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[Bug target/32523] disastrous scheduling for POWER5
- From: "whaley at cs dot utsa dot edu" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 28 Jun 2007 14:18:19 -0000
- Subject: [Bug target/32523] disastrous scheduling for POWER5
- References: <bug-32523-12761@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #8 from whaley at cs dot utsa dot edu 2007-06-28 14:18 -------
I've been doing further testing on the g5 (the only machine where I have local
and root access), and this problem does not occur with stock gcc 4.1.1 either.
Therefore, whatever problem is avoided by throwing -fno-schedule-insns was not
in 4.1.1.
BTW, as on the Power5, the best kernel does not get all it's performance back
by throwing this flag, even though the simplified example does.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32523