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Diffstat (limited to 'gcc-4.9/gcc/ada/g-ssvety.ads')
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1 files changed, 105 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/ada/g-ssvety.ads b/gcc-4.9/gcc/ada/g-ssvety.ads new file mode 100644 index 000000000..c40706474 --- /dev/null +++ b/gcc-4.9/gcc/ada/g-ssvety.ads @@ -0,0 +1,105 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT COMPILER COMPONENTS -- +-- -- +-- G N A T . S S E . V E C T O R _ T Y P E S -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 2009, 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 Ada __m128 like data types to represent the contents +-- of SSE registers, for use by bindings to the SSE intrinsic operations. + +-- See GNAT.SSE for the list of targets where this facility is supported + +package GNAT.SSE.Vector_Types is + + -- The reference guide states a few usage guidelines for the C types: + + -- Since these new data types are not basic ANSI C data types, you + -- must observe the following usage restrictions: + -- + -- * Use new data types only on either side of an assignment, as a + -- return value, or as a parameter. You cannot use it with other + -- arithmetic expressions ("+", "-", and so on). + -- + -- * Use new data types as objects in aggregates, such as unions to + -- access the byte elements and structures. + -- + -- * Use new data types only with the respective intrinsics described + -- in this documentation. + + type m128 is private; -- SSE >= 1 + type m128d is private; -- SSE >= 2 + type m128i is private; -- SSE >= 2 + +private + -- Each of the m128 types maps to a specific vector_type with an extra + -- "may_alias" attribute as in GCC's definitions for C, for instance in + -- xmmintrin.h: + + -- /* The Intel API is flexible enough that we must allow aliasing + -- with other vector types, and their scalar components. */ + -- typedef float __m128 + -- __attribute__ ((__vector_size__ (16), __may_alias__)); + + -- /* Internal data types for implementing the intrinsics. */ + -- typedef float __v4sf __attribute__ ((__vector_size__ (16))); + + ------------ + -- m128 -- + ------------ + + -- The __m128 data type can hold four 32-bit floating-point values + + type m128 is array (1 .. 4) of Float32; + for m128'Alignment use VECTOR_ALIGN; + pragma Machine_Attribute (m128, "vector_type"); + pragma Machine_Attribute (m128, "may_alias"); + + ------------- + -- m128d -- + ------------- + + -- The __m128d data type can hold two 64-bit floating-point values + + type m128d is array (1 .. 2) of Float64; + for m128d'Alignment use VECTOR_ALIGN; + pragma Machine_Attribute (m128d, "vector_type"); + pragma Machine_Attribute (m128d, "may_alias"); + + ------------- + -- m128i -- + ------------- + + -- The __m128i data type can hold sixteen 8-bit, eight 16-bit, four 32-bit, + -- or two 64-bit integer values. + + type m128i is array (1 .. 2) of Integer64; + for m128i'Alignment use VECTOR_ALIGN; + pragma Machine_Attribute (m128i, "vector_type"); + pragma Machine_Attribute (m128i, "may_alias"); + +end GNAT.SSE.Vector_Types; |