[PATCH v2 04/10] i386: Use generic fmodf
Adhemerval Zanella
adhemerval.zanella@linaro.org
Wed Mar 27 19:40:18 GMT 2024
The resulting performance is similiar (Ryzen 5900, gcc 13.2.1):
* sysdeps/i386/fpu/e_fmodf.S
"fmodf": {
"subnormals": {
"duration": 3.68732e+09,
"iterations": 2.2912e+08,
"max": 71.447,
"min": 15.836,
"mean": 16.0934
},
"normal": {
"duration": 3.75848e+09,
"iterations": 5.5296e+07,
"max": 273.208,
"min": 15.725,
"mean": 67.9702
},
"close-exponents": {
"duration": 3.69035e+09,
"iterations": 2.07872e+08,
"max": 64.454,
"min": 15.762,
"mean": 17.753
}
}
* master
"fmodf": {
"subnormals": {
"duration": 3.6863e+09,
"iterations": 2.23616e+08,
"max": 65.453,
"min": 16.243,
"mean": 16.485
},
"normal": {
"duration": 3.71129e+09,
"iterations": 5.3248e+07,
"max": 281.57,
"min": 16.169,
"mean": 69.6983
},
"close-exponents": {
"duration": 3.70274e+09,
"iterations": 2.03776e+08,
"max": 81.474,
"min": 16.206,
"mean": 18.1706
}
}
---
sysdeps/i386/fpu/Versions | 2 +-
sysdeps/i386/fpu/e_fmodf.S | 18 ------------------
sysdeps/i386/fpu/e_fmodf.c | 2 ++
sysdeps/i386/fpu/w_fmodf_compat.c | 15 ---------------
sysdeps/ieee754/flt-32/e_fmodf.c | 5 ++++-
sysdeps/mach/hurd/i386/libm.abilist | 1 +
sysdeps/unix/sysv/linux/i386/libm.abilist | 1 +
7 files changed, 9 insertions(+), 35 deletions(-)
delete mode 100644 sysdeps/i386/fpu/e_fmodf.S
create mode 100644 sysdeps/i386/fpu/e_fmodf.c
delete mode 100644 sysdeps/i386/fpu/w_fmodf_compat.c
diff --git a/sysdeps/i386/fpu/Versions b/sysdeps/i386/fpu/Versions
index d37bc1eae6..9509f9b7c7 100644
--- a/sysdeps/i386/fpu/Versions
+++ b/sysdeps/i386/fpu/Versions
@@ -5,6 +5,6 @@ libm {
}
GLIBC_2.40 {
# No SVID compatible error handling.
- fmod;
+ fmod; fmodf;
}
}
diff --git a/sysdeps/i386/fpu/e_fmodf.S b/sysdeps/i386/fpu/e_fmodf.S
deleted file mode 100644
index f73ce9da1e..0000000000
--- a/sysdeps/i386/fpu/e_fmodf.S
+++ /dev/null
@@ -1,18 +0,0 @@
-/*
- * Public domain.
- */
-
-#include <machine/asm.h>
-#include <libm-alias-finite.h>
-
-ENTRY(__ieee754_fmodf)
- flds 8(%esp)
- flds 4(%esp)
-1: fprem
- fstsw %ax
- sahf
- jp 1b
- fstp %st(1)
- ret
-END(__ieee754_fmodf)
-libm_alias_finite (__ieee754_fmodf, __fmodf)
diff --git a/sysdeps/i386/fpu/e_fmodf.c b/sysdeps/i386/fpu/e_fmodf.c
new file mode 100644
index 0000000000..15a0f960bf
--- /dev/null
+++ b/sysdeps/i386/fpu/e_fmodf.c
@@ -0,0 +1,2 @@
+#define FMODF_VERSION GLIBC_2_40
+#include <sysdeps/ieee754/flt-32/e_fmodf.c>
diff --git a/sysdeps/i386/fpu/w_fmodf_compat.c b/sysdeps/i386/fpu/w_fmodf_compat.c
deleted file mode 100644
index 5a61693e51..0000000000
--- a/sysdeps/i386/fpu/w_fmodf_compat.c
+++ /dev/null
@@ -1,15 +0,0 @@
-/* i386 provides an optimized __ieee752_fmodf. */
-#include <math-svid-compat.h>
-#ifdef SHARED
-# undef SHLIB_COMPAT
-# define SHLIB_COMPAT(a, b, c) 1
-# undef LIBM_SVID_COMPAT
-# define LIBM_SVID_COMPAT 1
-# undef compat_symbol
-# define compat_symbol(a, b, c, d)
-# include <math/w_fmodf_compat.c>
-libm_alias_float (__fmod_compat, fmod)
-#else
-#include <math-type-macros-float.h>
-#include <w_fmod_template.c>
-#endif
diff --git a/sysdeps/ieee754/flt-32/e_fmodf.c b/sysdeps/ieee754/flt-32/e_fmodf.c
index ef95c05800..78071df756 100644
--- a/sysdeps/ieee754/flt-32/e_fmodf.c
+++ b/sysdeps/ieee754/flt-32/e_fmodf.c
@@ -173,7 +173,10 @@ __fmodf (float x, float y)
}
strong_alias (__fmodf, __ieee754_fmodf)
#if LIBM_SVID_COMPAT
-versioned_symbol (libm, __fmodf, fmodf, GLIBC_2_38);
+# ifndef FMODF_VERSION
+# define FMODF_VERSION GLIBC_2_38
+# endif
+versioned_symbol (libm, __fmodf, fmodf, FMODF_VERSION);
libm_alias_float_other (__fmod, fmod)
#else
libm_alias_float (__fmod, fmod)
diff --git a/sysdeps/mach/hurd/i386/libm.abilist b/sysdeps/mach/hurd/i386/libm.abilist
index 30665f8b1a..88e7538e51 100644
--- a/sysdeps/mach/hurd/i386/libm.abilist
+++ b/sysdeps/mach/hurd/i386/libm.abilist
@@ -1182,3 +1182,4 @@ GLIBC_2.35 fsqrtl F
GLIBC_2.35 hypot F
GLIBC_2.35 hypotf F
GLIBC_2.40 fmod F
+GLIBC_2.40 fmodf F
diff --git a/sysdeps/unix/sysv/linux/i386/libm.abilist b/sysdeps/unix/sysv/linux/i386/libm.abilist
index 44932f111d..c99c60161d 100644
--- a/sysdeps/unix/sysv/linux/i386/libm.abilist
+++ b/sysdeps/unix/sysv/linux/i386/libm.abilist
@@ -1189,3 +1189,4 @@ GLIBC_2.35 fsqrtl F
GLIBC_2.35 hypot F
GLIBC_2.35 hypotf F
GLIBC_2.40 fmod F
+GLIBC_2.40 fmodf F
--
2.34.1
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