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powerpc: copysign cleanup

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GCC always expand copysign{f} for all possible cpus, so calling the libm
is only done if user explicitly states to disable the builtin (which is
done usually not for performance reason).  So to provide ifunc variant
for copysign is just unrequired complexity, since libm will be called
on non-performance critical code.

This patch removes both powerpc32 and powerpc64 ifunc variants and
consolidates the powerpc implementation on
sysdeps/powerpc/fpu/s_copysign{f}.c using compiler builtins.

Checked on powerpc-linux-gnu (built without --with-cpu, with
--with-cpu=power4 and with --with-cpu=power5+ and --disable-multi-arch),
powerpc64-linux-gnu (built without --with-cp and with --with-cpu=power5+
and --disable-multi-arch).

	* sysdeps/powerpc/fpu/s_copysign.c: New file.
	* sysdeps/powerpc/fpu/s_copysignf.c: Likewise.
	* sysdeps/powerpc/powerpc32/fpu/s_copysign.S: Remove file.
	* sysdeps/powerpc/powerpc32/fpu/s_copysignf.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/Makefile
	(sysdep_routines, libm-sysdep_routines): Remove s_copysign-power6 and
	s_copysign-ppc32.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_copysign-power6.S:
	Remove file.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_copysign-ppc32.S:
	Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_copysign.c:
	Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_copysignf.c:
	Likewise.
	* sysdeps/powerpc/powerpc32/power6/fpu/s_copysign.S: Likewise.
	* sysdeps/powerpc/powerpc32/power6/fpu/s_copysignf.S: Likewise.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile (sysdeps_calls):
	Remove s_copysign-power6 s_copysign-ppc64.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign-power6.S:
	Remove file.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign-ppc64.S:
	Likewise.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign.c: Likewise.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysignf.c: Likewise.
	* sysdeps/powerpc/powerpc64/fpu/s_copysign.S: Likewise.
	* sysdeps/powerpc/powerpc64/fpu/s_copysignf.S: Likewise.
	* sysdeps/powerpc/powerpc64/power6/fpu/s_copysign.S: Likewise.
	* sysdeps/powerpc/powerpc64/power6/fpu/s_copysignf.S: Likewise.

Reviewed-by: Gabriel F. T. Gomes <gabrielftg@linux.ibm.com>
This commit is contained in:
Adhemerval Zanella 2019-03-08 16:55:52 +00:00
parent 21bd039bb4
commit e41d66e41a
21 changed files with 94 additions and 504 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
ChangeLog
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@ -1,5 +1,35 @@
2019-06-12 Adhemerval Zanella <adhemerval.zanella@linaro.org>
* sysdeps/powerpc/fpu/s_copysign.c: New file.
* sysdeps/powerpc/fpu/s_copysignf.c: Likewise.
* sysdeps/powerpc/powerpc32/fpu/s_copysign.S: Remove file.
* sysdeps/powerpc/powerpc32/fpu/s_copysignf.S: Likewise.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/Makefile
(sysdep_routines, libm-sysdep_routines): Remove s_copysign-power6 and
s_copysign-ppc32.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_copysign-power6.S:
Remove file.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_copysign-ppc32.S:
Likewise.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_copysign.c:
Likewise.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_copysignf.c:
Likewise.
* sysdeps/powerpc/powerpc32/power6/fpu/s_copysign.S: Likewise.
* sysdeps/powerpc/powerpc32/power6/fpu/s_copysignf.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile (sysdeps_calls):
Remove s_copysign-power6 s_copysign-ppc64.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign-power6.S:
Remove file.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign-ppc64.S:
Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign.c: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysignf.c: Likewise.
* sysdeps/powerpc/powerpc64/fpu/s_copysign.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/s_copysignf.S: Likewise.
* sysdeps/powerpc/powerpc64/power6/fpu/s_copysign.S: Likewise.
* sysdeps/powerpc/powerpc64/power6/fpu/s_copysignf.S: Likewise.
* sysdeps/powerpc/fpu/round_to_integer.h (set_fenv_mode,
round_to_integer_float, round_mode): Add RINT handling.
(reset_fenv_mode): New symbol.

