[MCJIT] Unique-ptrify the RTDyldMemoryManager member of MCJIT. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223183 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/ExecutionEngine/ExecutionEngine.h

@@ -138,10 +138,11 @@ protected:
   /// getMemoryforGV - Allocate memory for a global variable.
   virtual char *getMemoryForGV(const GlobalVariable *GV);
 
-  static ExecutionEngine *(*MCJITCtor)(std::unique_ptr<Module> M,
-                                       std::string *ErrorStr,
-                                       RTDyldMemoryManager *MCJMM,
-                                       std::unique_ptr<TargetMachine> TM);
+  static ExecutionEngine *(*MCJITCtor)(
+                                     std::unique_ptr<Module> M,
+                                     std::string *ErrorStr,
+                                     std::unique_ptr<RTDyldMemoryManager> MCJMM,
+                                     std::unique_ptr<TargetMachine> TM);
   static ExecutionEngine *(*InterpCtor)(std::unique_ptr<Module> M,
                                         std::string *ErrorStr);
 
@@ -492,7 +493,7 @@ private:
   EngineKind::Kind WhichEngine;
   std::string *ErrorStr;
   CodeGenOpt::Level OptLevel;
-  RTDyldMemoryManager *MCJMM;
+  std::unique_ptr<RTDyldMemoryManager> MCJMM;
   TargetOptions Options;
   Reloc::Model RelocModel;
   CodeModel::Model CMModel;
@@ -506,9 +507,10 @@ private:
 
 public:
   /// Constructor for EngineBuilder.
-  EngineBuilder(std::unique_ptr<Module> M) : M(std::move(M)) {
-    InitEngine();
-  }
+  EngineBuilder(std::unique_ptr<Module> M);
+
+  // Out-of-line since we don't have the def'n of RTDyldMemoryManager here.
+  ~EngineBuilder();
 
   /// setEngineKind - Controls whether the user wants the interpreter, the JIT,
   /// or whichever engine works.  This option defaults to EngineKind::Either.
@@ -523,10 +525,7 @@ public:
   /// to create anything other than MCJIT will cause a runtime error. If create()
   /// is called and is successful, the created engine takes ownership of the
   /// memory manager. This option defaults to NULL.
-  EngineBuilder &setMCJITMemoryManager(RTDyldMemoryManager *mcjmm) {
-    MCJMM = mcjmm;
-    return *this;
-  }
+  EngineBuilder &setMCJITMemoryManager(std::unique_ptr<RTDyldMemoryManager> mcjmm);
 
   /// setErrorStr - Set the error string to write to on error.  This option
   /// defaults to NULL.

lib/ExecutionEngine/ExecutionEngine.cpp

@@ -44,7 +44,8 @@ STATISTIC(NumGlobals  , "Number of global vars initialized");
 
 ExecutionEngine *(*ExecutionEngine::MCJITCtor)(
     std::unique_ptr<Module> M, std::string *ErrorStr,
-    RTDyldMemoryManager *MCJMM, std::unique_ptr<TargetMachine> TM) = nullptr;
+    std::unique_ptr<RTDyldMemoryManager> MCJMM,
+    std::unique_ptr<TargetMachine> TM) = nullptr;
 ExecutionEngine *(*ExecutionEngine::InterpCtor)(std::unique_ptr<Module> M,
                                                 std::string *ErrorStr) =nullptr;
 
@@ -392,6 +393,19 @@ int ExecutionEngine::runFunctionAsMain(Function *Fn,
   return runFunction(Fn, GVArgs).IntVal.getZExtValue();
 }
 
+EngineBuilder::EngineBuilder(std::unique_ptr<Module> M)
+  : M(std::move(M)), MCJMM(nullptr) {
+  InitEngine();
+}
+
+EngineBuilder::~EngineBuilder() {}
+
+EngineBuilder &EngineBuilder::setMCJITMemoryManager(
+                                   std::unique_ptr<RTDyldMemoryManager> mcjmm) {
+  MCJMM = std::move(mcjmm);
+  return *this;
+}
+
 void EngineBuilder::InitEngine() {
   WhichEngine = EngineKind::Either;
   ErrorStr = nullptr;
@@ -443,7 +457,7 @@ ExecutionEngine *EngineBuilder::create(TargetMachine *TM) {
 
     ExecutionEngine *EE = nullptr;
     if (ExecutionEngine::MCJITCtor)
-      EE = ExecutionEngine::MCJITCtor(std::move(M), ErrorStr, MCJMM,
+      EE = ExecutionEngine::MCJITCtor(std::move(M), ErrorStr, std::move(MCJMM),
                                       std::move(TheTM));
     if (EE) {
       EE->setVerifyModules(VerifyModules);

lib/ExecutionEngine/ExecutionEngineBindings.cpp

@@ -188,7 +188,8 @@ LLVMBool LLVMCreateMCJITCompilerForModule(
          .setCodeModel(unwrap(options.CodeModel))
          .setTargetOptions(targetOptions);
   if (options.MCJMM)
-    builder.setMCJITMemoryManager(unwrap(options.MCJMM));
+    builder.setMCJITMemoryManager(
+      std::unique_ptr<RTDyldMemoryManager>(unwrap(options.MCJMM)));
   if (ExecutionEngine *JIT = builder.create()) {
     *OutJIT = wrap(JIT);
     return 0;

lib/ExecutionEngine/MCJIT/MCJIT.cpp

@@ -45,21 +45,24 @@ extern "C" void LLVMLinkInMCJIT() {
 
 ExecutionEngine *MCJIT::createJIT(std::unique_ptr<Module> M,
                                   std::string *ErrorStr,
-                                  RTDyldMemoryManager *MemMgr,
+                                  std::unique_ptr<RTDyldMemoryManager> MemMgr,
                                   std::unique_ptr<TargetMachine> TM) {
   // Try to register the program as a source of symbols to resolve against.
   //
   // FIXME: Don't do this here.
   sys::DynamicLibrary::LoadLibraryPermanently(nullptr, nullptr);
 
