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checkasm: improve print format

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Port dav1d's checkasm output format to FFmpeg's checkasm, includes
relative speedups and aligns results.

Signed-off-by: J. Dekker <jdek@itanimul.li>
Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
J. Dekker 2024-07-31 10:56:15 +00:00 committed by Paul B Mahol
parent 045f9e52ca
commit 550c48eac8
1 changed files with 48 additions and 5 deletions
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53
tests/checkasm/checkasm.c
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@ -18,6 +18,31 @@
* You should have received a copy of the GNU General Public License along
* with FFmpeg; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Copyright © 2018, VideoLAN and dav1d authors
* Copyright © 2018, Two Orioles, LLC
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
@ -579,6 +604,16 @@ static int measure_nop_time(void)
return nop_sum / 500;
}
static inline double avg_cycles_per_call(const CheckasmPerf *const p)
{
if (p->iterations) {
const double cycles = (double)(10 * p->cycles) / p->iterations - state.nop_time;
if (cycles > 0.0)
return cycles / 4.0; /* 4 calls per iteration */
}
return 0.0;
}
/* Print benchmark results */
static void print_benchs(CheckasmFunc *f)
{
@ -588,17 +623,25 @@ static void print_benchs(CheckasmFunc *f)
/* Only print functions with at least one assembly version */
if (f->versions.cpu || f->versions.next) {
CheckasmFuncVersion *v = &f->versions;
const CheckasmPerf *p = &v->perf;
const double baseline = avg_cycles_per_call(p);
double decicycles;
do {
CheckasmPerf *p = &v->perf;
if (p->iterations) {
int decicycles = (10*p->cycles/p->iterations - state.nop_time) / 4;
p = &v->perf;
decicycles = avg_cycles_per_call(p);
if (state.csv || state.tsv) {
const char sep = state.csv ? ',' : '\t';
printf("%s%c%s%c%d.%d\n", f->name, sep,
printf("%s%c%s%c%.1f\n", f->name, sep,
cpu_suffix(v->cpu), sep,
decicycles / 10, decicycles % 10);
decicycles / 10.0);
} else {
printf("%s_%s: %d.%d\n", f->name, cpu_suffix(v->cpu), decicycles/10, decicycles%10);
const int pad_length = 10 + 50 -
printf("%s_%s:", f->name, cpu_suffix(v->cpu));
const double ratio = decicycles ?
baseline / decicycles : 0.0;
printf("%*.1f (%5.2fx)\n", FFMAX(pad_length, 0),
decicycles / 10.0, ratio);
}
}
} while ((v = v->next));