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This patch adds infrastructure for addition of SIMD

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declarations for math functions in math.h. Added new headers math-vector.h
(only generic version for now) and libm-simd-decl-stubs.h with empty
definitions required for proper unfolding of new macros __MATHCALL_VEC which
will be used for declaration of vector math functions.

2015-05-14  Andrew Senkevich  <andrew.senkevich@intel.com>

    * bits/math-vector.h: New file.
    * bits/libm-simd-decl-stubs.h: New header.
    * math/Makefile (headers): Added new header libm-simd-decl-stubs.h.
    * math/math.h (__MATHCALL_VEC): New macro.
This commit is contained in:
Andrew Senkevich 2015-05-14 17:26:49 +03:00
parent 58c50f06aa
commit 202d48dab9
5 changed files with 84 additions and 1 deletions
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6
ChangeLog
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@ -1,5 +1,11 @@
2015-05-14 Andrew Senkevich <andrew.senkevich@intel.com>
* bits/math-vector.h: New file.
* bits/libm-simd-decl-stubs.h: New header.
* math/Makefile (headers): Added new header
libm-simd-decl-stubs.h.
* math/math.h (__MATHCALL_VEC): New macro.
* math/gen-libm-have-vector-test.sh: Script generates series of macros
for conditions in testing functions.
* math/Makefile: Added call of libm-have-vector-test.sh.

40
bits/libm-simd-decl-stubs.h Normal file
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@ -0,0 +1,40 @@
/* Empty definitions required for __MATHCALL_VEC unfolding in mathcalls.h.
Copyright (C) 2014-2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _MATH_H
# error "Never include <bits/libm-simd-decl-stubs.h> directly;\
include <math.h> instead."
#endif
/* Needed definitions could be generated with:
for func in $(grep __MATHCALL_VEC math/bits/mathcalls.h |\
sed -r "s|__MATHCALL_VEC.?\(||; s|,.*||"); do
echo "#define __DECL_SIMD_${func}";
echo "#define __DECL_SIMD_${func}f";
echo "#define __DECL_SIMD_${func}l";
done
*/
#ifndef _BITS_LIBM_SIMD_DECL_STUBS_H
#define _BITS_LIBM_SIMD_DECL_STUBS_H 1
#define __DECL_SIMD_cos
#define __DECL_SIMD_cosf
#define __DECL_SIMD_cosl
#endif

27
bits/math-vector.h Normal file
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@ -0,0 +1,27 @@
/* Platform-specific SIMD declarations of math functions.
Copyright (C) 2014-2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _MATH_H
# error "Never include <bits/math-vector.h> directly;\
include <math.h> instead."
#endif
/* Get default empty definitions required for __MATHCALL_VEC unfolding.
Plaform-specific analogue of this header should redefine them with specific
SIMD declarations. */
#include <bits/libm-simd-decl-stubs.h>

3
math/Makefile
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@ -26,7 +26,8 @@ headers := math.h bits/mathcalls.h bits/mathinline.h bits/huge_val.h \
bits/huge_valf.h bits/huge_vall.h bits/inf.h bits/nan.h \
fpu_control.h complex.h bits/cmathcalls.h fenv.h \
bits/fenv.h bits/fenvinline.h bits/mathdef.h tgmath.h \
bits/math-finite.h
bits/math-finite.h bits/math-vector.h \
bits/libm-simd-decl-stubs.h
# FPU support code.
aux := setfpucw fpu_control

9
math/math.h
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@ -27,6 +27,9 @@
__BEGIN_DECLS
/* Get machine-dependent vector math functions declarations. */
#include <bits/math-vector.h>
/* Get machine-dependent HUGE_VAL value (returned on overflow).
On all IEEE754 machines, this is +Infinity. */
#include <bits/huge_val.h>
@ -49,6 +52,12 @@ __BEGIN_DECLS
so we can easily declare each function as both `name' and `__name',
and can declare the float versions `namef' and `__namef'. */
#define __SIMD_DECL(function) __CONCAT (__DECL_SIMD_, function)
#define __MATHCALL_VEC(function, suffix, args) \
__SIMD_DECL (__MATH_PRECNAME (function, suffix)) \
__MATHCALL (function, suffix, args)
#define __MATHCALL(function,suffix, args) \
__MATHDECL (_Mdouble_,function,suffix, args)
#define __MATHDECL(type, function,suffix, args) \