[Bug tree-optimization/88739] [7/8/9 Regression] Big-endian union bug

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88739

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot gnu.org

--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 45380
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45380&action=edit
patch

Can folks please test this on aarch64_be (and maybe arm_be as well to cover
the multi-word case aka WORDS_BIG_ENDIAN).

I've commented the BITS_BIG_ENDIAN parts but I think it will be necessary
for aarch64_be/arm_be so you should see the new testcase FAIL.

It should pass on powerpc BE and s390x.