fold-const.c (fold_comparison): Remove redundant constant folding and operand swapping.

fold-const.c (fold_comparison): Remove redundant constant folding and operand swapping.

2014-10-17  Richard Biener  <rguenther@suse.de>

	* fold-const.c (fold_comparison): Remove redundant constant
	folding and operand swapping.
	(fold_binary_loc): Do comparison operand swapping here.
	(fold_ternary_loc): Canonicalize operand order for
	commutative ternary operations.
	* tree.c (commutative_ternary_tree_code): Add DOT_PROD_EXPR
	and FMA_EXPR.

From-SVN: r216394