* tree-cfgcleanup.c (fixup_noreturn_call): Break out from ...;
	remove return value.
	(split_bbs_on_noreturn_calls) .... here.
	* tree-optimize.c (execute_fixup_cfg): Fixup noreturn calls too.
	* tree-flow.h (fixup_noreturn_call): New.
	* testsuite/gcc.dg/lto/noreturn-1_1.c: New testcase.
	* testsuite/gcc.dg/lto/noreturn-1_0.c: New testcase.

From-SVN: r160122