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x86-64: Implement libm IFUNC selectors in C 

* sysdeps/x86_64/fpu/multiarch/Makefile (libm-sysdep_routines):
	Add s_ceil-sse4_1, s_ceilf-sse4_1, s_floor-sse4_1,
	s_floorf-sse4_1, s_nearbyint-sse4_1, s_nearbyintf-sse4_1,
	s_rint-sse4_1 and s_rintf-sse4_1.
	* sysdeps/x86_64/fpu/multiarch/ifunc-sse4_1.h: New file.
	* sysdeps/x86_64/fpu/multiarch/s_ceil.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_ceilf.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_floor.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_floorf.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_nearbyint.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_nearbyintf.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_rint.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_rintf.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_ceil.S: Renamed to ...
	* sysdeps/x86_64/fpu/multiarch/s_ceil-sse4_1.S: This.  Don't
	include <machine/asm.h> nor <init-arch.h>.  Include <sysdep.h>.
	(__ceil): Removed.
	* sysdeps/x86_64/fpu/multiarch/s_ceilf.S: Renamed to ...
	* sysdeps/x86_64/fpu/multiarch/s_ceilf-sse4_1.S: This.  Don't
	include <machine/asm.h> nor <init-arch.h>.  Include <sysdep.h>.
	(__ceilf): Removed.
	* sysdeps/x86_64/fpu/multiarch/s_floor.S: Renamed to ...
	* sysdeps/x86_64/fpu/multiarch/s_floor-sse4_1.S: This.  Don't
	include <machine/asm.h> nor <init-arch.h>.  Include <sysdep.h>.
	(__floor): Removed.
	* sysdeps/x86_64/fpu/multiarch/s_floorf.S: Renamed to ...
	* sysdeps/x86_64/fpu/multiarch/s_floorf-sse4_1.S: This.  Don't
	include <machine/asm.h> nor <init-arch.h>.  Include <sysdep.h>.
	(__floorf): Removed.
	* sysdeps/x86_64/fpu/multiarch/s_nearbyint.S: Renamed to ...
	* sysdeps/x86_64/fpu/multiarch/s_nearbyint-sse4_1.S: This.  Don't
	include <machine/asm.h> nor <init-arch.h>.  Include <sysdep.h>.
	(__nearbyint): Removed.
	* sysdeps/x86_64/fpu/multiarch/s_nearbyintf.S: Renamed to ...
	* sysdeps/x86_64/fpu/multiarch/s_nearbyintf-sse4_1.S: This.  Don't
	include <machine/asm.h> nor <init-arch.h>.  Include <sysdep.h>.
	(__nearbyintf): Removed.
	* sysdeps/x86_64/fpu/multiarch/s_rint.S: Renamed to ...
	* sysdeps/x86_64/fpu/multiarch/s_rint-sse4_1.S: This.  Don't
	include <machine/asm.h> nor <init-arch.h>.  Include <sysdep.h>.
	(__rint): Removed.
	* sysdeps/x86_64/fpu/multiarch/s_rintf.S: Renamed to ...
	* sysdeps/x86_64/fpu/multiarch/s_rintf-sse4_1.S: This.  Don't
	include <machine/asm.h> nor <init-arch.h>.  Include <sysdep.h>.
	(__rintf): Removed.
This commit is contained in:
H.J. Lu 2017-08-04 13:01:59 -07:00
parent 1e8e527dd9
commit 10a87ca476
19 changed files with 335 additions and 120 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
ChangeLog
View File

