https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114676
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |iii at gcc dot gnu.org,
| |jakub at gcc dot gnu.org,
| |krebbel at gcc dot gnu.org
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #1)
> /* Build a vector type with the alignment of the target
> location in order to enable correct alignment hints to be
> generated for vst. */
> tree mem_type = build_aligned_type (TREE_TYPE((*arglist)[0]),
> TYPE_ALIGN (TREE_TYPE (TREE_TYPE
> ((*arglist)[2]))));
> return build2 (MODIFY_EXPR, mem_type,
> build1 (INDIRECT_REF, mem_type,
> fold_build_pointer_plus ((*arglist)[2],
> (*arglist)[1])),
> (*arglist)[0]);
>
>
> Does -fno-strict-aliasing help? I wonder if the above (which is
> S390_OVERLOADED_BUILTIN_s390_vec_xst from s390_expand_overloaded_builtin)
> should be have an may_alias variant .
Building MEM_REF is one option, another one is to cast the operand of
INDIRECT_REF to
build_pointer_type (mem_type, VOIDmode, true) type.
