1 # Copyright (C) 2013-2014 Free Software Foundation, Inc.
2 # This file is part of the GNU C Library.
4 # The GNU C Library is free software; you can redistribute it and/or
5 # modify it under the terms of the GNU Lesser General Public
6 # License as published by the Free Software Foundation; either
7 # version 2.1 of the License, or (at your option) any later version.
9 # The GNU C Library is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 # Lesser General Public License for more details.
14 # You should have received a copy of the GNU Lesser General Public
15 # License along with the GNU C Library; if not, see
16 # <http://www.gnu.org/licenses/>.
19 # Makefile for benchmark tests. The only useful target here is `bench`.
20 # Add benchmark functions in alphabetical order.
26 bench := acos acosh asin asinh atan atanh cos cosh exp exp2 log log2 modf pow \
27 rint sin sincos sinh sqrt tan tanh
29 # String function benchmarks.
30 string-bench := bcopy bzero memccpy memchr memcmp memcpy memmem memmove \
31 mempcpy memset rawmemchr stpcpy stpncpy strcasecmp strcasestr \
32 strcat strchr strchrnul strcmp strcpy strcspn strlen \
33 strncasecmp strncat strncmp strncpy strnlen strpbrk strrchr \
34 strspn strstr strcpy_chk stpcpy_chk memrchr strsep strtok
35 string-bench-all := $(string-bench)
37 stdlib-bench := strtod
39 benchset := $(string-bench-all) $(stdlib-bench)
41 LDLIBS-bench-acos = -lm
42 LDLIBS-bench-acosh = -lm
43 LDLIBS-bench-asin = -lm
44 LDLIBS-bench-asinh = -lm
45 LDLIBS-bench-atan = -lm
46 LDLIBS-bench-atanh = -lm
47 LDLIBS-bench-cos = -lm
48 LDLIBS-bench-cosh = -lm
49 LDLIBS-bench-exp = -lm
50 LDLIBS-bench-exp2 = -lm
51 LDLIBS-bench-log = -lm
52 LDLIBS-bench-log2 = -lm
53 LDLIBS-bench-pow = -lm
54 LDLIBS-bench-rint = -lm
55 LDLIBS-bench-sin = -lm
56 LDLIBS-bench-sinh = -lm
57 LDLIBS-bench-sqrt = -lm
58 LDLIBS-bench-tan = -lm
59 LDLIBS-bench-tanh = -lm
60 LDLIBS-bench-sincos = -lm
64 # Rules to build and execute the benchmarks. Do not put any benchmark
65 # parameters beyond this point.
67 # We don't want the benchmark programs to run in parallel since that could
68 # affect their performance.
73 binaries-bench := $(addprefix $(objpfx)bench-,$(bench))
74 binaries-benchset := $(addprefix $(objpfx)bench-,$(benchset))
76 # The default duration: 10 seconds.
81 CPPFLAGS-nonlib += -DDURATION=$(BENCH_DURATION)
83 # Use clock_gettime to measure performance of functions. The default is to use
84 # HP_TIMING if it is available.
85 ifdef USE_CLOCK_GETTIME
86 CPPFLAGS-nonlib += -DUSE_CLOCK_GETTIME
89 # This makes sure CPPFLAGS-nonlib and CFLAGS-nonlib are passed
90 # for all these modules.
91 cpp-srcs-left := $(binaries-benchset:=.c) $(binaries-bench:=.c)
93 include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
95 bench-deps := bench-skeleton.c bench-timing.h Makefile
97 run-bench = $(test-wrapper-env) \
98 GCONV_PATH=$(common-objpfx)iconvdata LC_ALL=C \
99 $($*-ENV) $(rtld-prefix) $${run}
102 rm -f $(binaries-bench) $(addsuffix .o,$(binaries-bench))
103 rm -f $(binaries-benchset) $(addsuffix .o,$(binaries-benchset))
105 bench: bench-set bench-func
107 bench-set: $(binaries-benchset)
109 echo "Running $${run}"; \
110 $(run-bench) > $${run}.out; \
113 bench-func: $(binaries-bench)
114 { for run in $^; do \
115 echo "Running $${run}" >&2; \
117 done; } > $(objpfx)bench.out-tmp; \
118 if [ -f $(objpfx)bench.out ]; then \
119 mv -f $(objpfx)bench.out $(objpfx)bench.out.old; \
121 mv -f $(objpfx)bench.out-tmp $(objpfx)bench.out
123 $(binaries-bench) $(binaries-benchset): %: %.o \
124 $(sort $(filter $(common-objpfx)lib%,$(link-libc))) \
125 $(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit)
128 $(objpfx)bench-%.c: %-inputs $(bench-deps)
129 { if [ -n "$($*-INCLUDE)" ]; then \
132 $(.)scripts/bench.py $(patsubst %-inputs,%,$<); } > $@-tmp