PR middle-end/35456
	* fold-const.c (fold_cond_expr_with_comparison): Prevent
	transformations for modes that have signed zeros.
	* ifcvt.c (noce_try_abs): Ditto.

testsuite/ChangeLog:

	PR middle-end/35456
	* gcc.c-torture/execute/pr35456.c: New test.

From-SVN: r132863