32
sysdeps/powerpc/fpu/s_copysign.c Normal file
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@ -0,0 +1,32 @@
/* Copy sign of a number. PowerPC version.
Copyright (C) 2019 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, see <http://www.gnu.org/licenses/>. */
#define NO_MATH_REDIRECT
#include <math.h>
#include <math_ldbl_opt.h>
#include <libm-alias-double.h>
double
__copysign (double x, double y)
{
return __builtin_copysign (x, y);
}
libm_alias_double (__copysign, copysign)
#if LONG_DOUBLE_COMPAT (libc, GLIBC_2_0)
compat_symbol (libc, __copysign, copysignl, GLIBC_2_0);
#endif

28
sysdeps/powerpc/fpu/s_copysignf.c Normal file
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@ -0,0 +1,28 @@
/* Copy sign of a number. PowerPC version.
Copyright (C) 2019 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, see <http://www.gnu.org/licenses/>. */
#define NO_MATH_REDIRECT
#include <math.h>
#include <libm-alias-float.h>
float
__copysignf (float x, float y)
{
return __builtin_copysignf (x, y);
}
libm_alias_float (__copysign, copysign)

53
sysdeps/powerpc/powerpc32/fpu/s_copysign.S
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@ -1,53 +0,0 @@
/* Copy a sign bit between floating-point values.
Copyright (C) 1997-2019 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/>. */
/* This has been coded in assembler because GCC makes such a mess of it
when it's coded in C. */
#include <sysdep.h>
#include <math_ldbl_opt.h>
#include <libm-alias-float.h>
#include <libm-alias-double.h>
ENTRY(__copysign)
/* double [f1] copysign (double [f1] x, double [f2] y);
copysign(x,y) returns a value with the magnitude of x and
with the sign bit of y. */
stwu r1,-16(r1)
cfi_adjust_cfa_offset (16)
stfd fp2,8(r1)
lwz r3,8+HIWORD(r1)
cmpwi r3,0
addi r1,r1,16
cfi_adjust_cfa_offset (-16)
blt L(0)
fabs fp1,fp1
blr
L(0): fnabs fp1,fp1
blr
END (__copysign)
libm_alias_double (__copysign, copysign)
/* It turns out that it's safe to use this code even for single-precision. */
strong_alias(__copysign,__copysignf)
libm_alias_float (__copysign, copysign)
#if LONG_DOUBLE_COMPAT (libc, GLIBC_2_0)
compat_symbol (libc, __copysign, copysignl, GLIBC_2_0)
#endif

1
sysdeps/powerpc/powerpc32/fpu/s_copysignf.S
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@ -1 +0,0 @@
/* __copysignf is in s_copysign.S */

6
sysdeps/powerpc/powerpc32/power4/fpu/multiarch/Makefile
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@ -2,8 +2,8 @@ ifeq ($(subdir),math)
sysdep_routines += s_isnan-power7 s_isnan-power6 s_isnan-power5 s_isnan-ppc32 \
s_isnanf-power6 s_isnanf-power5 s_isinf-power7 \
s_isinf-ppc32 s_isinff-ppc32 s_finite-power7 \
s_finite-ppc32 s_finitef-ppc32 s_copysign-power6 \
s_copysign-ppc32 s_modf-power5+ s_modf-ppc32 \
s_finite-ppc32 s_finitef-ppc32 \
s_modf-power5+ s_modf-ppc32 \
s_modff-power5+ s_modff-ppc32
libm-sysdep_routines += s_llrintf-power6 s_llrintf-ppc32 s_llrint-power6 \
@ -18,7 +18,7 @@ libm-sysdep_routines += s_llrintf-power6 s_llrintf-ppc32 s_llrint-power6 \
s_floorf-ppc32 s_round-power5+ s_round-ppc32 \
s_roundf-power5+ s_roundf-ppc32 s_trunc-power5+ \
s_trunc-ppc32 s_truncf-power5+ s_truncf-ppc32 \
s_copysign-power6 s_copysign-ppc32 s_lround-power6x \
s_lround-power6x \
s_lround-power5+ s_lround-ppc32 s_lrint-power6x \
s_lrint-ppc32 s_modf-power5+ s_modf-ppc32 \
s_modff-power5+ s_modff-ppc32 s_logbl-power7 \

