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llvm-project/flang/tools/bbc/bbc.cpp
Kajetan Puchalski d3d96e2057
[flang][OpenMP] Add -f[no]-openmp-simd (#150269) 
Both clang and gfortran support the -fopenmp-simd flag, which enables
OpenMP support only for simd constructs, while disabling the rest of
OpenMP.

Implement the appropriate parse tree rewriting to remove non-SIMD OpenMP
constructs at the parsing stage.

Add a new SimdOnly flang OpenMP IR pass which rewrites generated OpenMP
FIR to handle untangling composite simd constructs, and clean up OpenMP
operations leftover after the parse tree rewriting stage.
With this approach, the two parts of the logic required to make the flag
work can be self-contained within the parse tree rewriter and the MLIR
pass, respectively. It does not need to be implemented within the core
lowering logic itself.

The flag is expected to have no effect if -fopenmp is passed explicitly,
and is only expected to remove OpenMP constructs, not things like OpenMP
library functions calls. This matches the behaviour of other compilers.

---------

Signed-off-by: Kajetan Puchalski <kajetan.puchalski@arm.com>
2025-08-14 14:20:15 +01:00

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//===- bbc.cpp - Burnside Bridge Compiler -----------------------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// Coding style: https://mlir.llvm.org/getting_started/DeveloperGuide/
//
//===----------------------------------------------------------------------===//
///
/// This is a tool for translating Fortran sources to the FIR dialect of MLIR.
///
//===----------------------------------------------------------------------===//
#include "flang/Frontend/CodeGenOptions.h"
#include "flang/Frontend/TargetOptions.h"
#include "flang/Lower/Bridge.h"
#include "flang/Lower/PFTBuilder.h"
#include "flang/Lower/Support/Verifier.h"
#include "flang/Optimizer/Dialect/Support/FIRContext.h"
#include "flang/Optimizer/Dialect/Support/KindMapping.h"
#include "flang/Optimizer/Support/InitFIR.h"
#include "flang/Optimizer/Support/InternalNames.h"
#include "flang/Optimizer/Support/Utils.h"
#include "flang/Optimizer/Transforms/Passes.h"
#include "flang/Parser/characters.h"
#include "flang/Parser/dump-parse-tree.h"
#include "flang/Parser/message.h"
#include "flang/Parser/parse-tree-visitor.h"
#include "flang/Parser/parse-tree.h"
#include "flang/Parser/parsing.h"
#include "flang/Parser/provenance.h"
#include "flang/Parser/unparse.h"
#include "flang/Semantics/expression.h"
#include "flang/Semantics/runtime-type-info.h"
#include "flang/Semantics/semantics.h"
#include "flang/Semantics/unparse-with-symbols.h"
#include "flang/Support/Fortran-features.h"
#include "flang/Support/LangOptions.h"
#include "flang/Support/OpenMP-features.h"
#include "flang/Support/Version.h"
#include "flang/Support/default-kinds.h"
#include "flang/Tools/CrossToolHelpers.h"
#include "flang/Tools/TargetSetup.h"
#include "flang/Version.inc"
#include "mlir/Dialect/OpenMP/OpenMPDialect.h"
#include "mlir/IR/AsmState.h"
#include "mlir/IR/BuiltinOps.h"
#include "mlir/IR/MLIRContext.h"
#include "mlir/Parser/Parser.h"
#include "mlir/Pass/Pass.h"
#include "mlir/Pass/PassManager.h"
#include "mlir/Pass/PassRegistry.h"
#include "mlir/Transforms/GreedyPatternRewriteDriver.h"
#include "mlir/Transforms/Passes.h"
#include "llvm/MC/TargetRegistry.h"
#include "llvm/Passes/OptimizationLevel.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ErrorOr.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/InitLLVM.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/ToolOutputFile.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/TargetParser/Host.h"
#include "llvm/TargetParser/Triple.h"
#include <memory>
//===----------------------------------------------------------------------===//
// Some basic command-line options
