This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug rtl-optimization/37948] [4.4 Regression] IRA generates slower code for -mtune=core2
- From: "hjl dot tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 30 Oct 2008 22:51:21 -0000
- Subject: [Bug rtl-optimization/37948] [4.4 Regression] IRA generates slower code for -mtune=core2
- References: <bug-37948-682@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #6 from hjl dot tools at gmail dot com 2008-10-30 22:51 -------
(In reply to comment #5)
> So, is this a target issue or a register allocator issue now? Has the costs
> fix
> been applied?
>
It is an IRA issue since -fno-ira is still faster with -mtune=generic.
IRA should be fixed first before changing Core 2 cost.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37948