1 //===- OpStats.cpp - Prints stats of operations in module -----------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "PassDetail.h"
10 #include "mlir/IR/Module.h"
11 #include "mlir/IR/Operation.h"
12 #include "mlir/IR/OperationSupport.h"
13 #include "mlir/Transforms/Passes.h"
14 #include "llvm/ADT/DenseMap.h"
15 #include "llvm/Support/Format.h"
16 #include "llvm/Support/raw_ostream.h"
17
18 using namespace mlir;
19
20 namespace {
21 struct PrintOpStatsPass : public PrintOpStatsBase<PrintOpStatsPass> {
PrintOpStatsPass__anon7527c16e0111::PrintOpStatsPass22 explicit PrintOpStatsPass(raw_ostream &os = llvm::errs()) : os(os) {}
23
24 // Prints the resultant operation statistics post iterating over the module.
25 void runOnOperation() override;
26
27 // Print summary of op stats.
28 void printSummary();
29
30 private:
31 llvm::StringMap<int64_t> opCount;
32 raw_ostream &os;
33 };
34 } // namespace
35
runOnOperation()36 void PrintOpStatsPass::runOnOperation() {
37 opCount.clear();
38
39 // Compute the operation statistics for the currently visited operation.
40 getOperation()->walk([&](Operation *op) { ++opCount[op->getName().getStringRef()]; });
41 printSummary();
42 }
43
printSummary()44 void PrintOpStatsPass::printSummary() {
45 os << "Operations encountered:\n";
46 os << "-----------------------\n";
47 SmallVector<StringRef, 64> sorted(opCount.keys());
48 llvm::sort(sorted);
49
50 // Split an operation name from its dialect prefix.
51 auto splitOperationName = [](StringRef opName) {
52 auto splitName = opName.split('.');
53 return splitName.second.empty() ? std::make_pair("", splitName.first)
54 : splitName;
55 };
56
57 // Compute the largest dialect and operation name.
58 StringRef dialectName, opName;
59 size_t maxLenOpName = 0, maxLenDialect = 0;
60 for (const auto &key : sorted) {
61 std::tie(dialectName, opName) = splitOperationName(key);
62 maxLenDialect = std::max(maxLenDialect, dialectName.size());
63 maxLenOpName = std::max(maxLenOpName, opName.size());
64 }
65
66 for (const auto &key : sorted) {
67 std::tie(dialectName, opName) = splitOperationName(key);
68
69 // Left-align the names (aligning on the dialect) and right-align the count
70 // below. The alignment is for readability and does not affect CSV/FileCheck
71 // parsing.
72 if (dialectName.empty())
73 os.indent(maxLenDialect + 3);
74 else
75 os << llvm::right_justify(dialectName, maxLenDialect + 2) << '.';
76
77 // Left justify the operation name.
78 os << llvm::left_justify(opName, maxLenOpName) << " , " << opCount[key]
79 << '\n';
80 }
81 }
82
createPrintOpStatsPass()83 std::unique_ptr<Pass> mlir::createPrintOpStatsPass() {
84 return std::make_unique<PrintOpStatsPass>();
85 }
86