This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug target/23451] [3.4/4.0/4.1/4.2 regression] Redundant reloading from stack frame
- From: "steven at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 10 Jan 2006 20:36:19 -0000
- Subject: [Bug target/23451] [3.4/4.0/4.1/4.2 regression] Redundant reloading from stack frame
- References: <bug-23451-5724@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- 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