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214 lines
8.3 KiB
C++
214 lines
8.3 KiB
C++
//===--- SILLLVMGen.cpp ---------------------------------------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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///
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/// This is a tool for reading sil files and running IRGen passes upon them. It
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/// is not meant to be used to run llvm optimizations on llvm-ir.
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///
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//===----------------------------------------------------------------------===//
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#include "swift/AST/DiagnosticsFrontend.h"
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#include "swift/AST/SILOptions.h"
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#include "swift/Basic/LLVMContext.h"
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#include "swift/Basic/LLVMInitialize.h"
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#include "swift/Frontend/DiagnosticVerifier.h"
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#include "swift/Frontend/Frontend.h"
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#include "swift/Frontend/PrintingDiagnosticConsumer.h"
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#include "swift/IRGen/IRGenPublic.h"
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#include "swift/IRGen/IRGenSILPasses.h"
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#include "swift/SILOptimizer/Analysis/Analysis.h"
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#include "swift/SILOptimizer/PassManager/PassManager.h"
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#include "swift/SILOptimizer/PassManager/Passes.h"
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#include "swift/Serialization/SerializationOptions.h"
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#include "swift/Serialization/SerializedModuleLoader.h"
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#include "swift/Serialization/SerializedSILLoader.h"
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#include "swift/Strings.h"
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#include "swift/Subsystems.h"
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#include "llvm/ADT/Statistic.h"
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#include "llvm/IR/Module.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/Signals.h"
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#include "llvm/Support/TargetSelect.h"
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#include <cstdio>
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using namespace swift;
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static llvm::cl::opt<std::string> InputFilename(llvm::cl::desc("input file"),
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llvm::cl::init("-"),
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llvm::cl::Positional);
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static llvm::cl::opt<std::string>
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OutputFilename("o", llvm::cl::init("-"), llvm::cl::desc("output filename"));
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static llvm::cl::list<std::string>
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ImportPaths("I",
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llvm::cl::desc("add a directory to the import search path"));
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static llvm::cl::list<std::string> FrameworkPaths(
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"F", llvm::cl::desc("add a directory to the framework search path"));
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static llvm::cl::opt<std::string>
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ModuleName("module-name",
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llvm::cl::desc("The name of the module if processing"
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" a module. Necessary for processing "
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"stdin."));
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static llvm::cl::opt<std::string> ResourceDir(
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"resource-dir",
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llvm::cl::desc("The directory that holds the compiler resource files"));
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static llvm::cl::opt<std::string>
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SDKPath("sdk", llvm::cl::desc("The path to the SDK for use with the clang "
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"importer."),
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llvm::cl::init(""));
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static llvm::cl::opt<std::string> Target("target",
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llvm::cl::desc("target triple"));
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static llvm::cl::opt<bool>
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PrintStats("print-stats", llvm::cl::desc("Print various statistics"));
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static llvm::cl::opt<std::string>
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ModuleCachePath("module-cache-path",
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llvm::cl::desc("Clang module cache path"));
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static llvm::cl::opt<bool>
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PerformWMO("wmo", llvm::cl::desc("Enable whole-module optimizations"));
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static llvm::cl::opt<bool> AssumeUnqualifiedOwnershipWhenParsing(
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"assume-parsing-unqualified-ownership-sil", llvm::cl::Hidden,
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llvm::cl::init(false),
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llvm::cl::desc("Assume all parsed functions have unqualified ownership"));
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static llvm::cl::opt<IRGenOutputKind>
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OutputKind("output-kind", llvm::cl::desc("Type of output to produce"),
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llvm::cl::values(clEnumValN(IRGenOutputKind::LLVMAssembly,
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"llvm-as", "Emit llvm assembly"),
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clEnumValN(IRGenOutputKind::LLVMBitcode,
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"llvm-bc", "Emit llvm bitcode"),
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clEnumValN(IRGenOutputKind::NativeAssembly,
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"as", "Emit native assembly"),
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clEnumValN(IRGenOutputKind::ObjectFile,
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"object", "Emit an object file")),
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llvm::cl::init(IRGenOutputKind::ObjectFile));
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// This function isn't referenced outside its translation unit, but it
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// can't use the "static" keyword because its address is used for
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// getMainExecutable (since some platforms don't support taking the
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// address of main, and some platforms can't implement getMainExecutable
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// without being given the address of a function in the main executable).