//===----------------------------------------------------------------------===//
static llvm::cl::opt<std::string> inputFilename(llvm::cl::Positional,
llvm::cl::Required,
llvm::cl::desc("<input file>"));
static llvm::cl::opt<std::string>
outputFilename("o", llvm::cl::desc("Specify the output filename"),
llvm::cl::value_desc("filename"));
static llvm::cl::list<std::string>
includeDirs("I", llvm::cl::desc("include module search paths"));
static llvm::cl::alias includeAlias("module-directory",
llvm::cl::desc("module search directory"),
llvm::cl::aliasopt(includeDirs));
static llvm::cl::list<std::string>
intrinsicIncludeDirs("J", llvm::cl::desc("intrinsic module search paths"));
static llvm::cl::alias
intrinsicIncludeAlias("intrinsic-module-directory",
llvm::cl::desc("intrinsic module directory"),
llvm::cl::aliasopt(intrinsicIncludeDirs));
static llvm::cl::opt<std::string>
moduleDir("module", llvm::cl::desc("module output directory (default .)"),
llvm::cl::init("."));
static llvm::cl::opt<std::string>
moduleSuffix("module-suffix", llvm::cl::desc("module file suffix override"),
llvm::cl::init(".mod"));
static llvm::cl::opt<bool>
emitFIR("emit-fir",
llvm::cl::desc("Dump the FIR created by lowering and exit"),
llvm::cl::init(false));
static llvm::cl::opt<bool>
emitHLFIR("emit-hlfir",
llvm::cl::desc("Dump the HLFIR created by lowering and exit"),
llvm::cl::init(false));
static llvm::cl::opt<bool> warnStdViolation("Mstandard",
llvm::cl::desc("emit warnings"),
llvm::cl::init(false));
static llvm::cl::opt<bool> warnIsError("Werror",
llvm::cl::desc("warnings are errors"),
llvm::cl::init(false));
static llvm::cl::opt<bool> dumpSymbols("dump-symbols",
llvm::cl::desc("dump the symbol table"),
llvm::cl::init(false));
static llvm::cl::opt<bool> pftDumpTest(
"pft-test",
llvm::cl::desc("parse the input, create a PFT, dump it, and exit"),
llvm::cl::init(false));
static llvm::cl::opt<bool> enableOpenMP("fopenmp",
llvm::cl::desc("enable openmp"),
llvm::cl::init(false));
static llvm::cl::opt<bool>
enableOpenMPDevice("fopenmp-is-target-device",
llvm::cl::desc("enable openmp device compilation"),
llvm::cl::init(false));
static llvm::cl::opt<std::string> enableDoConcurrentToOpenMPConversion(
"fdo-concurrent-to-openmp",
llvm::cl::desc(
"Try to map `do concurrent` loops to OpenMP [none|host|device]"),
llvm::cl::init("none"));
static llvm::cl::opt<bool>
enableOpenMPGPU("fopenmp-is-gpu",
llvm::cl::desc("enable openmp GPU target codegen"),
llvm::cl::init(false));
static llvm::cl::opt<bool> enableOpenMPForceUSM(
"fopenmp-force-usm",
llvm::cl::desc("force openmp unified shared memory mode"),
llvm::cl::init(false));
static llvm::cl::list<std::string> targetTriplesOpenMP(
"fopenmp-targets",
llvm::cl::desc("comma-separated list of OpenMP offloading triples"),
llvm::cl::CommaSeparated);
// A simplified subset of the OpenMP RTL Flags from Flang, only the primary
// positive options are available, no negative options e.g. fopen_assume* vs
// fno_open_assume*
static llvm::cl::opt<uint32_t>
setOpenMPVersion("fopenmp-version",
llvm::cl::desc("OpenMP standard version"),
llvm::cl::init(31));
static llvm::cl::opt<uint32_t> setOpenMPTargetDebug(
"fopenmp-target-debug",
llvm::cl::desc("Enable debugging in the OpenMP offloading device RTL"),
llvm::cl::init(0));
static llvm::cl::opt<bool> setOpenMPThreadSubscription(
"fopenmp-assume-threads-oversubscription",
llvm::cl::desc("Assume work-shared loops do not have more "
"iterations than participating threads."),
llvm::cl::init(false));
static llvm::cl::opt<bool> setOpenMPTeamSubscription(
"fopenmp-assume-teams-oversubscription",
llvm::cl::desc("Assume distributed loops do not have more iterations than "
"participating teams."),
llvm::cl::init(false));
static llvm::cl::opt<bool> setOpenMPNoThreadState(
"fopenmp-assume-no-thread-state",
llvm::cl::desc(
"Assume that no thread in a parallel region will modify an ICV."),
llvm::cl::init(false));
