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1 //===- OpStats.cpp - Prints stats of operations in module -----------------===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8
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173
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9 #include "PassDetail.h"
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150
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10 #include "mlir/IR/Module.h"
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11 #include "mlir/IR/Operation.h"
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12 #include "mlir/IR/OperationSupport.h"
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13 #include "mlir/Transforms/Passes.h"
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14 #include "llvm/ADT/DenseMap.h"
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15 #include "llvm/Support/Format.h"
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16 #include "llvm/Support/raw_ostream.h"
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17
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18 using namespace mlir;
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19
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20 namespace {
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173
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21 struct PrintOpStatsPass : public PrintOpStatsBase<PrintOpStatsPass> {
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150
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22 explicit PrintOpStatsPass(raw_ostream &os = llvm::errs()) : os(os) {}
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23
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24 // Prints the resultant operation statistics post iterating over the module.
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173
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25 void runOnOperation() override;
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26
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27 // Print summary of op stats.
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28 void printSummary();
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29
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30 private:
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31 llvm::StringMap<int64_t> opCount;
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32 raw_ostream &os;
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33 };
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34 } // namespace
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35
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173
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36 void PrintOpStatsPass::runOnOperation() {
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37 opCount.clear();
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38
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39 // Compute the operation statistics for each function in the module.
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40 for (auto &op : getOperation())
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41 op.walk([&](Operation *op) { ++opCount[op->getName().getStringRef()]; });
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42 printSummary();
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43 }
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44
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45 void PrintOpStatsPass::printSummary() {
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46 os << "Operations encountered:\n";
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47 os << "-----------------------\n";
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48 SmallVector<StringRef, 64> sorted(opCount.keys());
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49 llvm::sort(sorted);
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50
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51 // Split an operation name from its dialect prefix.
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52 auto splitOperationName = [](StringRef opName) {
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53 auto splitName = opName.split('.');
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54 return splitName.second.empty() ? std::make_pair("", splitName.first)
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55 : splitName;
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56 };
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57
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58 // Compute the largest dialect and operation name.
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59 StringRef dialectName, opName;
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60 size_t maxLenOpName = 0, maxLenDialect = 0;
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61 for (const auto &key : sorted) {
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62 std::tie(dialectName, opName) = splitOperationName(key);
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63 maxLenDialect = std::max(maxLenDialect, dialectName.size());
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64 maxLenOpName = std::max(maxLenOpName, opName.size());
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65 }
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66
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67 for (const auto &key : sorted) {
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68 std::tie(dialectName, opName) = splitOperationName(key);
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69
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70 // Left-align the names (aligning on the dialect) and right-align the count
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71 // below. The alignment is for readability and does not affect CSV/FileCheck
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72 // parsing.
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73 if (dialectName.empty())
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74 os.indent(maxLenDialect + 3);
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75 else
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76 os << llvm::right_justify(dialectName, maxLenDialect + 2) << '.';
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77
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78 // Left justify the operation name.
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79 os << llvm::left_justify(opName, maxLenOpName) << " , " << opCount[key]
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80 << '\n';
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81 }
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82 }
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83
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84 std::unique_ptr<OperationPass<ModuleOp>> mlir::createPrintOpStatsPass() {
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85 return std::make_unique<PrintOpStatsPass>();
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86 }
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