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asc.js
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/**
* @license
* Copyright 2020 Daniel Wirtz / The AssemblyScript Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @fileoverview Compiler frontend for node.js
*
* Uses the low-level API exported from src/index.ts so it works with the compiler compiled to
* JavaScript as well as the compiler compiled to WebAssembly (eventually). Runs the sources
* directly through ts-node if distribution files are not present (indicated by a `-dev` version).
*
* Can also be packaged as a bundle suitable for in-browser use with the standard library injected
* in the build step. See dist/asc.js for the bundle and webpack.config.js for building details.
*/
// Use "." instead of "/" as cwd in browsers
if (process.browser) process.cwd = function() { return "."; };
const fs = require("fs");
const path = require("path");
const utf8 = require("./util/utf8");
const colorsUtil = require("./util/colors");
const optionsUtil = require("./util/options");
const mkdirp = require("./util/mkdirp");
const find = require("./util/find");
const EOL = process.platform === "win32" ? "\r\n" : "\n";
const SEP = process.platform === "win32" ? "\\" : "/";
const binaryen = global.Binaryen || (global.Binaryen = require("binaryen"));
// Proxy Binaryen's ready event
Object.defineProperty(exports, "ready", {
get: function() { return binaryen.ready; }
});
// Emscripten adds an `uncaughtException` listener to Binaryen that results in an additional
// useless code fragment on top of an actual error. suppress this:
if (process.removeAllListeners) process.removeAllListeners("uncaughtException");
// Use distribution files if present, otherwise run the sources directly
var assemblyscript, isDev = false;
try { // `asc` on the command line
assemblyscript = require("../dist/assemblyscript.js");
} catch (e) {
try { // `asc` on the command line without dist files
require("ts-node").register({
project: path.join(__dirname, "..", "src", "tsconfig.json"),
skipIgnore: true,
compilerOptions: { target: "ES2016" }
});
require("../src/glue/js");
assemblyscript = require("../src");
isDev = true;
} catch (e_ts) {
try { // `require("dist/asc.js")` in explicit browser tests
assemblyscript = eval("require('./assemblyscript')");
} catch (e) {
throw Error(e_ts.stack + "\n---\n" + e.stack);
}
}
}
/** Whether this is a webpack bundle or not. */
exports.isBundle = typeof BUNDLE_VERSION === "string";
/** Whether asc runs the sources directly or not. */
exports.isDev = isDev;
/** AssemblyScript version. */
exports.version = exports.isBundle ? BUNDLE_VERSION : require("../package.json").version;
/** Available CLI options. */
exports.options = require("./asc.json");
/** Prefix used for library files. */
exports.libraryPrefix = assemblyscript.LIBRARY_PREFIX;
/** Default Binaryen optimization level. */
exports.defaultOptimizeLevel = 3;
/** Default Binaryen shrink level. */
exports.defaultShrinkLevel = 1;
/** Bundled library files. */
exports.libraryFiles = exports.isBundle ? BUNDLE_LIBRARY : (() => { // set up if not a bundle
const libDir = path.join(__dirname, "..", "std", "assembly");
const bundled = {};
find.files(libDir, find.TS_EXCEPT_DTS)
.forEach(file => bundled[file.replace(/\.ts$/, "")] = fs.readFileSync(path.join(libDir, file), "utf8" ));
return bundled;
})();
/** Bundled definition files. */
exports.definitionFiles = exports.isBundle ? BUNDLE_DEFINITIONS : (() => { // set up if not a bundle
const stdDir = path.join(__dirname, "..", "std");
return {
"assembly": fs.readFileSync(path.join(stdDir, "assembly", "index.d.ts"), "utf8"),
"portable": fs.readFileSync(path.join(stdDir, "portable", "index.d.ts"), "utf8")
};
})();
