InputArgList *OptTable::ParseArgs(const char* const *ArgBegin,
const char* const *ArgEnd,
unsigned &MissingArgIndex,
unsigned &MissingArgCount) const {
InputArgList *Args = new InputArgList(ArgBegin, ArgEnd);
// FIXME: Handle '@' args (or at least error on them).
MissingArgIndex = MissingArgCount = 0;
unsigned Index = 0, End = ArgEnd - ArgBegin;
while (Index < End) {
// Ignore empty arguments (other things may still take them as arguments).
if (Args->getArgString(Index)[0] == '\0') {
++Index;
continue;
}
unsigned Prev = Index;
Arg *A = ParseOneArg(*Args, Index);
assert(Index > Prev && "Parser failed to consume argument.");
// Check for missing argument error.
if (!A) {
assert(Index >= End && "Unexpected parser error.");
assert(Index - Prev - 1 && "No missing arguments!");
MissingArgIndex = Prev;
MissingArgCount = Index - Prev - 1;
break;
}
Args->append(A);
}
return Args;
}
InputArgList *Driver::ParseArgStrings(const char **ArgBegin,
const char **ArgEnd) {
llvm::PrettyStackTraceString CrashInfo("Command line argument parsing");
InputArgList *Args = new InputArgList(ArgBegin, ArgEnd);
// FIXME: Handle '@' args (or at least error on them).
unsigned Index = 0, End = ArgEnd - ArgBegin;
while (Index < End) {
// gcc's handling of empty arguments doesn't make
// sense, but this is not a common use case. :)
//
// We just ignore them here (note that other things may
// still take them as arguments).
if (Args->getArgString(Index)[0] == '\0') {
++Index;
continue;
}
unsigned Prev = Index;
Arg *A = getOpts().ParseOneArg(*Args, Index);
assert(Index > Prev && "Parser failed to consume argument.");
// Check for missing argument error.
if (!A) {
assert(Index >= End && "Unexpected parser error.");
Diag(clang::diag::err_drv_missing_argument)
<< Args->getArgString(Prev)
<< (Index - Prev - 1);
break;
}
if (A->getOption().isUnsupported()) {
Diag(clang::diag::err_drv_unsupported_opt) << A->getAsString(*Args);
continue;
}
Args->append(A);
}
return Args;
}
InputArgList *Driver::ParseArgStrings(const char **ArgBegin,
const char **ArgEnd) {
llvm::PrettyStackTraceString CrashInfo("Command line argument parsing");
unsigned MissingArgIndex, MissingArgCount;
InputArgList *Args = getOpts().ParseArgs(ArgBegin, ArgEnd,
MissingArgIndex, MissingArgCount);
// Check for missing argument error.
if (MissingArgCount)
Diag(clang::diag::err_drv_missing_argument)
<< Args->getArgString(MissingArgIndex) << MissingArgCount;
// Check for unsupported options.
for (ArgList::const_iterator it = Args->begin(), ie = Args->end();
it != ie; ++it) {
Arg *A = *it;
if (A->getOption().isUnsupported()) {
Diag(clang::diag::err_drv_unsupported_opt) << A->getAsString(*Args);
continue;
}
}
return Args;
}
// FIXME: Define the need for this testing away.
static int cc1_test(Diagnostic &Diags,
const char **ArgBegin, const char **ArgEnd) {
using namespace clang::driver;
llvm::errs() << "cc1 argv:";
for (const char **i = ArgBegin; i != ArgEnd; ++i)
llvm::errs() << " \"" << *i << '"';
llvm::errs() << "\n";
// Parse the arguments.
OptTable *Opts = createCC1OptTable();
unsigned MissingArgIndex, MissingArgCount;
InputArgList *Args = Opts->ParseArgs(ArgBegin, ArgEnd,
MissingArgIndex, MissingArgCount);
// Check for missing argument error.
if (MissingArgCount)
Diags.Report(clang::diag::err_drv_missing_argument)
<< Args->getArgString(MissingArgIndex) << MissingArgCount;
// Dump the parsed arguments.
llvm::errs() << "cc1 parsed options:\n";
for (ArgList::const_iterator it = Args->begin(), ie = Args->end();
it != ie; ++it)
(*it)->dump();
// Create a compiler invocation.
llvm::errs() << "cc1 creating invocation.\n";
CompilerInvocation Invocation;
CompilerInvocation::CreateFromArgs(Invocation, ArgBegin, ArgEnd, Diags);
// Convert the invocation back to argument strings.
std::vector<std::string> InvocationArgs;
Invocation.toArgs(InvocationArgs);
// Dump the converted arguments.
