[PATCH] x86_64: Add asinh with FMA

[Sunil K Pandey]

FMA and non-FMA performance are similar on SPR.

			Before          After           Improvement
reciprocal-throughput	12.226		12.4064		-1%
latency			49.4701		48.4424		2%
---
 benchtests/asinh-inputs                    |  1 +
 sysdeps/ieee754/dbl-64/s_asinh.c           |  5 ++++
 sysdeps/x86_64/fpu/multiarch/Makefile      |  2 ++
 sysdeps/x86_64/fpu/multiarch/s_asinh-fma.c |  7 +++++
 sysdeps/x86_64/fpu/multiarch/s_asinh.c     | 31 ++++++++++++++++++++++
 5 files changed, 46 insertions(+)
 create mode 100644 sysdeps/x86_64/fpu/multiarch/s_asinh-fma.c
 create mode 100644 sysdeps/x86_64/fpu/multiarch/s_asinh.c

diff --git a/benchtests/asinh-inputs b/benchtests/asinh-inputs
index 8dfa37c49f..946e7b4d22 100644
--- a/benchtests/asinh-inputs
+++ b/benchtests/asinh-inputs
@@ -1,6 +1,7 @@
 ## args: double
 ## ret: double
 ## includes: math.h
+## name: workload-random
 0x1.408fb643484cep-11
 0x1.f0763423f1d52p-23
 -0x1.681573418e494p4
diff --git a/sysdeps/ieee754/dbl-64/s_asinh.c b/sysdeps/ieee754/dbl-64/s_asinh.c
index 7fd281d791..04b686a28e 100644
--- a/sysdeps/ieee754/dbl-64/s_asinh.c
+++ b/sysdeps/ieee754/dbl-64/s_asinh.c
@@ -32,6 +32,11 @@ static const double
   ln2 = 6.93147180559945286227e-01, /* 0x3FE62E42, 0xFEFA39EF */
   huge = 1.00000000000000000000e+300;
 
+#ifndef SECTION
+# define SECTION
+#endif
+
+SECTION
 double
 __asinh (double x)
 {
diff --git a/sysdeps/x86_64/fpu/multiarch/Makefile b/sysdeps/x86_64/fpu/multiarch/Makefile
index 3403422443..1ab46bb446 100644
--- a/sysdeps/x86_64/fpu/multiarch/Makefile
+++ b/sysdeps/x86_64/fpu/multiarch/Makefile
@@ -7,6 +7,7 @@ CFLAGS-e_log-fma.c = -mfma -mavx2
 CFLAGS-e_log2-fma.c = -mfma -mavx2
 CFLAGS-e_pow-fma.c = -mfma -mavx2
 CFLAGS-e_sinh-fma.c = -mfma -mavx2
+CFLAGS-s_asinh-fma.c = -mfma -mavx2
 CFLAGS-s_atan-fma.c = -mfma -mavx2
 CFLAGS-s_expm1-fma.c = -mfma -mavx2
 CFLAGS-s_log1p-fma.c = -mfma -mavx2
@@ -73,6 +74,7 @@ libm-sysdep_routines += \
   e_pow-fma \
   e_powf-fma \
   e_sinh-fma \
+  s_asinh-fma \
   s_atan-avx \
   s_atan-fma \
   s_ceil-sse4_1 \
diff --git a/sysdeps/x86_64/fpu/multiarch/s_asinh-fma.c b/sysdeps/x86_64/fpu/multiarch/s_asinh-fma.c
new file mode 100644
index 0000000000..293a255005
--- /dev/null
+++ b/sysdeps/x86_64/fpu/multiarch/s_asinh-fma.c
@@ -0,0 +1,7 @@
+#define __asinh __asinh_fma
+#define __ieee754_log __ieee754_log_fma
+#define __log1p __log1p_fma
+
+#define SECTION __attribute__ ((section (".text.fma")))
+
+#include <sysdeps/ieee754/dbl-64/s_asinh.c>
diff --git a/sysdeps/x86_64/fpu/multiarch/s_asinh.c b/sysdeps/x86_64/fpu/multiarch/s_asinh.c
new file mode 100644
index 0000000000..509d74c96b
--- /dev/null
+++ b/sysdeps/x86_64/fpu/multiarch/s_asinh.c
@@ -0,0 +1,31 @@
+/* Multiple versions of asinh.
+   Copyright (C) 2025 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 <sysdeps/x86/isa-level.h>
+#if MINIMUM_X86_ISA_LEVEL < AVX2_X86_ISA_LEVEL
+
+extern double __redirect_asinh (double);
+
+# define SYMBOL_NAME asinh
+# include "ifunc-fma.h"
+
+libc_ifunc_redirected (__redirect_asinh, __asinh, IFUNC_SELECTOR ());
+
+# define __asinh __asinh_sse2
+#endif
+#include <sysdeps/ieee754/dbl-64/s_asinh.c>
-- 
2.48.1