[llvm-profdata] Report if profile data file is IR- or FE-level

Differential Revision: https://reviews.llvm.org/D39997

llvm-svn: 318159
diff --git a/llvm/tools/llvm-profdata/llvm-profdata.cpp b/llvm/tools/llvm-profdata/llvm-profdata.cpp
index 8e21a7a9..000bca2 100644
--- a/llvm/tools/llvm-profdata/llvm-profdata.cpp
+++ b/llvm/tools/llvm-profdata/llvm-profdata.cpp
@@ -625,6 +625,8 @@
   if (ShowCounts && TextFormat)
     return 0;
   std::unique_ptr<ProfileSummary> PS(Builder.getSummary());
+  OS << "Instrumentation level: "
+     << (Reader->isIRLevelProfile() ? "IR" : "Front-end") << "\n";
   if (ShowAllFunctions || !ShowFunction.empty())
     OS << "Functions shown: " << ShownFunctions << "\n";
   OS << "Total functions: " << PS->getNumFunctions() << "\n";