1 files changed, 52 insertions, 46 deletions

diff --git a/llvm/examples/Kaleidoscope/Orc/initial/toy.cpp b/llvm/examples/Kaleidoscope/Orc/initial/toy.cpp
index c01aff2f99b..3bf2fb6dd9c 100644
--- a/llvm/examples/Kaleidoscope/Orc/initial/toy.cpp
+++ b/llvm/examples/Kaleidoscope/Orc/initial/toy.cpp
@@ -1,4 +1,3 @@
-
 #include "llvm/Analysis/Passes.h"
 #include "llvm/ExecutionEngine/Orc/CompileUtils.h"
 #include "llvm/ExecutionEngine/Orc/IRCompileLayer.h"
@@ -7,8 +6,8 @@
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/IRBuilder.h"
-#include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/LegacyPassManager.h"
+#include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/Verifier.h"
 #include "llvm/Support/TargetSelect.h"
@@ -682,13 +681,18 @@ std::string MakeLegalFunctionName(std::string Name)
 
 class SessionContext {
 public:
-  SessionContext(LLVMContext &C) : Context(C) {}
+  SessionContext(LLVMContext &C)
+    : Context(C), TM(EngineBuilder().selectTarget()) {}
   LLVMContext& getLLVMContext() const { return Context; }
+  TargetMachine& getTarget() { return *TM; }
   void addPrototypeAST(std::unique_ptr<PrototypeAST> P);
   PrototypeAST* getPrototypeAST(const std::string &Name);
 private:
   typedef std::map<std::string, std::unique_ptr<PrototypeAST>> PrototypeMap;
+  
   LLVMContext &Context;
+  std::unique_ptr<TargetMachine> TM;
+      
   PrototypeMap Prototypes;
 };
 
@@ -710,7 +714,9 @@ public:
     : Session(S),
       M(new Module(GenerateUniqueName("jit_module_"),
                    Session.getLLVMContext())),
-      Builder(Session.getLLVMContext()) {}
+      Builder(Session.getLLVMContext()) {
+    M->setDataLayout(Session.getTarget().getDataLayout());
+  }
 
   SessionContext& getSession() { return Session; }
   Module& getM() const { return *M; }
@@ -1126,75 +1132,75 @@ Function *FunctionAST::IRGen(IRGenContext &C) const {
 // Top-Level parsing and JIT Driver
 //===----------------------------------------------------------------------===//
 
+static std::unique_ptr<llvm::Module> IRGen(SessionContext &S,
+                                           const FunctionAST &F) {
+  IRGenContext C(S);
+  auto LF = F.IRGen(C);
+  if (!LF)
+    return nullptr;
+#ifndef MINIMAL_STDERR_OUTPUT
+  fprintf(stderr, "Read function definition:");
+  LF->dump();
+#endif
+  return C.takeM();
+}
+
+template <typename T>
+static std::vector<T> singletonSet(T t) {
+  std::vector<T> Vec;
+  Vec.push_back(std::move(t));
+  return Vec;
+}
+
 class KaleidoscopeJIT {
 public:
   typedef ObjectLinkingLayer<> ObjLayerT;
   typedef IRCompileLayer<ObjLayerT> CompileLayerT;
-
   typedef CompileLayerT::ModuleSetHandleT ModuleHandleT;
 
-  KaleidoscopeJIT()
-    : TM(EngineBuilder().selectTarget()),
-      Mang(TM->getDataLayout()),
-      CompileLayer(ObjectLayer, SimpleCompiler(*TM)) {}
+  KaleidoscopeJIT(SessionContext &Session)
+    : Mang(Session.getTarget().getDataLayout()),
+      CompileLayer(ObjectLayer, SimpleCompiler(Session.getTarget())) {}
 
-  ModuleHandleT addModule(std::unique_ptr<Module> M) {
-    if (!M->getDataLayout())
-      M->setDataLayout(TM->getDataLayout());
-
-    // The LazyEmitLayer takes lists of modules, rather than single modules, so
-    // we'll just build a single-element list.
-    std::vector<std::unique_ptr<Module>> S;
-    S.push_back(std::move(M));
+  std::string mangle(const std::string &Name) {
+    std::string MangledName;
+    {
+      raw_string_ostream MangledNameStream(MangledName);
+      Mang.getNameWithPrefix(MangledNameStream, Name);
+    }
+    return MangledName;
+  }
 
+  ModuleHandleT addModule(std::unique_ptr<Module> M) {
     // We need a memory manager to allocate memory and resolve symbols for this
-    // new module. Create one that resolves symbols by looking back into the JIT.
+    // new module. Create one that resolves symbols by looking back into the
+    // JIT.
     auto MM = createLookasideRTDyldMM<SectionMemoryManager>(
                 [&](const std::string &S) {
-                  return findMangledSymbol(S).getAddress();
+                  return findSymbol(S).getAddress();
                 },
                 [](const std::string &S) { return 0; } );
 
-    return CompileLayer.addModuleSet(std::move(S), std::move(MM));
+    return CompileLayer.addModuleSet(singletonSet(std::move(M)), std::move(MM));
   }
 
   void removeModule(ModuleHandleT H) { CompileLayer.removeModuleSet(H); }
 
-  JITSymbol findMangledSymbol(const std::string &Name) {
-    return CompileLayer.findSymbol(Name, false);
+  JITSymbol findSymbol(const std::string &Name) {
+    return CompileLayer.findSymbol(Name, true);
   }
 
-  JITSymbol findSymbol(const std::string Name) {
-    std::string MangledName;
-    {
-      raw_string_ostream MangledNameStream(MangledName);
-      Mang.getNameWithPrefix(MangledNameStream, Name);
-    }
-    return findMangledSymbol(MangledName);
+  JITSymbol findUnmangledSymbol(const std::string Name) {
+    return findSymbol(mangle(Name));
   }
 
 private:
 
-  std::unique_ptr<TargetMachine> TM;
   Mangler Mang;
-
   ObjLayerT ObjectLayer;
   CompileLayerT CompileLayer;
 };
 
-static std::unique_ptr<llvm::Module> IRGen(SessionContext &S,
-                                           const FunctionAST &F) {
-  IRGenContext C(S);
-  auto LF = F.IRGen(C);
-  if (!LF)
-    return nullptr;
-#ifndef MINIMAL_STDERR_OUTPUT
-  fprintf(stderr, "Read function definition:");
-  LF->dump();
-#endif
-  return C.takeM();
-}
-
 static void HandleDefinition(SessionContext &S, KaleidoscopeJIT &J) {
   if (auto F = ParseDefinition()) {
     if (auto M = IRGen(S, *F)) {
@@ -1230,7 +1236,7 @@ static void HandleTopLevelExpression(SessionContext &S, KaleidoscopeJIT &J) {
       auto H = J.addModule(C.takeM());
 
       // Get the address of the JIT'd function in memory.
-      auto ExprSymbol = J.findSymbol("__anon_expr");
+      auto ExprSymbol = J.findUnmangledSymbol("__anon_expr");
       
       // Cast it to the right type (takes no arguments, returns a double) so we
       // can call it as a native function.
@@ -1252,8 +1258,8 @@ static void HandleTopLevelExpression(SessionContext &S, KaleidoscopeJIT &J) {
 
 /// top ::= definition | external | expression | ';'
 static void MainLoop() {
-  KaleidoscopeJIT J;
   SessionContext S(getGlobalContext());
+  KaleidoscopeJIT J(S);
 
   while (1) {
     switch (CurTok) {