re PR middle-end/50907 (EDGE_CROSSING incorrectly set across same section with -freorder-blocks-and-partition -fPIC -fprofile-use)

	PR middle-end/50907
	* function.c (convert_jumps_to_returns): When redirecting an edge
	succ to EXIT_BLOCK_PTR, clear EDGE_CROSSING flag.

	* gcc.dg/tree-prof/pr50907.c: New test.

From-SVN: r181787