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benchmark.ts
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/
benchmark.ts
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import { stat } from 'fs-extra';
import { writeFile, readFile } from 'fs-extra';
import { testPrograms } from './test-cases';
import { TestProgram } from './test-cases';
import { compile } from './frontend';
import { Backend } from './api';
import * as commander from 'commander';
import { zip } from 'lodash';
import mipsBackend from './backends/mips';
import jsBackend from './backends/js';
import cBackend from './backends/c';
import x64Backend from './backends/x64';
commander
.option('--before <file>')
.option('--after <file>')
.option('--out <file>')
.parse(process.argv);
const before = commander.before;
const after = commander.after;
const out = commander.out;
if ((before && !after) || (after && !before)) {
console.log('--before and --after must be specified at the same time');
process.exit(-1);
}
const fmtNum = num =>
(num <= 0
? num.toLocaleString(undefined, { maximumFractionDigits: 2, minimumFractionDigits: 2 })
: '+' +
num.toLocaleString(undefined, {
maximumFractionDigits: 2,
minimumFractionDigits: 2,
})) + '%';
if (!before) {
(async () => {
const results = await Promise.all(
testPrograms.map(async ({ name, source, failingBackends }: TestProgram) => {
if (failingBackends !== undefined && failingBackends.length != 0) {
return;
}
const frontendOutput = compile(source);
if (
'parseErrors' in frontendOutput ||
'typeErrors' in frontendOutput ||
'kind' in frontendOutput ||
'internalError' in frontendOutput
) {
console.log(`Failed to compile ${name}`);
return;
}
const backends: Backend[] = [jsBackend, cBackend, mipsBackend, x64Backend];
const [jsSize, cSize, mipsSize, x64Size] = await Promise.all(
backends.map(async (backend: Backend) => {
const targetSource = await backend.compile(frontendOutput);
if ('error' in targetSource) {
throw new Error(
`Failed to compile ${name} to ${backend.name}: ${targetSource.error}`
);
}
const compilationResult = await backend.finishCompilation(
targetSource.target,
targetSource.tac
);
if ('error' in compilationResult) {
throw new Error(
`Failed to compile ${name} to ${backend.name}: ${compilationResult.error}`
);
}
return (await stat(compilationResult.binaryFile.path)).size;
})
);
return {
name,
'JS Binary Size (bytes)': jsSize,
'C Binary Size (bytes)': cSize,
'Mips Binary Size (bytes)': mipsSize,
'x64 Binary Size (bytes)': x64Size,
};
})
);
const successfulResults = results.filter(Boolean);
if (out) {
await writeFile(out, JSON.stringify(successfulResults));
} else {
console.table(successfulResults);
}
})();
} else {
(async () => {
const beforeJson = JSON.parse(await readFile(before, 'utf8'));
const afterJson = JSON.parse(await readFile(after, 'utf8'));
const jsons = zip(beforeJson, afterJson);
const comparisons = jsons.map(([beforeStat, afterStat]) => {
if (beforeStat.name != afterStat.name) {
console.log(
'Name mismatch! Make sure to generate before and after using the same test cases'
);
process.exit(-1);
}
return {
name: beforeStat.name,
'JS Binary Size': fmtNum(
100 *
-(
1 -
afterStat['JS Binary Size (bytes)'] /
beforeStat['JS Binary Size (bytes)']
)
),
'C Binary Size': fmtNum(
100 *
-(
1 -
afterStat['C Binary Size (bytes)'] /
beforeStat['C Binary Size (bytes)']
)
),
'Mips Binary Size': fmtNum(
100 *
-(
1 -
afterStat['Mips Binary Size (bytes)'] /
beforeStat['Mips Binary Size (bytes)']
)
),
'x64 Binary Size': fmtNum(
100 *
-(
1 -
afterStat['x64 Binary Size (bytes)'] /
beforeStat['x64 Binary Size (bytes)']
)
),
};
});
console.table(comparisons);
})();
}