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[Bug tree-optimization/66051] can't vectorize reductions inside an SLP group
- 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: Thu, 03 Dec 2015 11:27:28 +0000
- Subject: [Bug tree-optimization/66051] can't vectorize reductions inside an SLP group
- Auto-submitted: auto-generated
- References: <bug-66051-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66051
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Dec 3 11:26:56 2015
New Revision: 231225
URL: https://gcc.gnu.org/viewcvs?rev=231225&root=gcc&view=rev
Log:
2015-12-03 Richard Biener <rguenther@suse.de>
PR tree-optimization/66051
* tree-vect-slp.c (vect_build_slp_tree_1): Remove restriction
on load group size. Do not pass in vectorization_factor.
(vect_transform_slp_perm_load): Do not require any permute support.
(vect_build_slp_tree): Do not pass in vectorization factor.
(vect_analyze_slp_instance): Do not compute vectorization
factor estimate. Use vector size instead of vectorization factor
estimate to split store groups for BB vectorization.
* gcc.dg/vect/slp-42.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/vect/slp-42.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vect-slp.c