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[Bug rtl-optimization/69710] performance issue with SP Linpack with Autovectorization
- From: "amker at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 09 Feb 2016 16:16:45 +0000
- Subject: [Bug rtl-optimization/69710] performance issue with SP Linpack with Autovectorization
- Auto-submitted: auto-generated
- References: <bug-69710-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69710
--- Comment #7 from amker at gcc dot gnu.org ---
Hmm, the first problem is the two iv uses from dy load/store are not recognized
as having same base address/object. This may caused by my patch disabling
expansion of iv base. Or it exists all the time. This isn't critical, we can
transform it on aaarch64 anyway.
Another problem is more important that dx mem ref is not recognized as address
type.