exp_ch4.adb (Insert_Dereference_Action): Reimplemented.

exp_ch4.adb (Insert_Dereference_Action): Reimplemented.

2012-05-15  Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_ch4.adb (Insert_Dereference_Action): Reimplemented. The
	routine performs address and size adjustments for dereferences
	of heap-allocated controlled objects. This manipulation is needed
	in order to restore the original state of the memory at the time
	it was allocated by the finalization machinery.
	* rtsfind.ads: Add RE_Adjust_Controlled_Dereference to tables
	RE_Id and RE_Unit_Table.
	* sinfo.adb (Has_Dereference_Action): New routine.
	(Set_Has_Dereference_Action): New routine.
	* sinfo.ads: Add new semantic flag Has_Dereference_Action along
	its association in nodes.
	(Has_Dereference_Action): New routine and pragma Inline.
	(Set_Has_Dereference_Action): New routine and pragma Inline.
	* s-stposu.ads, s-stposu.adb (Adjust_Controlled_Dereference): New
	routine.

From-SVN: r187530