public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/47004] missed optimization in length comparison Date: Mon, 30 Aug 2021 23:57:19 +0000 [thread overview] Message-ID: <bug-47004-4-H5LK9pBydl@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-47004-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47004 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- See Also| |https://gcc.gnu.org/bugzill | |a/show_bug.cgi?id=102138 --- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Note we don;t optimize at -O1 yet, that is PR 102138. With this code: int g(); int h(); int lenzero1(int f, int l) { if ( len(f, l) == 0) return g(); return h(); } We can optimize this one at -O1 since GCC 8 with DOM optimizing it out the second conditional (I did not look to see what fixed it though).
prev parent reply other threads:[~2021-08-30 23:57 UTC|newest] Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top 2010-12-18 16:11 [Bug tree-optimization/47004] New: missed optimization in comparison bosch at gcc dot gnu.org 2010-12-18 19:22 ` [Bug tree-optimization/47004] " bosch at gcc dot gnu.org 2010-12-19 8:55 ` [Bug tree-optimization/47004] missed optimization in length comparison ebotcazou at gcc dot gnu.org 2021-08-30 1:07 ` pinskia at gcc dot gnu.org 2021-08-30 23:57 ` pinskia at gcc dot gnu.org [this message]
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-47004-4-H5LK9pBydl@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).