/** Convenience function that parses and compiles source strings directly. */
exports.compileString = (sources, options) => {
if (typeof sources === "string") sources = { "input.ts": sources };
const output = Object.create({
stdout: createMemoryStream(),
stderr: createMemoryStream()
});
var argv = [
"--binaryFile", "binary",
"--textFile", "text",
];
Object.keys(options || {}).forEach(key => {
var val = options[key];
var opt = exports.options[key];
if (opt && opt.type === "b") {
if (val) argv.push("--" + key);
} else {
if (Array.isArray(val)) val.forEach(val => argv.push("--" + key, String(val)));
else argv.push("--" + key, String(val));
}
});
exports.main(argv.concat(Object.keys(sources)), {
stdout: output.stdout,
stderr: output.stderr,
readFile: name => sources.hasOwnProperty(name) ? sources[name] : null,
writeFile: (name, contents) => output[name] = contents,
listFiles: () => []
});
return output;
}
/** Runs the command line utility using the specified arguments array. */
exports.main = function main(argv, options, callback) {
if (typeof options === "function") {
callback = options;
options = {};
} else if (!options) {
options = {};
}
const stdout = options.stdout || process.stdout;
const stderr = options.stderr || process.stderr;
const readFile = options.readFile || readFileNode;
const writeFile = options.writeFile || writeFileNode;
const listFiles = options.listFiles || listFilesNode;
const stats = options.stats || createStats();
// Output must be specified if not present in the environment
if (!stdout) throw Error("'options.stdout' must be specified");
if (!stderr) throw Error("'options.stderr' must be specified");
const opts = optionsUtil.parse(argv, exports.options);
const args = opts.options;
argv = opts.arguments;
if (args.noColors) {
colorsUtil.stdout.supported =
colorsUtil.stderr.supported = false;
} else {
colorsUtil.stdout = colorsUtil.from(stdout);
colorsUtil.stderr = colorsUtil.from(stderr);
}
// Check for unknown arguments
if (opts.unknown.length) {
opts.unknown.forEach(arg => {
stderr.write(colorsUtil.stderr.yellow("WARN: ") + "Unknown option '" + arg + "'" + EOL);
});
}
// Check for trailing arguments
if (opts.trailing.length) {
stderr.write(colorsUtil.stderr.yellow("WARN: ") + "Unsupported trailing arguments: " + opts.trailing.join(" ") + EOL);
}
// Use default callback if none is provided
if (!callback) callback = function defaultCallback(err) {
var code = 0;
if (err) {
stderr.write(colorsUtil.stderr.red("ERROR: ") + err.stack.replace(/^ERROR: /i, "") + EOL);
code = 1;
}
return code;
};
// Just print the version if requested
if (args.version) {
stdout.write("Version " + exports.version + (isDev ? "-dev" : "") + EOL);
return callback(null);
}
// Print the help message if requested or no source files are provided
if (args.help || !argv.length) {
var out = args.help ? stdout : stderr;
var color = args.help ? colorsUtil.stdout : colorsUtil.stderr;
out.write([
color.white("SYNTAX"),
" " + color.cyan("asc") + " [entryFile ...] [options]",
"",
color.white("EXAMPLES"),
" " + color.cyan("asc") + " hello.ts",
" " + color.cyan("asc") + " hello.ts -b hello.wasm -t hello.wat",
" " + color.cyan("asc") + " hello1.ts hello2.ts -b -O > hello.wasm",
"",
color.white("OPTIONS"),
].concat(
optionsUtil.help(exports.options, 24, EOL)
).join(EOL) + EOL);
return callback(null);
}
// I/O must be specified if not present in the environment
if (!fs.readFileSync) {
if (readFile === readFileNode) throw Error("'options.readFile' must be specified");
if (writeFile === writeFileNode) throw Error("'options.writeFile' must be specified");
if (listFiles === listFilesNode) throw Error("'options.listFiles' must be specified");
}
// Set up base directory
const baseDir = args.baseDir ? path.resolve(args.baseDir) : ".";
