--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ada/libgnat/g-alvety.ads	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,148 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--            G N A T . A L T I V E C . V E C T O R _ T Y P E S             --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          Copyright (C) 2004-2017, 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.                                     --
+--                                                                          --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception,   --
+-- version 3.1, as published by the Free Software Foundation.               --
+--                                                                          --
+-- You should have received a copy of the GNU General Public License and    --
+-- a copy of the GCC Runtime Library Exception along with this program;     --
+-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
+-- <http://www.gnu.org/licenses/>.                                          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This unit exposes the various vector types part of the Ada binding to
+--  Altivec facilities.
+
+with GNAT.Altivec.Low_Level_Vectors;
+
+package GNAT.Altivec.Vector_Types is
+
+   ---------------------------------------------------
+   -- Vector type declarations [PIM-2.1 Data Types] --
+   ---------------------------------------------------
+
+   --  Except for assignments and pointer creation/dereference, operations
+   --  on vectors are only performed via subprograms. The vector types are
+   --  then private, and non-limited since assignments are allowed.
+
+   --  The Hard/Soft binding type-structure differentiation is achieved in
+   --  Low_Level_Vectors. Each version only exposes private vector types, that
+   --  we just sub-type here. This is fine from the design standpoint and
+   --  reduces the amount of explicit conversion required in various places
+   --  internally.
+
+   subtype vector_unsigned_char is Low_Level_Vectors.LL_VUC;
+   subtype vector_signed_char is Low_Level_Vectors.LL_VSC;
+   subtype vector_bool_char is Low_Level_Vectors.LL_VBC;
+
+   subtype vector_unsigned_short is Low_Level_Vectors.LL_VUS;
+   subtype vector_signed_short is Low_Level_Vectors.LL_VSS;
+   subtype vector_bool_short is Low_Level_Vectors.LL_VBS;
+
+   subtype vector_unsigned_int is Low_Level_Vectors.LL_VUI;
+   subtype vector_signed_int is Low_Level_Vectors.LL_VSI;
+   subtype vector_bool_int is Low_Level_Vectors.LL_VBI;
+
+   subtype vector_float is Low_Level_Vectors.LL_VF;
+   subtype vector_pixel is Low_Level_Vectors.LL_VP;
+
+   --  [PIM-2.1] shows groups of declarations with exact same component types,
+   --  e.g. vector unsigned short together with vector unsigned short int. It
+   --  so appears tempting to define subtypes for those matches here.
+   --
+   --  [PIM-2.1] does not qualify items in those groups as "the same types",
+   --  though, and [PIM-2.4.2 Assignments] reads: "if either the left hand
+   --  side or the right hand side of an expression has a vector type, then
+   --  both sides of the expression must be of the same vector type".
+   --
+   --  Not so clear what is exactly right, then. We go with subtypes for now
+   --  and can adjust later if need be.
+
+   subtype vector_unsigned_short_int is vector_unsigned_short;
+   subtype vector_signed_short_int is vector_signed_short;
+
+   subtype vector_char is vector_signed_char;
+   subtype vector_short is vector_signed_short;
+   subtype vector_int is vector_signed_int;
+
+   --------------------------------
+   -- Corresponding access types --
+   --------------------------------
+
+   type vector_unsigned_char_ptr is access all vector_unsigned_char;
+   type vector_signed_char_ptr is access all vector_signed_char;
+   type vector_bool_char_ptr is access all vector_bool_char;
+
+   type vector_unsigned_short_ptr is access all vector_unsigned_short;
+   type vector_signed_short_ptr is access all vector_signed_short;
+   type vector_bool_short_ptr is access all vector_bool_short;
+
+   type vector_unsigned_int_ptr is access all vector_unsigned_int;
+   type vector_signed_int_ptr is access all vector_signed_int;
+   type vector_bool_int_ptr is access all vector_bool_int;
+
+   type vector_float_ptr is access all vector_float;
+   type vector_pixel_ptr is access all vector_pixel;
+
+   --------------------------------------------------------------------
+   -- Additional access types, for the sake of some argument passing --
+   --------------------------------------------------------------------
+
+   --  ... because some of the operations expect pointers to possibly
+   --  constant objects.
+
+   type const_vector_bool_char_ptr     is access constant vector_bool_char;
+   type const_vector_signed_char_ptr   is access constant vector_signed_char;
+   type const_vector_unsigned_char_ptr is access constant vector_unsigned_char;
+
+   type const_vector_bool_short_ptr     is access constant vector_bool_short;
+   type const_vector_signed_short_ptr   is access constant vector_signed_short;
+   type const_vector_unsigned_short_ptr is access
+     constant vector_unsigned_short;
+
+   type const_vector_bool_int_ptr     is access constant vector_bool_int;
+   type const_vector_signed_int_ptr   is access constant vector_signed_int;
+   type const_vector_unsigned_int_ptr is access constant vector_unsigned_int;
+
+   type const_vector_float_ptr is access constant vector_float;
+   type const_vector_pixel_ptr is access constant vector_pixel;
+
+   ----------------------
+   -- Useful shortcuts --
+   ----------------------
+
+   subtype VUC is vector_unsigned_char;
+   subtype VSC is vector_signed_char;
+   subtype VBC is vector_bool_char;
+
+   subtype VUS is vector_unsigned_short;
+   subtype VSS is vector_signed_short;
+   subtype VBS is vector_bool_short;
+
+   subtype VUI is vector_unsigned_int;
+   subtype VSI is vector_signed_int;
+   subtype VBI is vector_bool_int;
+
+   subtype VP is vector_pixel;
+   subtype VF is vector_float;
+
+end GNAT.Altivec.Vector_Types;