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[Bug tree-optimization/49730] loop not vectorized if inside another loop
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 13 Jul 2011 11:23:48 +0000
- Subject: [Bug tree-optimization/49730] loop not vectorized if inside another loop
- Auto-submitted: auto-generated
- References: <bug-49730-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49730
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Keywords| |missed-optimization
Last reconfirmed| |2011.07.13 11:23:16
CC| |irar at gcc dot gnu.org
Ever Confirmed|0 |1
Severity|normal |enhancement
--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-07-13 11:23:16 UTC ---
All inner loops are simply completely unrolled which eliminates the s array.
Then we end up with a loop with two reductions which cannot be vectorized
right now.