// Set up options
const compilerOptions = assemblyscript.newOptions();
assemblyscript.setTarget(compilerOptions, 0);
assemblyscript.setNoAssert(compilerOptions, args.noAssert);
assemblyscript.setImportMemory(compilerOptions, args.importMemory);
assemblyscript.setSharedMemory(compilerOptions, args.sharedMemory);
assemblyscript.setImportTable(compilerOptions, args.importTable);
assemblyscript.setExportTable(compilerOptions, args.exportTable);
assemblyscript.setExplicitStart(compilerOptions, args.explicitStart);
assemblyscript.setMemoryBase(compilerOptions, args.memoryBase >>> 0);
assemblyscript.setTableBase(compilerOptions, args.tableBase >>> 0);
assemblyscript.setSourceMap(compilerOptions, args.sourceMap != null);
assemblyscript.setNoUnsafe(compilerOptions, args.noUnsafe);
assemblyscript.setPedantic(compilerOptions, args.pedantic);
assemblyscript.setLowMemoryLimit(compilerOptions, args.lowMemoryLimit >>> 0);
// Add or override aliases if specified
if (args.use) {
let aliases = args.use;
for (let i = 0, k = aliases.length; i < k; ++i) {
let part = aliases[i];
let p = part.indexOf("=");
if (p < 0) return callback(Error("Global alias '" + part + "' is invalid."));
let alias = part.substring(0, p).trim();
let name = part.substring(p + 1).trim();
if (!alias.length) return callback(Error("Global alias '" + part + "' is invalid."));
assemblyscript.setGlobalAlias(compilerOptions, alias, name);
}
}
// Disable default features if specified
var features;
if ((features = args.disable) != null) {
if (typeof features === "string") features = features.split(",");
for (let i = 0, k = features.length; i < k; ++i) {
let name = features[i].trim();
let flag = assemblyscript["FEATURE_" + name.replace(/\-/g, "_").toUpperCase()];
if (!flag) return callback(Error("Feature '" + name + "' is unknown."));
assemblyscript.disableFeature(compilerOptions, flag);
}
}
// Enable experimental features if specified
if ((features = args.enable) != null) {
if (typeof features === "string") features = features.split(",");
for (let i = 0, k = features.length; i < k; ++i) {
let name = features[i].trim();
let flag = assemblyscript["FEATURE_" + name.replace(/\-/g, "_").toUpperCase()];
if (!flag) return callback(Error("Feature '" + name + "' is unknown."));
assemblyscript.enableFeature(compilerOptions, flag);
}
}
// Set up optimization levels
var optimizeLevel = 0;
var shrinkLevel = 0;
if (args.optimize) {
optimizeLevel = exports.defaultOptimizeLevel;
shrinkLevel = exports.defaultShrinkLevel;
}
if (typeof args.optimizeLevel === "number") optimizeLevel = args.optimizeLevel;
if (typeof args.shrinkLevel === "number") shrinkLevel = args.shrinkLevel;
optimizeLevel = Math.min(Math.max(optimizeLevel, 0), 3);
shrinkLevel = Math.min(Math.max(shrinkLevel, 0), 2);
assemblyscript.setOptimizeLevelHints(compilerOptions, optimizeLevel, shrinkLevel);
// Initialize the program
const program = assemblyscript.newProgram(compilerOptions);
// Set up transforms
const transforms = [];
if (args.transform) {
let tsNodeRegistered = false;
let transformArgs = args.transform;
for (let i = 0, k = transformArgs.length; i < k; ++i) {
let filename = transformArgs[i].trim();
if (!tsNodeRegistered && filename.endsWith('.ts')) {
require("ts-node").register({ transpileOnly: true, skipProject: true, compilerOptions: { target: "ES2016" } });
tsNodeRegistered = true;
}
try {
const classOrModule = require(require.resolve(filename, { paths: [baseDir, process.cwd()] }));
if (typeof classOrModule === "function") {
Object.assign(classOrModule.prototype, {
program,
baseDir,
stdout,
stderr,
log: console.error,
readFile,
writeFile,
listFiles
});
transforms.push(new classOrModule());
} else {
transforms.push(classOrModule); // legacy module
}
} catch (e) {
