trans.c (call_to_gnu): Return an expression with a COMPOUND_EXPR including the call instead of...

2007-04-06  Olivier Hainque  <hainque@adacore.com>
	    Eric Botcazou <botcazou@adacore.com>

	* trans.c (call_to_gnu) <TYPE_RETURNS_BY_TARGET_PTR_P>: Return an
	expression with a COMPOUND_EXPR including the call instead of emitting
	the call directly here.
	(gnat_to_gnu) <N_Slice>: Do not return a non-constant low bound if the
	high bound is constant and the slice is empty.  Tidy.
	(tree_transform, case N_Op_Not): Handle properly the case where the
	operation applies to a private type whose full view is a modular type.
	(Case_Statement_To_gnu): If an alternative is an E_Constant with an
	Address_Clause, use the associated Expression as the GNAT tree
	representing the choice value to ensure the corresponding GCC tree is
	of the proper kind.
	(maybe_stabilize_reference): Stabilize COMPOUND_EXPRs as a whole
	instead of just the operands, as the base GCC stabilize_reference does.
	<CALL_EXPR>: New case. Directly stabilize the call if an lvalue is not
	requested; otherwise fail.
	(addressable_p) <COMPONENT_REF>: Do not test DECL_NONADDRESSABLE_P.

From-SVN: r123608