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//===- MlirTranslateMain.cpp - MLIR Translation entry point ---------------===//
//
// 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/Tools/mlir-translate/MlirTranslateMain.h"
#include "mlir/IR/AsmState.h"
#include "mlir/IR/BuiltinOps.h"
#include "mlir/IR/Dialect.h"
#include "mlir/IR/Verifier.h"
#include "mlir/Parser/Parser.h"
#include "mlir/Support/FileUtilities.h"
#include "mlir/Support/LogicalResult.h"
#include "mlir/Support/Timing.h"
#include "mlir/Support/ToolUtilities.h"
#include "mlir/Tools/mlir-translate/Translation.h"
#include "llvm/Support/InitLLVM.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/ToolOutputFile.h"
using namespace mlir;
//===----------------------------------------------------------------------===//
// Diagnostic Filter
//===----------------------------------------------------------------------===//
namespace {
/// A scoped diagnostic handler that marks non-error diagnostics as handled. As
/// a result, the main diagnostic handler does not print non-error diagnostics.
class ErrorDiagnosticFilter : public ScopedDiagnosticHandler {
public:
ErrorDiagnosticFilter(MLIRContext *ctx) : ScopedDiagnosticHandler(ctx) {
setHandler([](Diagnostic &diag) {
if (diag.getSeverity() != DiagnosticSeverity::Error)
return success();
return failure();
});
}
};
} // namespace
//===----------------------------------------------------------------------===//
// Translate Entry Point
//===----------------------------------------------------------------------===//
LogicalResult mlir::mlirTranslateMain(int argc, char **argv,
llvm::StringRef toolName) {
static llvm::cl::opt<std::string> inputFilename(
llvm::cl::Positional, llvm::cl::desc("<input file>"),
llvm::cl::init("-"));
static llvm::cl::opt<std::string> outputFilename(
"o", llvm::cl::desc("Output filename"), llvm::cl::value_desc("filename"),
llvm::cl::init("-"));
static llvm::cl::opt<bool> allowUnregisteredDialects(
"allow-unregistered-dialect",
llvm::cl::desc("Allow operation with no registered dialects (discouraged: testing only!)"),
llvm::cl::init(false));
static llvm::cl::opt<bool> splitInputFile(
"split-input-file",
llvm::cl::desc("Split the input file into pieces and "
"process each chunk independently"),
llvm::cl::init(false));
static llvm::cl::opt<bool> verifyDiagnostics(
"verify-diagnostics",
llvm::cl::desc("Check that emitted diagnostics match "
"expected-* lines on the corresponding line"),
llvm::cl::init(false));
static llvm::cl::opt<bool> errorDiagnosticsOnly(
"error-diagnostics-only",
llvm::cl::desc("Filter all non-error diagnostics "
"(discouraged: testing only!)"),
llvm::cl::init(false));
llvm::InitLLVM y(argc, argv);
// Add flags for all the registered translations.
llvm::cl::list<const Translation *, bool, TranslationParser>
translationsRequested("", llvm::cl::desc("Translations to perform"),
llvm::cl::Required);
registerAsmPrinterCLOptions();
registerMLIRContextCLOptions();
registerTranslationCLOptions();
registerDefaultTimingManagerCLOptions();
llvm::cl::ParseCommandLineOptions(argc, argv, toolName);
// Initialize the timing manager.
DefaultTimingManager tm;
applyDefaultTimingManagerCLOptions(tm);
TimingScope timing = tm.getRootScope();
std::string errorMessage;
std::unique_ptr<llvm::MemoryBuffer> input;
if (auto inputAlignment = translationsRequested[0]->getInputAlignment())
input = openInputFile(inputFilename, *inputAlignment, &errorMessage);
else
input = openInputFile(inputFilename, &errorMessage);
if (!input) {
llvm::errs() << errorMessage << "\n";
return failure();
}
auto output = openOutputFile(outputFilename, &errorMessage);
if (!output) {
llvm::errs() << errorMessage << "\n";
return failure();
}
// Processes the memory buffer with a new MLIRContext.
auto processBuffer = [&](std::unique_ptr<llvm::MemoryBuffer> ownedBuffer,
raw_ostream &os) {
// Temporary buffers for chained translation processing.
std::string dataIn;
std::string dataOut;
LogicalResult result = LogicalResult::success();
for (size_t i = 0, e = translationsRequested.size(); i < e; ++i) {
llvm::raw_ostream *stream;
llvm::raw_string_ostream dataStream(dataOut);
if (i == e - 1) {
// Output last translation to output.
stream = &os;
} else {
// Output translation to temporary data buffer.
stream = &dataStream;
}
const Translation *translationRequested = translationsRequested[i];
TimingScope translationTiming =
timing.nest(translationRequested->getDescription());
MLIRContext context;
context.allowUnregisteredDialects(allowUnregisteredDialects);
context.printOpOnDiagnostic(!verifyDiagnostics);
auto sourceMgr = std::make_shared<llvm::SourceMgr>();
sourceMgr->AddNewSourceBuffer(std::move(ownedBuffer), SMLoc());
if (verifyDiagnostics) {
// In the diagnostic verification flow, we ignore whether the
// translation failed (in most cases, it is expected to fail) and we do
// not filter non-error diagnostics even if `errorDiagnosticsOnly` is
// set. Instead, we check if the diagnostics were produced as expected.
SourceMgrDiagnosticVerifierHandler sourceMgrHandler(*sourceMgr,
&context);
(void)(*translationRequested)(sourceMgr, os, &context);
result = sourceMgrHandler.verify();
} else if (errorDiagnosticsOnly) {
SourceMgrDiagnosticHandler sourceMgrHandler(*sourceMgr, &context);
ErrorDiagnosticFilter diagnosticFilter(&context);
result = (*translationRequested)(sourceMgr, *stream, &context);
} else {
SourceMgrDiagnosticHandler sourceMgrHandler(*sourceMgr, &context);
result = (*translationRequested)(sourceMgr, *stream, &context);
}
if (failed(result))
return result;
if (i < e - 1) {
// If there are further translations, create a new buffer with the
// output data.
dataIn = dataOut;
dataOut.clear();
ownedBuffer = llvm::MemoryBuffer::getMemBuffer(dataIn);
}
}
return result;
};
if (failed(splitAndProcessBuffer(std::move(input), processBuffer,
output->os(), splitInputFile)))
return failure();
output->keep();
return success();
}
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