2019-08-07  Martin Liska  <mliska@suse.cz>

	* fold-const.c (twoval_comparison_p): Replace int
	with bool as a return type.
	(simple_operand_p): Likewise.
	(operand_equal_p): Replace int with bool as a return type.
	* fold-const.h (operand_equal_p): Likewise.

From-SVN: r274161