Fix GCOV CFG related issues.

2018-07-31  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/83813
        PR gcov-profile/84758
        PR gcov-profile/85217
        PR gcov-profile/85332
	* profile.c (branch_prob): Do not record GOTO expressions
        for GIMPLE statements which locations are already streamed.
2018-07-31  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/83813
        PR gcov-profile/84758
        PR gcov-profile/85217
        PR gcov-profile/85332
	* gcc.misc-tests/gcov-pr83813.c: New test.
	* gcc.misc-tests/gcov-pr84758.c: New test.
	* gcc.misc-tests/gcov-pr85217.c: New test.
	* gcc.misc-tests/gcov-pr85332.c: New test.

From-SVN: r263111