Remove the PreserveSource linker mode.

[oota-llvm.git] / unittests / Linker / LinkModulesTest.cpp

diff --git a/unittests/Linker/LinkModulesTest.cpp b/unittests/Linker/LinkModulesTest.cpp
index 9d2d84d193e1877793907ef58b192aed5cbc0d49..a21ee472f34725405addf7f38123d8bd8b822c0f 100644 (file)
--- a/unittests/Linker/LinkModulesTest.cpp
+++ b/unittests/Linker/LinkModulesTest.cpp
@@ -7,11 +7,11 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "llvm/Linker.h"
-#include "llvm/IR/IRBuilder.h"
+#include "llvm/Linker/Linker.h"
 #include "llvm/IR/BasicBlock.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/Function.h"
+#include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/Module.h"
 #include "gtest/gtest.h"
 
@@ -22,11 +22,9 @@ namespace {
 class LinkModuleTest : public testing::Test {
 protected:
   virtual void SetUp() {
-    LLVMContext &Ctx = getGlobalContext();
     M.reset(new Module("MyModule", Ctx));
-    FunctionType *FTy = FunctionType::get(Type::getInt8PtrTy(Ctx),
-                                          Type::getInt32Ty(Ctx),
-                                          false /*=isVarArg*/);
+    FunctionType *FTy = FunctionType::get(
+        Type::getInt8PtrTy(Ctx), Type::getInt32Ty(Ctx), false /*=isVarArg*/);
     F = Function::Create(FTy, Function::ExternalLinkage, "ba_func", M.get());
     F->setCallingConv(CallingConv::C);
 
@@ -38,12 +36,10 @@ protected:
     ArrayType *AT = ArrayType::get(Type::getInt8PtrTy(Ctx), 3);
 
     GV = new GlobalVariable(*M.get(), AT, false /*=isConstant*/,
-                            GlobalValue::InternalLinkage,
-                            0, "switch.bas");
-
+                            GlobalValue::InternalLinkage, nullptr,"switch.bas");
 
     // Global Initializer
-    std::vector<Constant*> Init;
+    std::vector<Constant *> Init;
     Constant *SwitchCase1BA = BlockAddress::get(SwitchCase1BB);
     Init.push_back(SwitchCase1BA);
 
@@ -51,18 +47,17 @@ protected:
     Init.push_back(SwitchCase2BA);
 
     ConstantInt *One = ConstantInt::get(Type::getInt32Ty(Ctx), 1);
-    Constant *OnePtr = ConstantExpr::getCast(Instruction::IntToPtr,
-                                             One, Type::getInt8PtrTy(Ctx));
+    Constant *OnePtr = ConstantExpr::getCast(Instruction::IntToPtr, One,
+                                             Type::getInt8PtrTy(Ctx));
     Init.push_back(OnePtr);
 
     GV->setInitializer(ConstantArray::get(AT, Init));
   }
 
-  virtual void TearDown() {
-    M.reset();
-  }
+  virtual void TearDown() { M.reset(); }
 
-  OwningPtr<Module> M;
+  LLVMContext Ctx;
+  std::unique_ptr<Module> M;
   Function *F;
   GlobalVariable *GV;
   BasicBlock *EntryBB;
@@ -72,10 +67,9 @@ protected:
 };
 
 TEST_F(LinkModuleTest, BlockAddress) {
-  LLVMContext &Ctx = getGlobalContext();
   IRBuilder<> Builder(EntryBB);
 
-  std::vector<Value*> GEPIndices;
+  std::vector<Value *> GEPIndices;
   GEPIndices.push_back(ConstantInt::get(Type::getInt32Ty(Ctx), 0));
   GEPIndices.push_back(F->arg_begin());
 
@@ -93,8 +87,8 @@ TEST_F(LinkModuleTest, BlockAddress) {
   Builder.SetInsertPoint(ExitBB);
   Builder.CreateRet(ConstantPointerNull::get(Type::getInt8PtrTy(Ctx)));
 
-  Module *LinkedModule = new Module("MyModuleLinked", getGlobalContext());
-  Linker::LinkModules(LinkedModule, M.get(), Linker::PreserveSource, 0);
+  Module *LinkedModule = new Module("MyModuleLinked", Ctx);
+  Linker::LinkModules(LinkedModule, M.get());
 
   // Delete the original module.
   M.reset();
@@ -117,7 +111,7 @@ TEST_F(LinkModuleTest, BlockAddress) {
             LinkedModule->getFunction("ba_func"));
   EXPECT_EQ(cast<BlockAddress>(Elem)->getBasicBlock()->getParent(),
             LinkedModule->getFunction("ba_func"));
-  
+
   Elem = Init->getOperand(1);
   ASSERT_TRUE(isa<BlockAddress>(Elem));
   EXPECT_EQ(cast<BlockAddress>(Elem)->getFunction(),
@@ -128,4 +122,39 @@ TEST_F(LinkModuleTest, BlockAddress) {
   delete LinkedModule;
 }
 
+static Module *getInternal(LLVMContext &Ctx) {
+  Module *InternalM = new Module("InternalModule", Ctx);
+  FunctionType *FTy = FunctionType::get(
+      Type::getVoidTy(Ctx), Type::getInt8PtrTy(Ctx), false /*=isVarArgs*/);
+
+  Function *F =
+      Function::Create(FTy, Function::InternalLinkage, "bar", InternalM);
+  F->setCallingConv(CallingConv::C);
+
+  BasicBlock *BB = BasicBlock::Create(Ctx, "", F);
+  IRBuilder<> Builder(BB);
+  Builder.CreateRetVoid();
+
+  StructType *STy = StructType::create(Ctx, PointerType::get(FTy, 0));
+
+  GlobalVariable *GV =
+      new GlobalVariable(*InternalM, STy, false /*=isConstant*/,
+                         GlobalValue::InternalLinkage, nullptr, "g");
+
+  GV->setInitializer(ConstantStruct::get(STy, F));
+  return InternalM;
+}
+
+TEST_F(LinkModuleTest, EmptyModule) {
+  std::unique_ptr<Module> InternalM(getInternal(Ctx));
+  std::unique_ptr<Module> EmptyM(new Module("EmptyModule1", Ctx));
+  Linker::LinkModules(EmptyM.get(), InternalM.get());
+}
+
+TEST_F(LinkModuleTest, EmptyModule2) {
+  std::unique_ptr<Module> InternalM(getInternal(Ctx));
+  std::unique_ptr<Module> EmptyM(new Module("EmptyModule1", Ctx));
+  Linker::LinkModules(InternalM.get(), EmptyM.get());
+}
+
 } // end anonymous namespace