static llvm::cl::opt<bool> setOpenMPNoNestedParallelism(
"fopenmp-assume-no-nested-parallelism",
llvm::cl::desc("Assume that no thread in a parallel region will encounter "
"a parallel region."),
llvm::cl::init(false));
static llvm::cl::opt<bool>
setNoGPULib("nogpulib",
llvm::cl::desc("Do not link device library for CUDA/HIP device "
"compilation"),
llvm::cl::init(false));
static llvm::cl::opt<bool> enableOpenACC("fopenacc",
llvm::cl::desc("enable openacc"),
llvm::cl::init(false));
static llvm::cl::opt<bool> enableNoPPCNativeVecElemOrder(
"fno-ppc-native-vector-element-order",
llvm::cl::desc("no PowerPC native vector element order."),
llvm::cl::init(false));
static llvm::cl::opt<bool> useHLFIR("hlfir",
llvm::cl::desc("Lower to high level FIR"),
llvm::cl::init(true));
static llvm::cl::opt<bool> enableCUDA("fcuda",
llvm::cl::desc("enable CUDA Fortran"),
llvm::cl::init(false));
static llvm::cl::opt<bool>
enableDoConcurrentOffload("fdoconcurrent-offload",
llvm::cl::desc("enable do concurrent offload"),
llvm::cl::init(false));
static llvm::cl::opt<bool>
disableCUDAWarpFunction("fcuda-disable-warp-function",
llvm::cl::desc("Disable CUDA Warp Function"),
llvm::cl::init(false));
static llvm::cl::opt<std::string>
enableGPUMode("gpu", llvm::cl::desc("Enable GPU Mode managed|unified"),
llvm::cl::init(""));
static llvm::cl::opt<bool> fixedForm("ffixed-form",
llvm::cl::desc("enable fixed form"),
llvm::cl::init(false));
static llvm::cl::opt<std::string>
targetTripleOverride("target",
llvm::cl::desc("Override host target triple"),
llvm::cl::init(""));
static llvm::cl::opt<bool> integerWrapAround(
"fwrapv",
llvm::cl::desc("Treat signed integer overflow as two's complement"),
llvm::cl::init(false));
static llvm::cl::opt<bool> initGlobalZero(
"finit-global-zero",
llvm::cl::desc("Zero initialize globals without default initialization"),
llvm::cl::init(true));
static llvm::cl::opt<bool>
reallocateLHS("frealloc-lhs",
llvm::cl::desc("Follow Fortran 2003 rules for (re)allocating "
"the LHS of the intrinsic assignment"),
llvm::cl::init(true));
static llvm::cl::opt<bool> stackRepackArrays(
"fstack-repack-arrays",
llvm::cl::desc("Allocate temporary arrays for -frepack-arrays "
"in stack memory"),
llvm::cl::init(false));
static llvm::cl::opt<bool>
repackArrays("frepack-arrays",
llvm::cl::desc("Pack non-contiguous assummed shape arrays "
"into contiguous memory"),
llvm::cl::init(false));
static llvm::cl::opt<bool>
repackArraysWhole("frepack-arrays-continuity-whole",
llvm::cl::desc("Repack arrays that are non-contiguous "
"in any dimension. If set to false, "
"only the arrays non-contiguous in the "
"leading dimension will be repacked"),
llvm::cl::init(true));
static llvm::cl::opt<std::string> complexRange(
"complex-range",
llvm::cl::desc("Controls the various implementations for complex "
"multiplication and division [full|improved|basic]"),
llvm::cl::init(""));
#define FLANG_EXCLUDE_CODEGEN
#include "flang/Optimizer/Passes/CommandLineOpts.h"
#include "flang/Optimizer/Passes/Pipelines.h"
//===----------------------------------------------------------------------===//
using ProgramName = std::string;
// Print the module with the "module { ... }" wrapper, preventing
// information loss from attribute information appended to the module
static void printModule(mlir::ModuleOp mlirModule, llvm::raw_ostream &out) {
out << mlirModule << '\n';
}
static void registerAllPasses() {
fir::support::registerMLIRPassesForFortranTools();
fir::registerOptTransformPasses();
}
/// Create a target machine that is at least sufficient to get data-layout
/// information required by flang semantics and lowering. Note that it may not
/// contain all the CPU feature information to get optimized assembly generation
/// from LLVM IR. Drivers that needs to generate assembly from LLVM IR should
/// create a target machine according to their specific options.