33
sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_copysign-power6.S
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@ -1,33 +0,0 @@
/* copysign(). PowerPC32/POWER6 version.
Copyright (C) 2013-2019 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 <sysdep.h>
#include <math_ldbl_opt.h>
#undef hidden_def
#define hidden_def(name)
#undef weak_alias
#define weak_alias(name, alias)
#undef strong_alias
#define strong_alias(name, alias)
#undef compat_symbol
#define compat_symbol(lib, name, alias, ver)
#define __copysign __copysign_power6
#include <sysdeps/powerpc/powerpc32/power6/fpu/s_copysign.S>

34
sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_copysign-ppc32.S
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@ -1,34 +0,0 @@
/* copysign(). PowerPC32 default version.
Copyright (C) 2013-2019 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 <sysdep.h>
#include <math_ldbl_opt.h>
#undef weak_alias
#define weak_alias(a,b)
#undef strong_alias
#define strong_alias(a,b)
#undef compat_symbol
#define compat_symbol(a, b, c, d)
#define __copysign __copysign_ppc32
#undef hidden_def
#define hidden_def(name)
strong_alias (__copysign_ppc32, __GI___copysign)
#include <sysdeps/powerpc/powerpc32/fpu/s_copysign.S>

45
sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_copysign.c
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@ -1,45 +0,0 @@
/* Multiple versions of copysign.
Copyright (C) 2013-2019 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 NO_MATH_REDIRECT
/* Redefine copysign so that the compiler won't complain about the type
mismatch with the IFUNC selector in strong_alias below. */
#undef __copysign
#define __copysign __redirect_copysign
#include <math.h>
#include <math_ldbl_opt.h>
#undef __copysign
#include <shlib-compat.h>
#include "init-arch.h"
#include <libm-alias-double.h>
extern __typeof (__redirect_copysign) __copysign_ppc32 attribute_hidden;
extern __typeof (__redirect_copysign) __copysign_power6 attribute_hidden;
extern __typeof (__redirect_copysign) __libm_copysign;
libc_ifunc (__libm_copysign,
(hwcap & PPC_FEATURE_ARCH_2_05)
? __copysign_power6
: __copysign_ppc32);
strong_alias (__libm_copysign, __copysign)
libm_alias_double (__copysign, copysign)
#if LONG_DOUBLE_COMPAT (libc, GLIBC_2_0)
compat_symbol (libc, __copysign, copysignl, GLIBC_2_0);
#endif

34
sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_copysignf.c
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@ -1,34 +0,0 @@
/* Multiple versions of copysignf.
Copyright (C) 2013-2019 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 NO_MATH_REDIRECT
#include <math.h>
#include <shlib-compat.h>
#include "init-arch.h"
#include <libm-alias-float.h>
/* It's safe to use double-precision implementation for single-precision. */
extern __typeof (__copysignf) __copysign_ppc32 attribute_hidden;
extern __typeof (__copysignf) __copysign_power6 attribute_hidden;
libc_ifunc (__copysignf,
(hwcap & PPC_FEATURE_ARCH_2_05)
? __copysign_power6
: __copysign_ppc32);
libm_alias_float (__copysign, copysign)

