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diff --git a/gnu/llvm/lib/Transforms/Hello/Hello.cpp b/gnu/llvm/lib/Transforms/Hello/Hello.cpp
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index 00000000000..29b9bb8a94e
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+++ b/gnu/llvm/lib/Transforms/Hello/Hello.cpp
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+//===- Hello.cpp - Example code from "Writing an LLVM Pass" ---------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements two versions of the LLVM "Hello World" pass described
+// in docs/WritingAnLLVMPass.html
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ADT/Statistic.h"
+#include "llvm/IR/Function.h"
+#include "llvm/Pass.h"
+#include "llvm/Support/raw_ostream.h"
+using namespace llvm;
+
+#define DEBUG_TYPE "hello"
+
+STATISTIC(HelloCounter, "Counts number of functions greeted");
+
+namespace {
+  // Hello - The first implementation, without getAnalysisUsage.
+  struct Hello : public FunctionPass {
+    static char ID; // Pass identification, replacement for typeid
+    Hello() : FunctionPass(ID) {}
+
+    bool runOnFunction(Function &F) override {
+      ++HelloCounter;
+      errs() << "Hello: ";
+      errs().write_escaped(F.getName()) << '\n';
+      return false;
+    }
+  };
+}
+
+char Hello::ID = 0;
+static RegisterPass<Hello> X("hello", "Hello World Pass");
+
+namespace {
+  // Hello2 - The second implementation with getAnalysisUsage implemented.
+  struct Hello2 : public FunctionPass {
+    static char ID; // Pass identification, replacement for typeid
+    Hello2() : FunctionPass(ID) {}
+
+    bool runOnFunction(Function &F) override {
+      ++HelloCounter;
+      errs() << "Hello: ";
+      errs().write_escaped(F.getName()) << '\n';
+      return false;
+    }
+
+    // We don't modify the program, so we preserve all analyses.
+    void getAnalysisUsage(AnalysisUsage &AU) const override {
+      AU.setPreservesAll();
+    }
+  };
+}
+
+char Hello2::ID = 0;
+static RegisterPass<Hello2>
+Y("hello2", "Hello World Pass (with getAnalysisUsage implemented)");