https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99143
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2021-02-17
Status|UNCONFIRMED |WAITING
Ever confirmed|0 |1
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
are you complaining that the objects j and z are aligned in the object file as
8 bytes? Or that aj, az have the value of 1?
Both are valid things to do.
This is the code which does exactly that GCC:
/* Align definitions of arrays, unions and structures so that
initializations and copies can be made more efficient. This is not
ABI-changing, so it only affects places where we can see the
definition. Increasing the alignment tends to introduce padding,
so don't do this when optimizing for size/conserving stack space. */
#define AARCH64_EXPAND_ALIGNMENT(COND, EXP, ALIGN) \
(((COND) && ((ALIGN) < BITS_PER_WORD) \
&& (TREE_CODE (EXP) == ARRAY_TYPE \
|| TREE_CODE (EXP) == UNION_TYPE \
|| TREE_CODE (EXP) == RECORD_TYPE)) ? BITS_PER_WORD : (ALIGN))
