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CompilerInvocation.cpp
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//===--- CompilerInvocation.cpp - CompilerInvocation methods --------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2020 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
#include "swift/Frontend/Frontend.h"
#include "ArgsToFrontendOptionsConverter.h"
#include "swift/AST/DiagnosticsFrontend.h"
#include "swift/Basic/Platform.h"
#include "swift/Option/Options.h"
#include "swift/Option/SanitizerOptions.h"
#include "swift/Strings.h"
#include "swift/SymbolGraphGen/SymbolGraphOptions.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Option/Arg.h"
#include "llvm/Option/ArgList.h"
#include "llvm/Option/Option.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/LineIterator.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/Process.h"
#include "llvm/Support/WithColor.h"
using namespace swift;
using namespace llvm::opt;
/// The path for Swift libraries in the OS on Darwin.
#define DARWIN_OS_LIBRARY_PATH "/usr/lib/swift"
static constexpr const char *const localeCodes[] = {
#define SUPPORTED_LOCALE(Code, Language) #Code,
#include "swift/AST/LocalizationLanguages.def"
};
swift::CompilerInvocation::CompilerInvocation() {
setTargetTriple(llvm::sys::getDefaultTargetTriple());
}
void CompilerInvocation::computeRuntimeResourcePathFromExecutablePath(
StringRef mainExecutablePath, bool shared,
llvm::SmallVectorImpl<char> &runtimeResourcePath) {
runtimeResourcePath.append(mainExecutablePath.begin(),
mainExecutablePath.end());
llvm::sys::path::remove_filename(runtimeResourcePath); // Remove /swift
llvm::sys::path::remove_filename(runtimeResourcePath); // Remove /bin
appendSwiftLibDir(runtimeResourcePath, shared);
}
void CompilerInvocation::appendSwiftLibDir(llvm::SmallVectorImpl<char> &path,
bool shared) {
llvm::sys::path::append(path, "lib", shared ? "swift" : "swift_static");
}
void CompilerInvocation::setMainExecutablePath(StringRef Path) {
FrontendOpts.MainExecutablePath = Path.str();
llvm::SmallString<128> LibPath;
computeRuntimeResourcePathFromExecutablePath(
Path, FrontendOpts.UseSharedResourceFolder, LibPath);
setRuntimeResourcePath(LibPath.str());
llvm::SmallString<128> clangPath(Path);
llvm::sys::path::remove_filename(clangPath);
llvm::sys::path::append(clangPath, "clang");
ClangImporterOpts.clangPath = std::string(clangPath);
llvm::SmallString<128> DiagnosticDocsPath(Path);
llvm::sys::path::remove_filename(DiagnosticDocsPath); // Remove /swift
llvm::sys::path::remove_filename(DiagnosticDocsPath); // Remove /bin
llvm::sys::path::append(DiagnosticDocsPath, "share", "doc", "swift",
"diagnostics");
DiagnosticOpts.DiagnosticDocumentationPath = std::string(DiagnosticDocsPath.str());
// Compute the path to the diagnostic translations in the toolchain/build.
llvm::SmallString<128> DiagnosticMessagesDir(Path);
llvm::sys::path::remove_filename(DiagnosticMessagesDir); // Remove /swift
llvm::sys::path::remove_filename(DiagnosticMessagesDir); // Remove /bin
llvm::sys::path::append(DiagnosticMessagesDir, "share", "swift", "diagnostics");
DiagnosticOpts.LocalizationPath = std::string(DiagnosticMessagesDir.str());
}
static std::string
getVersionedPrebuiltModulePath(Optional<llvm::VersionTuple> sdkVer,
StringRef defaultPrebuiltPath) {
if (!sdkVer.hasValue())
return defaultPrebuiltPath.str();
std::string versionStr = sdkVer->getAsString();
StringRef vs = versionStr;
do {
SmallString<64> pathWithSDKVer = defaultPrebuiltPath;
llvm::sys::path::append(pathWithSDKVer, vs);
if (llvm::sys::fs::exists(pathWithSDKVer)) {
return pathWithSDKVer.str().str();
} else if (vs.endswith(".0")) {
vs = vs.substr(0, vs.size() - 2);
} else {
return defaultPrebuiltPath.str();
}
} while(true);
}
std::string CompilerInvocation::computePrebuiltCachePath(
StringRef RuntimeResourcePath, llvm::Triple target,
Optional<llvm::VersionTuple> sdkVer) {
SmallString<64> defaultPrebuiltPath{RuntimeResourcePath};
StringRef platform;
if (tripleIsMacCatalystEnvironment(target)) {
// The prebuilt cache for macCatalyst is the same as the one for macOS, not
// iOS or a separate location of its own.
platform = "macosx";
} else {
platform = getPlatformNameForTriple(target);
}
llvm::sys::path::append(defaultPrebuiltPath, platform, "prebuilt-modules");
// If the SDK version is given, we should check if SDK-versioned prebuilt
// module cache is available and use it if so.
