1 files changed, 51 insertions, 0 deletions
diff --git a/include/llvm/ProfileData/InstrProf.h b/include/llvm/ProfileData/InstrProf.h
new file mode 100644
index 0000000000000..eafb76886c83e
--- /dev/null
+++ b/include/llvm/ProfileData/InstrProf.h
@@ -0,0 +1,51 @@
+//=-- InstrProf.h - Instrumented profiling format support ---------*- C++ -*-=//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Instrumentation-based profiling data is generated by instrumented
+// binaries through library functions in compiler-rt, and read by the clang
+// frontend to feed PGO.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_PROFILEDATA_INSTRPROF_H_
+#define LLVM_PROFILEDATA_INSTRPROF_H_
+
+#include <system_error>
+
+namespace llvm {
+const std::error_category &instrprof_category();
+
+enum class instrprof_error {
+    success = 0,
+    eof,
+    bad_magic,
+    bad_header,
+    unsupported_version,
+    unsupported_hash_type,
+    too_large,
+    truncated,
+    malformed,
+    unknown_function,
+    hash_mismatch,
+    count_mismatch,
+    counter_overflow
+};
+
+inline std::error_code make_error_code(instrprof_error E) {
+  return std::error_code(static_cast<int>(E), instrprof_category());
+}
+
+} // end namespace llvm
+
+namespace std {
+template <>
+struct is_error_code_enum<llvm::instrprof_error> : std::true_type {};
+}
+
+#endif // LLVM_PROFILEDATA_INSTRPROF_H_