mlir/test/lib/Reducer/MLIRTestReducer.cpp

   1 //===- TestReducer.cpp - Test MLIR Reduce ---------------------------------===//
   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 // This file implements a pass that reproduces errors based on trivially defined
  10 // patterns. It is used as a buggy optimization pass for the purpose of testing
  11 // the MLIR Reduce tool.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "mlir/Pass/Pass.h"
  16
  17 using namespace mlir;
  18
  19 namespace {
  20
  21 /// This pass looks for the presence of an operation with the name
  22 /// "crashOp" in the input MLIR file and crashes the mlir-opt tool if the
  23 /// operation is found.
  24 struct TestReducer : public PassWrapper<TestReducer, OperationPass<>> {
  25   MLIR_DEFINE_EXPLICIT_INTERNAL_INLINE_TYPE_ID(TestReducer)
  26
  27   StringRef getArgument() const final { return "test-mlir-reducer"; }
  28   StringRef getDescription() const final {
  29     return "Tests MLIR Reduce tool by generating failures";
  30   }
  31   void runOnOperation() override;
  32 };
  33
  34 } // namespace
  35
  36 void TestReducer::runOnOperation() {
  37   getOperation()->walk([&](Operation *op) {
  38     StringRef opName = op->getName().getStringRef();
  39
  40     if (opName.contains("op_crash")) {
  41       llvm::errs() << "MLIR Reducer Test generated failure: Found "
  42                       "\"crashOp\" operation\n";
  43       exit(1);
  44     }
  45   });
  46 }
  47
  48 namespace mlir {
  49 void registerTestReducer() { PassRegistration<TestReducer>(); }
  50 } // namespace mlir