PR middle-end/36194
        * combine.c (check_conversion): Rename to check_promoted_subreg. 
        Don't call record_truncated_value from here. 
        (record_truncated_value): Turn it into a for_each_rtx callback. 
        (record_truncated_values): New function. 
        (combine_instructions): Call note_uses with 
        record_truncated_values.  Change name of check_conversion to 
        check_promoted_subreg. 

testsuite/

	* gcc.dg/pr36194.c: New test.

From-SVN: r135392