static std::unique_ptr<llvm::TargetMachine>
createTargetMachine(llvm::StringRef targetTriple, std::string &error) {
std::string triple{targetTriple};
if (triple.empty())
triple = llvm::sys::getDefaultTargetTriple();
const llvm::Target *theTarget =
llvm::TargetRegistry::lookupTarget(triple, error);
if (!theTarget)
return nullptr;
return std::unique_ptr<llvm::TargetMachine>{
theTarget->createTargetMachine(llvm::Triple(triple), /*CPU=*/"",
/*Features=*/"", llvm::TargetOptions(),
/*Reloc::Model=*/std::nullopt)};
}
/// Build and execute the OpenMPFIRPassPipeline with its own instance
/// of the pass manager, allowing it to be invoked as soon as it's
/// required without impacting the main pass pipeline that may be invoked
/// more than once for verification.
static llvm::LogicalResult runOpenMPPasses(mlir::ModuleOp mlirModule) {
mlir::PassManager pm(mlirModule->getName(),
mlir::OpPassManager::Nesting::Implicit);
using DoConcurrentMappingKind =
Fortran::frontend::CodeGenOptions::DoConcurrentMappingKind;
fir::OpenMPFIRPassPipelineOpts opts;
opts.isTargetDevice = enableOpenMPDevice;
opts.doConcurrentMappingKind =
llvm::StringSwitch<DoConcurrentMappingKind>(
enableDoConcurrentToOpenMPConversion)
.Case("host", DoConcurrentMappingKind::DCMK_Host)
.Case("device", DoConcurrentMappingKind::DCMK_Device)
.Default(DoConcurrentMappingKind::DCMK_None);
fir::createOpenMPFIRPassPipeline(pm, opts);
(void)mlir::applyPassManagerCLOptions(pm);
if (mlir::failed(pm.run(mlirModule))) {
llvm::errs() << "FATAL: failed to correctly apply OpenMP pass pipeline";
return mlir::failure();
}
return mlir::success();
}
//===----------------------------------------------------------------------===//
// Translate Fortran input to FIR, a dialect of MLIR.
//===----------------------------------------------------------------------===//
static llvm::LogicalResult convertFortranSourceToMLIR(
std::string path, Fortran::parser::Options options,
const ProgramName &programPrefix,
Fortran::semantics::SemanticsContext &semanticsContext,
const mlir::PassPipelineCLParser &passPipeline,
const llvm::TargetMachine &targetMachine) {
// prep for prescan and parse
Fortran::parser::Parsing parsing{semanticsContext.allCookedSources()};
parsing.Prescan(path, options);
if (!parsing.messages().empty() && (parsing.messages().AnyFatalError())) {
llvm::errs() << programPrefix << "could not scan " << path << '\n';
parsing.messages().Emit(llvm::errs(), parsing.allCooked());
return mlir::failure();
}
// parse the input Fortran
parsing.Parse(llvm::outs());
if (!parsing.consumedWholeFile()) {
parsing.messages().Emit(llvm::errs(), parsing.allCooked());
parsing.EmitMessage(llvm::errs(), parsing.finalRestingPlace(),
"parser FAIL (final position)",
"error: ", llvm::raw_ostream::RED);
return mlir::failure();
} else if ((!parsing.messages().empty() &&
(parsing.messages().AnyFatalError())) ||
!parsing.parseTree().has_value()) {
parsing.messages().Emit(llvm::errs(), parsing.allCooked());
llvm::errs() << programPrefix << "could not parse " << path << '\n';