@ -1,3 +1,51 @@
2017-08-04 H.J. Lu <hongjiu.lu@intel.com>
* sysdeps/x86_64/fpu/multiarch/Makefile (libm-sysdep_routines):
Add s_ceil-sse4_1, s_ceilf-sse4_1, s_floor-sse4_1,
s_floorf-sse4_1, s_nearbyint-sse4_1, s_nearbyintf-sse4_1,
s_rint-sse4_1 and s_rintf-sse4_1.
* sysdeps/x86_64/fpu/multiarch/ifunc-sse4_1.h: New file.
* sysdeps/x86_64/fpu/multiarch/s_ceil.c: Likewise.
* sysdeps/x86_64/fpu/multiarch/s_ceilf.c: Likewise.
* sysdeps/x86_64/fpu/multiarch/s_floor.c: Likewise.
* sysdeps/x86_64/fpu/multiarch/s_floorf.c: Likewise.
* sysdeps/x86_64/fpu/multiarch/s_nearbyint.c: Likewise.
* sysdeps/x86_64/fpu/multiarch/s_nearbyintf.c: Likewise.
* sysdeps/x86_64/fpu/multiarch/s_rint.c: Likewise.
* sysdeps/x86_64/fpu/multiarch/s_rintf.c: Likewise.
* sysdeps/x86_64/fpu/multiarch/s_ceil.S: Renamed to ...
* sysdeps/x86_64/fpu/multiarch/s_ceil-sse4_1.S: This. Don't
include <machine/asm.h> nor <init-arch.h>. Include <sysdep.h>.
(__ceil): Removed.
* sysdeps/x86_64/fpu/multiarch/s_ceilf.S: Renamed to ...
* sysdeps/x86_64/fpu/multiarch/s_ceilf-sse4_1.S: This. Don't
include <machine/asm.h> nor <init-arch.h>. Include <sysdep.h>.
(__ceilf): Removed.
* sysdeps/x86_64/fpu/multiarch/s_floor.S: Renamed to ...
* sysdeps/x86_64/fpu/multiarch/s_floor-sse4_1.S: This. Don't
include <machine/asm.h> nor <init-arch.h>. Include <sysdep.h>.
(__floor): Removed.
* sysdeps/x86_64/fpu/multiarch/s_floorf.S: Renamed to ...
* sysdeps/x86_64/fpu/multiarch/s_floorf-sse4_1.S: This. Don't
include <machine/asm.h> nor <init-arch.h>. Include <sysdep.h>.
(__floorf): Removed.
* sysdeps/x86_64/fpu/multiarch/s_nearbyint.S: Renamed to ...
* sysdeps/x86_64/fpu/multiarch/s_nearbyint-sse4_1.S: This. Don't
include <machine/asm.h> nor <init-arch.h>. Include <sysdep.h>.
(__nearbyint): Removed.
* sysdeps/x86_64/fpu/multiarch/s_nearbyintf.S: Renamed to ...
* sysdeps/x86_64/fpu/multiarch/s_nearbyintf-sse4_1.S: This. Don't
include <machine/asm.h> nor <init-arch.h>. Include <sysdep.h>.
(__nearbyintf): Removed.
* sysdeps/x86_64/fpu/multiarch/s_rint.S: Renamed to ...
* sysdeps/x86_64/fpu/multiarch/s_rint-sse4_1.S: This. Don't
include <machine/asm.h> nor <init-arch.h>. Include <sysdep.h>.
(__rint): Removed.
* sysdeps/x86_64/fpu/multiarch/s_rintf.S: Renamed to ...
* sysdeps/x86_64/fpu/multiarch/s_rintf-sse4_1.S: This. Don't
include <machine/asm.h> nor <init-arch.h>. Include <sysdep.h>.
(__rintf): Removed.
2017-08-04 H.J. Lu <hongjiu.lu@intel.com>
* sysdeps/i386/start.S (_start): Check Check PIC instead of

4
sysdeps/x86_64/fpu/multiarch/Makefile
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@ -2,6 +2,10 @@ ifeq ($(subdir),math)
libm-sysdep_routines += s_floor-c s_ceil-c s_floorf-c s_ceilf-c \
s_rint-c s_rintf-c s_nearbyint-c s_nearbyintf-c
libm-sysdep_routines += s_ceil-sse4_1 s_ceilf-sse4_1 s_floor-sse4_1 \
s_floorf-sse4_1 s_nearbyint-sse4_1 \
s_nearbyintf-sse4_1 s_rint-sse4_1 s_rintf-sse4_1
libm-sysdep_routines += e_exp-fma4 e_log-fma4 e_pow-fma4 s_atan-fma4 \
e_asin-fma4 e_atan2-fma4 s_sin-fma4 s_tan-fma4 \
mplog-fma4 mpa-fma4 slowexp-fma4 slowpow-fma4 \

