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/*
* Copyright 2016 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 <iomanip>
#include <pass.h>
#include <wasm.h>
namespace wasm {
using namespace std;
// Prints metrics between optimization passes.
struct Metrics : public WalkerPass<WasmWalker<Metrics>> {
static Metrics *lastMetricsPass;
map<const char *, int> counts;
void walk(Expression *&curr) override {
WalkerPass::walk(curr);
if (!curr)
return;
auto name = getExpressionName(curr);
counts[name]++;
}
void finalize(PassRunner *runner, Module *module) override {
ostream &o = cout;
o << "Counts"
<< "\n";
for (auto i = counts.cbegin(); i != counts.cend(); i++) {
o << " " << left << setw(15) << i->first << ": " << setw(8)
<< i->second;
if (lastMetricsPass) {
if (lastMetricsPass->counts.count(i->first)) {
int before = lastMetricsPass->counts[i->first];
int after = i->second;
if (after - before) {
if (after > before) {
Colors::red(o);
} else {
Colors::green(o);
}
o << right << setw(8);
o << showpos << after - before << noshowpos;
Colors::normal(o);
}
}
}
o << "\n";
}
lastMetricsPass = this;
}
};
Metrics *Metrics::lastMetricsPass;
static RegisterPass<Metrics> registerPass("metrics", "reports metrics");
} // namespace wasm
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