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137 lines
4.4 KiB
137 lines
4.4 KiB
//===- mlir-reduce.cpp - The MLIR reducer ---------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the general framework of the MLIR reducer tool. It
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// parses the command line arguments, parses the initial MLIR test case and sets
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// up the testing environment. It outputs the most reduced test case variant
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// after executing the reduction passes.
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//
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//===----------------------------------------------------------------------===//
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#include <vector>
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#include "mlir/InitAllDialects.h"
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#include "mlir/Parser.h"
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#include "mlir/Pass/Pass.h"
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#include "mlir/Pass/PassManager.h"
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#include "mlir/Reducer/OptReductionPass.h"
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#include "mlir/Reducer/Passes/OpReducer.h"
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#include "mlir/Reducer/ReductionNode.h"
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#include "mlir/Reducer/ReductionTreePass.h"
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#include "mlir/Reducer/Tester.h"
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#include "mlir/Support/FileUtilities.h"
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#include "mlir/Support/LogicalResult.h"
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#include "mlir/Transforms/Passes.h"
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#include "llvm/Support/InitLLVM.h"
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#include "llvm/Support/ToolOutputFile.h"
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using namespace mlir;
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namespace mlir {
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namespace test {
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void registerTestDialect(DialectRegistry &);
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} // namespace test
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} // namespace mlir
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static llvm::cl::opt<std::string> inputFilename(llvm::cl::Positional,
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llvm::cl::Required,
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llvm::cl::desc("<input file>"));
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static llvm::cl::opt<std::string>
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testFilename("test", llvm::cl::Required, llvm::cl::desc("Testing script"));
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static llvm::cl::list<std::string>
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testArguments("test-args", llvm::cl::ZeroOrMore,
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llvm::cl::desc("Testing script arguments"));
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static llvm::cl::opt<std::string>
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outputFilename("o",
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llvm::cl::desc("Output filename for the reduced test case"),
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llvm::cl::init("-"));
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// TODO: Use PassPipelineCLParser to define pass pieplines in the command line.
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static llvm::cl::opt<std::string>
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passTestSpecifier("pass-test",
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llvm::cl::desc("Indicate a specific pass to be tested"));
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// Parse and verify the input MLIR file.
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static LogicalResult loadModule(MLIRContext &context, OwningModuleRef &module,
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StringRef inputFilename) {
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module = parseSourceFile(inputFilename, &context);
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if (!module)
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return failure();
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return success();
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}
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int main(int argc, char **argv) {
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llvm::InitLLVM y(argc, argv);
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registerMLIRContextCLOptions();
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registerPassManagerCLOptions();
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llvm::cl::ParseCommandLineOptions(argc, argv,
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"MLIR test case reduction tool.\n");
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std::string errorMessage;
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auto testscript = openInputFile(testFilename, &errorMessage);
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if (!testscript)
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llvm::report_fatal_error(errorMessage);
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auto output = openOutputFile(outputFilename, &errorMessage);
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if (!output)
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llvm::report_fatal_error(errorMessage);
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mlir::MLIRContext context;
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registerAllDialects(context.getDialectRegistry());
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#ifdef MLIR_INCLUDE_TESTS
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mlir::test::registerTestDialect(context.getDialectRegistry());
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#endif
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mlir::OwningModuleRef moduleRef;
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if (failed(loadModule(context, moduleRef, inputFilename)))
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llvm::report_fatal_error("Input test case can't be parsed");
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// Initialize test environment.
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const Tester test(testFilename, testArguments);
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if (!test.isInteresting(inputFilename))
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llvm::report_fatal_error(
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"Input test case does not exhibit interesting behavior");
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// Reduction pass pipeline.
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PassManager pm(&context);
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if (passTestSpecifier == "DCE") {
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// Opt Reduction Pass with SymbolDCEPass as opt pass.
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pm.addPass(std::make_unique<OptReductionPass>(test, &context,
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createSymbolDCEPass()));
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} else if (passTestSpecifier == "function-reducer") {
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// Reduction tree pass with OpReducer variant generation and single path
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// traversal.
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pm.addPass(
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std::make_unique<ReductionTreePass<OpReducer<FuncOp>, SinglePath>>(
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test));
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}
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ModuleOp m = moduleRef.get().clone();
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if (failed(pm.run(m)))
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llvm::report_fatal_error("Error running the reduction pass pipeline");
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m.print(output->os());
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output->keep();
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return 0;
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}
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