return getVersionedPrebuiltModulePath(sdkVer, defaultPrebuiltPath);
}
void CompilerInvocation::setDefaultPrebuiltCacheIfNecessary() {
if (!FrontendOpts.PrebuiltModuleCachePath.empty())
return;
if (SearchPathOpts.RuntimeResourcePath.empty())
return;
FrontendOpts.PrebuiltModuleCachePath = computePrebuiltCachePath(
SearchPathOpts.RuntimeResourcePath, LangOpts.Target, LangOpts.SDKVersion);
if (!FrontendOpts.PrebuiltModuleCachePath.empty())
return;
StringRef anchor = "prebuilt-modules";
assert(((StringRef)FrontendOpts.PrebuiltModuleCachePath).contains(anchor));
auto pair = ((StringRef)FrontendOpts.PrebuiltModuleCachePath).split(anchor);
FrontendOpts.BackupModuleInterfaceDir =
(llvm::Twine(pair.first) + "preferred-interfaces" + pair.second).str();
}
static void updateRuntimeLibraryPaths(SearchPathOptions &SearchPathOpts,
llvm::Triple &Triple) {
llvm::SmallString<128> LibPath(SearchPathOpts.RuntimeResourcePath);
StringRef LibSubDir = getPlatformNameForTriple(Triple);
if (tripleIsMacCatalystEnvironment(Triple))
LibSubDir = "maccatalyst";
llvm::sys::path::append(LibPath, LibSubDir);
SearchPathOpts.RuntimeLibraryPaths.clear();
SearchPathOpts.RuntimeLibraryPaths.push_back(std::string(LibPath.str()));
if (Triple.isOSDarwin())
SearchPathOpts.RuntimeLibraryPaths.push_back(DARWIN_OS_LIBRARY_PATH);
// Set up the import paths containing the swiftmodules for the libraries in
// RuntimeLibraryPath.
SearchPathOpts.RuntimeLibraryImportPaths.clear();
// If this is set, we don't want any runtime import paths.
if (SearchPathOpts.SkipRuntimeLibraryImportPaths)
return;
SearchPathOpts.RuntimeLibraryImportPaths.push_back(std::string(LibPath.str()));
// This is compatibility for <=5.3
if (!Triple.isOSDarwin()) {
llvm::sys::path::append(LibPath, swift::getMajorArchitectureName(Triple));
SearchPathOpts.RuntimeLibraryImportPaths.push_back(std::string(LibPath.str()));
}
if (!SearchPathOpts.SDKPath.empty()) {
if (tripleIsMacCatalystEnvironment(Triple)) {
LibPath = SearchPathOpts.SDKPath;
llvm::sys::path::append(LibPath, "System", "iOSSupport");
llvm::sys::path::append(LibPath, "usr", "lib", "swift");
SearchPathOpts.RuntimeLibraryImportPaths.push_back(std::string(LibPath.str()));
}
LibPath = SearchPathOpts.SDKPath;
llvm::sys::path::append(LibPath, "usr", "lib", "swift");
if (!Triple.isOSDarwin()) {
llvm::sys::path::append(LibPath, getPlatformNameForTriple(Triple));
llvm::sys::path::append(LibPath, swift::getMajorArchitectureName(Triple));
}
SearchPathOpts.RuntimeLibraryImportPaths.push_back(std::string(LibPath.str()));
}
}
static void
setIRGenOutputOptsFromFrontendOptions(IRGenOptions &IRGenOpts,
const FrontendOptions &FrontendOpts) {
// Set the OutputKind for the given Action.
IRGenOpts.OutputKind = [](FrontendOptions::ActionType Action) {
switch (Action) {
case FrontendOptions::ActionType::EmitIRGen:
return IRGenOutputKind::LLVMAssemblyBeforeOptimization;
case FrontendOptions::ActionType::EmitIR:
return IRGenOutputKind::LLVMAssemblyAfterOptimization;
case FrontendOptions::ActionType::EmitBC:
return IRGenOutputKind::LLVMBitcode;
case FrontendOptions::ActionType::EmitAssembly:
return IRGenOutputKind::NativeAssembly;
case FrontendOptions::ActionType::Immediate:
return IRGenOutputKind::Module;
case FrontendOptions::ActionType::EmitObject:
default:
// Just fall back to emitting an object file. If we aren't going to run
// IRGen, it doesn't really matter what we put here anyways.
return IRGenOutputKind::ObjectFile;
}
}(FrontendOpts.RequestedAction);
// If we're in JIT mode, set the requisite flags.
if (FrontendOpts.RequestedAction == FrontendOptions::ActionType::Immediate) {
IRGenOpts.UseJIT = true;
IRGenOpts.DebugInfoLevel = IRGenDebugInfoLevel::Normal;
IRGenOpts.DebugInfoFormat = IRGenDebugInfoFormat::DWARF;
}
}
static void
setBridgingHeaderFromFrontendOptions(ClangImporterOptions &ImporterOpts,
const FrontendOptions &FrontendOpts) {
if (FrontendOpts.RequestedAction != FrontendOptions::ActionType::EmitPCH)
return;
// If there aren't any inputs, there's nothing to do.
if (!FrontendOpts.InputsAndOutputs.hasInputs())
return;
// If we aren't asked to output a bridging header, we don't need to set this.
