IRgen: Make sure any prolog instructions get debug info.

llvm-svn: 107320

clang/lib/CodeGen/CodeGenFunction.cpp

@@ -254,6 +254,7 @@ void CodeGenFunction::StartFunction(GlobalDecl GD, QualType RetTy,
   if (CGDebugInfo *DI = getDebugInfo()) {
     DI->setLocation(StartLoc);
     DI->EmitFunctionStart(GD, FnType, CurFn, Builder);
+    DI->EmitStopPoint(CurFn, Builder);
   }
 
   EmitFunctionInstrumentation("__cyg_profile_func_enter");