gcc/

gcc/
	* hooks.h (hook_bool_mode_uhwi_false): Declare.
	* hooks.c (hook_bool_mode_uhwi_false): New function.
	* target.def (array_mode_supported_p): New hook.
	* doc/tm.texi.in (TARGET_ARRAY_MODE_SUPPORTED_P): Add @hook.
	* doc/tm.texi: Regenerate.
	* stor-layout.c (mode_for_array): New function.
	(layout_type): Use it.
	* config/arm/arm.c (arm_array_mode_supported_p): New function.
	(TARGET_ARRAY_MODE_SUPPORTED_P): Define.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@173290 138bc75d-0d04-0410-961f-82ee72b054a4