Import prebuilt clang toolchain for linux.
diff --git a/linux-x64/clang/include/llvm/DebugInfo/CodeView/FunctionId.h b/linux-x64/clang/include/llvm/DebugInfo/CodeView/FunctionId.h
new file mode 100644
index 0000000..1af3da8
--- /dev/null
+++ b/linux-x64/clang/include/llvm/DebugInfo/CodeView/FunctionId.h
@@ -0,0 +1,56 @@
+//===- FunctionId.h ---------------------------------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_DEBUGINFO_CODEVIEW_FUNCTIONID_H
+#define LLVM_DEBUGINFO_CODEVIEW_FUNCTIONID_H
+
+#include <cinttypes>
+
+namespace llvm {
+namespace codeview {
+
+class FunctionId {
+public:
+ FunctionId() : Index(0) {}
+
+ explicit FunctionId(uint32_t Index) : Index(Index) {}
+
+ uint32_t getIndex() const { return Index; }
+
+private:
+ uint32_t Index;
+};
+
+inline bool operator==(const FunctionId &A, const FunctionId &B) {
+ return A.getIndex() == B.getIndex();
+}
+
+inline bool operator!=(const FunctionId &A, const FunctionId &B) {
+ return A.getIndex() != B.getIndex();
+}
+
+inline bool operator<(const FunctionId &A, const FunctionId &B) {
+ return A.getIndex() < B.getIndex();
+}
+
+inline bool operator<=(const FunctionId &A, const FunctionId &B) {
+ return A.getIndex() <= B.getIndex();
+}
+
+inline bool operator>(const FunctionId &A, const FunctionId &B) {
+ return A.getIndex() > B.getIndex();
+}
+
+inline bool operator>=(const FunctionId &A, const FunctionId &B) {
+ return A.getIndex() >= B.getIndex();
+}
+}
+}
+
+#endif