PR tree-optimization/82965

	PR tree-optimization/82965
	PR tree-optimization/83991
	* cfgloopanal.c (expected_loop_iterations_unbounded): Add
	by_profile_only parameter.
	* cfgloopmanip.c (scale_loop_profile): Further scale loop's profile
        information if the loop was predicted to iterate too many times.
	* cfgloop.h (expected_loop_iterations_unbounded): Update prototype

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@259368 138bc75d-0d04-0410-961f-82ee72b054a4