mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-10-22 05:59:31 +08:00
Malte Ubl
2372b75ec2
Speed is a third native optimization posture next to release (default, -O2) and dev (-O0). It is optimized exactly like release at the C/LLVM level and is the switch for optimizations that trade executable size and build time for run-time speed, so the default release build stays inside the binary-size budget. - backend/optimization.ts: the NativeOptimization type, its -O class, and cache-key helpers. Release keeps its historical key shapes (absent). - CLI: build/run/cache warm accept speed; usage text names the trade. Bootstrap's routed executable cache mirrors the posture. - Early executable cache keys and native-feature validation include speed, so release, dev, and speed entries never satisfy one another. - Runtime packs: an optional executable `speed` flavor (-O2, only beside release). Speed links it when present and the release objects otherwise; library modes link their release flavor. The sanitizer lane follows the same flavor key. - Library profiles accept "speed". - WASI release-only linker flags apply to speed too. - bench-runtime: --baseline-optimization/--candidate-optimization and a per-contender cold_build_ms. Release executables are byte-identical to the stack tip for all 14 benchmark workloads (macOS arm64, sha256 of executables built from both trees).
45 lines
1.7 KiB
TypeScript
45 lines
1.7 KiB
TypeScript
import { execFile } from "node:child_process";
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import { mkdtemp, rm, writeFile } from "node:fs/promises";
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import { tmpdir } from "node:os";
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import { join } from "node:path";
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import { promisify } from "node:util";
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import { expect, test } from "vitest";
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const execFileAsync = promisify(execFile);
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const repoRoot = join(import.meta.dirname, "../../..");
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const bootstrap = join(repoRoot, "packages/cli/dist/bootstrap.js");
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test("--optimization accepts release, dev, and speed and names them when rejecting", async () => {
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const dir = await mkdtemp(join(tmpdir(), "scriptc-cli-optimization-"));
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try {
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const entry = join(dir, "main.ts");
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await writeFile(entry, 'console.log("posture");\n');
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const env = { ...process.env, SCRIPTC_CACHE_DIR: join(dir, "cache") };
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const help = await execFileAsync(process.execPath, [bootstrap, "--help"], { env });
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expect(help.stdout).toContain("--optimization <release|dev|speed>");
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for (const args of [
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["build", entry, "--optimization=fast"],
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["run", entry, "--optimization", "O3"],
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["cache", "warm", "--optimization=fast"],
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]) {
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await expect(
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execFileAsync(process.execPath, [bootstrap, ...args], { env }),
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).rejects.toMatchObject({
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stderr: expect.stringContaining("(supported: release, dev, speed)"),
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});
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}
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// Speed is an executable posture like release and dev.
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await expect(
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execFileAsync(
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process.execPath,
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[bootstrap, "build", entry, "--emit=llvm", "--optimization=speed"],
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{ env },
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),
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).rejects.toMatchObject({
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stderr: expect.stringContaining("--optimization is only meaningful with --emit=exe"),
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});
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} finally {
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await rm(dir, { recursive: true, force: true });
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}
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}, 60_000);
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