This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug tree-optimization/66917] [4.9/5 regression] ARM: NEON: memcpy compiles to vst1 with incorrect alignment
- 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: Mon, 28 Sep 2015 10:46:27 +0000
- Subject: [Bug tree-optimization/66917] [4.9/5 regression] ARM: NEON: memcpy compiles to vst1 with incorrect alignment
- Auto-submitted: auto-generated
- References: <bug-66917-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66917
--- Comment #22 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Sep 28 10:45:55 2015
New Revision: 228199
URL: https://gcc.gnu.org/viewcvs?rev=228199&root=gcc&view=rev
Log:
2015-09-28 Richard Biener <rguenther@suse.de>
Backport from mainline
2015-08-03 Richard Biener <rguenther@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.
2015-09-16 Richard Biener <rguenther@suse.de>
PR middle-end/67442
* fold-const.c (extract_muldiv_1): Properly extend multiplication
result before builting a tree via wide_int_to_tree.
* gcc.dg/torture/pr67442.c: New testcase.
Added:
branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr67442.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/fold-const.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
branches/gcc-5-branch/gcc/tree-vect-data-refs.c
branches/gcc-5-branch/gcc/tree-vect-stmts.c
branches/gcc-5-branch/gcc/tree-vectorizer.h