@.str = private unnamed_addr constant [13 x i8] c"Hello World\0A\00", align 1 define i32 @main() nounwind { entry: %call = tail call i32 @puts(i8* getelementptr inbounds ([13 x i8]* @.str, i32 0, i32 0)) nounwind tail call void bitcast (void (...)* @SomeOtherFunction to void ()*)() nounwind ret i32 0 } declare i32 @puts(i8* nocapture) nounwind declare void @SomeOtherFunction(...)