More gcc/loop-unswitch.c cleanup.

	gcc/
	* cfgloop.h (unswitch_loops): Remove.
	* doc/passes.texi: Remove references to loop-unswitch.c
	* timevar.def (TV_LOOP_UNSWITCH): Remove.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@210156 138bc75d-0d04-0410-961f-82ee72b054a4
gcc:
        * config/epiphany/epiphany.c (epiphany_handle_interrupt_attribute):
        Emit an error when the function has arguments.
gcc/testsuite:
        * gcc.target/epiphany/isr-arg.c: New file.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@210157 138bc75d-0d04-0410-961f-82ee72b054a4