2006-06-15 Richard Guenther <rguenther@suse.de>

2006-06-15  Richard Guenther  <rguenther@suse.de>

	* fold-const.c (fold_truth_not_expr): Rename from
	invert_truthvalue.  Give it fold_* semantics to avoid
	generating garbage.
	(invert_truthvalue): New function.  Wrapper around
	fold_truth_not_expr.
	(optimize_minmax_comparison): Avoid creating garbage.
	(fold_unary): Use fold_truth_not_expr for folding
	TRUTH_NOT_EXPR.
	(fold_ternary): Replace uses of invert_truthvalue with
	fold_truth_not_expr where applicable.
	* tree.h (fold_truth_not_expr): Prototype.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@114683 138bc75d-0d04-0410-961f-82ee72b054a4