https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66917
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |6.0
Summary|[4.9/5/6 regression] ARM: |[4.9/5 regression] ARM:
|NEON: memcpy compiles to |NEON: memcpy compiles to
|vst1 with incorrect |vst1 with incorrect
|alignment due to SRA |alignment
Known to fail|6.0 |
--- Comment #19 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk sofar.
--- Comment #20 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Aug 3 07:13:36 2015
New Revision: 226487
URL: https://gcc.gnu.org/viewcvs?rev=226487&root=gcc&view=rev
Log:
2015-08-03 Richard Biener <rguent...@suse.de>
PR tree-optimization/66917
* tree-vectorizer.h (struct dataref_aux): Add base_element_aligned
field.
(DR_VECT_AUX): New macro.
(set_dr_misalignment): Adjust.
(dr_misalignment): Likewise.
* tree-vect-data-refs.c (vect_compute_data_ref_alignment):
Compute whether the base is at least element aligned.
* tree-vect-stmts.c (ensure_base_align): Adjust.
(vectorizable_store): If the base is not element aligned
preserve alignment of the original access if misalignment is unknown.
(vectorizable_load): Likewise.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-vect-data-refs.c
trunk/gcc/tree-vect-stmts.c
trunk/gcc/tree-vectorizer.h