33
sysdeps/x86_64/fpu/multiarch/ifunc-sse4_1.h Normal file
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@ -0,0 +1,33 @@
/* Common definition for ifunc selections optimized with SSE4.1.
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 <init-arch.h>
extern __typeof (REDIRECT_NAME) OPTIMIZE (c) attribute_hidden;
extern __typeof (REDIRECT_NAME) OPTIMIZE (sse41) attribute_hidden;
static inline void *
IFUNC_SELECTOR (void)
{
const struct cpu_features* cpu_features = __get_cpu_features ();
if (CPU_FEATURES_CPU_P (cpu_features, SSE4_1))
return OPTIMIZE (sse41);
return OPTIMIZE (c);
}

17
sysdeps/x86_64/fpu/multiarch/s_ceil.S → sysdeps/x86_64/fpu/multiarch/s_ceil-sse4_1.S
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@ -16,22 +16,9 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <machine/asm.h>
#include <init-arch.h>
ENTRY(__ceil)
.type __ceil, @gnu_indirect_function
LOAD_RTLD_GLOBAL_RO_RDX
leaq __ceil_sse41(%rip), %rax
HAS_CPU_FEATURE (SSE4_1)
jnz 2f
leaq __ceil_c(%rip), %rax
2: ret
END(__ceil)
weak_alias (__ceil, ceil)
#include <sysdep.h>
.section .text.sse4.1,"ax",@progbits
ENTRY(__ceil_sse41)
roundsd $10, %xmm0, %xmm0
ret

29
sysdeps/x86_64/fpu/multiarch/s_ceil.c Normal file
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@ -0,0 +1,29 @@
/* Multiple versions of __ceil.
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 ceil __redirect_ceil
#define __ceil __redirect___ceil
#include <math.h>
#undef ceil
#undef __ceil
#define SYMBOL_NAME ceil
#include "ifunc-sse4_1.h"
libc_ifunc_redirected (__redirect_ceil, __ceil, IFUNC_SELECTOR ());
weak_alias (__ceil, ceil)

17
sysdeps/x86_64/fpu/multiarch/s_ceilf.S → sysdeps/x86_64/fpu/multiarch/s_ceilf-sse4_1.S
View File

@ -16,22 +16,9 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <machine/asm.h>
#include <init-arch.h>
ENTRY(__ceilf)
.type __ceilf, @gnu_indirect_function
LOAD_RTLD_GLOBAL_RO_RDX
leaq __ceilf_sse41(%rip), %rax
HAS_CPU_FEATURE (SSE4_1)
jnz 2f
leaq __ceilf_c(%rip), %rax
2: ret
END(__ceilf)
weak_alias (__ceilf, ceilf)
#include <sysdep.h>
.section .text.sse4.1,"ax",@progbits
ENTRY(__ceilf_sse41)
roundss $10, %xmm0, %xmm0
ret

29
sysdeps/x86_64/fpu/multiarch/s_ceilf.c Normal file
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@ -0,0 +1,29 @@
/* Multiple versions of __ceilf.
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 ceilf __redirect_ceilf
#define __ceilf __redirect___ceilf
#include <math.h>
#undef ceilf
#undef __ceilf
#define SYMBOL_NAME ceilf
#include "ifunc-sse4_1.h"
libc_ifunc_redirected (__redirect_ceilf, __ceilf, IFUNC_SELECTOR ());
weak_alias (__ceilf, ceilf)

