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From: "steven at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug target/23451] [3.4/4.0/4.1/4.2 regression] Redundant reloading from stack frame Date: Tue, 10 Jan 2006 20:36:00 -0000 [thread overview] Message-ID: <20060110203619.12179.qmail@sourceware.org> (raw) In-Reply-To: <bug-23451-5724@http.gcc.gnu.org/bugzilla/> ------- Comment #3 from steven at gcc dot gnu dot org 2006-01-10 20:36 ------- GCC 4.2 (trunk) produces this kind of redundant loads: ... movl -20(%ebp), %eax testl %eax, %eax je .L10 movl -20(%ebp), %eax movl %eax, (%esp) call strlen ... And so does GCC 3.3-hammer_branch: ... movl -16(%ebp), %ecx xorl %ebx, %ebx testl %ecx, %ecx je .L8 movl -16(%ebp), %eax movl %eax, (%esp) call strlen ... -- steven at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Ever Confirmed|0 |1 Last reconfirmed|0000-00-00 00:00:00 |2006-01-10 20:36:18 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23451
next prev parent reply other threads:[~2006-01-10 20:36 UTC|newest] Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <bug-23451-5724@http.gcc.gnu.org/bugzilla/> 2005-10-31 5:05 ` [Bug target/23451] [3.4/4.0/4.1 " mmitchel at gcc dot gnu dot org 2006-01-10 20:36 ` steven at gcc dot gnu dot org [this message] 2006-01-10 20:57 ` [Bug target/23451] [3.4/4.0/4.1/4.2 " steven at gcc dot gnu dot org 2006-01-10 21:27 ` steven at gcc dot gnu dot org 2006-01-10 21:33 ` steven at gcc dot gnu dot org 2006-01-10 22:44 ` herbert at gondor dot apana dot org dot au 2006-01-10 22:58 ` steven at gcc dot gnu dot org 2006-01-10 23:00 ` steven at gcc dot gnu dot org 2006-01-10 23:00 ` steven at gcc dot gnu dot org 2006-01-10 23:01 ` steven at gcc dot gnu dot org 2006-01-10 23:02 ` steven at gcc dot gnu dot org 2006-01-10 23:04 ` steven at gcc dot gnu dot org 2006-01-10 23:25 ` herbert at gondor dot apana dot org dot au 2006-01-10 23:36 ` steven at gcc dot gnu dot org 2006-01-10 23:41 ` herbert at gondor dot apana dot org dot au 2006-01-10 23:44 ` [Bug target/23451] Redundant reloading from stack frame on i386 steven at gcc dot gnu dot org 2006-01-10 23:45 ` herbert at gondor dot apana dot org dot au 2006-01-29 18:09 ` pinskia at gcc dot gnu dot org 2009-04-22 23:06 ` pinskia at gcc dot gnu dot org
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