public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/19581] Missed store motion on the tree level Date: Tue, 26 Jul 2005 13:59:00 -0000 [thread overview] Message-ID: <20050726132908.26840.qmail@sourceware.org> (raw) In-Reply-To: <20050123014322.19581.pinskia@gcc.gnu.org> ------- Additional Comments From rguenth at gcc dot gnu dot org 2005-07-26 13:29 ------- For a reduced array with only 4 elements (I know - this should be a --param) we now get in .vars (with the array aliasing patch): f (n) { int n.39; unsigned int ivtmp.33; int lsm_tmp.32; int lsm_tmp.31; int lsm_tmp.30; int lsm_tmp.29; <bb 0>: n.39 = n - 1; if (n.39 != 0) goto <L6>; else goto <L2>; <L6>:; lsm_tmp.29 = r[2]; lsm_tmp.30 = r[1]; lsm_tmp.31 = r[3]; lsm_tmp.32 = r[0]; ivtmp.33 = 0; <L0>:; lsm_tmp.32 = lsm_tmp.32 + lsm_tmp.31; lsm_tmp.30 = lsm_tmp.32 + lsm_tmp.30; lsm_tmp.29 = lsm_tmp.30 + lsm_tmp.29; lsm_tmp.31 = lsm_tmp.31 + lsm_tmp.29; ivtmp.33 = ivtmp.33 + 1; if (ivtmp.33 != (unsigned int) n.39) goto <L0>; else goto <L10>; <L10>:; r[2] = lsm_tmp.29; r[1] = lsm_tmp.30; r[3] = lsm_tmp.31; r[0] = lsm_tmp.32; <L2>:; return; } and the asm loop looks like .L4: addl %edx, %eax incl %esi addl %eax, %ecx addl %ecx, %ebx addl %ebx, %edx cmpl %edi, %esi jne .L4 as in exactly what you want. Don't hold your breath for 4.1, though. -- What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|unassigned at gcc dot gnu |rguenth at gcc dot gnu dot |dot org |org Status|NEW |ASSIGNED Last reconfirmed|2005-06-09 16:37:28 |2005-07-26 13:29:06 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19581
next prev parent reply other threads:[~2005-07-26 13:29 UTC|newest] Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top 2005-01-23 1:43 [Bug tree-optimization/19581] New: Missed store monition on the tree level (on PPC in general) pinskia at gcc dot gnu dot org 2005-01-23 1:45 ` [Bug tree-optimization/19581] " pinskia at gcc dot gnu dot org 2005-01-23 1:47 ` dberlin at gcc dot gnu dot org 2005-01-23 19:27 ` steven at gcc dot gnu dot org 2005-01-23 19:30 ` [Bug tree-optimization/19581] Missed store monition on the tree level steven at gcc dot gnu dot org 2005-01-23 19:44 ` rakdver at gcc dot gnu dot org 2005-01-23 19:53 ` steven at gcc dot gnu dot org 2005-01-23 20:00 ` pinskia at gcc dot gnu dot org 2005-01-23 20:01 ` rakdver at gcc dot gnu dot org 2005-07-26 13:21 ` [Bug tree-optimization/19581] Missed store motion " dberlin at gcc dot gnu dot org 2005-07-26 13:59 ` rguenth at gcc dot gnu dot org [this message] [not found] <bug-19581-6528@http.gcc.gnu.org/bugzilla/> 2006-02-03 12:32 ` rguenth at gcc dot gnu dot org 2006-02-03 12:32 ` rguenth at gcc dot gnu dot 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=20050726132908.26840.qmail@sourceware.org \ --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).