return callback(e);
}
}
}
function applyTransform(name, ...args) {
for (let i = 0, k = transforms.length; i < k; ++i) {
let transform = transforms[i];
if (typeof transform[name] === "function") {
try {
transform[name](...args);
} catch (e) {
return e;
}
}
}
}
// Parse library files
Object.keys(exports.libraryFiles).forEach(libPath => {
if (libPath.indexOf("/") >= 0) return; // in sub-directory: imported on demand
stats.parseCount++;
stats.parseTime += measure(() => {
assemblyscript.parse(program, exports.libraryFiles[libPath], exports.libraryPrefix + libPath + ".ts", false);
});
});
const customLibDirs = [];
if (args.lib) {
let lib = args.lib;
if (typeof lib === "string") lib = lib.split(",");
Array.prototype.push.apply(customLibDirs, lib.map(lib => lib.trim()));
for (let i = 0, k = customLibDirs.length; i < k; ++i) { // custom
let libDir = customLibDirs[i];
let libFiles;
if (libDir.endsWith(".ts")) {
libFiles = [ path.basename(libDir) ];
libDir = path.dirname(libDir);
} else {
libFiles = listFiles(libDir, baseDir) || [];
}
for (let j = 0, l = libFiles.length; j < l; ++j) {
let libPath = libFiles[j];
let libText = readFile(libPath, libDir);
if (libText === null) return callback(Error("Library file '" + libPath + "' not found."));
stats.parseCount++;
exports.libraryFiles[libPath.replace(/\.ts$/, "")] = libText;
stats.parseTime += measure(() => {
assemblyscript.parse(program, libText, exports.libraryPrefix + libPath, false);
});
}
}
}
args.path = args.path || [];
// Maps package names to parent directory
var packageMains = new Map();
var packageBases = new Map();
// Gets the file matching the specified source path, imported at the given dependee path
function getFile(internalPath, dependeePath) {
var sourceText = null; // text reported back to the compiler
var sourcePath = null; // path reported back to the compiler
const libraryPrefix = exports.libraryPrefix;
const libraryFiles = exports.libraryFiles;
// Try file.ts, file/index.ts, file.d.ts
if (!internalPath.startsWith(libraryPrefix)) {
if ((sourceText = readFile(sourcePath = internalPath + ".ts", baseDir)) == null) {
if ((sourceText = readFile(sourcePath = internalPath + "/index.ts", baseDir)) == null) {
// portable d.ts: uses the .js file next to it in JS or becomes an import in Wasm
sourcePath = internalPath + ".ts";
sourceText = readFile(internalPath + ".d.ts", baseDir);
}
}
// Search library in this order: stdlib, custom lib dirs, paths
} else {
const plainName = internalPath.substring(libraryPrefix.length);
const indexName = plainName + "/index";
if (libraryFiles.hasOwnProperty(plainName)) {
sourceText = libraryFiles[plainName];
sourcePath = libraryPrefix + plainName + ".ts";
} else if (libraryFiles.hasOwnProperty(indexName)) {
sourceText = libraryFiles[indexName];
sourcePath = libraryPrefix + indexName + ".ts";
} else { // custom lib dirs
for (const libDir of customLibDirs) {
if ((sourceText = readFile(plainName + ".ts", libDir)) != null) {
sourcePath = libraryPrefix + plainName + ".ts";
break;
} else {
if ((sourceText = readFile(indexName + ".ts", libDir)) != null) {
sourcePath = libraryPrefix + indexName + ".ts";
break;
}
}
}
if (sourceText == null) { // paths
const match = internalPath.match(/^~lib\/((?:@[^\/]+\/)?[^\/]+)(?:\/(.+))?/); // ~lib/(pkg)/(path), ~lib/(@org/pkg)/(path)
if (match) {
const packageName = match[1];
const isPackageRoot = match[2] === undefined;
const filePath = isPackageRoot ? "index" : match[2];
const basePath = packageBases.has(dependeePath) ? packageBases.get(dependeePath) : ".";
if (args.traceResolution) stderr.write("Looking for package '" + packageName + "' file '" + filePath + "' relative to '" + basePath + "'" + EOL);
const absBasePath = path.isAbsolute(basePath) ? basePath : path.join(baseDir, basePath);
