Make mode_for_size_tree return an opt_mode
...for consistency with mode_for_size
2017-09-05 Richard Sandiford <richard.sandiford@linaro.org>
gcc/
* stor-layout.h (mode_for_size_tree): Return an opt_mode.
* stor-layout.c (mode_for_size_tree): Likewise.
(mode_for_array): Update accordingly.
(layout_decl): Likewise.
(compute_record_mode): Likewise. Only set the mode once.
gcc/ada/
* gcc-interface/utils.c (make_packable_type): Update call to
mode_for_size_tree.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@251732 138bc75d-0d04-0410-961f-82ee72b054a4