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From: "d dot g dot gorbachev at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/41340] [4.5 Regression] G++ produces different code with and without -g option
Date: Fri, 16 Oct 2009 20:10:00 -0000 [thread overview]
Message-ID: <20091016200954.19826.qmail@sourceware.org> (raw)
In-Reply-To: <bug-41340-16926@http.gcc.gnu.org/bugzilla/>
------- Comment #5 from d dot g dot gorbachev at gmail dot com 2009-10-16 20:09 -------
There is a real difference, i.e.
- 179: mov 0x8(%ebp),%edx
- 17c: movzwl (%edx),%eax
+ 179: mov 0x8(%ebp),%esi
+ 17c: movzwl (%esi),%eax
[...]
- 1a0: mov %edx,(%esp)
- 1a3: mov %edx,-0x24(%ebp)
- 1a6: call 1a7 <_Z8copy_rtxP7rtx_def+0x37>
- 1ab: mov %eax,%ecx
- 1ad: movzbl 0x3(%eax),%eax
- 1b1: mov %eax,%esi
- 1b3: and $0xffffffdf,%eax
[...]
+ 1a0: mov %esi,(%esp)
+ 1a3: call 1a4 <_Z8copy_rtxP7rtx_def+0x34>
+ 1a8: mov %eax,%edi
+ 1aa: movzbl 0x3(%eax),%eax
+ 1ae: mov %eax,%ecx
+ 1b0: and $0xffffffdf,%eax
+ 1b3: mov %al,0x3(%edi)
etc.
-fcompare-debug produces -fcompare-debug failure (length)
--
d dot g dot gorbachev at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |UNCONFIRMED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41340
next prev parent reply other threads:[~2009-10-16 20:10 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-11 21:33 [Bug other/41340] New: " d dot g dot gorbachev at gmail dot com
2009-09-11 21:33 ` [Bug other/41340] " d dot g dot gorbachev at gmail dot com
2009-09-12 11:54 ` rguenth at gcc dot gnu dot org
2009-09-18 9:22 ` [Bug debug/41340] " rguenth at gcc dot gnu dot org
2009-09-19 9:20 ` davek at gcc dot gnu dot org
2009-09-19 9:21 ` davek at gcc dot gnu dot org
2009-10-15 18:17 ` aoliva at gcc dot gnu dot org
2009-10-16 20:10 ` d dot g dot gorbachev at gmail dot com [this message]
2009-10-16 20:12 ` d dot g dot gorbachev at gmail dot com
2009-10-19 17:05 ` jakub at gcc dot gnu dot org
2009-10-19 17:14 ` jakub at gcc dot gnu dot org
2009-10-19 18:35 ` jakub at gcc dot gnu dot org
2009-10-20 9:40 ` jakub at gcc dot gnu dot org
2009-10-20 13:29 ` jakub at gcc dot gnu dot org
2009-10-20 14:32 ` jakub at gcc dot gnu dot org
2009-10-23 9:16 ` [Bug debug/41340] [4.5 Regression] GCC " d dot g dot gorbachev at gmail dot com
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