diff --git a/llvm/tools/llvm-profgen/ErrorHandling.h b/llvm/tools/llvm-profgen/ErrorHandling.h
--- a/llvm/tools/llvm-profgen/ErrorHandling.h
+++ b/llvm/tools/llvm-profgen/ErrorHandling.h
@@ -10,6 +10,7 @@
 #define LLVM_TOOLS_LLVM_PROFGEN_ERRORHANDLING_H
 
 #include "llvm/ADT/Twine.h"
+#include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Errc.h"
 #include "llvm/Support/Error.h"
 #include "llvm/Support/ErrorOr.h"
@@ -18,6 +19,8 @@
 
 using namespace llvm;
 
+extern cl::opt<bool> VerboseMode;
+
 [[noreturn]] inline void exitWithError(const Twine &Message,
                                        StringRef Whence = StringRef(),
                                        StringRef Hint = StringRef()) {
@@ -46,11 +49,12 @@
   exitWithError(EO.takeError(), std::forward<Ts>(Args)...);
 }
 
-inline void emitWarningSummary(uint64_t Num, uint64_t Total, StringRef Msg) {
-  if (!Total || !Num)
-    return;
-  WithColor::warning() << format("%.2f", static_cast<double>(Num) * 100 / Total)
-                       << "%(" << Num << "/" << Total << ") " << Msg << "\n";
+inline void emitWarningSummary(uint64_t Num, uint64_t Total, StringRef Msg,
+                               bool AlwaysEmit = false) {
+  if (Total && Num && (VerboseMode || AlwaysEmit))
+    WithColor::warning() << format("%.2f",
+                                   static_cast<double>(Num) * 100 / Total)
+                         << "%(" << Num << "/" << Total << ") " << Msg << "\n";
 }
 
 #endif
diff --git a/llvm/tools/llvm-profgen/ProfiledBinary.cpp b/llvm/tools/llvm-profgen/ProfiledBinary.cpp
--- a/llvm/tools/llvm-profgen/ProfiledBinary.cpp
+++ b/llvm/tools/llvm-profgen/ProfiledBinary.cpp
@@ -188,7 +188,8 @@
   }
   emitWarningSummary(NoFuncEntryNum, BinaryFunctions.size(),
                      "of functions failed to determine function entry due to "
-                     "inconsistent name from symbol table and dwarf info.");
+                     "inconsistent name from symbol table and dwarf info.",
+                     true);
 }
 
 void ProfiledBinary::load() {
diff --git a/llvm/tools/llvm-profgen/llvm-profgen.cpp b/llvm/tools/llvm-profgen/llvm-profgen.cpp
--- a/llvm/tools/llvm-profgen/llvm-profgen.cpp
+++ b/llvm/tools/llvm-profgen/llvm-profgen.cpp
@@ -71,6 +71,13 @@
              "from it instead of the executable binary."),
     cl::cat(ProfGenCategory));
 
+cl::opt<bool>
+    VerboseMode("verbose", cl::init(false), cl::ZeroOrMore,
+                cl::desc("Enable verbose mode, i.e. print out all warnings."));
+
+static cl::alias VA("v", cl::desc("Alias for --verbose"),
+                    cl::aliasopt(VerboseMode));
+
 extern cl::opt<bool> ShowDisassemblyOnly;
 extern cl::opt<bool> ShowSourceLocations;
 extern cl::opt<bool> SkipSymbolization;