if (ImporterOpts.PrecompiledHeaderOutputDir.empty())
return;
ImporterOpts.BridgingHeader =
FrontendOpts.InputsAndOutputs.getFilenameOfFirstInput();
}
void CompilerInvocation::setRuntimeResourcePath(StringRef Path) {
SearchPathOpts.RuntimeResourcePath = Path.str();
updateRuntimeLibraryPaths(SearchPathOpts, LangOpts.Target);
}
void CompilerInvocation::setTargetTriple(StringRef Triple) {
setTargetTriple(llvm::Triple(Triple));
}
void CompilerInvocation::setTargetTriple(const llvm::Triple &Triple) {
LangOpts.setTarget(Triple);
updateRuntimeLibraryPaths(SearchPathOpts, LangOpts.Target);
}
void CompilerInvocation::setSDKPath(const std::string &Path) {
SearchPathOpts.SDKPath = Path;
updateRuntimeLibraryPaths(SearchPathOpts, LangOpts.Target);
}
static bool ParseFrontendArgs(
FrontendOptions &opts, ArgList &args, DiagnosticEngine &diags,
SmallVectorImpl<std::unique_ptr<llvm::MemoryBuffer>> *buffers) {
ArgsToFrontendOptionsConverter converter(diags, args, opts);
return converter.convert(buffers);
}
static void diagnoseSwiftVersion(Optional<version::Version> &vers, Arg *verArg,
ArgList &Args, DiagnosticEngine &diags) {
// General invalid version error
diags.diagnose(SourceLoc(), diag::error_invalid_arg_value,
verArg->getAsString(Args), verArg->getValue());
// Note valid versions.
auto validVers = version::Version::getValidEffectiveVersions();
auto versStr = "'" + llvm::join(validVers, "', '") + "'";
diags.diagnose(SourceLoc(), diag::note_valid_swift_versions, versStr);
}
/// Create a new Regex instance out of the string value in \p RpassArg.
/// It returns a pointer to the newly generated Regex instance.
static std::shared_ptr<llvm::Regex>
generateOptimizationRemarkRegex(DiagnosticEngine &Diags, ArgList &Args,
Arg *RpassArg) {
StringRef Val = RpassArg->getValue();
std::string RegexError;
std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val);
if (!Pattern->isValid(RegexError)) {
Diags.diagnose(SourceLoc(), diag::error_optimization_remark_pattern,
RegexError, RpassArg->getAsString(Args));
Pattern.reset();
}
return Pattern;
}
// Lifted from the clang driver.
static void PrintArg(raw_ostream &OS, const char *Arg, StringRef TempDir) {
const bool Escape = std::strpbrk(Arg, "\"\\$ ");
if (!TempDir.empty()) {
llvm::SmallString<256> ArgPath{Arg};
llvm::sys::fs::make_absolute(ArgPath);
llvm::sys::path::native(ArgPath);
llvm::SmallString<256> TempPath{TempDir};
llvm::sys::fs::make_absolute(TempPath);
llvm::sys::path::native(TempPath);
if (StringRef(ArgPath).startswith(TempPath)) {
// Don't write temporary file names in the debug info. This would prevent
// incremental llvm compilation because we would generate different IR on
// every compiler invocation.
Arg = "<temporary-file>";
}
}
if (!Escape) {
OS << Arg;
return;
}
// Quote and escape. This isn't really complete, but good enough.
OS << '"';
while (const char c = *Arg++) {
if (c == '"' || c == '\\' || c == '$')
OS << '\\';
OS << c;
}
OS << '"';
}
static void ParseModuleInterfaceArgs(ModuleInterfaceOptions &Opts,
ArgList &Args) {
using namespace options;
Opts.PreserveTypesAsWritten |=
Args.hasArg(OPT_module_interface_preserve_types_as_written);
Opts.PrintFullConvention |=
Args.hasArg(OPT_experimental_print_full_convention);
Opts.ExperimentalSPIImports |=
Args.hasArg(OPT_experimental_spi_imports);
Opts.DebugPrintInvalidSyntax |=
Args.hasArg(OPT_debug_emit_invalid_swiftinterface_syntax);
if (const Arg *A = Args.getLastArg(OPT_library_level)) {
StringRef contents = A->getValue();
if (contents == "spi") {
Opts.PrintSPIs = true;
}
}
}
/// Save a copy of any flags marked as ModuleInterfaceOption, if running
/// in a mode that is going to emit a .swiftinterface file.
static void SaveModuleInterfaceArgs(ModuleInterfaceOptions &Opts,
FrontendOptions &FOpts,
ArgList &Args, DiagnosticEngine &Diags) {
if (!FOpts.InputsAndOutputs.hasModuleInterfaceOutputPath())
return;
ArgStringList RenderedArgs;
ArgStringList RenderedArgsIgnorable;
for (auto A : Args) {
if (A->getOption().hasFlag(options::ModuleInterfaceOptionIgnorable)) {
A->render(Args, RenderedArgsIgnorable);
} else if (A->getOption().hasFlag(options::ModuleInterfaceOption)) {
A->render(Args, RenderedArgs);
}
}
{
llvm::raw_string_ostream OS(Opts.Flags);
interleave(RenderedArgs,
[&](const char *Argument) { PrintArg(OS, Argument, StringRef()); },
[&] { OS << " "; });
// Backward-compatibility hack: disable availability checking in the
// _Concurrency module, so that older (Swift 5.5) compilers that did not
// support back deployment of concurrency do not complain about 'async'
// with older availability.
