2013-10-17 Thomas Quinot <quinot@adacore.com>

	* exp_util.adb (Get_Current_Value_Condition,
	Set_Current_Value_Condition): Handle the case of expressions
	with actions * exp_util.adb (Insert_Actions): Handle the case
	of an expression with actions whose Actions list is empty.
	* exp_util.adb (Remove_Side_Effects.Side_Effect_Free): An
	expression with actions that has no Actions and whose Expression
	is side effect free is itself side effect free.
	* exp_util.adb (Remove_Side_Effects): Do not set an incorrect etype on
	temporary 'R' (Def_Id), which is in general an access to Exp_Type, not
	an Exp_Type.
	* sem_res.adb (Resolve): For an expression with
	actions, resolve the expression early.	* sem_res.adb
	(Resolve_Expression_With_Actions): Rewrite an expression with
	actions whose value is compile time known and which has no
	actions into just its expression, so that its constant value is
	available downstream.
	* sem_res.adb (Resolve_Short_Circuit):
	Wrap the left operand in an expression with actions to contain
	any required finalization actions.
	* exp_ch4.adb (Expand_Expression_With_Actions): For an
	expression with actions returning a Boolean expression, ensure
	any finalization action is kept within the Actions list.
	* sem_warn.adb (Check_References, Check_Unset_Reference): add
	missing circuitry to handle expressions with actions.
	* checks.adb (Ensure_Valid): For an expression with actions,
	insert the validity check on the Expression.
	* sem_ch13.adb (Build_Static_Predicate.Get_RList): An expression
	with actions that has a non-empty Actions list is not static. An
	expression with actions that has an empty Actions list has the
	static ranges of its Expression.
	* sem_util.adb (Has_No_Obvious_Side_Effects): An expression with
	actions with an empty Actions list has no obvious side effects
	if its Expression itsekf has no obvious side effects.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@203763 138bc75d-0d04-0410-961f-82ee72b054a4

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