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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 tree-optimization/19126] Missed IV optimization (redundant instruction in loop)
Date: Sun, 23 Jan 2005 16:03:00 -0000 [thread overview]
Message-ID: <20050123160345.5192.qmail@sourceware.org> (raw)
In-Reply-To: <20041222050828.19126.pinskia@gcc.gnu.org>
------- Additional Comments From steven at gcc dot gnu dot org 2005-01-23 16:03 -------
I get different asm for AMD64 as well:
.L4: | .L11:
movslq %r10d,%rax movslq %r10d,%rax
movslq %r11d,%rdx movslq %r11d,%rdx
incl %r9d incl %r9d
leaq (%rcx,%rax,4), %rax | leaq (%rsi,%rax), %rax
movss (%rbx,%rdx,4), %xmm0 | movss (%rbx,%rdx), %xmm0
addl %esi, %r11d | addl %ecx, %r11d
addl %r8d, %r10d addl %r8d, %r10d
cmpl %r9d, %edi cmpl %r9d, %edi
addss (%rax), %xmm0 addss (%rax), %xmm0
movss %xmm0, (%rax) movss %xmm0, (%rax)
jg .L4 | jg .L11
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19126
next prev parent reply other threads:[~2005-01-23 16:03 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-22 5:08 [Bug tree-optimization/19126] New: " pinskia at gcc dot gnu dot org
2004-12-28 23:54 ` [Bug tree-optimization/19126] " pinskia at gcc dot gnu dot org
2005-01-23 16:03 ` steven at gcc dot gnu dot org [this message]
2005-03-01 18:09 ` pinskia at gcc dot gnu dot org
2005-04-09 20:45 ` pinskia at gcc dot gnu dot org
2005-04-10 23:20 ` pinskia at gcc dot gnu dot org
2005-04-19 10:00 ` giovannibajo at libero dot it
2005-05-01 8:08 ` cvs-commit at gcc dot gnu dot org
2005-05-01 13:46 ` pinskia at gcc dot gnu dot org
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