49
sysdeps/powerpc/powerpc32/power6/fpu/s_copysign.S
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@ -1,49 +0,0 @@
/* copysign(). PowerPC32/POWER6 version.
Copyright (C) 2010-2019 Free Software Foundation, Inc.
Contributed by Luis Machado <luisgpm@br.ibm.com>.
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 <sysdep.h>
#include <math_ldbl_opt.h>
#include <libm-alias-float.h>
#include <libm-alias-double.h>
/* double [f1] copysign (double [f1] x, double [f2] y);
copysign(x,y) returns a value with the magnitude of x and
with the sign bit of y. */
.section ".text"
.type __copysign, @function
.machine power6
EALIGN (__copysign, 4, 0)
CALL_MCOUNT
fcpsgn fp1,fp2,fp1
blr
END (__copysign)
hidden_def (__copysign)
libm_alias_double (__copysign, copysign)
/* It turns out that the 'double' version will also always work for
single-precision. */
strong_alias (__copysign, __copysignf)
hidden_def (__copysignf)
libm_alias_float (__copysign, copysign)
#if LONG_DOUBLE_COMPAT (libc, GLIBC_2_0)
compat_symbol (libc, copysign, copysignl, GLIBC_2_0);
#endif

1
sysdeps/powerpc/powerpc32/power6/fpu/s_copysignf.S
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@ -1 +0,0 @@
/* This function uses the same code as s_copysign.S. */

3
sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile
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@ -2,8 +2,7 @@ ifeq ($(subdir),math)
# These functions are built both for libc and libm because they're required
# by printf. While the libc objects have the prefix s_, the libm ones are
# prefixed with m_.
sysdep_calls := s_copysign-power6 s_copysign-ppc64 \
s_finite-power8 s_finite-power7 s_finite-ppc64 \
sysdep_calls := s_finite-power8 s_finite-power7 s_finite-ppc64 \
s_finitef-ppc64 \
s_isinf-power8 s_isinf-ppc64 \
s_isinff-ppc64 s_isinf-power7 \

32
sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign-power6.S
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@ -1,32 +0,0 @@
/* copysign(). PowerPC64 default version.
Copyright (C) 2013-2019 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 <shlib-compat.h>
#undef weak_alias
#define weak_alias(a,b)
#undef strong_alias
#define strong_alias(a,b)
#undef compat_symbol
#define compat_symbol(a, b, c, d)
#undef hidden_def
#define hidden_def(name)
#define __copysign __copysign_power6
#include <sysdeps/powerpc/powerpc64/fpu/s_copysign.S>

34
sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign-ppc64.S
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@ -1,34 +0,0 @@
/* copysign(). PowerPC64 default version.
Copyright (C) 2010-2019 Free Software Foundation, Inc.
Contributed by Luis Machado <luisgpm@br.ibm.com>.
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 <shlib-compat.h>
#undef weak_alias
#define weak_alias(a,b)
#undef strong_alias
#define strong_alias(a,b)
#undef compat_symbol
#define compat_symbol(a, b, c, d)
#define __copysign __copysign_ppc64
#undef hidden_def
#define hidden_def(name) \
strong_alias (__copysign_ppc64, __GI___copysign)
#include <sysdeps/powerpc/powerpc64/fpu/s_copysign.S>

45
sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign.c
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@ -1,45 +0,0 @@
/* Multiple versions of copysign.
Copyright (C) 2013-2019 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 NO_MATH_REDIRECT
/* Redefine copysign so that the compiler won't complain about the type
mismatch with the IFUNC selector in strong_alias below. */
#undef __copysign
#define __copysign __redirect_copysign
#include <math.h>
#include <math_ldbl_opt.h>
#undef __copysign
#include <shlib-compat.h>
#include "init-arch.h"
#include <libm-alias-double.h>
extern __typeof (__redirect_copysign) __copysign_ppc64 attribute_hidden;
extern __typeof (__redirect_copysign) __copysign_power6 attribute_hidden;
extern __typeof (__redirect_copysign) __libm_copysign;
libc_ifunc (__libm_copysign,
(hwcap & PPC_FEATURE_ARCH_2_05)
? __copysign_power6
: __copysign_ppc64);
strong_alias (__libm_copysign, __copysign)
libm_alias_double (__copysign, copysign)
#if LONG_DOUBLE_COMPAT (libc, GLIBC_2_0)
compat_symbol (libc, __copysign, copysignl, GLIBC_2_0);
#endif