-  return new MCJIT(std::move(M), std::move(TM),
-                   MemMgr ? MemMgr : new SectionMemoryManager());
+  std::unique_ptr<RTDyldMemoryManager> MM = std::move(MemMgr);
+  if (!MM)
+    MM = std::unique_ptr<SectionMemoryManager>(new SectionMemoryManager());
+
+  return new MCJIT(std::move(M), std::move(TM), std::move(MM));
 }
 
 MCJIT::MCJIT(std::unique_ptr<Module> M, std::unique_ptr<TargetMachine> tm,
-             RTDyldMemoryManager *MM)
+             std::unique_ptr<RTDyldMemoryManager> MM)
     : ExecutionEngine(std::move(M)), TM(std::move(tm)), Ctx(nullptr),
-      MemMgr(this, MM), Dyld(&MemMgr), ObjCache(nullptr) {
+      MemMgr(this, std::move(MM)), Dyld(&MemMgr), ObjCache(nullptr) {
   // FIXME: We are managing our modules, so we do not want the base class
   // ExecutionEngine to manage them as well. To avoid double destruction
   // of the first (and only) module added in ExecutionEngine constructor

lib/ExecutionEngine/MCJIT/MCJIT.h

@@ -28,8 +28,9 @@ class MCJIT;
 // to that object.
 class LinkingMemoryManager : public RTDyldMemoryManager {
 public:
-  LinkingMemoryManager(MCJIT *Parent, RTDyldMemoryManager *MM)
-    : ParentEngine(Parent), ClientMM(MM) {}
+  LinkingMemoryManager(MCJIT *Parent,
+                       std::unique_ptr<RTDyldMemoryManager> MM)
+    : ParentEngine(Parent), ClientMM(std::move(MM)) {}
 
   uint64_t getSymbolAddress(const std::string &Name) override;
 
@@ -102,7 +103,7 @@ private:
 
 class MCJIT : public ExecutionEngine {
   MCJIT(std::unique_ptr<Module> M, std::unique_ptr<TargetMachine> tm,
-        RTDyldMemoryManager *MemMgr);
+        std::unique_ptr<RTDyldMemoryManager> MemMgr);
 
   typedef llvm::SmallPtrSet<Module *, 4> ModulePtrSet;
 
@@ -325,7 +326,7 @@ public:
 
   static ExecutionEngine *createJIT(std::unique_ptr<Module> M,
                                     std::string *ErrorStr,
-                                    RTDyldMemoryManager *MemMgr,
+                                    std::unique_ptr<RTDyldMemoryManager> MemMgr,
                                     std::unique_ptr<TargetMachine> TM);
 
   // @}

tools/lli/lli.cpp

@@ -433,7 +433,11 @@ int main(int argc, char **argv, char * const *envp) {
       RTDyldMM = new RemoteMemoryManager();
     else
       RTDyldMM = new SectionMemoryManager();
-    builder.setMCJITMemoryManager(RTDyldMM);
+
+    // Deliberately construct a temp std::unique_ptr to pass in. Do not null out
+    // RTDyldMM: We still use it below, even though we don't own it.
+    builder.setMCJITMemoryManager(
+      std::unique_ptr<RTDyldMemoryManager>(RTDyldMM));
   } else if (RemoteMCJIT) {
     errs() << "error: Remote process execution does not work with the "
               "interpreter.\n";

unittests/ExecutionEngine/MCJIT/MCJITObjectCacheTest.cpp

@@ -163,7 +163,7 @@ TEST_F(MCJITObjectCacheTest, VerifyLoadFromCache) {
   TheJIT.reset();
 
   // Create a new memory manager.
-  MM = new SectionMemoryManager;
+  MM.reset(new SectionMemoryManager());
 
   // Create a new module and save it. Use a different return code so we can
   // tell if MCJIT compiled this module or used the cache.
@@ -197,7 +197,7 @@ TEST_F(MCJITObjectCacheTest, VerifyNonLoadFromCache) {
   TheJIT.reset();
 
   // Create a new memory manager.
-  MM = new SectionMemoryManager;
+  MM.reset(new SectionMemoryManager());
 
   // Create a new module and save it. Use a different return code so we can
   // tell if MCJIT compiled this module or used the cache. Note that we use

unittests/ExecutionEngine/MCJIT/MCJITTestBase.h

@@ -325,7 +325,7 @@ protected:
     EngineBuilder EB(std::move(M));
     std::string Error;
     TheJIT.reset(EB.setEngineKind(EngineKind::JIT)
-                 .setMCJITMemoryManager(MM)
+                 .setMCJITMemoryManager(std::move(MM))
                  .setErrorStr(&Error)
                  .setOptLevel(CodeGenOpt::None)
                  .setCodeModel(CodeModel::JITDefault)
@@ -344,7 +344,7 @@ protected:
   StringRef MArch;
   SmallVector<std::string, 1> MAttrs;
   std::unique_ptr<ExecutionEngine> TheJIT;
-  RTDyldMemoryManager *MM;
+  std::unique_ptr<RTDyldMemoryManager> MM;
 
   std::unique_ptr<Module> M;
 };