SmallVector<const char*, 32> Invocation2Args;
llvm::errs() << "invocation argv :";
for (unsigned i = 0, e = InvocationArgs.size(); i != e; ++i) {
Invocation2Args.push_back(InvocationArgs[i].c_str());
llvm::errs() << " \"" << InvocationArgs[i] << '"';
}
llvm::errs() << "\n";
// Convert those arguments to another invocation, and check that we got the
// same thing.
CompilerInvocation Invocation2;
CompilerInvocation::CreateFromArgs(Invocation2, Invocation2Args.begin(),
Invocation2Args.end(), Diags);
// FIXME: Implement CompilerInvocation comparison.
if (true) {
//llvm::errs() << "warning: Invocations differ!\n";
std::vector<std::string> Invocation2Args;
Invocation2.toArgs(Invocation2Args);
llvm::errs() << "invocation2 argv:";
for (unsigned i = 0, e = Invocation2Args.size(); i != e; ++i)
llvm::errs() << " \"" << Invocation2Args[i] << '"';
llvm::errs() << "\n";
}
return 0;
}
bool AssemblerInvocation::CreateFromArgs(AssemblerInvocation &Opts,
ArrayRef<const char *> Argv,
DiagnosticsEngine &Diags) {
bool Success = true;
// Parse the arguments.
std::unique_ptr<OptTable> OptTbl(createDriverOptTable());
const unsigned IncludedFlagsBitmask = options::CC1AsOption;
unsigned MissingArgIndex, MissingArgCount;
InputArgList Args = OptTbl->ParseArgs(Argv, MissingArgIndex, MissingArgCount,
IncludedFlagsBitmask);
// Check for missing argument error.
if (MissingArgCount) {
Diags.Report(diag::err_drv_missing_argument)
<< Args.getArgString(MissingArgIndex) << MissingArgCount;
Success = false;
}
// Issue errors on unknown arguments.
for (const Arg *A : Args.filtered(OPT_UNKNOWN)) {
auto ArgString = A->getAsString(Args);
std::string Nearest;
if (OptTbl->findNearest(ArgString, Nearest, IncludedFlagsBitmask) > 1)
Diags.Report(diag::err_drv_unknown_argument) << ArgString;
else
Diags.Report(diag::err_drv_unknown_argument_with_suggestion)
<< ArgString << Nearest;
Success = false;
}
// Construct the invocation.
// Target Options
Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
Opts.Features = Args.getAllArgValues(OPT_target_feature);
// Use the default target triple if unspecified.
if (Opts.Triple.empty())
Opts.Triple = llvm::sys::getDefaultTargetTriple();
// Language Options
Opts.IncludePaths = Args.getAllArgValues(OPT_I);
Opts.NoInitialTextSection = Args.hasArg(OPT_n);
Opts.SaveTemporaryLabels = Args.hasArg(OPT_msave_temp_labels);
// Any DebugInfoKind implies GenDwarfForAssembly.
Opts.GenDwarfForAssembly = Args.hasArg(OPT_debug_info_kind_EQ);
if (const Arg *A = Args.getLastArg(OPT_compress_debug_sections,
OPT_compress_debug_sections_EQ)) {
if (A->getOption().getID() == OPT_compress_debug_sections) {
// TODO: be more clever about the compression type auto-detection
Opts.CompressDebugSections = llvm::DebugCompressionType::GNU;
} else {
Opts.CompressDebugSections =
llvm::StringSwitch<llvm::DebugCompressionType>(A->getValue())
.Case("none", llvm::DebugCompressionType::None)
.Case("zlib", llvm::DebugCompressionType::Z)
.Case("zlib-gnu", llvm::DebugCompressionType::GNU)
.Default(llvm::DebugCompressionType::None);
}
}
Opts.RelaxELFRelocations = Args.hasArg(OPT_mrelax_relocations);
Opts.DwarfVersion = getLastArgIntValue(Args, OPT_dwarf_version_EQ, 2, Diags);
Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
Opts.DwarfDebugProducer = Args.getLastArgValue(OPT_dwarf_debug_producer);
Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ))
Opts.DebugPrefixMap.insert(StringRef(Arg).split('='));
// Frontend Options
if (Args.hasArg(OPT_INPUT)) {
bool First = true;
for (const Arg *A : Args.filtered(OPT_INPUT)) {
if (First) {
Opts.InputFile = A->getValue();
First = false;
} else {
Diags.Report(diag::err_drv_unknown_argument) << A->getAsString(Args);
Success = false;
}
}
}
Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
Opts.OutputPath = Args.getLastArgValue(OPT_o);
Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file);
if (Arg *A = Args.getLastArg(OPT_filetype)) {
StringRef Name = A->getValue();
unsigned OutputType = StringSwitch<unsigned>(Name)
.Case("asm", FT_Asm)
.Case("null", FT_Null)
.Case("obj", FT_Obj)
.Default(~0U);
if (OutputType == ~0U) {
Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
Success = false;
} else
Opts.OutputType = FileType(OutputType);
}
Opts.ShowHelp = Args.hasArg(OPT_help);
Opts.ShowVersion = Args.hasArg(OPT_version);
// Transliterate Options
Opts.OutputAsmVariant =
getLastArgIntValue(Args, OPT_output_asm_variant, 0, Diags);
Opts.ShowEncoding = Args.hasArg(OPT_show_encoding);
Opts.ShowInst = Args.hasArg(OPT_show_inst);
// Assemble Options
Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings);
Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
Opts.IncrementalLinkerCompatible =
Args.hasArg(OPT_mincremental_linker_compatible);
Opts.SymbolDefs = Args.getAllArgValues(OPT_defsym);
// EmbedBitcode Option. If -fembed-bitcode is enabled, set the flag.
