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From: "ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/27986] [4.2 Regression] jump to middle of loop on entry with using old version of an variable Date: Thu, 12 Feb 2009 13:59:00 -0000 [thread overview] Message-ID: <20090212135935.14519.qmail@sourceware.org> (raw) In-Reply-To: <bug-27986-5748@http.gcc.gnu.org/bugzilla/> ------- Comment #13 from ubizjak at gmail dot com 2009-02-12 13:59 ------- GCC: (GNU) 4.4.0 20090129 (experimental) [trunk revision 143750]: foo: movl 4(%rdi), %eax #, s .L2: movl %eax, %ecx # s, s.29 addl (%rsi), %ecx #* d, s.29 addq $4, %rsi #, d movl %eax, %r8d # s, s.30 cmpl %edx, %ecx # g, s movl %ecx, %eax # s.29, s jl .L2 #, movl %r8d, (%rdi) # s.30,* v ret GCC: (GNU) 4.3.4 20090211 (prerelease) [gcc-4_3-branch revision 144096]: foo: movl 4(%rdi), %ecx #, s .L2: movl %ecx, %eax # s, s.19 addl (%rsi), %eax #* d, s.19 addq $4, %rsi #, d movl %ecx, %r8d # s, s.20 cmpl %edx, %eax # g, s movl %eax, %ecx # s.19, s jl .L2 #, movl %r8d, (%rdi) # s.20,* v ret Fixed for 4.3 and 4.4 branch. -- ubizjak at gmail dot com changed: What |Removed |Added ---------------------------------------------------------------------------- Known to work|3.4.0 |3.4.0 4.3.4 4.4.0 Summary|[4.2/4.3/4.4 Regression] |[4.2 Regression] jump to |jump to middle of loop on |middle of loop on entry with |entry with using old version|using old version of an |of an variable |variable http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27986
next prev parent reply other threads:[~2009-02-12 13:59 UTC|newest] Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top 2006-06-10 22:32 [Bug pending/27986] New: unnecessary jump to middle of loop on entry dean at arctic dot org 2006-06-11 8:35 ` [Bug middle-end/27986] jump to middle of loop on entry with using old version of an variable pinskia at gcc dot gnu dot org 2006-09-03 7:19 ` [Bug middle-end/27986] [4.0/4.1/4.2 Regression] " pinskia at gcc dot gnu dot org 2006-09-07 1:14 ` mmitchel at gcc dot gnu dot org 2006-09-30 9:25 ` steven at gcc dot gnu dot org 2006-10-02 13:56 ` amacleod at redhat dot com 2006-10-02 14:01 ` amacleod at redhat dot com 2006-10-02 21:46 ` steven at gcc dot gnu dot org 2006-10-02 22:14 ` amacleod at redhat dot com 2007-02-03 17:36 ` [Bug middle-end/27986] [4.0/4.1/4.2/4.3 " gdr at gcc dot gnu dot org 2007-02-03 20:42 ` pinskia at gcc dot gnu dot org 2007-02-14 9:12 ` mmitchel at gcc dot gnu dot org 2007-03-10 1:41 ` mmitchel at gcc dot gnu dot org 2008-02-19 6:01 ` xinliangli at gmail dot com 2008-02-19 17:43 ` [Bug middle-end/27986] [4.0/4.1/4.2/4.3/4.4 " dean at arctic dot org 2008-07-04 21:23 ` [Bug middle-end/27986] [4.2/4.3/4.4 " jsm28 at gcc dot gnu dot org 2009-02-12 13:59 ` ubizjak at gmail dot com [this message] 2009-03-30 16:58 ` [Bug middle-end/27986] [4.2 " jsm28 at gcc dot gnu dot org
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