Index: lib/Transforms/Instrumentation/GCOVProfiling.cpp
===================================================================
--- lib/Transforms/Instrumentation/GCOVProfiling.cpp
+++ lib/Transforms/Instrumentation/GCOVProfiling.cpp
@@ -583,6 +583,10 @@
                                                 Options.ExitBlockBeforeBody));
       GCOVFunction &Func = *Funcs.back();
 
+      // Add the function line number to the lines of the entry block
+      // to have a counter for the function definition
+      Func.getBlock(&F.getEntryBlock()).getFile(SP->getFilename()).addLine(SP->getLine());
+
       for (auto &BB : F) {
         GCOVBlock &Block = Func.getBlock(&BB);
         TerminatorInst *TI = BB.getTerminator();