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powerpc/fpu: use generic fma functions

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

This is a non functional change and powerpc 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 16:12:44 -07:00
parent c9feb1be93
commit a7a3435c9a
3 changed files with 69 additions and 54 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

69
sysdeps/powerpc/fpu/math-use-builtins.h Normal file
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@ -0,0 +1,69 @@
/* Using math gcc builtins instead of generic implementation. PowerPC version.
Copyright (C) 2019-2020 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 0
#define USE_NEARBYINTF_BUILTIN 0
#define USE_NEARBYINTL_BUILTIN 0
#define USE_NEARBYINTF128_BUILTIN 0
#define USE_RINT_BUILTIN 0
#define USE_RINTF_BUILTIN 0
#define USE_RINTL_BUILTIN 0
#define USE_RINTF128_BUILTIN 0
#define USE_FLOOR_BUILTIN 0
#define USE_FLOORF_BUILTIN 0
#define USE_FLOORL_BUILTIN 0
#define USE_FLOORF128_BUILTIN 0
#define USE_CEIL_BUILTIN 0
#define USE_CEILF_BUILTIN 0
#define USE_CEILL_BUILTIN 0
#define USE_CEILF128_BUILTIN 0
#define USE_TRUNC_BUILTIN 0
#define USE_TRUNCF_BUILTIN 0
#define USE_TRUNCL_BUILTIN 0
#define USE_TRUNCF128_BUILTIN 0
#define USE_ROUND_BUILTIN 0
#define USE_ROUNDF_BUILTIN 0
#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 0
#define USE_SQRTF_BUILTIN 0
#define USE_FMA_BUILTIN 1
#define USE_FMAF_BUILTIN 1
#endif

27
sysdeps/powerpc/fpu/s_fma.c
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@ -1,27 +0,0 @@
/* Compute x * y + z as ternary operation. PowerPC version.
Copyright (C) 2019-2020 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 <sysdep.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)

27
sysdeps/powerpc/fpu/s_fmaf.c
View File

@ -1,27 +0,0 @@
/* Compute x * y + z as ternary operation. PowerPC version.
Copyright (C) 2019-2020 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 <sysdep.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)