if (FOpts.ModuleName == "_Concurrency")
OS << " -disable-availability-checking";
}
{
llvm::raw_string_ostream OS(Opts.IgnorableFlags);
interleave(RenderedArgsIgnorable,
[&](const char *Argument) { PrintArg(OS, Argument, StringRef()); },
[&] { OS << " "; });
}
}
static bool ParseLangArgs(LangOptions &Opts, ArgList &Args,
DiagnosticEngine &Diags,
const FrontendOptions &FrontendOpts) {
using namespace options;
bool HadError = false;
if (auto A = Args.getLastArg(OPT_swift_version)) {
auto vers = version::Version::parseVersionString(
A->getValue(), SourceLoc(), &Diags);
bool isValid = false;
if (vers.hasValue()) {
if (auto effectiveVers = vers.getValue().getEffectiveLanguageVersion()) {
Opts.EffectiveLanguageVersion = effectiveVers.getValue();
isValid = true;
}
}
if (!isValid)
diagnoseSwiftVersion(vers, A, Args, Diags);
}
if (auto A = Args.getLastArg(OPT_package_description_version)) {
auto vers = version::Version::parseVersionString(
A->getValue(), SourceLoc(), &Diags);
if (vers.hasValue()) {
Opts.PackageDescriptionVersion = vers.getValue();
} else {
return true;
}
}
Opts.AttachCommentsToDecls |= Args.hasArg(OPT_dump_api_path);
Opts.UseMalloc |= Args.hasArg(OPT_use_malloc);
Opts.DiagnosticsEditorMode |= Args.hasArg(OPT_diagnostics_editor_mode,
OPT_serialize_diagnostics_path);
Opts.EnableExperimentalStaticAssert |=
Args.hasArg(OPT_enable_experimental_static_assert);
Opts.EnableExperimentalConcurrency |=
Args.hasArg(OPT_enable_experimental_concurrency);
Opts.EnableExperimentalLexicalLifetimes |=
Args.hasArg(OPT_enable_experimental_lexical_lifetimes);
Opts.EnableExperimentalNamedOpaqueTypes |=
Args.hasArg(OPT_enable_experimental_named_opaque_types);
Opts.EnableExperimentalStructuralOpaqueTypes |=
Args.hasArg(OPT_enable_experimental_structural_opaque_types);
Opts.EnableExperimentalDistributed |=
Args.hasArg(OPT_enable_experimental_distributed);
Opts.EnableInferPublicSendable |=
Args.hasFlag(OPT_enable_infer_public_concurrent_value,
OPT_disable_infer_public_concurrent_value,
false);
Opts.EnableExperimentalFlowSensitiveConcurrentCaptures |=
Args.hasArg(OPT_enable_experimental_flow_sensitive_concurrent_captures);
Opts.DisableImplicitConcurrencyModuleImport |=
Args.hasArg(OPT_disable_implicit_concurrency_module_import);
/// experimental distributed also implicitly enables experimental concurrency
Opts.EnableExperimentalDistributed |=
Args.hasArg(OPT_enable_experimental_distributed);
Opts.EnableExperimentalConcurrency |=
Args.hasArg(OPT_enable_experimental_distributed);
Opts.DiagnoseInvalidEphemeralnessAsError |=
Args.hasArg(OPT_enable_invalid_ephemeralness_as_error);
if (auto A = Args.getLastArg(OPT_enable_deserialization_recovery,
OPT_disable_deserialization_recovery)) {
Opts.EnableDeserializationRecovery
= A->getOption().matches(OPT_enable_deserialization_recovery);
}
Opts.DisableAvailabilityChecking |=
Args.hasArg(OPT_disable_availability_checking);
Opts.CheckAPIAvailabilityOnly |=
Args.hasArg(OPT_check_api_availability_only);
if (auto A = Args.getLastArg(OPT_enable_conformance_availability_errors,
OPT_disable_conformance_availability_errors)) {
Opts.EnableConformanceAvailabilityErrors
= A->getOption().matches(OPT_enable_conformance_availability_errors);
}
Opts.WarnOnPotentiallyUnavailableEnumCase |=
Args.hasArg(OPT_warn_on_potentially_unavailable_enum_case);
Opts.WarnOnEditorPlaceholder |= Args.hasArg(OPT_warn_on_editor_placeholder);
if (auto A = Args.getLastArg(OPT_enable_access_control,
OPT_disable_access_control)) {
Opts.EnableAccessControl
= A->getOption().matches(OPT_enable_access_control);
}
if (auto A = Args.getLastArg(OPT_disable_typo_correction,
OPT_typo_correction_limit)) {
if (A->getOption().matches(OPT_disable_typo_correction))
Opts.TypoCorrectionLimit = 0;
else {
unsigned limit;
if (StringRef(A->getValue()).getAsInteger(10, limit)) {
Diags.diagnose(SourceLoc(), diag::error_invalid_arg_value,
