3 files changed, 116 insertions, 0 deletions
diff --git a/clang/lib/Options/CMakeLists.txt b/clang/lib/Options/CMakeLists.txt
new file mode 100644
index 0000000..a762e99
--- /dev/null
+++ b/clang/lib/Options/CMakeLists.txt
@@ -0,0 +1,18 @@
+set(LLVM_LINK_COMPONENTS
+  Option
+  Support
+)
+
+add_clang_library(clangOptions
+  DriverOptions.cpp
+  OptionUtils.cpp
+  
+  DEPENDS
+  ClangDriverOptions
+  # These generated headers are included transitively.
+  target_parser_gen
+
+  LINK_LIBS
+  clangBasic
+  ${system_libs}
+)
diff --git a/clang/lib/Options/DriverOptions.cpp b/clang/lib/Options/DriverOptions.cpp
new file mode 100644
index 0000000..d91e929
--- /dev/null
+++ b/clang/lib/Options/DriverOptions.cpp
@@ -0,0 +1,51 @@
+//===--- DriverOptions.cpp - Driver Options Table -------------------------===//
+//
+// 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 "clang/Options/Options.h"
+#include "llvm/Option/OptTable.h"
+#include <cassert>
+
+using namespace clang::options;
+using namespace llvm::opt;
+
+#define OPTTABLE_STR_TABLE_CODE
+#include "clang/Options/Options.inc"
+#undef OPTTABLE_STR_TABLE_CODE
+
+#define OPTTABLE_VALUES_CODE
+#include "clang/Options/Options.inc"
+#undef OPTTABLE_VALUES_CODE
+
+#define OPTTABLE_PREFIXES_TABLE_CODE
+#include "clang/Options/Options.inc"
+#undef OPTTABLE_PREFIXES_TABLE_CODE
+
+#define OPTTABLE_PREFIXES_UNION_CODE
+#include "clang/Options/Options.inc"
+#undef OPTTABLE_PREFIXES_UNION_CODE
+
+static constexpr OptTable::Info InfoTable[] = {
+#define OPTION(...) LLVM_CONSTRUCT_OPT_INFO(__VA_ARGS__),
+#include "clang/Options/Options.inc"
+#undef OPTION
+};
+
+namespace {
+
+class DriverOptTable : public PrecomputedOptTable {
+public:
+  DriverOptTable()
+      : PrecomputedOptTable(OptionStrTable, OptionPrefixesTable, InfoTable,
+                            OptionPrefixesUnion) {}
+};
+} // anonymous namespace
+
+const llvm::opt::OptTable &clang::getDriverOptTable() {
+  static DriverOptTable Table;
+  return Table;
+}
diff --git a/clang/lib/Options/OptionUtils.cpp b/clang/lib/Options/OptionUtils.cpp
new file mode 100644
index 0000000..fcafd3c
--- /dev/null
+++ b/clang/lib/Options/OptionUtils.cpp
@@ -0,0 +1,47 @@
+//===--- OptionUtils.cpp - Utilities for command line arguments -----------===//
+//
+// 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 "clang/Options/OptionUtils.h"
+#include "clang/Basic/Diagnostic.h"
+#include "clang/Basic/DiagnosticDriver.h"
+#include "llvm/Option/ArgList.h"
+
+using namespace clang;
+using namespace llvm::opt;
+
+namespace {
+template <typename IntTy>
+IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id,
+                             IntTy Default, DiagnosticsEngine *Diags,
+                             unsigned Base) {
+  IntTy Res = Default;
+  if (Arg *A = Args.getLastArg(Id)) {
+    if (StringRef(A->getValue()).getAsInteger(Base, Res)) {
+      if (Diags)
+        Diags->Report(diag::err_drv_invalid_int_value)
+            << A->getAsString(Args) << A->getValue();
+    }
+  }
+  return Res;
+}
+} // namespace
+
+namespace clang {
+
+int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default,
+                       DiagnosticsEngine *Diags, unsigned Base) {
+  return getLastArgIntValueImpl<int>(Args, Id, Default, Diags, Base);
+}
+
+uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id,
+                               uint64_t Default, DiagnosticsEngine *Diags,
+                               unsigned Base) {
+  return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags, Base);
+}
+
+} // namespace clang