2007-06-14  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* trans.c (Attribute_to_gnu): Use fold_build1 instead
	of build1 for NEGATE_EXPR.
	(gnat_to_gnu): Likewise.

2007-05-12  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* trans.c (Attribute_to_gnu): When subtracting an
	offset from a pointer, use POINTER_PLUS_EXPR with
	NEGATE_EXPR instead of MINUS_EXPR.
	(gnat_to_gnu): Likewise.
	* utils.c (convert): When converting between
	thin pointers, use POINTER_PLUS_EXPR and sizetype
	for the offset.
	* utils2.c (known_alignment): POINTER_PLUS_EXPR
	have the same semantics as PLUS_EXPR for alignment.
	(build_binary_op): Add support for the semantics of
	POINTER_PLUS_EXPR's operands.
	When adding an offset to a pointer, use POINTER_PLUS_EXPR.


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