A->getAsString(Args), A->getValue());
HadError = true;
} else {
Opts.TypoCorrectionLimit = limit;
}
}
}
if (auto A = Args.getLastArg(OPT_enable_target_os_checking,
OPT_disable_target_os_checking)) {
Opts.EnableTargetOSChecking
= A->getOption().matches(OPT_enable_target_os_checking);
}
Opts.EnableNewOperatorLookup = Args.hasFlag(OPT_enable_new_operator_lookup,
OPT_disable_new_operator_lookup,
/*default*/ false);
Opts.UseClangFunctionTypes |= Args.hasArg(OPT_use_clang_function_types);
Opts.NamedLazyMemberLoading &= !Args.hasArg(OPT_disable_named_lazy_member_loading);
if (Args.hasArg(OPT_verify_syntax_tree)) {
Opts.BuildSyntaxTree = true;
Opts.VerifySyntaxTree = true;
}
if (Args.hasArg(OPT_emit_fine_grained_dependency_sourcefile_dot_files))
Opts.EmitFineGrainedDependencySourcefileDotFiles = true;
if (Args.hasArg(OPT_enable_experimental_additive_arithmetic_derivation))
Opts.EnableExperimentalAdditiveArithmeticDerivedConformances = true;
Opts.EnableExperimentalForwardModeDifferentiation |=
Args.hasArg(OPT_enable_experimental_forward_mode_differentiation);
Opts.DebuggerSupport |= Args.hasArg(OPT_debugger_support);
if (Opts.DebuggerSupport)
Opts.EnableDollarIdentifiers = true;
Opts.DebuggerTestingTransform = Args.hasArg(OPT_debugger_testing_transform);
Opts.Playground |= Args.hasArg(OPT_playground);
Opts.PlaygroundTransform |= Args.hasArg(OPT_playground);
if (Args.hasArg(OPT_disable_playground_transform))
Opts.PlaygroundTransform = false;
Opts.PlaygroundHighPerformance |=
Args.hasArg(OPT_playground_high_performance);
// This can be enabled independently of the playground transform.
Opts.PCMacro |= Args.hasArg(OPT_pc_macro);
Opts.EnableThrowWithoutTry |= Args.hasArg(OPT_enable_throw_without_try);
if (auto A = Args.getLastArg(OPT_enable_objc_attr_requires_foundation_module,
OPT_disable_objc_attr_requires_foundation_module)) {
Opts.EnableObjCAttrRequiresFoundation
= A->getOption().matches(OPT_enable_objc_attr_requires_foundation_module);
}
if (auto A = Args.getLastArg(OPT_enable_testable_attr_requires_testable_module,
OPT_disable_testable_attr_requires_testable_module)) {
Opts.EnableTestableAttrRequiresTestableModule
= A->getOption().matches(OPT_enable_testable_attr_requires_testable_module);
}
if (Args.getLastArg(OPT_debug_cycles))
Opts.DebugDumpCycles = true;
if (Args.getLastArg(OPT_require_explicit_availability, OPT_require_explicit_availability_target)) {
Opts.RequireExplicitAvailability = true;
if (const Arg *A = Args.getLastArg(OPT_require_explicit_availability_target)) {
Opts.RequireExplicitAvailabilityTarget = A->getValue();
}
}
Opts.RequireExplicitSendable |= Args.hasArg(OPT_require_explicit_sendable);
for (const Arg *A : Args.filtered(OPT_define_availability)) {
Opts.AvailabilityMacros.push_back(A->getValue());
}
if (const Arg *A = Args.getLastArg(OPT_value_recursion_threshold)) {
unsigned threshold;
if (StringRef(A->getValue()).getAsInteger(10, threshold)) {
Diags.diagnose(SourceLoc(), diag::error_invalid_arg_value,
A->getAsString(Args), A->getValue());
HadError = true;
} else {
Opts.MaxCircularityDepth = threshold;
}
}
for (const Arg *A : Args.filtered(OPT_D)) {
Opts.addCustomConditionalCompilationFlag(A->getValue());
}
Opts.EnableAppExtensionRestrictions |= Args.hasArg(OPT_enable_app_extension);
Opts.EnableSwift3ObjCInference =
Args.hasFlag(OPT_enable_swift3_objc_inference,
OPT_disable_swift3_objc_inference, false);
if (const Arg *A = Args.getLastArg(OPT_library_level)) {
StringRef contents = A->getValue();
if (contents == "api") {
Opts.LibraryLevel = LibraryLevel::API;
} else if (contents == "spi") {
Opts.LibraryLevel = LibraryLevel::SPI;
} else {
Opts.LibraryLevel = LibraryLevel::Other;
if (contents != "other") {
// Error on unknown library levels.
auto inFlight = Diags.diagnose(SourceLoc(),
diag::error_unknown_library_level,
contents);
// Only warn for "ipi" as we may use it in the future.