const paths = [];
for (let parts = absBasePath.split(SEP), i = parts.length, k = SEP == "/" ? 0 : 1; i >= k; --i) {
if (parts[i - 1] !== "node_modules") paths.push(parts.slice(0, i).join(SEP) + SEP + "node_modules");
}
for (const currentPath of paths.concat(...args.path).map(p => path.relative(baseDir, p))) {
if (args.traceResolution) stderr.write(" in " + path.join(currentPath, packageName) + EOL);
let mainPath = "assembly";
if (packageMains.has(packageName)) { // use cached
mainPath = packageMains.get(packageName);
} else { // evaluate package.json
let jsonPath = path.join(currentPath, packageName, "package.json");
let jsonText = readFile(jsonPath, baseDir);
if (jsonText != null) {
try {
let json = JSON.parse(jsonText);
if (typeof json.ascMain === "string") {
mainPath = json.ascMain.replace(/[\/\\]index\.ts$/, "");
packageMains.set(packageName, mainPath);
}
} catch (e) { }
}
}
const mainDir = path.join(currentPath, packageName, mainPath);
const plainName = filePath;
if ((sourceText = readFile(path.join(mainDir, plainName + ".ts"), baseDir)) != null) {
sourcePath = libraryPrefix + packageName + "/" + plainName + ".ts";
packageBases.set(sourcePath.replace(/\.ts$/, ""), path.join(currentPath, packageName));
if (args.traceResolution) stderr.write(" -> " + path.join(mainDir, plainName + ".ts") + EOL);
break;
} else if (!isPackageRoot) {
const indexName = filePath + "/index";
if ((sourceText = readFile(path.join(mainDir, indexName + ".ts"), baseDir)) !== null) {
sourcePath = libraryPrefix + packageName + "/" + indexName + ".ts";
packageBases.set(sourcePath.replace(/\.ts$/, ""), path.join(currentPath, packageName));
if (args.traceResolution) stderr.write(" -> " + path.join(mainDir, indexName + ".ts") + EOL);
break;
}
}
}
}
}
}
}
// No such file
if (sourceText == null) return null;
return { sourceText, sourcePath };
}
// Parses the backlog of imported files after including entry files
function parseBacklog() {
var internalPath;
while ((internalPath = assemblyscript.nextFile(program)) != null) {
let file = getFile(internalPath, assemblyscript.getDependee(program, internalPath));
if (!file) return callback(Error("Import '" + internalPath + "' not found."))
stats.parseCount++;
stats.parseTime += measure(() => {
assemblyscript.parse(program, file.sourceText, file.sourcePath, false);
});
}
var numErrors = checkDiagnostics(program, stderr);
if (numErrors) {
return callback(Error(numErrors + " parse error(s)"));
}
}
// Include runtime template before entry files so its setup runs first
{
let runtimeName = String(args.runtime);
let runtimePath = "rt/index-" + runtimeName;
let runtimeText = exports.libraryFiles[runtimePath];
if (runtimeText == null) {
runtimePath = runtimeName;
runtimeText = readFile(runtimePath + ".ts", baseDir);
if (runtimeText == null) return callback(Error("Runtime '" + runtimeName + "' not found."));
} else {
runtimePath = "~lib/" + runtimePath;
}
stats.parseCount++;
stats.parseTime += measure(() => {
assemblyscript.parse(program, runtimeText, runtimePath, true);
});
}
// Include entry files
for (let i = 0, k = argv.length; i < k; ++i) {
const filename = argv[i];
let sourcePath = String(filename).replace(/\\/g, "/").replace(/(\.ts|\/)$/, "");
// Setting the path to relative path
sourcePath = path.isAbsolute(sourcePath) ? path.relative(baseDir, sourcePath) : sourcePath;
// Try entryPath.ts, then entryPath/index.ts
let sourceText = readFile(sourcePath + ".ts", baseDir);
if (sourceText == null) {
sourceText = readFile(sourcePath + "/index.ts", baseDir);
if (sourceText == null) return callback(Error("Entry file '" + sourcePath + ".ts' not found."));
sourcePath += "/index.ts";
} else {
sourcePath += ".ts";
}
stats.parseCount++;
stats.parseTime += measure(() => {
