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//===- OpStats.cpp - Prints stats of operations in module -----------------===//
//
// Copyright 2019 The MLIR 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.
// =============================================================================
#include "mlir/IR/Module.h"
#include "mlir/IR/Operation.h"
#include "mlir/IR/OperationSupport.h"
#include "mlir/Pass/Pass.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/raw_ostream.h"
using namespace mlir;
namespace {
struct PrintOpStatsPass : public ModulePass<PrintOpStatsPass> {
explicit PrintOpStatsPass(llvm::raw_ostream &os = llvm::errs()) : os(os) {}
// Prints the resultant operation statistics post iterating over the module.
void runOnModule() override;
// Print summary of op stats.
void printSummary();
private:
llvm::StringMap<int64_t> opCount;
llvm::raw_ostream &os;
};
} // namespace
void PrintOpStatsPass::runOnModule() {
opCount.clear();
// Compute the operation statistics for each function in the module.
for (auto fn : getModule())
fn.walk([&](Operation *op) { ++opCount[op->getName().getStringRef()]; });
printSummary();
}
void PrintOpStatsPass::printSummary() {
os << "Operations encountered:\n";
os << "-----------------------\n";
SmallVector<StringRef, 64> sorted(opCount.keys());
llvm::sort(sorted);
// Split an operation name from its dialect prefix.
auto splitOperationName = [](StringRef opName) {
auto splitName = opName.split('.');
return splitName.second.empty() ? std::make_pair("", splitName.first)
: splitName;
};
// Compute the largest dialect and operation name.
StringRef dialectName, opName;
size_t maxLenOpName = 0, maxLenDialect = 0;
for (const auto &key : sorted) {
std::tie(dialectName, opName) = splitOperationName(key);
maxLenDialect = std::max(maxLenDialect, dialectName.size());
maxLenOpName = std::max(maxLenOpName, opName.size());
}
for (const auto &key : sorted) {
std::tie(dialectName, opName) = splitOperationName(key);
// Left-align the names (aligning on the dialect) and right-align the count
// below. The alignment is for readability and does not affect CSV/FileCheck
// parsing.
if (dialectName.empty())
os.indent(maxLenDialect + 3);
else
os << llvm::right_justify(dialectName, maxLenDialect + 2) << '.';
// Left justify the operation name.
os << llvm::left_justify(opName, maxLenOpName) << " , " << opCount[key]
<< '\n';
}
}
static PassRegistration<PrintOpStatsPass>
pass("print-op-stats", "Print statistics of operations");
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