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Diffstat (limited to 'gcc/ada/exp_alfa.ads')
| -rw-r--r-- | gcc/ada/exp_alfa.ads | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/gcc/ada/exp_alfa.ads b/gcc/ada/exp_alfa.ads new file mode 100644 index 00000000000..a5c07864be1 --- /dev/null +++ b/gcc/ada/exp_alfa.ads @@ -0,0 +1,52 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT COMPILER COMPONENTS -- +-- -- +-- E X P _ A L F A -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 2011, Free Software Foundation, Inc. -- +-- -- +-- GNAT is free software; you can redistribute it and/or modify it under -- +-- terms of the GNU General Public License as published by the Free Soft- -- +-- ware Foundation; either version 3, or (at your option) any later ver- -- +-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- +-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- +-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- +-- for more details. You should have received a copy of the GNU General -- +-- Public License distributed with GNAT; see file COPYING3. If not, go to -- +-- http://www.gnu.org/licenses for a complete copy of the license. -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- +-- -- +------------------------------------------------------------------------------ + +-- This package implements a light expansion which is used in formal +-- verification mode. Instead of a complete expansion of nodes for code +-- generation, this Alfa expansion targets generation of intermediate code +-- for formal verification. + +-- Expand_Alfa is called directly by Expander.Expand. + +-- Alfa expansion has three main objectives: + +-- 1. Perform limited expansion to explicit some Ada rules and constructs +-- (translate 'Old and 'Result, replace renamings by renamed, insert +-- conversions, expand actuals in calls to introduce temporaries) + +-- 2. Facilitate treatment for the formal verification back-end (fully +-- qualify names) + +-- 3. Avoid the introduction of low-level code that is difficult to analyze +-- formally, as typically done in the full expansion for high-level +-- constructs (tasking, dispatching) + +with Types; use Types; + +package Exp_Alfa is + + procedure Expand_Alfa (N : Node_Id); + +end Exp_Alfa; |