17
sysdeps/x86_64/fpu/multiarch/s_floor.S → sysdeps/x86_64/fpu/multiarch/s_floor-sse4_1.S
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@ -16,22 +16,9 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <machine/asm.h>
#include <init-arch.h>
ENTRY(__floor)
.type __floor, @gnu_indirect_function
LOAD_RTLD_GLOBAL_RO_RDX
leaq __floor_sse41(%rip), %rax
HAS_CPU_FEATURE (SSE4_1)
jnz 2f
leaq __floor_c(%rip), %rax
2: ret
END(__floor)
weak_alias (__floor, floor)
#include <sysdep.h>
.section .text.sse4.1,"ax",@progbits
ENTRY(__floor_sse41)
roundsd $9, %xmm0, %xmm0
ret

29
sysdeps/x86_64/fpu/multiarch/s_floor.c Normal file
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@ -0,0 +1,29 @@
/* Multiple versions of __floor.
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 floor __redirect_floor
#define __floor __redirect___floor
#include <math.h>
#undef floor
#undef __floor
#define SYMBOL_NAME floor
#include "ifunc-sse4_1.h"
libc_ifunc_redirected (__redirect_floor, __floor, IFUNC_SELECTOR ());
weak_alias (__floor, floor)

17
sysdeps/x86_64/fpu/multiarch/s_floorf.S → sysdeps/x86_64/fpu/multiarch/s_floorf-sse4_1.S
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@ -16,22 +16,9 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <machine/asm.h>
#include <init-arch.h>
ENTRY(__floorf)
.type __floorf, @gnu_indirect_function
LOAD_RTLD_GLOBAL_RO_RDX
leaq __floorf_sse41(%rip), %rax
HAS_CPU_FEATURE (SSE4_1)
jnz 2f
leaq __floorf_c(%rip), %rax
2: ret
END(__floorf)
weak_alias (__floorf, floorf)
#include <sysdep.h>
.section .text.sse4.1,"ax",@progbits
ENTRY(__floorf_sse41)
roundss $9, %xmm0, %xmm0
ret

29
sysdeps/x86_64/fpu/multiarch/s_floorf.c Normal file
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@ -0,0 +1,29 @@
/* Multiple versions of __floorf.
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 floorf __redirect_floorf
#define __floorf __redirect___floorf
#include <math.h>
#undef floorf
#undef __floorf
#define SYMBOL_NAME floorf
#include "ifunc-sse4_1.h"
libc_ifunc_redirected (__redirect_floorf, __floorf, IFUNC_SELECTOR ());
weak_alias (__floorf, floorf)

17
sysdeps/x86_64/fpu/multiarch/s_nearbyint.S → sysdeps/x86_64/fpu/multiarch/s_nearbyint-sse4_1.S
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@ -16,22 +16,9 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <machine/asm.h>
#include <init-arch.h>
ENTRY(__nearbyint)
.type __nearbyint, @gnu_indirect_function
LOAD_RTLD_GLOBAL_RO_RDX
leaq __nearbyint_sse41(%rip), %rax
HAS_CPU_FEATURE (SSE4_1)
jnz 2f
leaq __nearbyint_c(%rip), %rax
2: ret
END(__nearbyint)
weak_alias (__nearbyint, nearbyint)
#include <sysdep.h>
.section .text.sse4.1,"ax",@progbits
ENTRY(__nearbyint_sse41)
roundsd $0xc, %xmm0, %xmm0
ret

30
sysdeps/x86_64/fpu/multiarch/s_nearbyint.c Normal file
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@ -0,0 +1,30 @@
/* Multiple versions of __nearbyint.
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 nearbyint __redirect_nearbyint
#define __nearbyint __redirect___nearbyint
#include <math.h>
#undef nearbyint
#undef __nearbyint
#define SYMBOL_NAME nearbyint
#include "ifunc-sse4_1.h"
libc_ifunc_redirected (__redirect_nearbyint, __nearbyint,
IFUNC_SELECTOR ());
weak_alias (__nearbyint, nearbyint)