// EmbedBitcode behaves the same for all embed options for assembly files.
if (auto *A = Args.getLastArg(OPT_fembed_bitcode_EQ)) {
Opts.EmbedBitcode = llvm::StringSwitch<unsigned>(A->getValue())
.Case("all", 1)
.Case("bitcode", 1)
.Case("marker", 1)
.Default(0);
}
return Success;
}
bool AssemblerInvocation::CreateFromArgs(AssemblerInvocation &Opts,
ArrayRef<const char *> Argv,
DiagnosticsEngine &Diags) {
bool Success = true;
// Parse the arguments.
std::unique_ptr<OptTable> OptTbl(createDriverOptTable());
const unsigned IncludedFlagsBitmask = options::CC1AsOption;
unsigned MissingArgIndex, MissingArgCount;
InputArgList Args = OptTbl->ParseArgs(Argv, MissingArgIndex, MissingArgCount,
IncludedFlagsBitmask);
// Check for missing argument error.
if (MissingArgCount) {
Diags.Report(diag::err_drv_missing_argument)
<< Args.getArgString(MissingArgIndex) << MissingArgCount;
Success = false;
}
// Issue errors on unknown arguments.
for (const Arg *A : Args.filtered(OPT_UNKNOWN)) {
Diags.Report(diag::err_drv_unknown_argument) << A->getAsString(Args);
Success = false;
}
// Construct the invocation.
// Target Options
Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
Opts.Features = Args.getAllArgValues(OPT_target_feature);
// Use the default target triple if unspecified.
if (Opts.Triple.empty())
Opts.Triple = llvm::sys::getDefaultTargetTriple();
// Language Options
Opts.IncludePaths = Args.getAllArgValues(OPT_I);
Opts.NoInitialTextSection = Args.hasArg(OPT_n);
Opts.SaveTemporaryLabels = Args.hasArg(OPT_msave_temp_labels);
// Any DebugInfoKind implies GenDwarfForAssembly.
Opts.GenDwarfForAssembly = Args.hasArg(OPT_debug_info_kind_EQ);
Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections);
Opts.RelaxELFRelocations = Args.hasArg(OPT_mrelax_relocations);
Opts.DwarfVersion = getLastArgIntValue(Args, OPT_dwarf_version_EQ, 2, Diags);
Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
Opts.DwarfDebugProducer = Args.getLastArgValue(OPT_dwarf_debug_producer);
Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
// Frontend Options
if (Args.hasArg(OPT_INPUT)) {
bool First = true;
for (arg_iterator it = Args.filtered_begin(OPT_INPUT),
ie = Args.filtered_end();
it != ie; ++it, First = false) {
const Arg *A = it;
if (First)
Opts.InputFile = A->getValue();
else {
Diags.Report(diag::err_drv_unknown_argument) << A->getAsString(Args);
Success = false;
}
}
}
Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
Opts.OutputPath = Args.getLastArgValue(OPT_o);
if (Arg *A = Args.getLastArg(OPT_filetype)) {
StringRef Name = A->getValue();
unsigned OutputType = StringSwitch<unsigned>(Name)
.Case("asm", FT_Asm)
.Case("null", FT_Null)
.Case("obj", FT_Obj)
.Default(~0U);
if (OutputType == ~0U) {
Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
Success = false;
} else
Opts.OutputType = FileType(OutputType);
}
Opts.ShowHelp = Args.hasArg(OPT_help);
Opts.ShowVersion = Args.hasArg(OPT_version);
// Transliterate Options
Opts.OutputAsmVariant =
getLastArgIntValue(Args, OPT_output_asm_variant, 0, Diags);
Opts.ShowEncoding = Args.hasArg(OPT_show_encoding);
Opts.ShowInst = Args.hasArg(OPT_show_inst);
// Assemble Options
Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings);
Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
Opts.IncrementalLinkerCompatible =
Args.hasArg(OPT_mincremental_linker_compatible);
return Success;
}