if (contents == "ipi")
inFlight.limitBehavior(DiagnosticBehavior::Warning);
}
}
}
if (Opts.EnableSwift3ObjCInference) {
if (const Arg *A = Args.getLastArg(
OPT_warn_swift3_objc_inference_minimal,
OPT_warn_swift3_objc_inference_complete)) {
if (A->getOption().getID() == OPT_warn_swift3_objc_inference_minimal)
Opts.WarnSwift3ObjCInference = Swift3ObjCInferenceWarnings::Minimal;
else
Opts.WarnSwift3ObjCInference = Swift3ObjCInferenceWarnings::Complete;
}
}
Opts.WarnConcurrency |= Args.hasArg(OPT_warn_concurrency);
Opts.WarnImplicitOverrides =
Args.hasArg(OPT_warn_implicit_overrides);
Opts.EnableNSKeyedArchiverDiagnostics =
Args.hasFlag(OPT_enable_nskeyedarchiver_diagnostics,
OPT_disable_nskeyedarchiver_diagnostics,
Opts.EnableNSKeyedArchiverDiagnostics);
Opts.EnableNonFrozenEnumExhaustivityDiagnostics =
Args.hasFlag(OPT_enable_nonfrozen_enum_exhaustivity_diagnostics,
OPT_disable_nonfrozen_enum_exhaustivity_diagnostics,
Opts.isSwiftVersionAtLeast(5));
if (Arg *A = Args.getLastArg(OPT_Rpass_EQ))
Opts.OptimizationRemarkPassedPattern =
generateOptimizationRemarkRegex(Diags, Args, A);
if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ))
Opts.OptimizationRemarkMissedPattern =
generateOptimizationRemarkRegex(Diags, Args, A);
if (Arg *A = Args.getLastArg(OPT_Raccess_note)) {
auto value = llvm::StringSwitch<Optional<AccessNoteDiagnosticBehavior>>(A->getValue())
.Case("none", AccessNoteDiagnosticBehavior::Ignore)
.Case("failures", AccessNoteDiagnosticBehavior::RemarkOnFailure)
.Case("all", AccessNoteDiagnosticBehavior::RemarkOnFailureOrSuccess)
.Case("all-validate", AccessNoteDiagnosticBehavior::ErrorOnFailureRemarkOnSuccess)
.Default(None);
if (value)
Opts.AccessNoteBehavior = *value;
else
Diags.diagnose(SourceLoc(), diag::error_invalid_arg_value,
A->getAsString(Args), A->getValue());
}
Opts.EnableConcisePoundFile =
Args.hasArg(OPT_enable_experimental_concise_pound_file) ||
Opts.EffectiveLanguageVersion.isVersionAtLeast(6);
Opts.EnableCrossImportOverlays =
Args.hasFlag(OPT_enable_cross_import_overlays,
OPT_disable_cross_import_overlays,
Opts.EnableCrossImportOverlays);
Opts.EnableCrossImportRemarks = Args.hasArg(OPT_emit_cross_import_remarks);
Opts.EnableModuleLoadingRemarks = Args.hasArg(OPT_remark_loading_module);
llvm::Triple Target = Opts.Target;
StringRef TargetArg;
std::string TargetArgScratch;
if (const Arg *A = Args.getLastArg(OPT_target)) {
Target = llvm::Triple(A->getValue());
TargetArg = A->getValue();
// Backward compatibility hack: infer "simulator" environment for x86
// iOS/tvOS/watchOS. The driver takes care of this for the frontend
// most of the time, but loading of old .swiftinterface files goes
// directly to the frontend.
if (tripleInfersSimulatorEnvironment(Target)) {
// Set the simulator environment.
Target.setEnvironment(llvm::Triple::EnvironmentType::Simulator);
TargetArgScratch = Target.str();
TargetArg = TargetArgScratch;
}
}
if (const Arg *A = Args.getLastArg(OPT_target_variant)) {
Opts.TargetVariant = llvm::Triple(A->getValue());
}
// Collect -clang-target value if specified in the front-end invocation.
// Usually, the driver will pass down a clang target with the
// exactly same value as the main target, so we could dignose the usage of
// unavailable APIs.
// The reason we cannot infer clang target from -target is that not all
// front-end invocation will include a -target to start with. For instance,
// when compiling a Swift module from a textual interface, -target isn't
// necessary because the textual interface hardcoded the proper target triple
// to use. Inferring -clang-target there will always give us the default
// target triple.
if (const Arg *A = Args.getLastArg(OPT_clang_target)) {
Opts.ClangTarget = llvm::Triple(A->getValue());
}
Opts.EnableCXXInterop |= Args.hasArg(OPT_enable_cxx_interop);
Opts.EnableObjCInterop =
Args.hasFlag(OPT_enable_objc_interop, OPT_disable_objc_interop,
Target.isOSDarwin());
Opts.EnableSILOpaqueValues |= Args.hasArg(OPT_enable_sil_opaque_values);
Opts.VerifyAllSubstitutionMaps |= Args.hasArg(OPT_verify_all_substitution_maps);
Opts.EnableVolatileModules |= Args.hasArg(OPT_enable_volatile_modules);
Opts.UseDarwinPreStableABIBit =
(Target.isMacOSX() && Target.isMacOSXVersionLT(10, 14, 4)) ||
(Target.isiOS() && Target.isOSVersionLT(12, 2)) ||
(Target.isTvOS() && Target.isOSVersionLT(12, 2)) ||
(Target.isWatchOS() && Target.isOSVersionLT(5, 2));
// Must be processed after any other language options that could affect
// platform conditions.
bool UnsupportedOS, UnsupportedArch;
std::tie(UnsupportedOS, UnsupportedArch) = Opts.setTarget(Target);
SmallVector<StringRef, 3> TargetComponents;
TargetArg.split(TargetComponents, "-");
if (UnsupportedArch) {
auto TargetArgArch = TargetComponents.size() ? TargetComponents[0] : "";
Diags.diagnose(SourceLoc(), diag::error_unsupported_target_arch, TargetArgArch);
}
if (UnsupportedOS) {
auto TargetArgOS = TargetComponents.size() > 2 ? TargetComponents[2] : "";
Diags.diagnose(SourceLoc(), diag::error_unsupported_target_os, TargetArgOS);
}
// Parse the SDK version.
