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81f311c2ee
Separate benchmarks for the fast and slow implementations of pow and exp since measuring both together doesn't make sense. Adjust the iterations for pow and exp accordingly so that they run long enough for the measurements to be meaningful.
83 lines
2.6 KiB
Makefile
83 lines
2.6 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 slowexp slowpow
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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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# 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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include ../Makeconfig
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include ../Rules
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