Brought LLVM code samples up to LLVM version 11.1.0

Signed-off-by: Prof. Ronald Moore <ronald.moore@h-da.de>

LLVM/cplusplus/KaleidoscopeJIT.h

@@ -45,7 +45,9 @@ public:
   KaleidoscopeJIT()
       : Resolver(createLegacyLookupResolver(
             ES,
-            [this](const std::string &Name) { return findMangledSymbol(Name); },
+            [this](StringRef Name) {
+              return findMangledSymbol(std::string(Name));
+            },
             [](Error Err) { cantFail(std::move(Err), "lookupFlags failed"); })),
         TM(EngineBuilder().selectTarget()), DL(TM->createDataLayout()),
         ObjectLayer(AcknowledgeORCv1Deprecation, ES,

LLVM/cplusplus/ModuleMaker.cpp

 //===- examples/ModuleMaker/ModuleMaker.cpp - Example project ---*- C++ -*-===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //

LLVM/cplusplus/README.md

@@ -11,36 +11,22 @@ This collection was prepared by Prof. R. C. Moore, fbi.h-da.de
 in May 2017 for the Compiler Construction course. No warranty implied or expressed.
 See LICENSE.TXT for the original license.
 
-This version has been prepared for LLVM 4.0 (using Arch Linux in a vagrant box)
-in May 2017.
+This code assumes you have clang and the LLVM library installed -- see below.
 
-This version can be fairly easily adpated to work with LLVM 3.9. 
-It does NOT work with earlier versions of LLVM.
-
-The current version was updated in Summer 2020 and worked with the current LLVM at that time.
-
->
-> **WARNING** In 2021, with LLVM 11, some of this directory works, but some doesn't.
-> 
-> The broken parts will be fixed _soon_.
-> 
+It is generally up-to-date with the latest LLVM release:
+ *  The current version was updated in Summer 2020 and worked with the LLVM 10 at that time.
+ *  Small changes have been made in 2021 to get it to work with LLVM 11.
+ *  LLVM 12 was released in April 2021 (!) and this code has **not** been updated for it (yet),
+    since as of this writing, not even Arch Linux makes this available.  
+ *  However, **be warned**, this code will eventually be updated to LLVM 12! 
 
 
 All of the example files (fibonacci.cpp, ModuleMaker.cpp and toy*.cpp):
-
- - are available in the LLVM source tree, for example by running the
-   following:
-       svn co https://llvm.org/svn/llvm-project/llvm/tags/RELEASE_400/final/
-   or by downloading the whole source tarball, where you will find a directory
-   named "examples", from:
-        http://llvm.org/releases/
-   or directly from
-        http://releases.llvm.org/10.0.0/llvm-10.0.0.src.tar.xz
-
- - the directory structure has been simplified, some files have been renamed,
-   and a new Makefile is provided which is much simpler than the original cmake
-   system (but not guarenteed to work outside Linux).  Test files have also
-   been added. See below. 
+ -  are available in the LLVM source tree, for example at <https://github.com/llvm/llvm-project/releases/tag/llvmorg-11.1.0>.
+ -  the directory structure has been simplified, some files have been renamed,
+    and a new Makefile is provided which is much simpler than the original cmake
+    system (but not guarenteed to work outside Linux).  
+ -  Test files have also been added. See below. 
 
 Still, it should be emphasized that there is nothing really new here -- apart 
 from the packaging, everything here is from the LLVM project!
@@ -100,22 +86,22 @@ https://llvm.org/docs/tutorial/MyFirstLanguageFrontend/index.html
 Building
 =========
 
-(1) Install clang and the llvm tool kit.  You can either compile from source
-    (see http://www.llvm.org/docs/GettingStarted.html - or perhaps better,
-    http://clang.llvm.org/get_started.html) or install binaries that you find
-    elsewhere (you SHOULD get LLVM 10.0.0 - No guarantees are made for older
-    OR NEWER versions!).
+1.  Install clang and the llvm tool kit.  You can either compile from source
+    (see above) or install binaries that you find elsewhere. 
+    In any case, be careful about the verison of LLVM you install (again, see above)!
 
-(2) Run `make` (or perhaps `make clean` and then `make`).
+2.  Run `make` (or perhaps `make clean` and then `make`).
 
-(3) If you wish, run `make tests` to run (almost) all the programs delivered
-    in this colleciton.  The output from `make tests` is very long.
+3.  If you wish, run `make tests` to run (almost) all the programs delivered
+    in this colleciton.  
+    The output from `make tests` is very long.
     Each program can also be tested individually, for example with
     `make testFibonacci` or `make testModuleMaker` or `make test5` 
     (read the Makefile to see all alternatives).  
-    **Note**: `make test9` is broken. We know.  
+    
+    **Note**: `make test9` is broken. This is a known problem.
     That's why it's not included in `make tests`.   
-    Please feel free to fix it. 
+    Please feel free to help me fix it.
 
 Further Reading
 ===============

LLVM/cplusplus/tests/test9.kal

@@ -2,6 +2,6 @@ def fib(x)
   if x < 3 then
     1
   else
-    fib(x-1)+fib(x-2)
+    fib(x-1)+fib(x-2);
 
 fib(10)