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143 lines
4.1 KiB
Makefile
143 lines
4.1 KiB
Makefile
# Copyright (C) 2013 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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# The GNU C Library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
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# License along with the GNU C Library; if not, see
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# <http://www.gnu.org/licenses/>.
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# Makefile for benchmark tests. The only useful target here is `bench`.
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# Adding a new function `foo`:
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# ---------------------------
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# - Append the function name to the bench variable
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# - Define foo-ITER with the number of iterations you want to run. Keep it
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# high enough that the overhead of clock_gettime is only a small fraction of
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# the total run time of the test. A good idea would be to keep the run time
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# of each test at around 10 seconds for x86_64. That is just a guideline,
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# since some scenarios may require higher run times.
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# - Define foo-ARGLIST as a colon separated list of types of the input
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# arguments. Use `void` if function does not take any inputs. Put in quotes
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# if the input argument is a pointer, e.g.:
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# malloc-ARGLIST: "void *"
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# - Define foo-RET as the type the function returns. Skip if the function
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# returns void. One could even skip foo-ARGLIST if the function does not
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# take any inputs AND the function returns void.
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# - Make a file called `foo-inputs` with one input value per line, an input
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# being a comma separated list of arguments to be passed into the function.
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# See pow-inputs for an example.
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subdir := benchtests
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bench := exp pow rint sin atan slowexp slowpow slowsin slowatan
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# exp function fast path
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exp-ITER = 5e8
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exp-ARGLIST = double
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exp-RET = double
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LDFLAGS-bench-exp = -lm
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# pow function fast path
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pow-ITER = 2e8
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pow-ARGLIST = double:double
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pow-RET = double
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LDFLAGS-bench-pow = -lm
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rint-ITER = 250000000
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rint-ARGLIST = double
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rint-RET = double
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LDFLAGS-bench-rint = -lm
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# exp function slowest path
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slowexp-ITER = 3e5
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slowexp-ARGLIST = double
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slowexp-RET = double
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slowexp-INCLUDE = slowexp.c
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LDFLAGS-bench-slowexp = -lm
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# sin function fast path
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sin-ITER = 3e9
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sin-ARGLIST = double
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sin-RET = double
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LDFLAGS-bench-sin = -lm
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# atan function fast path
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atan-ITER = 6e9
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atan-ARGLIST = double
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atan-RET = double
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LDFLAGS-bench-atan = -lm
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# pow function slowest path
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slowpow-ITER = 1e5
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slowpow-ARGLIST = double:double
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slowpow-RET = double
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slowpow-INCLUDE = slowpow.c
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LDFLAGS-bench-slowpow = -lm
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# sin function slowest path
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slowsin-ITER = 3e7
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slowsin-ARGLIST = double
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slowsin-RET = double
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slowsin-INCLUDE = slowsin.c
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LDFLAGS-bench-slowsin = -lm
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# atan function slowest path
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slowatan-ITER = 3e8
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slowatan-ARGLIST = double
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slowatan-RET = double
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slowatan-INCLUDE = slowatan.c
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LDFLAGS-bench-slowatan = -lm
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# Rules to build and execute the benchmarks. Do not put any benchmark
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# parameters beyond this point.
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include ../Makeconfig
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include ../Rules
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binaries-bench := $(addprefix $(objpfx)bench-,$(bench))
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run-bench = $(test-wrapper-env) \
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GCONV_PATH=$(common-objpfx)iconvdata LC_ALL=C \
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$($*-ENV) $(rtld-prefix) $${run}
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bench: $(binaries-bench)
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for run in $^; do \
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echo "Running $${run}"; \
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$(run-bench) >> $(objpfx)bench.out-tmp; \
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done; \
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if [ -f $(objpfx)bench.out ]; then \
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mv -f $(objpfx)bench.out $(objpfx)bench.out.old; \
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fi; \
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mv -f $(objpfx)bench.out-tmp $(objpfx)bench.out
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$(binaries-bench): %: %.o \
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$(sort $(filter $(common-objpfx)lib%,$(link-libc))) \
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$(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit)
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$(+link)
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$(objpfx)bench-%.c: %-inputs bench-skeleton.c
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{ if [ -n "$($*-INCLUDE)" ]; then \
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cat $($*-INCLUDE); \
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fi; \
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$(..)scripts/bench.pl $(patsubst %-inputs,%,$<) \
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$($*-ITER) $($*-ARGLIST) $($*-RET); } > $@-tmp
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mv -f $@-tmp $@
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