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aarch/fpu: use generic builtins based math functions

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introduce sysdep header math-use-builtins.h to replace aarch64
implementations with corresponding generic ones.

 - newly inroduced generic sqrt{,f}, fma{,f}
 - existing floor{,f}, nearbyint{,f}, rint{,f}, round{,f}, trunc{,f}
 - Note that generic copysign was already enabled (via generic
   math-use-builtins.h) now thru sysdep header

Tested with build-many-glibcs for aarch64-linux-gnu

This is a non functional change and aarch64 libm before/after was
byte invariant as compared below:

| cd /SCRATCH/vgupta/gnu/install-glibc-A-baseline
| for i in `find . -name libm-2.31.9000.so`; do
|   echo $i; diff $i /SCRATCH/vgupta/gnu/install-glibc-C-reduce-scope/$i ;
|   echo $?;
| done

| ./aarch64-linux-gnu/lib64/libm-2.31.9000.so
| 0
| ./arm-linux-gnueabi/lib/libm-2.31.9000.so
| 0
| ./x86_64-linux-gnu/lib64/libm-2.31.9000.so
| 0
| ./arm-linux-gnueabihf/lib/libm-2.31.9000.so
| 0
| ./riscv64-linux-gnu-rv64imac-lp64/lib64/lp64/libm-2.31.9000.so
| 0
| ./riscv64-linux-gnu-rv64imafdc-lp64/lib64/lp64/libm-2.31.9000.so
| 0
| ./powerpc-linux-gnu/lib/libm-2.31.9000.so
| 0
| ./microblaze-linux-gnu/lib/libm-2.31.9000.so
| 0
| ./nios2-linux-gnu/lib/libm-2.31.9000.so
| 0
| ./hppa-linux-gnu/lib/libm-2.31.9000.so
| 0
| ./s390x-linux-gnu/lib64/libm-2.31.9000.so
| 0

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
This commit is contained in:
Vineet Gupta 2020-05-29 16:06:59 -07:00
parent 628d90c5f9
commit c9feb1be93
15 changed files with 71 additions and 398 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
sysdeps/aarch64/fpu/e_sqrt.c
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@ -1,27 +0,0 @@
/* Square root of floating point number.
Copyright (C) 2015-2020 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
<https://www.gnu.org/licenses/>. */
#include <math_private.h>
#include <libm-alias-finite.h>
double
__ieee754_sqrt (double d)
{
return __builtin_sqrt (d);
}
libm_alias_finite (__ieee754_sqrt, __sqrt)

27
sysdeps/aarch64/fpu/e_sqrtf.c
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@ -1,27 +0,0 @@
/* Single-precision floating point square root.
Copyright (C) 2015-2020 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
<https://www.gnu.org/licenses/>. */
#include <math_private.h>
#include <libm-alias-finite.h>
float
__ieee754_sqrtf (float s)
{
return __builtin_sqrtf (s);
}
libm_alias_finite (__ieee754_sqrtf, __sqrtf)

71
sysdeps/aarch64/fpu/math-use-builtins.h Normal file
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@ -0,0 +1,71 @@
/* Using math gcc builtins instead of generic implementation. aarch64 version.
Copyright (C) 2020 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
<https://www.gnu.org/licenses/>. */
#ifndef MATH_USE_BUILTINS_H
#define MATH_USE_BUILTINS_H 1
#include <features.h> /* For __GNUC_PREREQ. */
/* Define these macros to 1 to use __builtin_xyz instead of the
generic implementation. */
#define USE_NEARBYINT_BUILTIN 1
#define USE_NEARBYINTF_BUILTIN 1
#define USE_NEARBYINTL_BUILTIN 0
#define USE_NEARBYINTF128_BUILTIN 0
#define USE_RINT_BUILTIN 1
#define USE_RINTF_BUILTIN 1
#define USE_RINTL_BUILTIN 0
#define USE_RINTF128_BUILTIN 0
#define USE_FLOOR_BUILTIN 1
#define USE_FLOORF_BUILTIN 1
#define USE_FLOORL_BUILTIN 0
#define USE_FLOORF128_BUILTIN 0
#define USE_CEIL_BUILTIN 1
#define USE_CEILF_BUILTIN 1
#define USE_CEILL_BUILTIN 0
#define USE_CEILF128_BUILTIN 0
#define USE_TRUNC_BUILTIN 1
#define USE_TRUNCF_BUILTIN 1
#define USE_TRUNCL_BUILTIN 0
#define USE_TRUNCF128_BUILTIN 0
#define USE_ROUND_BUILTIN 1
#define USE_ROUNDF_BUILTIN 1
#define USE_ROUNDL_BUILTIN 0
#define USE_ROUNDF128_BUILTIN 0
#define USE_COPYSIGNL_BUILTIN 1
#if __GNUC_PREREQ (7, 0)
# define USE_COPYSIGNF128_BUILTIN 1
#else
# define USE_COPYSIGNF128_BUILTIN 0
#endif
#define USE_SQRT_BUILTIN 1
#define USE_SQRTF_BUILTIN 1
#define USE_FMA_BUILTIN 1
#define USE_FMAF_BUILTIN 1
#define USE_FMAL_BUILTIN 0
#define USE_FMAF128_BUILTIN 0
#endif