17
sysdeps/x86_64/fpu/multiarch/s_nearbyintf.S → sysdeps/x86_64/fpu/multiarch/s_nearbyintf-sse4_1.S
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@ -16,22 +16,9 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <machine/asm.h>
#include <init-arch.h>
ENTRY(__nearbyintf)
.type __nearbyintf, @gnu_indirect_function
LOAD_RTLD_GLOBAL_RO_RDX
leaq __nearbyintf_sse41(%rip), %rax
HAS_CPU_FEATURE (SSE4_1)
jnz 2f
leaq __nearbyintf_c(%rip), %rax
2: ret
END(__nearbyintf)
weak_alias (__nearbyintf, nearbyintf)
#include <sysdep.h>
.section .text.sse4.1,"ax",@progbits
ENTRY(__nearbyintf_sse41)
roundss $0xc, %xmm0, %xmm0
ret

30
sysdeps/x86_64/fpu/multiarch/s_nearbyintf.c Normal file
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@ -0,0 +1,30 @@
/* Multiple versions of __nearbyintf.
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 nearbyintf __redirect_nearbyintf
#define __nearbyintf __redirect___nearbyintf
#include <math.h>
#undef nearbyintf
#undef __nearbyintf
#define SYMBOL_NAME nearbyintf
#include "ifunc-sse4_1.h"
libc_ifunc_redirected (__redirect_nearbyintf, __nearbyintf,
IFUNC_SELECTOR ());
weak_alias (__nearbyintf, nearbyintf)

17
sysdeps/x86_64/fpu/multiarch/s_rint.S → sysdeps/x86_64/fpu/multiarch/s_rint-sse4_1.S
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@ -16,22 +16,9 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <machine/asm.h>
#include <init-arch.h>
ENTRY(__rint)
.type __rint, @gnu_indirect_function
LOAD_RTLD_GLOBAL_RO_RDX
leaq __rint_sse41(%rip), %rax
HAS_CPU_FEATURE (SSE4_1)
jnz 2f
leaq __rint_c(%rip), %rax
2: ret
END(__rint)
weak_alias (__rint, rint)
#include <sysdep.h>
.section .text.sse4.1,"ax",@progbits
ENTRY(__rint_sse41)
roundsd $4, %xmm0, %xmm0
ret

29
sysdeps/x86_64/fpu/multiarch/s_rint.c Normal file
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@ -0,0 +1,29 @@
/* Multiple versions of __rint.
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 rint __redirect_rint
#define __rint __redirect___rint
#include <math.h>
#undef rint
#undef __rint
#define SYMBOL_NAME rint
#include "ifunc-sse4_1.h"
libc_ifunc_redirected (__redirect_rint, __rint, IFUNC_SELECTOR ());
weak_alias (__rint, rint)

17
sysdeps/x86_64/fpu/multiarch/s_rintf.S → sysdeps/x86_64/fpu/multiarch/s_rintf-sse4_1.S
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@ -16,22 +16,9 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <machine/asm.h>
#include <init-arch.h>
ENTRY(__rintf)
.type __rintf, @gnu_indirect_function
LOAD_RTLD_GLOBAL_RO_RDX
leaq __rintf_sse41(%rip), %rax
HAS_CPU_FEATURE (SSE4_1)
jnz 2f
leaq __rintf_c(%rip), %rax
2: ret
END(__rintf)
weak_alias (__rintf, rintf)
#include <sysdep.h>
.section .text.sse4.1,"ax",@progbits
ENTRY(__rintf_sse41)
roundss $4, %xmm0, %xmm0
ret

29
sysdeps/x86_64/fpu/multiarch/s_rintf.c Normal file
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@ -0,0 +1,29 @@
/* Multiple versions of __rintf.
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 rintf __redirect_rintf
#define __rintf __redirect___rintf
#include <math.h>
#undef rintf
#undef __rintf
#define SYMBOL_NAME rintf
#include "ifunc-sse4_1.h"
libc_ifunc_redirected (__redirect_rintf, __rintf, IFUNC_SELECTOR ());
weak_alias (__rintf, rintf)