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Add logf and log2f benchmark

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Similar to expf/exp2f, this patch add two benchmarks for logf and log2f:
one which measures thoughput and one which measures latency.

The input data is based on a reduced trace based on 2.8 billion samples
extracted from specpu2017 521.wrf_r benchmark.

Test: ran 32-bit and 64-bit x86 tests on host
Change-Id: If4fbd7eb3d40f8e155935149a82f162b222d5506
This commit is contained in:
Adhemerval Zanella 2018-06-05 15:47:06 -03:00
parent 872c8b5133
commit ff5a353112
2 changed files with 2962 additions and 0 deletions
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2916
benchmarks/logf_input.cpp Normal file
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46
benchmarks/math_benchmark.cpp
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@ -302,3 +302,49 @@ static void BM_math_powf_speccpu2017_latency(benchmark::State& state) {
} }
} }
BIONIC_BENCHMARK(BM_math_powf_speccpu2017_latency); BIONIC_BENCHMARK(BM_math_powf_speccpu2017_latency);
#include "logf_input.cpp"
static void BM_math_logf_speccpu2017(benchmark::State& state) {
f = 0.0;
auto cin = logf_input.cbegin();
for (auto _ : state) {
f = logf(*cin);
if (++cin == logf_input.cend())
cin = logf_input.cbegin();
}
}
BIONIC_BENCHMARK(BM_math_logf_speccpu2017);
static void BM_math_logf_speccpu2017_latency(benchmark::State& state) {
f = 0.0;
auto cin = logf_input.cbegin();
for (auto _ : state) {
f = logf(f * zero + *cin);
if (++cin == logf_input.cend())
cin = logf_input.cbegin();
}
}
BIONIC_BENCHMARK(BM_math_logf_speccpu2017_latency);
static void BM_math_log2f_speccpu2017(benchmark::State& state) {
f = 0.0;
auto cin = logf_input.cbegin();
for (auto _ : state) {
f = log2f(*cin);
if (++cin == logf_input.cend())
cin = logf_input.cbegin();
}
}
BIONIC_BENCHMARK(BM_math_log2f_speccpu2017);
static void BM_math_log2f_speccpu2017_latency(benchmark::State& state) {
f = 0.0;
auto cin = logf_input.cbegin();
for (auto _ : state) {
f = log2f(f * zero + *cin);
if (++cin == logf_input.cend())
cin = logf_input.cbegin();
}
}
BIONIC_BENCHMARK(BM_math_log2f_speccpu2017_latency);