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/*
* Copyright 2018 WebAssembly Community Group participants
*
* 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.
*/
#include "ir/module-utils.h"
#include "support/command-line.h"
#include "pass.h"
//
// Shared optimization options for commandline tools
//
namespace wasm {
struct ToolOptions : public Options {
PassOptions passOptions;
ToolOptions(const std::string& command, const std::string& description)
: Options(command, description) {
(*this)
.add("--mvp-features", "-mvp", "Disable all non-MVP features",
Arguments::Zero,
[this](Options*, const std::string&) {
hasFeatureOptions = true;
passOptions.features.makeMVP();
enabledFeatures.makeMVP();
disabledFeatures.setAll();
})
.add("--all-features", "-all", "Enable all features "
"(default if there is no target features section"
" or if any feature options are provided)",
Arguments::Zero,
[this](Options*, const std::string&) {
hasFeatureOptions = true;
passOptions.features.setAll();
enabledFeatures.setAll();
disabledFeatures.makeMVP();
})
.add("--detect-features", "",
"Use features from the target features section"
"(default if there is a target features section"
" and no feature options are provided)",
Arguments::Zero,
[this](Options*, const std::string&) {
hasFeatureOptions = true;
detectFeatures = true;
enabledFeatures.makeMVP();
disabledFeatures.makeMVP();
});
(*this)
.addFeature(FeatureSet::SignExt, "sign extension operations")
.addFeature(FeatureSet::Atomics, "atomic operations")
.addFeature(FeatureSet::MutableGlobals, "mutable globals")
.addFeature(FeatureSet::TruncSat, "nontrapping float-to-int operations")
.addFeature(FeatureSet::SIMD, "SIMD operations and types")
.addFeature(FeatureSet::BulkMemory, "bulk memory operations")
.add("--no-validation", "-n",
"Disables validation, assumes inputs are correct",
Options::Arguments::Zero,
[this](Options* o, const std::string& argument) {
passOptions.validate = false;
});
}
ToolOptions& addFeature(FeatureSet::Feature feature,
const std::string& description) {
(*this)
.add(std::string("--enable-") + FeatureSet::toString(feature), "",
std::string("Enable ") + description, Arguments::Zero,
[=](Options*, const std::string&) {
hasFeatureOptions = true;
passOptions.features.set(feature, true);
enabledFeatures.set(feature, true);
disabledFeatures.set(feature, false);
})
.add(std::string("--disable-") + FeatureSet::toString(feature), "",
std::string("Disable ") + description, Arguments::Zero,
[=](Options*, const std::string&) {
hasFeatureOptions = true;
passOptions.features.set(feature, false);
enabledFeatures.set(feature, false);
disabledFeatures.set(feature, true);
});
return *this;
}
void calculateFeatures(const Module& module) {
FeatureSet wasmFeatures;
bool wasmHasFeatures =
ModuleUtils::readFeaturesSection(module, wasmFeatures);
if (hasFeatureOptions) {
if (detectFeatures) {
wasmFeatures.enable(enabledFeatures);
wasmFeatures.disable(disabledFeatures);
passOptions.features = wasmFeatures;
} else if (!(wasmFeatures <= passOptions.features)) {
Fatal() << "module uses features not explicitly specified, "
<< "use --detect-features to resolve";
}
} else if (wasmHasFeatures) {
passOptions.features = wasmFeatures;
}
}
private:
bool hasFeatureOptions = false;
bool detectFeatures = false;
FeatureSet enabledFeatures = FeatureSet::MVP;
FeatureSet disabledFeatures = FeatureSet::MVP;
};
} // namespace wasm
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