assemblyscript.parse(program, sourceText, sourcePath, true);
});
}
// Parse entry files
{
let code = parseBacklog();
if (code) return code;
}
// Call afterParse transform hook
{
let error = applyTransform("afterParse", program.parser);
if (error) return callback(error);
}
// Parse additional files, if any
{
let code = parseBacklog();
if (code) return code;
}
// Print files and exit if listFiles
if (args.listFiles) {
// FIXME: not a proper C-like API
stderr.write(program.sources.map(s => s.normalizedPath).sort().join(EOL) + EOL);
return callback(null);
}
// Set up optimization levels
var optimizeLevel = 0;
var shrinkLevel = 0;
if (args.optimize) {
optimizeLevel = exports.defaultOptimizeLevel;
shrinkLevel = exports.defaultShrinkLevel;
}
if (typeof args.optimizeLevel === "number") {
optimizeLevel = args.optimizeLevel;
}
if (typeof args.shrinkLevel === "number") {
shrinkLevel = args.shrinkLevel;
}
optimizeLevel = Math.min(Math.max(optimizeLevel, 0), 3);
shrinkLevel = Math.min(Math.max(shrinkLevel, 0), 2);
try {
stats.compileTime += measure(() => {
assemblyscript.initializeProgram(program, compilerOptions);
});
} catch(e) {
return callback(e);
}
// Call afterInitialize transform hook
{
let error = applyTransform("afterInitialize", program);
if (error) return callback(error);
}
var module;
stats.compileCount++;
try {
stats.compileTime += measure(() => {
module = assemblyscript.compile(program);
});
} catch (e) {
return callback(e);
}
var numErrors = checkDiagnostics(program, stderr);
if (numErrors) {
if (module) module.dispose();
return callback(Error(numErrors + " compile error(s)"));
}
// Call afterCompile transform hook
{
let error = applyTransform("afterCompile", module);
if (error) return callback(error);
}
// Validate the module if requested
if (args.validate) {
stats.validateCount++;
stats.validateTime += measure(() => {
if (!module.validate()) {
module.dispose();
return callback(Error("Validate error"));
}
});
}
// Set Binaryen-specific options
if (args.trapMode === "clamp") {
stats.optimizeCount++;
stats.optimizeTime += measure(() => {
module.runPasses([ "trap-mode-clamp" ]);
});
} else if (args.trapMode === "js") {
stats.optimizeCount++;
stats.optimizeTime += measure(() => {
module.runPasses([ "trap-mode-js" ]);
});
} else if (args.trapMode !== "allow") {
module.dispose();
return callback(Error("Unsupported trap mode"));
}
// Implicitly run costly non-LLVM optimizations on -O3 or -Oz
// see: https://github.com/WebAssembly/binaryen/pull/1596
if (optimizeLevel >= 3 || shrinkLevel >= 2) optimizeLevel = 4;
module.setOptimizeLevel(optimizeLevel);
module.setShrinkLevel(shrinkLevel);
module.setDebugInfo(args.debug);
const runPasses = [];
if (args.runPasses) {
if (typeof args.runPasses === "string") {
args.runPasses = args.runPasses.split(",");
}
if (args.runPasses.length) {
args.runPasses.forEach(pass => {
if (runPasses.indexOf(pass = pass.trim()) < 0)
runPasses.push(pass);
});
}
}
function doOptimize() {
const hasARC = args.runtime == "half" || args.runtime == "full";
const passes = [];
function add(pass) { passes.push(pass); }
if (optimizeLevel >= 2 && shrinkLevel === 0) {
// tweak inlining options when speed more preferable than size
module.setAlwaysInlineMaxSize(12);
module.setFlexibleInlineMaxSize(70);
module.setOneCallerInlineMaxSize(200);
} else {
// tweak inlining options when size matters
optimizeLevel === 0 && shrinkLevel >= 0
? module.setAlwaysInlineMaxSize(2)
: module.setAlwaysInlineMaxSize(4); // default: 2
module.setFlexibleInlineMaxSize(65); // default: 20
module.setOneCallerInlineMaxSize(80); // default: 15
}
// Optimize the module if requested
if (optimizeLevel > 0 || shrinkLevel > 0) {
// Binaryen's default passes with Post-AssemblyScript passes added.
