Files
clang-p2996/mlir/lib/Analysis/OpStats.cpp
Mehdi Amini 308571074c Mass update the MLIR license header to mention "Part of the LLVM project"
This is an artifact from merging MLIR into LLVM, the file headers are
now aligned with the rest of the project.
2020-01-26 03:58:30 +00:00

85 lines
2.7 KiB
C++

//===- OpStats.cpp - Prints stats of operations in module -----------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#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(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;
raw_ostream &os;
};
} // namespace
void PrintOpStatsPass::runOnModule() {
opCount.clear();
// Compute the operation statistics for each function in the module.
for (auto &op : getModule())
op.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");