https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61320
wangzheyu <tony.wang at arm dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tony.wang at arm dot com
--- Comment #64 from wangzheyu <tony.wang at arm dot com> ---
>
> Fix:
>
> Index: gcc/tree-ssa-loop-ivopts.c
> ===================================================================
> --- gcc/tree-ssa-loop-ivopts.c (revision 213050)
> +++ gcc/tree-ssa-loop-ivopts.c (working copy)
> @@ -1704,6 +1704,8 @@ may_be_unaligned_p (tree ref, tree step)
> return false;
>
> unsigned int align = TYPE_ALIGN (TREE_TYPE (ref));
> + if (GET_MODE_ALIGNMENT (TYPE_MODE (TREE_TYPE (ref))) > align)
> + align = GET_MODE_ALIGNMENT (TYPE_MODE (TREE_TYPE (ref)));
>
> unsigned HOST_WIDE_INT bitpos;
> unsigned int ref_align;
>
> can you test and apply that patch?
Also run into a similar regression on arm target, which will generate unaligned
memory access on target which don't support unaligned data access. This patch
does fix this regression.
Thx
