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[Bug target/64844] [5 Regression] Vectorization inhibited in gcc5 when loop starts with elem[1], aarch64 perf regression from 4.9.1
- 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, 29 Jan 2015 12:54:11 +0000
- Subject: [Bug target/64844] [5 Regression] Vectorization inhibited in gcc5 when loop starts with elem[1], aarch64 perf regression from 4.9.1
- Auto-submitted: auto-generated
- References: <bug-64844-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64844
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Jan 29 12:53:39 2015
New Revision: 220244
URL: https://gcc.gnu.org/viewcvs?rev=220244&root=gcc&view=rev
Log:
2015-01-29 Richard Biener <rguenther@suse.de>
PR tree-optimization/64844
* tree-vect-loop.c (vect_estimate_min_profitable_iters): Always
dump cost model analysis.
* tree-vect-data-refs.c (vect_enhance_data_refs_alignment):
Do not register adjusted load/store costs here.
* gcc.dg/vect/pr64844.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/vect/pr64844.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vect-data-refs.c
trunk/gcc/tree-vect-loop.c