2006-10-28  Richard Guenther  <rguenther@suse.de>

	PR middle-end/26899
	* fold-const.c (maybe_canonicalize_comparison_1): Helper
	for maybe_canonicalize_comparison.
	(maybe_canonicalize_comparison): New function for canonicalizing
	comparison trees.
	(fold_comparison): Call it to canonicalize comparisons with
	constants involved.

	* gcc.dg/tree-ssa/pr26899.c: New testcase.

From-SVN: r118106