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Re: [PATCH 19/25] sparc: refactor sparc32 fabs{f} selector to C


If no one opposes it, I will commit it shortly.  I had to adjust to use
Joseph recent changes to use libc_alias_{float,double}.

On 26/10/2017 17:06, Adhemerval Zanella wrote:
> This patch refactors the sparc32 ifunc selector to a C implementation.
> Also, the generic symbol is moved to its own implementation file
> s_fabs{f}-generic.S).
> 
> Checked on sparc64-linux-gnu and sparcv9-linux-gnu.
> 
> 	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile
> 	(libm-sysdep_routines): Add s_fabsf-generic and s_fabs-generic.
> 	* sysdeps/sparc/sparcv9/fpu/multiarch/s_fabs-generic.S: New
> 	file.
> 	* sysdeps/sparc32/sparcv9/fpu/multiarch/s_fabs.c: Likewise.
> 	* sysdeps/sparc32/sparcv9/fpu/multiarch/s_fabsf-generic.S:
> 	Likewise.
> 	* sysdeps/sparc32/sparcv9/fpu/multiarch/s_fabsf.c: Likewise.
> 	* sysdeps/sparc32/sparcv9/fpu/multiarch/s_fabs.S: Remove file.
> 	* sysdeps/sparc32/sparcv9/fpu/multiarch/s_fabsf.S: Likewise.
> 
> Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
> ---
>  ChangeLog                                          | 11 +++++++
>  .../sparc/sparc32/sparcv9/fpu/multiarch/Makefile   |  3 +-
>  .../sparc32/sparcv9/fpu/multiarch/s_fabs-generic.S |  8 +++++
>  .../sparc/sparc32/sparcv9/fpu/multiarch/s_fabs.S   | 18 -----------
>  .../sparc/sparc32/sparcv9/fpu/multiarch/s_fabs.c   | 35 ++++++++++++++++++++++
>  .../sparcv9/fpu/multiarch/s_fabsf-generic.S        |  4 +++
>  .../sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf.S  | 12 --------
>  .../sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf.c  | 29 ++++++++++++++++++
>  8 files changed, 89 insertions(+), 31 deletions(-)
>  create mode 100644 sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs-generic.S
>  delete mode 100644 sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs.S
>  create mode 100644 sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs.c
>  create mode 100644 sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf-generic.S
>  delete mode 100644 sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf.S
>  create mode 100644 sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf.c
> 
> diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile
> index b8d1126..bd8e341 100644
> --- a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile
> +++ b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile
> @@ -7,7 +7,8 @@ sysdep_calls := s_copysignf-vis3 s_copysign-vis3 s_copysignf-generic \
>  		s_copysign-generic
>  
>  sysdep_routines += $(sysdep_calls)
> -libm-sysdep_routines += s_fabs-vis3 s_fabsf-vis3 s_llrintf-vis3 s_llrint-vis3 \
> +libm-sysdep_routines += s_fabs-vis3 s_fabsf-vis3 s_fabs-generic \
> +			s_fabsf-generic s_llrintf-vis3 s_llrint-vis3 \
>  			s_rintf-vis3 s_rint-vis3 \
>  			s_fmaf-vis3 s_fma-vis3 s_fma-generic s_fmaf-generic \
>  			s_nearbyint-vis3 s_nearbyintf-vis3 \
> diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs-generic.S b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs-generic.S
> new file mode 100644
> index 0000000..ddfdf4b
> --- /dev/null
> +++ b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs-generic.S
> @@ -0,0 +1,8 @@
> +#include <math_ldbl_opt.h>
> +
> +#define __fabs __fabs_generic
> +#undef weak_alias
> +#define weak_alias(a, b)
> +#undef compat_symbol
> +#define compat_symbol(a, b, c, d)
> +#include <sysdeps/sparc/sparc32/fpu/s_fabs.S>
> diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs.S b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs.S
> deleted file mode 100644
> index 72cc08f..0000000
> --- a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs.S
> +++ /dev/null
> @@ -1,18 +0,0 @@
> -#include <sparc-ifunc.h>
> -#include <math_ldbl_opt.h>
> -
> -SPARC_ASM_VIS3_IFUNC(fabs)
> -
> -weak_alias (__fabs, fabs)
> -#if LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)
> -compat_symbol (libm, __fabs, fabsl, GLIBC_2_0);
> -#endif
> -
> -# undef weak_alias
> -# define weak_alias(a, b)
> -# undef compat_symbol
> -# define compat_symbol(a, b, c, d)
> -
> -#define __fabs __fabs_generic
> -
> -#include "../s_fabs.S"
> diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs.c b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs.c
> new file mode 100644
> index 0000000..58b0192
> --- /dev/null
> +++ b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs.c
> @@ -0,0 +1,35 @@
> +/* fabs ifunc resolver, Linux/sparc32 version.
> +   Copyright (C) 2017 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/>.  */
> +
> +#define __fabs __redirect_fabs
> +#include <math.h>
> +#undef __fabs
> +#include <math_ldbl_opt.h>
> +#include <sparc-ifunc.h>
> +
> +extern __typeof (__redirect_fabs) __fabs_vis3 attribute_hidden;
> +extern __typeof (__redirect_fabs) __fabs_generic attribute_hidden;
> +
> +sparc_libm_ifunc_redirected (__redirect_fabs, __fabs,
> +			     hwcap & HWCAP_SPARC_VIS3
> +			     ? __fabs_vis3 
> +			     : __fabs_generic);
> +weak_alias (__fabs, fabs)
> +#if LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)
> +compat_symbol (libm, __fabs, fabsl, GLIBC_2_0);
> +#endif
> diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf-generic.S b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf-generic.S
> new file mode 100644
> index 0000000..1d55c95
> --- /dev/null
> +++ b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf-generic.S
> @@ -0,0 +1,4 @@
> +#define __fabsf __fabsf_generic
> +#undef weak_alias
> +#define weak_alias(a, b)
> +#include <sysdeps/sparc/sparc32/fpu/s_fabsf.S>
> diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf.S b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf.S
> deleted file mode 100644
> index 0f2e11e..0000000
> --- a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf.S
> +++ /dev/null
> @@ -1,12 +0,0 @@
> -#include <sparc-ifunc.h>
> -
> -SPARC_ASM_VIS3_IFUNC(fabsf)
> -
> -weak_alias (__fabsf, fabsf)
> -
> -# undef weak_alias
> -# define weak_alias(a, b)
> -
> -#define __fabsf __fabsf_generic
> -
> -#include "../../../fpu/s_fabsf.S"
> diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf.c b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf.c
> new file mode 100644
> index 0000000..76711b9
> --- /dev/null
> +++ b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf.c
> @@ -0,0 +1,29 @@
> +/* fabsf ifunc resolver, Linux/sparc32 version.
> +   Copyright (C) 2017 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/>.  */
> +
> +#include <math.h>
> +#include <sparc-ifunc.h>
> +
> +extern __typeof (fabsf) __fabsf_vis3 attribute_hidden;
> +extern __typeof (fabsf) __fabsf_generic attribute_hidden;
> +
> +sparc_libm_ifunc (__fabsf,
> +		  hwcap & HWCAP_SPARC_VIS3
> +		  ? __fabsf_vis3 
> +		  : __fabsf_generic);
> +weak_alias (__fabsf, fabsf)
> 


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