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[Bug target/29953] [SH-4] Perfomance regression in loops. cmp/eq used instead of dt
- From: "chrbr at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 15 May 2007 09:30:40 -0000
- Subject: [Bug target/29953] [SH-4] Perfomance regression in loops. cmp/eq used instead of dt
- References: <bug-29953-12348@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #6 from chrbr at gcc dot gnu dot org 2007-05-15 10:30 -------
I dropped the 4.1 and implemented a -finvert-loops option on the trunk.
This option allows a basic induction variable to be decremented instead of
incremented to support exit testing against 0.
I'm validating a patch on intel and sh.
--
chrbr at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |chrbr at gcc dot gnu dot org
|dot org |
Status|NEW |ASSIGNED
Last reconfirmed|2007-04-03 16:34:17 |2007-05-15 10:30:36
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29953