This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug target/21715] [4.0/4.1 regression] code-generation performance regression
- 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: 7 Jan 2006 18:41:59 -0000
- Subject: [Bug target/21715] [4.0/4.1 regression] code-generation performance regression
- References: <bug-21715-4672@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #7 from steven at gcc dot gnu dot org 2006-01-07 18:41 -------
GCC 4.1-20060107 still produces the code reported in the original bug report:
0000000000000000 <foo>:
0: 48 89 f8 mov %rdi,%rax
3: 48 f7 d8 neg %rax
6: 48 21 c7 and %rax,%rdi
9: 48 89 f8 mov %rdi,%rax
c: c3 retq
What patch may have fixed this on the trunk?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21715