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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 <algorithm>
#include <iomanip>
#include <pass.h>
#include <wasm.h>
namespace wasm {
using namespace std;
// Prints metrics between optimization passes.
struct Metrics : public WalkerPass<PostWalker<Metrics, UnifiedExpressionVisitor<Metrics>>> {
static Metrics *lastMetricsPass;
map<const char *, int> counts;
void visitExpression(Expression* curr) {
auto name = getExpressionName(curr);
counts[name]++;
}
void finalize(PassRunner *runner, Module *module) override {
ostream &o = cout;
o << "Counts"
<< "\n";
vector<const char*> keys;
int total = 0;
for (auto i : counts) {
keys.push_back(i.first);
total += i.second;
}
sort(keys.begin(), keys.end(), [](const char* a, const char* b) -> bool {
return strcmp(b, a) > 0;
});
for (auto* key : keys) {
auto value = counts[key];
o << " " << left << setw(15) << key << ": " << setw(8)
<< value;
if (lastMetricsPass) {
if (lastMetricsPass->counts.count(key)) {
int before = lastMetricsPass->counts[key];
int after = value;
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";
}
o << left << setw(16) << "Total" << ": " << setw(8) << total << '\n';
lastMetricsPass = this;
}
};
Metrics *Metrics::lastMetricsPass;
static RegisterPass<Metrics> registerPass("metrics", "reports metrics");
} // namespace wasm
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