Remove LLVM 8.0.1 files.

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diff --git a/gnu/llvm/examples/HowToUseJIT/HowToUseJIT.cpp b/gnu/llvm/examples/HowToUseJIT/HowToUseJIT.cpp
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--- a/gnu/llvm/examples/HowToUseJIT/HowToUseJIT.cpp
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-//===-- examples/HowToUseJIT/HowToUseJIT.cpp - An example use of the JIT --===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-//  This small program provides an example of how to quickly build a small
-//  module with two functions and execute it with the JIT.
-//
-// Goal:
-//  The goal of this snippet is to create in the memory
-//  the LLVM module consisting of two functions as follow: 
-//
-// int add1(int x) {
-//   return x+1;
-// }
-//
-// int foo() {
-//   return add1(10);
-// }
-//
-// then compile the module via JIT, then execute the `foo'
-// function and return result to a driver, i.e. to a "host program".
-//
-// Some remarks and questions:
-//
-// - could we invoke some code using noname functions too?
-//   e.g. evaluate "foo()+foo()" without fears to introduce
-//   conflict of temporary function name with some real
-//   existing function name?
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/ADT/STLExtras.h"
-#include "llvm/ExecutionEngine/ExecutionEngine.h"
-#include "llvm/ExecutionEngine/GenericValue.h"
-#include "llvm/IR/Argument.h"
-#include "llvm/IR/BasicBlock.h"
-#include "llvm/IR/Constants.h"
-#include "llvm/IR/DerivedTypes.h"
-#include "llvm/IR/Function.h"
-#include "llvm/IR/IRBuilder.h"
-#include "llvm/IR/Instructions.h"
-#include "llvm/IR/LLVMContext.h"
-#include "llvm/IR/Module.h"
-#include "llvm/IR/Type.h"
-#include "llvm/Support/Casting.h"
-#include "llvm/Support/ManagedStatic.h"
-#include "llvm/Support/TargetSelect.h"
-#include "llvm/Support/raw_ostream.h"
-#include <algorithm>
-#include <cassert>
-#include <memory>
-#include <vector>
-
-using namespace llvm;
-
-int main() {
-  InitializeNativeTarget();
-
-  LLVMContext Context;
-  
-  // Create some module to put our function into it.
-  std::unique_ptr<Module> Owner = make_unique<Module>("test", Context);
-  Module *M = Owner.get();
-
-  // Create the add1 function entry and insert this entry into module M.  The
-  // function will have a return type of "int" and take an argument of "int".
-  Function *Add1F =
-    cast<Function>(M->getOrInsertFunction("add1", Type::getInt32Ty(Context),
-                                          Type::getInt32Ty(Context)));
-
-  // Add a basic block to the function. As before, it automatically inserts
-  // because of the last argument.
-  BasicBlock *BB = BasicBlock::Create(Context, "EntryBlock", Add1F);
-
-  // Create a basic block builder with default parameters.  The builder will
-  // automatically append instructions to the basic block `BB'.
-  IRBuilder<> builder(BB);
-
-  // Get pointers to the constant `1'.
-  Value *One = builder.getInt32(1);
-
-  // Get pointers to the integer argument of the add1 function...
-  assert(Add1F->arg_begin() != Add1F->arg_end()); // Make sure there's an arg
-  Argument *ArgX = &*Add1F->arg_begin();          // Get the arg
-  ArgX->setName("AnArg");            // Give it a nice symbolic name for fun.
-
-  // Create the add instruction, inserting it into the end of BB.
-  Value *Add = builder.CreateAdd(One, ArgX);
-
-  // Create the return instruction and add it to the basic block
-  builder.CreateRet(Add);
-
-  // Now, function add1 is ready.
-
-  // Now we're going to create function `foo', which returns an int and takes no
-  // arguments.
-  Function *FooF =
-    cast<Function>(M->getOrInsertFunction("foo", Type::getInt32Ty(Context)));
-
-  // Add a basic block to the FooF function.
-  BB = BasicBlock::Create(Context, "EntryBlock", FooF);
-
-  // Tell the basic block builder to attach itself to the new basic block
-  builder.SetInsertPoint(BB);
-
-  // Get pointer to the constant `10'.
-  Value *Ten = builder.getInt32(10);
-
-  // Pass Ten to the call to Add1F
-  CallInst *Add1CallRes = builder.CreateCall(Add1F, Ten);
-  Add1CallRes->setTailCall(true);
-
-  // Create the return instruction and add it to the basic block.
-  builder.CreateRet(Add1CallRes);
-
-  // Now we create the JIT.
-  ExecutionEngine* EE = EngineBuilder(std::move(Owner)).create();
-
-  outs() << "We just constructed this LLVM module:\n\n" << *M;
-  outs() << "\n\nRunning foo: ";
-  outs().flush();
-
-  // Call the `foo' function with no arguments:
-  std::vector<GenericValue> noargs;
-  GenericValue gv = EE->runFunction(FooF, noargs);
-
-  // Import result of execution:
-  outs() << "Result: " << gv.IntVal << "\n";
-  delete EE;
-  llvm_shutdown();
-  return 0;
-}