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[Ada] Generate internal interface entities compiling with -gnatc

From: Arnaud Charlet <charlet at adacore dot com>
To: gcc-patches at gcc dot gnu dot org
Cc: Javier Miranda <miranda at adacore dot com>
Date: Wed, 29 Jul 2009 12:34:23 +0200
Subject: [Ada] Generate internal interface entities compiling with -gnatc

This patch does not modify the functionality of the compiler. It moves
the generation of internal interface entities associated with interfaces
to the semantic analyzer. Done to provide ASIS with such information.
These internal entities provide the relationship between the interface
primitives and the tagged type primitives that cover them.

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

2009-07-29  Javier Miranda  <miranda@adacore.com>

	* sem_ch3.ads, sem_ch3.adb (Add_Internal_Interface_Entities): Routine
	moved from the expander to the semantic analyzer to allow the
	generation of these internal entities when compiling with no code
	generation. Required by ASIS.
	* sem.adb (Analyze): Add processing for N_Freeze_Entity nodes.
	* sem_ch13.ads, sem_ch13.adb (Analyze_Freeze_Entity): New subprogram.
	* exp_ch3.adb (Add_Internal_Interface_Entities): Moved to sem_ch3
	(Expand_Freeze_Record_Type): Remove call to
	Add_Internal_Interface_Entities because this routine is now called at
	early stage --when the freezing node is analyzed.

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