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[Ada] Enrich ALFA cross references with the type of entity for parameters

From: Arnaud Charlet <charlet at adacore dot com>
To: gcc-patches at gcc dot gnu dot org
Cc: Yannick Moy <moy at adacore dot com>
Date: Thu, 4 Aug 2011 09:16:13 -0400
Subject: [Ada] Enrich ALFA cross references with the type of entity for parameters

In formal verification mode, in order to properly detect which parameters may
be read/written by a subprogram, a new information is added to ALFA cross
references.

Tested on x86_64-pc-linux-gnu, committed on trunk

2011-08-04  Yannick Moy  <moy@adacore.com>

	* alfa.ads (ALFA_Xref_Record): add component for type of entity
	* get_alfa.adb, put_alfa.adb: Read and write new component of
	cross-reference.
	* lib-xref-alfa.adb (Collect_ALFA): generate new component.

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