Hi,

this is a regression present on mainline, 11 and 10 branches: on bare-metal 
platforms, the Ada compiler emulates stack checking (it is required by the 
language and tested by ACATS) in the runtime via the stack_check_libfunc hook 
of the RTL middle-end.  Calls to the function are generated as libcalls but 
they now require a proper function type at -O2 or above.

Tested on powerpc-elf, OK for mainline, 11 and 10 branches?


2021-10-01  Eric Botcazou  <ebotcazou@adacore.com>

	* explow.c: Include langhooks.h.
	(set_stack_check_libfunc): Build a proper function type.

-- 
Eric Botcazou