34
sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysignf.c
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@ -1,34 +0,0 @@
/* Multiple versions of copysignf.
Copyright (C) 2013-2019 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 NO_MATH_REDIRECT
#include <math.h>
#include <shlib-compat.h>
#include "init-arch.h"
#include <libm-alias-float.h>
/* It's safe to use double-precision implementation for single-precision. */
extern __typeof (__copysignf) __copysign_ppc64 attribute_hidden;
extern __typeof (__copysignf) __copysign_power6 attribute_hidden;
libc_ifunc (__copysignf,
(hwcap & PPC_FEATURE_ARCH_2_05)
? __copysign_power6
: __copysign_ppc64);
libm_alias_float (__copysign, copysign)

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sysdeps/powerpc/powerpc64/fpu/s_copysign.S
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@ -1,53 +0,0 @@
/* Copy a sign bit between floating-point values. PowerPC64 version.
Copyright (C) 1997-2019 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/>. */
/* This has been coded in assembler because GCC makes such a mess of it
when it's coded in C. */
#include <sysdep.h>
#include <math_ldbl_opt.h>
#include <libm-alias-float.h>
#include <libm-alias-double.h>
ENTRY_TOCLESS (__copysign)
CALL_MCOUNT 0
/* double [f1] copysign (double [f1] x, double [f2] y);
copysign(x,y) returns a value with the magnitude of x and
with the sign bit of y. */
stfd fp2,-8(r1)
nop
nop
nop
ld r3,-8(r1)
cmpdi r3,0
blt L(0)
fabs fp1,fp1
blr
L(0): fnabs fp1,fp1
blr
END (__copysign)
libm_alias_double (__copysign, copysign)
/* It turns out that it's safe to use this code even for single-precision. */
strong_alias(__copysign,__copysignf)
libm_alias_float (__copysign, copysign)
#if LONG_DOUBLE_COMPAT (libc, GLIBC_2_0)
compat_symbol (libc, __copysign, copysignl, GLIBC_2_0)
#endif

1
sysdeps/powerpc/powerpc64/fpu/s_copysignf.S
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@ -1 +0,0 @@
/* __copysignf is in s_copysign.S */

49
sysdeps/powerpc/powerpc64/power6/fpu/s_copysign.S
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@ -1,49 +0,0 @@
/* copysign(). PowerPC64/POWER6 version.
Copyright (C) 2010-2019 Free Software Foundation, Inc.
Contributed by Luis Machado <luisgpm@br.ibm.com>.
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 <sysdep.h>
#include <math_ldbl_opt.h>
#include <libm-alias-float.h>
#include <libm-alias-double.h>
/* double [f1] copysign (double [f1] x, double [f2] y);
copysign(x,y) returns a value with the magnitude of x and
with the sign bit of y. */
.section ".text"
.type __copysign, @function
.machine power6
ENTRY_TOCLESS (__copysign, 4)
CALL_MCOUNT 0
fcpsgn fp1,fp2,fp1
blr
END (__copysign)
hidden_def (__copysign)
libm_alias_double (__copysign, copysign)
/* It turns out that the 'double' version will also always work for
single-precision. */
strong_alias (__copysign, __copysignf)
hidden_def (__copysignf)
libm_alias_float (__copysign, copysign)
#if LONG_DOUBLE_COMPAT (libc, GLIBC_2_0)
compat_symbol (libc, copysign, copysignl, GLIBC_2_0);
#endif

1
sysdeps/powerpc/powerpc64/power6/fpu/s_copysignf.S
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@ -1 +0,0 @@
/* This function uses the same code as s_copysign.S. */