return mlir::failure();
} else {
semanticsContext.messages().Annex(std::move(parsing.messages()));
}
// run semantics
auto &parseTree = *parsing.parseTree();
Fortran::semantics::Semantics semantics(semanticsContext, parseTree);
semantics.Perform();
semantics.EmitMessages(llvm::errs());
if (semantics.AnyFatalError()) {
llvm::errs() << programPrefix << "semantic errors in " << path << '\n';
return mlir::failure();
}
Fortran::semantics::RuntimeDerivedTypeTables tables;
if (!semantics.AnyFatalError()) {
tables =
Fortran::semantics::BuildRuntimeDerivedTypeTables(semanticsContext);
if (!tables.schemata)
llvm::errs() << programPrefix
<< "could not find module file for __fortran_type_info\n";
}
if (dumpSymbols) {
semantics.DumpSymbols(llvm::outs());
return mlir::success();
}
if (pftDumpTest) {
if (auto ast = Fortran::lower::createPFT(parseTree, semanticsContext)) {
Fortran::lower::dumpPFT(llvm::outs(), *ast);
return mlir::success();
}
llvm::errs() << "Pre FIR Tree is NULL.\n";
return mlir::failure();
}
// translate to FIR dialect of MLIR
mlir::DialectRegistry registry;
fir::support::registerNonCodegenDialects(registry);
fir::support::addFIRExtensions(registry);
mlir::MLIRContext ctx(registry);
fir::support::loadNonCodegenDialects(ctx);
auto &defKinds = semanticsContext.defaultKinds();
fir::KindMapping kindMap(
&ctx, llvm::ArrayRef<fir::KindTy>{fir::fromDefaultKinds(defKinds)});
std::string targetTriple = targetMachine.getTargetTriple().normalize();
// Use default lowering options for bbc.
Fortran::lower::LoweringOptions loweringOptions{};
loweringOptions.setNoPPCNativeVecElemOrder(enableNoPPCNativeVecElemOrder);
loweringOptions.setLowerToHighLevelFIR(useHLFIR || emitHLFIR);
loweringOptions.setIntegerWrapAround(integerWrapAround);
loweringOptions.setInitGlobalZero(initGlobalZero);
loweringOptions.setReallocateLHS(reallocateLHS);
loweringOptions.setStackRepackArrays(stackRepackArrays);
loweringOptions.setRepackArrays(repackArrays);
loweringOptions.setRepackArraysWhole(repackArraysWhole);
loweringOptions.setSkipExternalRttiDefinition(skipExternalRttiDefinition);
if (enableCUDA)
loweringOptions.setCUDARuntimeCheck(true);
if (complexRange == "improved" || complexRange == "basic")
loweringOptions.setComplexDivisionToRuntime(false);
std::vector<Fortran::lower::EnvironmentDefault> envDefaults = {};
Fortran::frontend::TargetOptions targetOpts;
Fortran::frontend::CodeGenOptions cgOpts;
auto burnside = Fortran::lower::LoweringBridge::create(
ctx, semanticsContext, defKinds, semanticsContext.intrinsics(),
semanticsContext.targetCharacteristics(), parsing.allCooked(),
targetTriple, kindMap, loweringOptions, envDefaults,
semanticsContext.languageFeatures(), targetMachine, targetOpts, cgOpts);
mlir::ModuleOp mlirModule = burnside.getModule();
if (enableOpenMP) {
if (enableOpenMPGPU && !enableOpenMPDevice) {
llvm::errs() << "FATAL: -fopenmp-is-gpu can only be set if "
"-fopenmp-is-target-device is also set";
return mlir::failure();
}
// Construct offloading target triples vector.
