1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
# Copyright (C) 2013 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/>.
# Makefile for benchmark tests. The only useful target here is `bench`.
# Adding a new function `foo`:
# ---------------------------
# - Append the function name to the bench variable
# - Define foo-ARGLIST as a colon separated list of types of the input
# arguments. Use `void` if function does not take any inputs. Put in quotes
# if the input argument is a pointer, e.g.:
# malloc-ARGLIST: "void *"
# - Define foo-RET as the type the function returns. Skip if the function
# returns void. One could even skip foo-ARGLIST if the function does not
# take any inputs AND the function returns void.
# - Make a file called `foo-inputs` with one input value per line, an input
# being a comma separated list of arguments to be passed into the function.
# See pow-inputs for an example.
subdir := benchtests
bench := exp pow rint sin cos tan atan modf \
slowexp slowpow slowsin slowcos slowtan slowatan
# exp function fast path: sysdeps/ieee754/dbl-64/e_exp.c
exp-ARGLIST = double
exp-RET = double
LDFLAGS-bench-exp = -lm
# pow function fast path: sysdeps/ieee754/dbl-64/e_pow.c
pow-ARGLIST = double:double
pow-RET = double
LDFLAGS-bench-pow = -lm
rint-ARGLIST = double
rint-RET = double
LDFLAGS-bench-rint = -lm
# exp function slowest path: sysdeps/ieee754/dbl-64/mpexp.c
slowexp-ARGLIST = double
slowexp-RET = double
slowexp-INCLUDE = slowexp.c
LDFLAGS-bench-slowexp = -lm
# sin function fast path: sysdeps/ieee754/dbl-64/s_sin.c
sin-ARGLIST = double
sin-RET = double
LDFLAGS-bench-sin = -lm
# cos function fast path: sysdeps/ieee754/dbl-64/s_sin.c
cos-ARGLIST = double
cos-RET = double
LDFLAGS-bench-cos = -lm
# tan function fast path: sysdeps/ieee754/dbl-64/s_tan.c
tan-ARGLIST = double
tan-RET = double
LDFLAGS-bench-tan = -lm
# atan function fast path: sysdeps/ieee754/dbl-64/s_atan.c
atan-ARGLIST = double
atan-RET = double
LDFLAGS-bench-atan = -lm
# pow function slowest path: sysdeps/ieee754/dbl-64/slowpow.c
slowpow-ARGLIST = double:double
slowpow-RET = double
slowpow-INCLUDE = slowpow.c
LDFLAGS-bench-slowpow = -lm
# sin function slowest path: sysdeps/ieee754/dbl-64/sincos32.c
slowsin-ARGLIST = double
slowsin-RET = double
slowsin-INCLUDE = slowsin.c
LDFLAGS-bench-slowsin = -lm
# cos function slowest path: sysdeps/ieee754/dbl-64/sincos32.c
slowcos-ARGLIST = double
slowcos-RET = double
slowcos-INCLUDE = slowcos.c
LDFLAGS-bench-slowcos = -lm
# tan function slowest path: sysdeps/ieee754/dbl-64/mptan.c
slowtan-ARGLIST = double
slowtan-RET = double
slowtan-INCLUDE = slowtan.c
LDFLAGS-bench-slowtan = -lm
# atan function slowest path: sysdeps/ieee754/dbl-64/mpatan.c
slowatan-ARGLIST = double
slowatan-RET = double
slowatan-INCLUDE = slowatan.c
LDFLAGS-bench-slowatan = -lm
# Rules to build and execute the benchmarks. Do not put any benchmark
# parameters beyond this point.
include ../Makeconfig
include ../Rules
binaries-bench := $(addprefix $(objpfx)bench-,$(bench))
# The default duration: 10 seconds.
ifndef BENCH_DURATION
BENCH_DURATION := 10
endif
CPPFLAGS-nonlib = -DDURATION=$(BENCH_DURATION)
# This makes sure CPPFLAGS-nonlib and CFLAGS-nonlib are passed
# for all these modules.
cpp-srcs-left := $(binaries-bench:=.c)
lib := nonlib
include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
bench-deps := bench-skeleton.c Makefile
run-bench = $(test-wrapper-env) \
GCONV_PATH=$(common-objpfx)iconvdata LC_ALL=C \
$($*-ENV) $(rtld-prefix) $${run}
bench-clean:
rm -f $(binaries-bench) $(addsuffix .o,$(binaries-bench))
bench: $(binaries-bench)
{ for run in $^; do \
echo "Running $${run}" >&2; \
$(run-bench); \
done; } > $(objpfx)bench.out-tmp; \
if [ -f $(objpfx)bench.out ]; then \
mv -f $(objpfx)bench.out $(objpfx)bench.out.old; \
fi; \
mv -f $(objpfx)bench.out-tmp $(objpfx)bench.out
$(binaries-bench): %: %.o \
$(sort $(filter $(common-objpfx)lib%,$(link-libc))) \
$(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit)
$(+link)
$(objpfx)bench-%.c: %-inputs $(bench-deps)
{ if [ -n "$($*-INCLUDE)" ]; then \
cat $($*-INCLUDE); \
fi; \
$(..)scripts/bench.pl $(patsubst %-inputs,%,$<) \
$($*-ARGLIST) $($*-RET); } > $@-tmp
mv -f $@-tmp $@
|
