[PM] Port NameAnonFunction pass to new pass manager

Summary:
Port the NameAnonFunction pass and add a test.

Depends on D23439.

Reviewers: mehdi_amini

Subscribers: llvm-commits, mehdi_amini

Differential Revision: https://reviews.llvm.org/D23440

llvm-svn: 278509

1 files changed, 19 insertions, 7 deletions

diff --git a/llvm/lib/Transforms/Utils/NameAnonFunctions.cpp b/llvm/lib/Transforms/Utils/NameAnonFunctions.cpp
index 6629ab8..6dc3520 100644
--- a/llvm/lib/Transforms/Utils/NameAnonFunctions.cpp
+++ b/llvm/lib/Transforms/Utils/NameAnonFunctions.cpp
@@ -12,6 +12,8 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/Transforms/Utils/NameAnonFunctions.h"
+
 #include "llvm/ADT/SmallString.h"
 #include "llvm/IR/Module.h"
 #include "llvm/Support/MD5.h"
@@ -76,8 +78,8 @@ bool llvm::nameUnamedFunctions(Module &M) {
 
 namespace {
 
-// Simple pass that provides a name to every anon function.
-class NameAnonFunction : public ModulePass {
+// Legacy pass that provides a name to every anon function.
+class NameAnonFunctionLegacyPass : public ModulePass {
 
 public:
   /// Pass identification, replacement for typeid
@@ -86,19 +88,29 @@ public:
   /// Specify pass name for debug output
   const char *getPassName() const override { return "Name Anon Functions"; }
 
-  explicit NameAnonFunction() : ModulePass(ID) {}
+  explicit NameAnonFunctionLegacyPass() : ModulePass(ID) {}
 
   bool runOnModule(Module &M) override { return nameUnamedFunctions(M); }
 };
-char NameAnonFunction::ID = 0;
+char NameAnonFunctionLegacyPass::ID = 0;
 
 } // anonymous namespace
 
-INITIALIZE_PASS_BEGIN(NameAnonFunction, "name-anon-functions",
+PreservedAnalyses NameAnonFunctionPass::run(Module &M,
+                                            ModuleAnalysisManager &AM) {
+  if (!nameUnamedFunctions(M))
+    return PreservedAnalyses::all();
+
+  return PreservedAnalyses::none();
+}
+
+INITIALIZE_PASS_BEGIN(NameAnonFunctionLegacyPass, "name-anon-functions",
                       "Provide a name to nameless functions", false, false)
-INITIALIZE_PASS_END(NameAnonFunction, "name-anon-functions",
+INITIALIZE_PASS_END(NameAnonFunctionLegacyPass, "name-anon-functions",
                     "Provide a name to nameless functions", false, false)
 
 namespace llvm {
-ModulePass *createNameAnonFunctionPass() { return new NameAnonFunction(); }
+ModulePass *createNameAnonFunctionPass() {
+  return new NameAnonFunctionLegacyPass();
+}
 }