4 files changed, 107 insertions, 0 deletions
diff --git a/gnu/llvm/lib/Transforms/Hello/CMakeLists.txt b/gnu/llvm/lib/Transforms/Hello/CMakeLists.txt
new file mode 100644
index 00000000000..e0b81907c7f
--- /dev/null
+++ b/gnu/llvm/lib/Transforms/Hello/CMakeLists.txt
@@ -0,0 +1,18 @@
+# If we don't need RTTI or EH, there's no reason to export anything
+# from the hello plugin.
+if( NOT LLVM_REQUIRES_RTTI )
+  if( NOT LLVM_REQUIRES_EH )
+    set(LLVM_EXPORTED_SYMBOL_FILE ${CMAKE_CURRENT_SOURCE_DIR}/Hello.exports)
+  endif()
+endif()
+
+if(WIN32 OR CYGWIN)
+  set(LLVM_LINK_COMPONENTS Core Support)
+endif()
+
+add_llvm_loadable_module( LLVMHello
+  Hello.cpp
+
+  DEPENDS
+  intrinsics_gen
+  )
diff --git a/gnu/llvm/lib/Transforms/Hello/Hello.cpp b/gnu/llvm/lib/Transforms/Hello/Hello.cpp
new file mode 100644
index 00000000000..29b9bb8a94e
--- /dev/null
+++ b/gnu/llvm/lib/Transforms/Hello/Hello.cpp
@@ -0,0 +1,65 @@
+//===- 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)");
diff --git a/gnu/llvm/lib/Transforms/Hello/Hello.exports b/gnu/llvm/lib/Transforms/Hello/Hello.exports
new file mode 100644
index 00000000000..e69de29bb2d
--- /dev/null
+++ b/gnu/llvm/lib/Transforms/Hello/Hello.exports
diff --git a/gnu/llvm/lib/Transforms/Hello/Makefile b/gnu/llvm/lib/Transforms/Hello/Makefile
new file mode 100644
index 00000000000..f1e31489d3c
--- /dev/null
+++ b/gnu/llvm/lib/Transforms/Hello/Makefile
@@ -0,0 +1,24 @@
+##===- lib/Transforms/Hello/Makefile -----------------------*- Makefile -*-===##
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+
+LEVEL = ../../..
+LIBRARYNAME = LLVMHello
+LOADABLE_MODULE = 1
+USEDLIBS =
+
+# If we don't need RTTI or EH, there's no reason to export anything
+# from the hello plugin.
+ifneq ($(REQUIRES_RTTI), 1)
+ifneq ($(REQUIRES_EH), 1)
+EXPORTED_SYMBOL_FILE = $(PROJ_SRC_DIR)/Hello.exports
+endif
+endif
+
+include $(LEVEL)/Makefile.common
+