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void anchorForGetMainExecutable() {}
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int main(int argc, char **argv) {
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INITIALIZE_LLVM(argc, argv);
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llvm::cl::ParseCommandLineOptions(argc, argv, "Swift LLVM IR Generator\n");
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if (PrintStats)
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llvm::EnableStatistics();
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CompilerInvocation Invocation;
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Invocation.setMainExecutablePath(llvm::sys::fs::getMainExecutable(
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argv[0], reinterpret_cast<void *>(&anchorForGetMainExecutable)));
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// Give the context the list of search paths to use for modules.
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Invocation.setImportSearchPaths(ImportPaths);
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std::vector<SearchPathOptions::FrameworkSearchPath> FramePaths;
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for (const auto &path : FrameworkPaths) {
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FramePaths.push_back({path, /*isSystem=*/false});
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}
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Invocation.setFrameworkSearchPaths(FramePaths);
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// Set the SDK path and target if given.
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if (SDKPath.getNumOccurrences() == 0) {
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const char *SDKROOT = getenv("SDKROOT");
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if (SDKROOT)
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SDKPath = SDKROOT;
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}
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if (!SDKPath.empty())
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Invocation.setSDKPath(SDKPath);
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if (!Target.empty())
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Invocation.setTargetTriple(Target);
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if (!ResourceDir.empty())
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Invocation.setRuntimeResourcePath(ResourceDir);
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// Set the module cache path. If not passed in we use the default swift module
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// cache.
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Invocation.getClangImporterOptions().ModuleCachePath = ModuleCachePath;
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Invocation.setParseStdlib();
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// Setup the language options
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auto &LangOpts = Invocation.getLangOptions();
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LangOpts.DisableAvailabilityChecking = true;
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LangOpts.EnableAccessControl = false;
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LangOpts.EnableObjCAttrRequiresFoundation = false;
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LangOpts.EnableObjCInterop = LangOpts.Target.isOSDarwin();
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// Setup the SIL Options.
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SILOptions &SILOpts = Invocation.getSILOptions();
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SILOpts.AssumeUnqualifiedOwnershipWhenParsing =
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AssumeUnqualifiedOwnershipWhenParsing;
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// Setup the IRGen Options.
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IRGenOptions &Opts = Invocation.getIRGenOptions();
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Opts.MainInputFilename = InputFilename;
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Opts.OutputFilenames.push_back(OutputFilename);
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Opts.OutputKind = OutputKind;
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serialization::ExtendedValidationInfo extendedInfo;
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llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> FileBufOrErr =
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Invocation.setUpInputForSILTool(InputFilename, ModuleName,
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/*alwaysSetModuleToMain*/ false,
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/*bePrimary*/ !PerformWMO, extendedInfo);
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if (!FileBufOrErr) {
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fprintf(stderr, "Error! Failed to open file: %s\n", InputFilename.c_str());
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exit(-1);
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}
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CompilerInstance CI;
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PrintingDiagnosticConsumer PrintDiags;
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CI.addDiagnosticConsumer(&PrintDiags);
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if (CI.setup(Invocation))
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return 1;
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CI.performSema();
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// If parsing produced an error, don't run any passes.
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if (CI.getASTContext().hadError())
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return 1;
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// Load the SIL if we have a module. We have to do this after SILParse
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// creating the unfortunate double if statement.
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if (Invocation.hasSerializedAST()) {
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assert(!CI.hasSILModule() &&
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"performSema() should not create a SILModule.");
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CI.setSILModule(SILModule::createEmptyModule(
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CI.getMainModule(), CI.getSILOptions(), PerformWMO));
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std::unique_ptr<SerializedSILLoader> SL = SerializedSILLoader::create(
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CI.getASTContext(), CI.getSILModule(), nullptr);
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if (extendedInfo.isSIB())
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SL->getAllForModule(CI.getMainModule()->getName(), nullptr);
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else
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SL->getAll();
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}
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std::unique_ptr<llvm::Module> Mod = performIRGeneration(
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Opts, CI.getMainModule(), CI.takeSILModule(),
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CI.getMainModule()->getName().str(), getGlobalLLVMContext());
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return CI.getASTContext().hadError();
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}
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