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.

1 files changed, 29 insertions, 0 deletions

diff --git a/sysdeps/x86_64/fpu/multiarch/s_rint.c b/sysdeps/x86_64/fpu/multiarch/s_rint.c
new file mode 100644
index 0000000000..ad44e7cf8c
--- /dev/null
+++ b/sysdeps/x86_64/fpu/multiarch/s_rint.c
@@ -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)