match.pd: Add tcc_comparison...

match.pd: Add tcc_comparison...

2014-11-13  Richard Biener  <rguenther@suse.de>

	* match.pd: Add tcc_comparison, inverted_tcc_comparison
	and inverted_tcc_comparison_with_nans operator lists.
	Use tcc_comparison in the truth_valued_p predicate definition.
	Restrict logical_inverted_value with bit_xor to integral types.
	Build a boolean true for simplifying x |^ !x because of
	vector types.  Implement patterns from forward_propagate_comparison
	* tree-ssa-forwprop.c (forward_propagate_comparison): Remove.
	(get_prop_dest_stmt): Likewise.
	(pass_forwprop::execute): Do not call it.
	* fold-const.c (fold_unary_loc): Remove the pattern here.

	* gcc.dg/tree-ssa/forwprop-28.c: Adjust.

From-SVN: r217496