diff --git a/gen/optimizer.cpp b/gen/optimizer.cpp
index 889ad828..f25354b6 100644
--- a/gen/optimizer.cpp
+++ b/gen/optimizer.cpp
@@ -119,6 +119,7 @@ static void addPassesForOptLevel(PassManager& pm) {
         addPass(pm, createInstructionCombiningPass());
         addPass(pm, createCFGSimplificationPass());
         addPass(pm, createPruneEHPass());
+        addPass(pm, createFunctionAttrsPass());
 
 #ifdef USE_METADATA
         if (!disableLangSpecificPasses && !disableGCToStack)
diff --git a/gen/tocall.cpp b/gen/tocall.cpp
index 0a0a5029..fea5e91a 100644
--- a/gen/tocall.cpp
+++ b/gen/tocall.cpp
@@ -416,7 +416,7 @@ DValue* DtoCallFunction(Loc& loc, Type* resulttype, DValue* fnval, Expressions*
             }
             Logger::undent();
             Logger::cout() << "Function type: " << tf->toChars() << '\n';
-            Logger::cout() << "LLVM functype: " << *callable->getType() << '\n';
+            //Logger::cout() << "LLVM functype: " << *callable->getType() << '\n';
         }
 
         size_t n = Argument::dim(tf->parameters);