std::vector<llvm::Triple> targetTriples;
targetTriples.reserve(targetTriplesOpenMP.size());
for (llvm::StringRef s : targetTriplesOpenMP)
targetTriples.emplace_back(s);
auto offloadModuleOpts = OffloadModuleOpts(
setOpenMPTargetDebug, setOpenMPTeamSubscription,
setOpenMPThreadSubscription, setOpenMPNoThreadState,
setOpenMPNoNestedParallelism, enableOpenMPDevice, enableOpenMPGPU,
enableOpenMPForceUSM, setOpenMPVersion, "", targetTriples, setNoGPULib);
setOffloadModuleInterfaceAttributes(mlirModule, offloadModuleOpts);
setOpenMPVersionAttribute(mlirModule, setOpenMPVersion);
}
burnside.lower(parseTree, semanticsContext);
std::error_code ec;
std::string outputName = outputFilename;
if (!outputName.size())
outputName = llvm::sys::path::stem(inputFilename).str().append(".mlir");
llvm::raw_fd_ostream out(outputName, ec);
if (ec)
return mlir::emitError(mlir::UnknownLoc::get(&ctx),
"could not open output file ")
<< outputName;
// WARNING: This pipeline must be run immediately after the lowering to
// ensure that the FIR is correct with respect to OpenMP operations/
// attributes.
if (enableOpenMP)
if (mlir::failed(runOpenMPPasses(mlirModule)))
return mlir::failure();
// Otherwise run the default passes.
mlir::PassManager pm(mlirModule->getName(),
mlir::OpPassManager::Nesting::Implicit);
pm.enableVerifier(/*verifyPasses=*/true);
(void)mlir::applyPassManagerCLOptions(pm);
if (passPipeline.hasAnyOccurrences()) {
// run the command-line specified pipeline
hlfir::registerHLFIRPasses();
(void)passPipeline.addToPipeline(pm, [&](const llvm::Twine &msg) {
mlir::emitError(mlir::UnknownLoc::get(&ctx)) << msg;
return mlir::failure();
});
} else if (emitFIR || emitHLFIR) {
// --emit-fir: Build the IR, verify it, and dump the IR if the IR passes
// verification. Use --dump-module-on-failure to dump invalid IR.
pm.addPass(std::make_unique<Fortran::lower::VerifierPass>());
if (mlir::failed(pm.run(mlirModule))) {
llvm::errs() << "FATAL: verification of lowering to FIR failed";
return mlir::failure();
}
if (emitFIR && useHLFIR) {
// lower HLFIR to FIR
fir::EnableOpenMP enableOmp =
enableOpenMP ? fir::EnableOpenMP::Full : fir::EnableOpenMP::None;
fir::createHLFIRToFIRPassPipeline(pm, enableOmp,
llvm::OptimizationLevel::O2);
if (mlir::failed(pm.run(mlirModule))) {
llvm::errs() << "FATAL: lowering from HLFIR to FIR failed";
return mlir::failure();
}
}
printModule(mlirModule, out);
return mlir::success();
} else {
// run the default canned pipeline
pm.addPass(std::make_unique<Fortran::lower::VerifierPass>());
// Add O2 optimizer pass pipeline.
MLIRToLLVMPassPipelineConfig config(llvm::OptimizationLevel::O2);
if (enableOpenMP)
config.EnableOpenMP = true;
config.NSWOnLoopVarInc = !integerWrapAround;
fir::registerDefaultInlinerPass(config);
fir::createDefaultFIROptimizerPassPipeline(pm, config);
}
if (mlir::succeeded(pm.run(mlirModule))) {
// Emit MLIR and do not lower to LLVM IR.
printModule(mlirModule, out);
return mlir::success();
}
// Something went wrong. Try to dump the MLIR module.
llvm::errs() << "oops, pass manager reported failure\n";
return mlir::failure();
}
int main(int argc, char **argv) {
[[maybe_unused]] llvm::InitLLVM y(argc, argv);
llvm::InitializeAllTargets();
llvm::InitializeAllTargetMCs();
registerAllPasses();
mlir::registerMLIRContextCLOptions();
mlir::registerAsmPrinterCLOptions();
mlir::registerPassManagerCLOptions();
mlir::PassPipelineCLParser passPipe("", "Compiler passes to run");
llvm::cl::ParseCommandLineOptions(argc, argv, "Burnside Bridge Compiler\n");
ProgramName programPrefix;
programPrefix = argv[0] + ": "s;
if (includeDirs.size() == 0) {
includeDirs.push_back(".");
// Default Fortran modules should be installed in include/flang (a sibling
// to the bin) directory.
