From: Jan Beulich <jbeulich@suse.com>
To: "gcc-patches@gcc.gnu.org" <gcc-patches@gcc.gnu.org>
Cc: "hubicka@ucw.cz" <hubicka@ucw.cz>,
"ubizjak@gmail.com" <ubizjak@gmail.com>,
Kirill Yukhin <kirill.yukhin@gmail.com>,
Hongtao Liu <hongtao.liu@intel.com>
Subject: [PATCH] x86: {,v}psadbw have commutative source operands
Date: Fri, 27 May 2022 10:13:28 +0200 [thread overview]
Message-ID: <20d007c8-f703-8fac-6a13-1643af31adc6@suse.com> (raw)
Like noticed for gas as well (binutils-gdb commit c8cad9d389b7), the
"absolute difference" aspect of the insns makes their source operands
commutative.
gcc/
2022-05-XX Jan Beulich <jbeulich@suse.com>
* config/i386/mmx.md (mmx_psadbw): Mark as commutative.
* config/i386/sse.md (<sse2_avx2>_psadbw): Likewise.
--- a/gcc/config/i386/mmx.md
+++ b/gcc/config/i386/mmx.md
@@ -4407,7 +4407,7 @@
(define_insn "mmx_psadbw"
[(set (match_operand:V1DI 0 "register_operand" "=y,x,Yw")
- (unspec:V1DI [(match_operand:V8QI 1 "register_operand" "0,0,Yw")
+ (unspec:V1DI [(match_operand:V8QI 1 "register_operand" "%0,0,Yw")
(match_operand:V8QI 2 "register_mmxmem_operand" "ym,x,Yw")]
UNSPEC_PSADBW))]
"(TARGET_MMX || TARGET_MMX_WITH_SSE)
--- a/gcc/config/i386/sse.md
+++ b/gcc/config/i386/sse.md
@@ -19983,7 +19983,7 @@
(define_insn "<sse2_avx2>_psadbw"
[(set (match_operand:VI8_AVX2_AVX512BW 0 "register_operand" "=x,YW")
(unspec:VI8_AVX2_AVX512BW
- [(match_operand:<ssebytemode> 1 "register_operand" "0,YW")
+ [(match_operand:<ssebytemode> 1 "register_operand" "%0,YW")
(match_operand:<ssebytemode> 2 "vector_operand" "xBm,YWm")]
UNSPEC_PSADBW))]
"TARGET_SSE2"
next reply other threads:[~2022-05-27 8:13 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-27 8:13 Jan Beulich [this message]
2022-05-27 9:05 ` Uros Bizjak
2022-05-30 7:59 ` Jan Beulich
2022-05-30 8:28 ` Uros Bizjak
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=20d007c8-f703-8fac-6a13-1643af31adc6@suse.com \
--to=jbeulich@suse.com \
--cc=gcc-patches@gcc.gnu.org \
--cc=hongtao.liu@intel.com \
--cc=hubicka@ucw.cz \
--cc=kirill.yukhin@gmail.com \
--cc=ubizjak@gmail.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).