// see: Binaryen/src/pass.cpp
// PassRunner::addDefaultGlobalOptimizationPrePasses
add("duplicate-function-elimination");
add("remove-unused-module-elements"); // differs
// PassRunner::addDefaultFunctionOptimizationPasses
if (optimizeLevel >= 3 || shrinkLevel >= 1) {
add("ssa-nomerge");
}
if (optimizeLevel >= 3) {
add("flatten"); // differs
add("simplify-locals-notee-nostructure"); // differs
add("vacuum"); // differs
add("code-folding"); // differs
add("flatten");
add("local-cse");
add("reorder-locals"); // differs
}
if (optimizeLevel >= 2 || shrinkLevel >= 1) { // differs
add("rse");
add("vacuum");
}
if (hasARC) { // differs
if (optimizeLevel < 3) {
add("flatten");
}
add("post-assemblyscript");
}
add("dce");
add("remove-unused-brs");
add("remove-unused-names");
add("optimize-instructions");
add("inlining"); // differs
if (optimizeLevel >= 2 || shrinkLevel >= 1) {
add("pick-load-signs");
add("simplify-globals-optimizing"); // differs
}
if (optimizeLevel >= 3 || shrinkLevel >= 2) {
add("precompute-propagate");
} else {
add("precompute");
}
add("vacuum"); // differs
// this will be done later (1)
// if (optimizeLevel >= 2 || shrinkLevel >= 2) {
// add("code-pushing");
// }
if (optimizeLevel >= 3 && shrinkLevel <= 1) { // differs
add("licm");
}
add("simplify-locals-nostructure");
add("vacuum");
add("reorder-locals");
add("remove-unused-brs");
// if (optimizeLevel >= 3 || shrinkLevel >= 2) { // do it later
// add("merge-locals");
// }
add("coalesce-locals");
add("simplify-locals");
add("vacuum");
add("reorder-locals");
add("coalesce-locals");
add("reorder-locals");
if (optimizeLevel >= 3 || shrinkLevel >= 1) { // differs
add("merge-locals");
}
add("vacuum");
if (optimizeLevel >= 3 || shrinkLevel >= 1) {
add("code-folding");
}
if (optimizeLevel >= 2 || shrinkLevel >= 1) { // differs
add("simplify-globals-optimizing");
}
add("merge-blocks");
add("remove-unused-brs");
add("remove-unused-names");
add("merge-blocks");
// make this later & move to (2)
// if (optimizeLevel >= 3 || shrinkLevel >= 2) {
// add("precompute-propagate");
// } else {
// add("precompute");
// }
if (optimizeLevel >= 3) {
add("optimize-instructions");
}
if (optimizeLevel >= 2 || shrinkLevel >= 1) {
add("rse");
}
add("vacuum");
// PassRunner::addDefaultGlobalOptimizationPostPasses
if (optimizeLevel >= 2 || shrinkLevel >= 1) {
add("simplify-globals-optimizing"); // differs
add("dae-optimizing");
}
if (optimizeLevel >= 2 || shrinkLevel >= 2) {
add("inlining-optimizing");
}
if (module.getLowMemoryUnused()) {
if (optimizeLevel >= 3 || shrinkLevel >= 1) {
add("optimize-added-constants-propagate");
} else {
add("optimize-added-constants");
}
}
// "duplicate-function-elimination" will better done later
// add("duplicate-function-elimination");
add("duplicate-import-elimination");
if (optimizeLevel >= 2 || shrinkLevel >= 2) {
add("simplify-globals-optimizing");
} else {
add("simplify-globals");
add("vacuum"); // differs
}
// moved from (2)
// it works better after globals optimizations like simplify-globals, inlining-optimizing and etc
if (optimizeLevel >= 2 || shrinkLevel >= 1) { // differs
add("precompute-propagate");
} else {
add("precompute");
}
// replace indirect calls with direct, reduce arity and
// inline this calls if possible
add("directize"); // differs
add("dae-optimizing"); // differs
add("inlining-optimizing"); // differs
// ARC finalization should be done exactly after inlining for better release/retain reduction
if (hasARC) { // differs
add("post-assemblyscript-finalize");
}
if (optimizeLevel >= 2 || shrinkLevel >= 1) { // differs
add("rse");
// move some code after early return which potentially could reduce computations
// do this after CFG cleanup (originally it was done before)
// moved from (1)
add("code-pushing");
if (optimizeLevel >= 3) {
// this quite expensive so do this only for highest opt level
add("simplify-globals");
add("vacuum");
// replace indirect calls with direct and inline if possible again.
add("inlining-optimizing");
add("directize");
add("dae-optimizing");
add("precompute-propagate");
add("vacuum");
add("merge-locals");
add("coalesce-locals");
add("simplify-locals-nostructure");
add("vacuum");
add("inlining-optimizing");
add("precompute-propagate");
}
add("remove-unused-brs");
add("remove-unused-names");
add("vacuum");
add("optimize-instructions");
add("simplify-globals-optimizing");
}
// remove unused elements of table and pack / reduce memory
add("duplicate-function-elimination"); // differs
add("remove-unused-nonfunction-module-elements"); // differs
add("memory-packing");
add("remove-unused-module-elements"); // differs
// It seems stack-ir unuseful for our needs.
