public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
From: "hubicka at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug target/113235] SMHasher SHA3-256 benchmark is almost 40% slower vs. Clang Date: Fri, 05 Jan 2024 19:54:32 +0000 [thread overview] Message-ID: <bug-113235-4-e8104KIlWu@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-113235-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113235 Jan Hubicka <hubicka at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |hubicka at gcc dot gnu.org --- Comment #4 from Jan Hubicka <hubicka at gcc dot gnu.org> --- I keep mentioning to Larabel that he should use -fno-semantic-interposition, but he doesn't. Profile is very simple: 96.75% SMHasher [.] keccakf.lto_priv.0 ◆ All goes to simple loop. On Zen3 gcc 13 -march=native -Ofast -flto I get: 3.85 │330: mov %r8,%rdi 7.68 │ movslq (%rsi,%r9,1),%rcx 3.85 │ lea (%rax,%rcx,8),%r10 3.86 │ mov (%rdx,%r9,1),%ecx 3.83 │ add $0x4,%r9 3.86 │ mov (%r10),%r8 7.37 │ rol %cl,%rdi 7.37 │ mov %rdi,(%r10) 4.76 │ cmp $0x60,%r9 0.00 │ ↑ jne 330 Clang seems to unroll it: 0.25 │ d0: mov -0x48(%rsp),%rdx ▒ 0.25 │ xor %r12,%rcx ▒ 0.25 │ mov %r13,%r12 ▒ 0.25 │ mov %r13,0x10(%rsp) ▒ 0.25 │ mov %rax,%r13 ◆ 0.26 │ xor %r15,%r13 ▒ 0.23 │ mov %r11,-0x70(%rsp) ▒ 0.25 │ mov %r8,0x8(%rsp) ▒ 0.25 │ mov %r15,-0x40(%rsp) ▒ 0.25 │ mov %r10,%r15 ▒ 0.26 │ mov %r10,(%rsp) ▒ 0.26 │ mov %r14,%r10 ▒ 0.25 │ xor %r12,%r10 ▒ 0.26 │ xor %rsi,%r15 ▒ 0.24 │ mov %rbp,-0x80(%rsp) ▒ 0.25 │ xor %rcx,%r15 ▒ 0.26 │ mov -0x60(%rsp),%rcx ▒ 0.25 │ xor -0x68(%rsp),%r15 ▒ 0.26 │ xor %rbp,%rdx ▒ 0.25 │ mov -0x30(%rsp),%rbp ▒ 0.25 │ xor %rdx,%r13 ▒ 0.24 │ mov -0x10(%rsp),%rdx ▒ 0.25 │ mov %rcx,%r12 ▒ 0.24 │ xor %rcx,%r13 ▒ 0.25 │ mov $0x1,%ecx ▒ 0.25 │ xor %r11,%rdx ▒ 0.24 │ mov %r8,%r11 ▒ 0.25 │ mov -0x28(%rsp),%r8 ▒ 0.26 │ xor -0x58(%rsp),%r8 ▒ 0.24 │ xor %rdx,%r8 ▒ 0.26 │ mov -0x8(%rsp),%rdx ▒ 0.25 │ xor %rbp,%r8 ▒ 0.26 │ xor %r11,%rdx ▒ 0.25 │ mov -0x20(%rsp),%r11 ▒ 0.25 │ xor %rdx,%r10 ▒....
next prev parent reply other threads:[~2024-01-05 19:54 UTC|newest] Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-01-04 16:53 [Bug rtl-optimization/113235] New: SMHasher SHA3-256 benchmark is almost 40% slower vs. Clang on AMD Zen 4 aros at gmx dot com 2024-01-04 17:05 ` [Bug target/113235] " aros at gmx dot com 2024-01-04 17:09 ` xry111 at gcc dot gnu.org 2024-01-04 17:27 ` [Bug target/113235] SMHasher SHA3-256 benchmark is almost 40% slower vs. Clang xry111 at gcc dot gnu.org 2024-01-05 19:54 ` hubicka at gcc dot gnu.org [this message] 2024-01-05 20:26 ` [Bug target/113235] SMHasher SHA3-256 benchmark is almost 40% slower vs. Clang (not enough complete loop peeling) hubicka at gcc dot gnu.org 2024-01-05 21:03 ` hubicka at gcc dot gnu.org 2024-01-08 14:54 ` rguenth at gcc dot gnu.org 2024-01-08 14:55 ` rguenth at gcc dot gnu.org 2024-04-24 16:02 ` hubicka at gcc dot gnu.org 2024-04-24 16:41 ` dmalcolm at gcc dot gnu.org 2024-04-24 16:44 ` pinskia at gcc dot gnu.org 2024-04-24 16:47 ` pinskia at gcc dot gnu.org 2024-04-24 16:51 ` xry111 at gcc dot gnu.org
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=bug-113235-4-e8104KIlWu@http.gcc.gnu.org/bugzilla/ \ --to=gcc-bugzilla@gcc.gnu.org \ --cc=gcc-bugs@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: linkBe 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).