uint64x1_t)__builtin_neon_vld1di ((const __builtin_neon_di *) __a);
+ return (uint64x1_t) { *__a };
}
__extension__ extern __inline poly8x8_t
next reply other threads:[~2021-07-26 21:24 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-26 21:24 Prathamesh Kulkarni [this message]
2021-07-29 9:27 ` Kyrylo Tkachov
2021-07-29 14:45 ` Prathamesh Kulkarni
2021-07-29 14:49 ` Kyrylo Tkachov
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='CAAgBjMkxtL7a-EcQBYz6vgS=205UeRhysWWz=JG=ky8KW5GsCQ@mail.gmail.com' \
--to=prathamesh.kulkarni@linaro.org \
--cc=Richard.Earnshaw@foss.arm.com \
--cc=gcc-patches@gcc.gnu.org \
--cc=kyrylo.tkachov@arm.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).