if (Arg *A = Args.getLastArg(options::OPT_target_sdk_version)) {
auto vers = version::Version::parseVersionString(
A->getValue(), SourceLoc(), &Diags);
if (vers.hasValue()) {
Opts.SDKVersion = *vers;
} else {
Diags.diagnose(SourceLoc(), diag::error_invalid_arg_value,
A->getAsString(Args), A->getValue());
}
}
// Parse the target variant SDK version.
if (Arg *A = Args.getLastArg(options::OPT_target_variant_sdk_version)) {
auto vers = version::Version::parseVersionString(
A->getValue(), SourceLoc(), &Diags);
if (vers.hasValue()) {
Opts.VariantSDKVersion = *vers;
} else {
Diags.diagnose(SourceLoc(), diag::error_invalid_arg_value,
A->getAsString(Args), A->getValue());
}
}
// Get the SDK name.
if (Arg *A = Args.getLastArg(options::OPT_target_sdk_name)) {
Opts.SDKName = A->getValue();
}
if (const Arg *A = Args.getLastArg(OPT_entry_point_function_name)) {
Opts.entryPointFunctionName = A->getValue();
}
if (FrontendOpts.RequestedAction == FrontendOptions::ActionType::EmitSyntax) {
Opts.BuildSyntaxTree = true;
Opts.VerifySyntaxTree = true;
}
// Configure lexing to parse and remember comments if:
// - Emitting a swiftdoc/swiftsourceinfo
// - Performing index-while-building
// - Emitting a symbol graph file
// If we are asked to emit a module documentation file, configure lexing and
// parsing to remember comments.
if (FrontendOpts.InputsAndOutputs.hasModuleDocOutputPath() ||
FrontendOpts.InputsAndOutputs.hasModuleSourceInfoOutputPath() ||
!FrontendOpts.IndexStorePath.empty() || FrontendOpts.EmitSymbolGraph) {
Opts.AttachCommentsToDecls = true;
}
// If we're parsing SIL, access control doesn't make sense to enforce.
if (Args.hasArg(OPT_parse_sil) ||
FrontendOpts.InputsAndOutputs.shouldTreatAsSIL()) {
Opts.EnableAccessControl = false;
Opts.DisableAvailabilityChecking = true;
}
if (FrontendOpts.AllowModuleWithCompilerErrors) {
Opts.AllowModuleWithCompilerErrors = true;
}
if (auto A =
Args.getLastArg(OPT_enable_ast_verifier, OPT_disable_ast_verifier)) {
using ASTVerifierOverrideKind = LangOptions::ASTVerifierOverrideKind;
if (A->getOption().matches(OPT_enable_ast_verifier)) {
Opts.ASTVerifierOverride = ASTVerifierOverrideKind::EnableVerifier;
} else if (A->getOption().matches(OPT_disable_ast_verifier)) {
Opts.ASTVerifierOverride = ASTVerifierOverrideKind::DisableVerifier;
} else {
// This is an assert since getLastArg should not have let us get here if
// we did not have one of enable/disable specified.
llvm_unreachable(
"Should have found one of enable/disable ast verifier?!");
}
}
if (auto A = Args.getLastArg(OPT_requirement_machine_EQ)) {
auto value = llvm::StringSwitch<Optional<RequirementMachineMode>>(A->getValue())
.Case("off", RequirementMachineMode::Disabled)
.Case("on", RequirementMachineMode::Enabled)
.Case("verify", RequirementMachineMode::Verify)
.Default(None);
if (value)
Opts.EnableRequirementMachine = *value;
else
Diags.diagnose(SourceLoc(), diag::error_invalid_arg_value,
A->getAsString(Args), A->getValue());
}
if (auto A = Args.getLastArg(OPT_requirement_machine_protocol_signatures_EQ)) {
auto value = llvm::StringSwitch<Optional<RequirementMachineMode>>(A->getValue())
.Case("off", RequirementMachineMode::Disabled)
.Case("on", RequirementMachineMode::Enabled)
.Case("verify", RequirementMachineMode::Verify)
.Default(None);
if (value)
Opts.RequirementMachineProtocolSignatures = *value;
else
Diags.diagnose(SourceLoc(), diag::error_invalid_arg_value,
A->getAsString(Args), A->getValue());
}
Opts.DumpRequirementMachine = Args.hasArg(
OPT_dump_requirement_machine);
Opts.AnalyzeRequirementMachine = Args.hasArg(
OPT_analyze_requirement_machine);
if (const Arg *A = Args.getLastArg(OPT_debug_requirement_machine))
Opts.DebugRequirementMachine = A->getValue();
if (const Arg *A = Args.getLastArg(OPT_requirement_machine_step_limit)) {
unsigned limit;
if (StringRef(A->getValue()).getAsInteger(10, limit)) {
Diags.diagnose(SourceLoc(), diag::error_invalid_arg_value,
A->getAsString(Args), A->getValue());
HadError = true;
} else {
Opts.RequirementMachineStepLimit = limit;
}
}
if (const Arg *A = Args.getLastArg(OPT_requirement_machine_depth_limit)) {
unsigned limit;
