1 # Copyright (C) 2013 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`.
21 # Adding a new function `foo`:
22 # ---------------------------
24 # - Append the function name to the bench variable
26 # - Define foo-ARGLIST as a colon separated list of types of the input
27 # arguments. Use `void` if function does not take any inputs. Put in quotes
28 # if the input argument is a pointer, e.g.:
30 # malloc-ARGLIST: "void *"
32 # - Define foo-RET as the type the function returns. Skip if the function
33 # returns void. One could even skip foo-ARGLIST if the function does not
34 # take any inputs AND the function returns void.
37 # - Make a file called `foo-inputs` with one input value per line, an input
38 # being a comma separated list of arguments to be passed into the function.
39 # See pow-inputs for an example.
42 bench
:= exp pow rint sin cos tan atan modf
46 LDFLAGS-bench-exp
= -lm
48 pow-ARGLIST
= double
:double
50 LDFLAGS-bench-pow
= -lm
54 LDFLAGS-bench-rint
= -lm
58 LDFLAGS-bench-sin
= -lm
62 LDFLAGS-bench-cos
= -lm
66 LDFLAGS-bench-tan
= -lm
70 LDFLAGS-bench-atan
= -lm
74 # Rules to build and execute the benchmarks. Do not put any benchmark
75 # parameters beyond this point.
80 binaries-bench
:= $(addprefix $(objpfx
)bench-
,$(bench
))
82 # The default duration: 10 seconds.
87 CPPFLAGS-nonlib
= -DDURATION
=$(BENCH_DURATION
)
89 # This makes sure CPPFLAGS-nonlib and CFLAGS-nonlib are passed
90 # for all these modules.
91 cpp-srcs-left
:= $(binaries-bench
:=.c
)
93 include $(patsubst %,$(..
)cppflags-iterator.mk
,$(cpp-srcs-left
))
95 bench-deps
:= bench-skeleton.c Makefile
97 run-bench
= $(test-wrapper-env
) \
98 GCONV_PATH
=$(common-objpfx
)iconvdata LC_ALL
=C \
99 $($*-ENV
) $(rtld-prefix
) $${run}
102 rm -f
$(binaries-bench
) $(addsuffix .o
,$(binaries-bench
))
104 bench
: $(binaries-bench
)
105 { for run in
$^
; do \
106 echo
"Running $${run}" >&2; \
108 done
; } > $(objpfx
)bench.out-tmp
; \
109 if
[ -f
$(objpfx
)bench.out
]; then \
110 mv
-f
$(objpfx
)bench.out
$(objpfx
)bench.out.old
; \
112 mv
-f
$(objpfx
)bench.out-tmp
$(objpfx
)bench.out
114 $(binaries-bench
): %: %.o \
115 $(sort $(filter $(common-objpfx
)lib
%,$(link-libc
))) \
116 $(addprefix $(csu-objpfx
),start.o
) $(+preinit
) $(+postinit
)
119 $(objpfx
)bench-
%.c
: %-inputs
$(bench-deps
)
120 { if
[ -n
"$($*-INCLUDE)" ]; then \
123 $(..
)scripts
/bench.pl
$(patsubst %-inputs
,%,$<) \
124 $($*-ARGLIST
) $($*-RET
); } > $@
-tmp