PR middle-end/70843
	* fold-const.c (operand_equal_p): Don't verify hash value equality
	if arg0 == arg1.
	* tree.c (inchash::add_expr): Handle STATEMENT_LIST.  Ignore BLOCK
	and OMP_CLAUSE.

	* gcc.dg/pr70843.c: New test.

From-SVN: r235615