Richard Guenther  <rguenther@suse.de>

	* tree.h (constant_boolean_node): Adjust prototype.
	* fold-const.c (fold_convert_loc): Move aggregate conversion
	leeway down.
	(constant_boolean_node): Make value parameter boolean, add
	vector type handling.
	(fold_unary_loc): Use constant_boolean_node.
	(fold_binary_loc): Preserve types properly when folding
	COMPLEX_EXPR <__real x, __imag x>.
	* gimplify.c (gimplify_expr): Handle vector comparison.
	* tree.def (EQ_EXPR, ...): Document behavior on vector typed
	comparison.
	* tree-cfg.c (verify_gimple_comparison): Verify vector typed
	comparisons.

From-SVN: r178209