29
sysdeps/aarch64/fpu/s_floor.c
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@ -1,29 +0,0 @@
/* Copyright (C) 2011-2020 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
<https://www.gnu.org/licenses/>. */
#define NO_MATH_REDIRECT
#include <math.h>
#include <libm-alias-double.h>
double
__floor (double x)
{
return __builtin_floor (x);
}
libm_alias_double (__floor, floor)

29
sysdeps/aarch64/fpu/s_floorf.c
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@ -1,29 +0,0 @@
/* Copyright (C) 2011-2020 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
<https://www.gnu.org/licenses/>. */
#define NO_MATH_REDIRECT
#include <math.h>
#include <libm-alias-float.h>
float
__floorf (float x)
{
return __builtin_floorf (x);
}
libm_alias_float (__floor, floor)

28
sysdeps/aarch64/fpu/s_fma.c
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@ -1,28 +0,0 @@
/* Copyright (C) 1996-2020 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
<https://www.gnu.org/licenses/>. */
#include <math.h>
#include <libm-alias-double.h>
double
__fma (double x, double y, double z)
{
return __builtin_fma (x, y, z);
}
libm_alias_double (__fma, fma)

28
sysdeps/aarch64/fpu/s_fmaf.c
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@ -1,28 +0,0 @@
/* Copyright (C) 2011-2020 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
<https://www.gnu.org/licenses/>. */
#include <math.h>
#include <libm-alias-float.h>
float
__fmaf (float x, float y, float z)
{
return __builtin_fmaf (x, y, z);
}
libm_alias_float (__fma, fma)

28
sysdeps/aarch64/fpu/s_nearbyint.c
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@ -1,28 +0,0 @@
/* Copyright (C) 2011-2020 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
<https://www.gnu.org/licenses/>. */
#include <math.h>
#include <libm-alias-double.h>
double
__nearbyint (double x)
{
return __builtin_nearbyint (x);
}
libm_alias_double (__nearbyint, nearbyint)

28
sysdeps/aarch64/fpu/s_nearbyintf.c
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@ -1,28 +0,0 @@
/* Copyright (C) 2011-2020 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
<https://www.gnu.org/licenses/>. */
#include <math.h>
#include <libm-alias-float.h>
float
__nearbyintf (float x)
{
return __builtin_nearbyintf (x);
}
libm_alias_float (__nearbyint, nearbyint)

29
sysdeps/aarch64/fpu/s_rint.c
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@ -1,29 +0,0 @@
/* Copyright (C) 2011-2020 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
<https://www.gnu.org/licenses/>. */
#define NO_MATH_REDIRECT
#include <math.h>
#include <libm-alias-double.h>
double
__rint (double x)
{
return __builtin_rint (x);
}
libm_alias_double (__rint, rint)

29
sysdeps/aarch64/fpu/s_rintf.c
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@ -1,29 +0,0 @@
/* Copyright (C) 2011-2020 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
<https://www.gnu.org/licenses/>. */
#define NO_MATH_REDIRECT
#include <math.h>
#include <libm-alias-float.h>
float
__rintf (float x)
{
return __builtin_rintf (x);
}
libm_alias_float (__rint, rint)

29
sysdeps/aarch64/fpu/s_round.c
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@ -1,29 +0,0 @@
/* Copyright (C) 2011-2020 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
<https://www.gnu.org/licenses/>. */
#define NO_MATH_REDIRECT
#include <math.h>
#include <libm-alias-double.h>
double
__round (double x)
{
return __builtin_round (x);
}
libm_alias_double (__round, round)

29
sysdeps/aarch64/fpu/s_roundf.c
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@ -1,29 +0,0 @@
/* Copyright (C) 2011-2020 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
<https://www.gnu.org/licenses/>. */
#define NO_MATH_REDIRECT
#include <math.h>
#include <libm-alias-float.h>
float
__roundf (float x)
{
return __builtin_roundf (x);
}
libm_alias_float (__round, round)

29
sysdeps/aarch64/fpu/s_trunc.c
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@ -1,29 +0,0 @@
/* Copyright (C) 2011-2020 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
<https://www.gnu.org/licenses/>. */
#define NO_MATH_REDIRECT
#include <math.h>
#include <libm-alias-double.h>
double
__trunc (double x)
{
return __builtin_trunc (x);
}
libm_alias_double (__trunc, trunc)

29
sysdeps/aarch64/fpu/s_truncf.c
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@ -1,29 +0,0 @@
/* Copyright (C) 2011-2020 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
<https://www.gnu.org/licenses/>. */
#define NO_MATH_REDIRECT
#include <math.h>
#include <libm-alias-float.h>
float
__truncf (float x)
{
return __builtin_truncf (x);
}
libm_alias_float (__trunc, trunc)