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[Bug rtl-optimization/36712] Inefficient loop unrolling
- From: "drow 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 Oct 2009 12:12:33 -0000
- Subject: [Bug rtl-optimization/36712] Inefficient loop unrolling
- References: <bug-36712-15361@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #7 from drow at gcc dot gnu dot org 2009-10-15 12:12 -------
I really would like to see this submitted - at least as a starting point for
discussion. You don't need to do anything different than for a small patch; if
you've missed any steps, a reviewer will tell you.
Another problem I noticed is that if RTL loop unrolling unrolls a loop, only
the first iteration will use auto-inc patterns. This leads to silly omissions
in the assembly.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36712