mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-10-30 07:14:39 +08:00
Chris Tate
4c3a1d9c98
The Linux helpers linked LLVM 22.1.8's release archive. The helper's code generation is LLVM's code, so building that LLVM from its release sources with ThinLTO and with a profile of the helper's own work makes code generation 5-9% faster than the helper as released, with identical objects. - native/llvm-codegen/llvm.profdata.gz is the profile, collected by scripts/refresh-llvm-profile.mjs: it builds LLVM with IR instrumentation and an instrumented helper, and runs that helper on tsc-ts, five Effect fixtures, the runtime benchmark workloads and every 50th corpus program (scripts/llvm-helper-inputs.mjs). It follows LLVM's sources, so it needs a refresh when LLVM is bumped. - scripts/build-llvm-dist.mjs builds LLVM with that profile and ThinLTO, and packs it with a checksum. The llvm-dist workflow, run by hand, builds it for x64 and arm64, requires a helper linked against it to give the same objects as one linked against the release archive (scripts/check-llvm-dist.mjs), prints both helpers' times and the profile's mismatch count, and attaches the archive to the LLVM_DIST_TAG release of this repository. - The release workflow's Linux jobs, and the wasm32-wasi job, which also uploads the x64 GNU helper, download that archive and build the helper with SCRIPTC_LLVM_THINLTO=1: clang, lld and ThinLTO, and the profile for the helper's own sources. Without the archive, or if that build fails, the helper links the release archive as before. - The four Linux helper packages share their build in native/llvm-codegen/linux-helper.mjs. Without SCRIPTC_LLVM_THINLTO it builds the same executable as before.
21 lines
812 B
JavaScript
21 lines
812 B
JavaScript
#!/usr/bin/env node
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import { buildLinuxHelper } from "../../../native/llvm-codegen/linux-helper.mjs";
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import { readFileSync } from "node:fs";
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import { dirname, join } from "node:path";
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import { fileURLToPath } from "node:url";
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const root = dirname(dirname(fileURLToPath(import.meta.url)));
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const repo = fileURLToPath(new URL("../../..", import.meta.url));
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if (process.platform !== "linux" || process.arch !== "arm64") {
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process.stdout.write("@scriptc/llvm-linux-arm64-gnu: skipped on this host\n");
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process.exit(0);
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}
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const manifest = JSON.parse(readFileSync(join(root, "package.json"), "utf8"));
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buildLinuxHelper({
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arch: "arm64",
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libc: "gnu",
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version: manifest.version,
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build: join(repo, "node_modules/.cache/scriptc-llvm-linux-arm64-gnu"),
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output: join(root, "bin", "scriptc-llvm-codegen"),
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});
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