if (StringRef(A->getValue()).getAsInteger(10, limit)) {
Diags.diagnose(SourceLoc(), diag::error_invalid_arg_value,
A->getAsString(Args), A->getValue());
HadError = true;
} else {
Opts.RequirementMachineDepthLimit = limit;
}
}
return HadError || UnsupportedOS || UnsupportedArch;
}
static bool ParseTypeCheckerArgs(TypeCheckerOptions &Opts, ArgList &Args,
DiagnosticEngine &Diags,
const FrontendOptions &FrontendOpts) {
using namespace options;
bool HadError = false;
auto setUnsignedIntegerArgument =
[&Args, &Diags, &HadError](options::ID optionID, unsigned &valueToSet) {
if (const Arg *A = Args.getLastArg(optionID)) {
unsigned attempt;
if (StringRef(A->getValue()).getAsInteger(/*radix*/ 10, attempt)) {
Diags.diagnose(SourceLoc(), diag::error_invalid_arg_value,
A->getAsString(Args), A->getValue());
HadError = true;
} else {
valueToSet = attempt;
}
}
};
setUnsignedIntegerArgument(OPT_warn_long_function_bodies,
Opts.WarnLongFunctionBodies);
setUnsignedIntegerArgument(OPT_warn_long_expression_type_checking,
Opts.WarnLongExpressionTypeChecking);
setUnsignedIntegerArgument(OPT_solver_expression_time_threshold_EQ,
Opts.ExpressionTimeoutThreshold);
setUnsignedIntegerArgument(OPT_switch_checking_invocation_threshold_EQ,
Opts.SwitchCheckingInvocationThreshold);
setUnsignedIntegerArgument(OPT_debug_constraints_attempt,
Opts.DebugConstraintSolverAttempt);
setUnsignedIntegerArgument(OPT_solver_memory_threshold,
Opts.SolverMemoryThreshold);
setUnsignedIntegerArgument(OPT_solver_shrink_unsolved_threshold,
Opts.SolverShrinkUnsolvedThreshold);
Opts.DebugTimeFunctionBodies |= Args.hasArg(OPT_debug_time_function_bodies);
Opts.DebugTimeExpressions |=
Args.hasArg(OPT_debug_time_expression_type_checking);
// Checking availability of the API only relies on skipping non-inlinable
// function bodies. Define it first so it can be overridden by the other
// flags.
if (Args.hasArg(OPT_check_api_availability_only))
Opts.SkipFunctionBodies = FunctionBodySkipping::NonInlinable;
// Check for SkipFunctionBodies arguments in order from skipping less to
// skipping more.
if (Args.hasArg(
OPT_experimental_skip_non_inlinable_function_bodies_without_types))
Opts.SkipFunctionBodies = FunctionBodySkipping::NonInlinableWithoutTypes;
// If asked to perform InstallAPI, go ahead and enable non-inlinable function
// body skipping.
if (Args.hasArg(OPT_experimental_skip_non_inlinable_function_bodies) ||
Args.hasArg(OPT_tbd_is_installapi))
Opts.SkipFunctionBodies = FunctionBodySkipping::NonInlinable;
if (Args.hasArg(OPT_experimental_skip_all_function_bodies))
Opts.SkipFunctionBodies = FunctionBodySkipping::All;
if (Opts.SkipFunctionBodies != FunctionBodySkipping::None &&
FrontendOpts.ModuleName == SWIFT_ONONE_SUPPORT) {
// Disable these optimizations if we're compiling SwiftOnoneSupport,
// because we _definitely_ need to look inside every declaration to figure
// out what gets prespecialized.
Opts.SkipFunctionBodies = FunctionBodySkipping::None;
Diags.diagnose(
SourceLoc(),
diag::module_incompatible_with_skip_function_bodies,
SWIFT_ONONE_SUPPORT);
}
Opts.DisableConstraintSolverPerformanceHacks |=
Args.hasArg(OPT_disable_constraint_solver_performance_hacks);
Opts.EnableOperatorDesignatedTypes |=
Args.hasArg(OPT_enable_operator_designated_types);
// Always enable operator designated types for the standard library.
Opts.EnableOperatorDesignatedTypes |= FrontendOpts.ParseStdlib;
Opts.EnableOneWayClosureParameters |=
Args.hasArg(OPT_experimental_one_way_closure_params);
Opts.PrintFullConvention |=
Args.hasArg(OPT_experimental_print_full_convention);
Opts.DebugConstraintSolver |= Args.hasArg(OPT_debug_constraints);
for (const Arg *A : Args.filtered(OPT_debug_constraints_on_line)) {
unsigned line;
if (StringRef(A->getValue()).getAsInteger(/*radix*/ 10, line)) {
Diags.diagnose(SourceLoc(), diag::error_invalid_arg_value,
A->getAsString(Args), A->getValue());
HadError = true;
} else {
Opts.DebugConstraintSolverOnLines.push_back(line);
}
}
llvm::sort(Opts.DebugConstraintSolverOnLines);
if (const Arg *A = Args.getLastArg(OPT_debug_forbid_typecheck_prefix)) {
Opts.DebugForbidTypecheckPrefix = A->getValue();
}
if (Args.getLastArg(OPT_solver_disable_shrink))