diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/pass.h | 9 | ||||
| -rw-r--r-- | src/passes/ExtractFunction.cpp | 22 | ||||
| -rw-r--r-- | src/tools/optimization-options.h | 11 |
3 files changed, 29 insertions, 13 deletions
diff --git a/src/pass.h b/src/pass.h index 9ef159d7d..6116a9cca 100644 --- a/src/pass.h +++ b/src/pass.h @@ -76,6 +76,8 @@ struct PassOptions { bool debugInfo = false; // Which wasm features to accept, and be allowed to use. FeatureSet features = FeatureSet::All; + // Arbitrary string arguments from the commandline, which we forward to passes. + std::map<std::string, std::string> arguments; void setDefaultOptimizationOptions() { // -Os is our default @@ -92,6 +94,13 @@ struct PassOptions { static PassOptions getWithoutOptimization() { return PassOptions(); // defaults are to not optimize } + + std::string getArgument(std::string key, std::string errorTextIfMissing) { + if (arguments.count(key) == 0) { + Fatal() << errorTextIfMissing; + } + return arguments[key]; + } }; // diff --git a/src/passes/ExtractFunction.cpp b/src/passes/ExtractFunction.cpp index 7259f399d..8a97ced8e 100644 --- a/src/passes/ExtractFunction.cpp +++ b/src/passes/ExtractFunction.cpp @@ -23,22 +23,18 @@ namespace wasm { - struct ExtractFunction : public Pass { void run(PassRunner* runner, Module* module) override { - auto* leave = getenv("BINARYEN_EXTRACT"); - if (!leave) { - std::cerr << "usage: set BINARYEN_EXTRACT in the env\n"; - abort(); - } - Name LEAVE(leave); - std::cerr << "extracting " << LEAVE << "\n"; + Name name = runner->options.getArgument("extract", "ExtractFunction usage: wasm-opt --pass-arg=extract:FUNCTION_NAME"); + std::cerr << "extracting " << name << "\n"; bool found = false; for (auto& func : module->functions) { - if (func->name != LEAVE) { - // wipe out all the contents + if (func->name != name) { + // Turn it into an import. + func->module = "env"; + func->base = func->name; func->vars.clear(); - func->body = module->allocator.alloc<Unreachable>(); + func->body = nullptr; } else { found = true; } @@ -53,8 +49,8 @@ struct ExtractFunction : public Pass { // leave just an export for the thing we want module->exports.clear(); auto* export_ = new Export; - export_->name = LEAVE; - export_->value = LEAVE; + export_->name = name; + export_->value = name; export_->kind = ExternalKind::Function; module->addExport(export_); } diff --git a/src/tools/optimization-options.h b/src/tools/optimization-options.h index 4b8bfc139..dfc61b0e3 100644 --- a/src/tools/optimization-options.h +++ b/src/tools/optimization-options.h @@ -101,6 +101,17 @@ struct OptimizationOptions : public ToolOptions { Options::Arguments::Zero, [this](Options*, const std::string&) { passOptions.lowMemoryUnused = true; + }) + .add("--pass-arg", "-pa", "An argument passed along to optimization passes being run. Must be in the form KEY:VALUE", + Options::Arguments::N, + [this](Options*, const std::string& argument) { + auto colon = argument.find(':'); + if (colon == std::string::npos) { + Fatal() << "--pass-arg value must be in the form of KEY:VALUE"; + } + auto key = argument.substr(0, colon); + auto value = argument.substr(colon + 1); + passOptions.arguments[key] = value; }); // add passes in registry for (const auto& p : PassRegistry::get()->getRegisteredNames()) { |