intrinsicIncludeDirs.push_back(
llvm::sys::path::parent_path(
llvm::sys::path::parent_path(
llvm::sys::fs::getMainExecutable(argv[0], nullptr)))
.str() +
"/include/flang");
}
Fortran::parser::Options options;
options.predefinitions.emplace_back("__flang__"s, "1"s);
options.predefinitions.emplace_back("__flang_major__"s,
std::string{FLANG_VERSION_MAJOR_STRING});
options.predefinitions.emplace_back("__flang_minor__"s,
std::string{FLANG_VERSION_MINOR_STRING});
options.predefinitions.emplace_back(
"__flang_patchlevel__"s, std::string{FLANG_VERSION_PATCHLEVEL_STRING});
Fortran::common::LangOptions langOpts;
langOpts.NoGPULib = setNoGPULib;
langOpts.OpenMPVersion = setOpenMPVersion;
langOpts.OpenMPIsTargetDevice = enableOpenMPDevice;
langOpts.OpenMPIsGPU = enableOpenMPGPU;
langOpts.OpenMPForceUSM = enableOpenMPForceUSM;
langOpts.OpenMPTargetDebug = setOpenMPTargetDebug;
langOpts.OpenMPThreadSubscription = setOpenMPThreadSubscription;
langOpts.OpenMPTeamSubscription = setOpenMPTeamSubscription;
langOpts.OpenMPNoThreadState = setOpenMPNoThreadState;
langOpts.OpenMPNoNestedParallelism = setOpenMPNoNestedParallelism;
std::transform(targetTriplesOpenMP.begin(), targetTriplesOpenMP.end(),
std::back_inserter(langOpts.OMPTargetTriples),
[](const std::string &str) { return llvm::Triple(str); });
// enable parsing of OpenMP
if (enableOpenMP) {
options.features.Enable(Fortran::common::LanguageFeature::OpenMP);
Fortran::common::setOpenMPMacro(setOpenMPVersion, options.predefinitions);
}
// enable parsing of OpenACC
if (enableOpenACC) {
options.features.Enable(Fortran::common::LanguageFeature::OpenACC);
options.predefinitions.emplace_back("_OPENACC", "202211");
}
// enable parsing of CUDA Fortran
if (enableCUDA) {
options.features.Enable(Fortran::common::LanguageFeature::CUDA);
}
if (enableDoConcurrentOffload) {
options.features.Enable(
Fortran::common::LanguageFeature::DoConcurrentOffload);
}
if (disableCUDAWarpFunction) {
options.features.Enable(
Fortran::common::LanguageFeature::CudaWarpMatchFunction, false);
}
if (enableGPUMode == "managed") {
options.features.Enable(Fortran::common::LanguageFeature::CudaManaged);
} else if (enableGPUMode == "unified") {
options.features.Enable(Fortran::common::LanguageFeature::CudaUnified);
}
if (fixedForm) {
options.isFixedForm = fixedForm;
}
Fortran::common::IntrinsicTypeDefaultKinds defaultKinds;
Fortran::parser::AllSources allSources;
Fortran::parser::AllCookedSources allCookedSources(allSources);
Fortran::semantics::SemanticsContext semanticsContext{
defaultKinds, options.features, langOpts, allCookedSources};
semanticsContext.set_moduleDirectory(moduleDir)
.set_moduleFileSuffix(moduleSuffix)
.set_searchDirectories(includeDirs)
.set_intrinsicModuleDirectories(intrinsicIncludeDirs)
.set_warnOnNonstandardUsage(warnStdViolation)
.set_warningsAreErrors(warnIsError);
std::string error;
// Create host target machine.
std::unique_ptr<llvm::TargetMachine> targetMachine =
createTargetMachine(targetTripleOverride, error);
if (!targetMachine) {
llvm::errs() << "failed to create target machine: " << error << "\n";
return mlir::failed(mlir::failure());
}
std::string compilerVersion = Fortran::common::getFlangToolFullVersion("bbc");
std::string compilerOptions = "";
Fortran::tools::setUpTargetCharacteristics(
semanticsContext.targetCharacteristics(), *targetMachine, {},
compilerVersion, compilerOptions);
return mlir::failed(
convertFortranSourceToMLIR(inputFilename, options, programPrefix,
semanticsContext, passPipe, *targetMachine));
}
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