gimple.c (gimple_canonical_types_compatible_p): Split out from gimple_types_compatibl...

gimple.c (gimple_canonical_types_compatible_p): Split out from gimple_types_compatible_p and friends.

2011-05-11  Richard Guenther  <rguenther@suse.de>

	* gimple.c (gimple_canonical_types_compatible_p): Split out
	from gimple_types_compatible_p and friends.  Do not recurse
	to pointed-to types.
	(gimple_canonical_type_eq): Use it.
	(iterative_hash_canonical_type): Split out from
	iterative_hash_gimple_type and friends.  Do not recurse
	to pointed-to types.
	(gimple_canonical_type_hash): Use it, allocate the hash here.

From-SVN: r173649