// if (optimizeLevel >= 3 || shrinkLevel >= 1) { // differs. was optimizeLevel >= 2
// add("generate-stack-ir");
// add("optimize-stack-ir");
// }
}
// Append additional passes if requested and execute
module.runPasses(passes.concat(runPasses));
}
stats.optimizeTime += measure(() => {
stats.optimizeCount++;
doOptimize();
if (args.converge) {
let last = module.toBinary();
do {
stats.optimizeCount++;
doOptimize();
let next = module.toBinary();
if (next.output.length >= last.output.length) {
if (next.output.length > last.output.length) {
stderr.write("Last converge was suboptimial." + EOL);
}
break;
}
last = next;
} while (true);
}
});
// Prepare output
if (!args.noEmit) {
let hasStdout = false;
let hasOutput = false;
if (args.outFile != null) {
if (/\.was?t$/.test(args.outFile) && args.textFile == null) {
args.textFile = args.outFile;
} else if (/\.js$/.test(args.outFile) && args.asmjsFile == null) {
args.asmjsFile = args.outFile;
} else if (args.binaryFile == null) {
args.binaryFile = args.outFile;
}
}
// Write binary
if (args.binaryFile != null) {
let basename = path.basename(args.binaryFile);
let sourceMapURL = args.sourceMap != null
? args.sourceMap.length
? args.sourceMap
: "./" + basename + ".map"
: null;
let wasm;
stats.emitCount++;
stats.emitTime += measure(() => {
wasm = module.toBinary(sourceMapURL);
});
if (args.binaryFile.length) {
writeFile(args.binaryFile, wasm.output, baseDir);
} else {
writeStdout(wasm.output);
hasStdout = true;
}
hasOutput = true;
// Post-process source map
if (wasm.sourceMap != null) {
if (args.binaryFile.length) {
let map = JSON.parse(wasm.sourceMap);
map.sourceRoot = "./" + basename;
let contents = [];
map.sources.forEach((name, index) => {
let text = assemblyscript.getSource(program, name.replace(/\.ts$/, ""));
if (text == null) return callback(Error("Source of file '" + name + "' not found."));
contents[index] = text;
});
map.sourcesContent = contents;
writeFile(path.join(
path.dirname(args.binaryFile),
path.basename(sourceMapURL)
).replace(/^\.\//, ""), JSON.stringify(map), baseDir);
} else {
stderr.write("Skipped source map (stdout already occupied)" + EOL);
}
}
}
// Write asm.js
if (args.asmjsFile != null) {
let asm;
if (args.asmjsFile.length) {
stats.emitCount++;
stats.emitTime += measure(() => {
asm = module.toAsmjs();
});
writeFile(args.asmjsFile, asm, baseDir);
} else if (!hasStdout) {
stats.emitCount++;
stats.emitTime += measure(() => {
asm = module.toAsmjs();
});
writeStdout(asm);
hasStdout = true;
}
hasOutput = true;
}
// Write WebIDL
if (args.idlFile != null) {
let idl;
if (args.idlFile.length) {
stats.emitCount++;
stats.emitTime += measure(() => {
idl = assemblyscript.buildIDL(program);
});
writeFile(args.idlFile, idl, baseDir);
} else if (!hasStdout) {
stats.emitCount++;
stats.emitTime += measure(() => {
idl = assemblyscript.buildIDL(program);
});
writeStdout(idl);
hasStdout = true;
}
hasOutput = true;
}
// Write TypeScript definition
if (args.tsdFile != null) {
let tsd;
if (args.tsdFile.length) {
stats.emitCount++;
stats.emitTime += measure(() => {
tsd = assemblyscript.buildTSD(program);
});
writeFile(args.tsdFile, tsd, baseDir);
} else if (!hasStdout) {
stats.emitCount++;
stats.emitTime += measure(() => {