Revert "Move copying of global initializers below the cloning of functions."

This would cause internal symbols that are only referenced by global initializers to be removed.

This reverts commit 194219.

llvm-svn: 194304

1 files changed, 0 insertions, 131 deletions

diff --git a/llvm/unittests/Linker/LinkModulesTest.cpp b/llvm/unittests/Linker/LinkModulesTest.cpp
deleted file mode 100644
index 9d2d84d193e..00000000000
--- a/llvm/unittests/Linker/LinkModulesTest.cpp
+++ /dev/null
@@ -1,131 +0,0 @@
-//===- llvm/unittest/Linker/LinkModulesTest.cpp - IRBuilder tests ---------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Linker.h"
-#include "llvm/IR/IRBuilder.h"
-#include "llvm/IR/BasicBlock.h"
-#include "llvm/IR/DataLayout.h"
-#include "llvm/IR/Function.h"
-#include "llvm/IR/Module.h"
-#include "gtest/gtest.h"
-
-using namespace llvm;
-
-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*/);
-    F = Function::Create(FTy, Function::ExternalLinkage, "ba_func", M.get());
-    F->setCallingConv(CallingConv::C);
-
-    EntryBB = BasicBlock::Create(Ctx, "entry", F);
-    SwitchCase1BB = BasicBlock::Create(Ctx, "switch.case.1", F);
-    SwitchCase2BB = BasicBlock::Create(Ctx, "switch.case.2", F);
-    ExitBB = BasicBlock::Create(Ctx, "exit", F);
-
-    ArrayType *AT = ArrayType::get(Type::getInt8PtrTy(Ctx), 3);
-
-    GV = new GlobalVariable(*M.get(), AT, false /*=isConstant*/,
-                            GlobalValue::InternalLinkage,
-                            0, "switch.bas");
-
-
-    // Global Initializer
-    std::vector<Constant*> Init;
-    Constant *SwitchCase1BA = BlockAddress::get(SwitchCase1BB);
-    Init.push_back(SwitchCase1BA);
-
-    Constant *SwitchCase2BA = BlockAddress::get(SwitchCase2BB);
-    Init.push_back(SwitchCase2BA);
-
-    ConstantInt *One = ConstantInt::get(Type::getInt32Ty(Ctx), 1);
-    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();
-  }
-
-  OwningPtr<Module> M;
-  Function *F;
-  GlobalVariable *GV;
-  BasicBlock *EntryBB;
-  BasicBlock *SwitchCase1BB;
-  BasicBlock *SwitchCase2BB;
-  BasicBlock *ExitBB;
-};
-
-TEST_F(LinkModuleTest, BlockAddress) {
-  LLVMContext &Ctx = getGlobalContext();
-  IRBuilder<> Builder(EntryBB);
-
-  std::vector<Value*> GEPIndices;
-  GEPIndices.push_back(ConstantInt::get(Type::getInt32Ty(Ctx), 0));
-  GEPIndices.push_back(F->arg_begin());
-
-  Value *GEP = Builder.CreateGEP(GV, GEPIndices, "switch.gep");
-  Value *Load = Builder.CreateLoad(GEP, "switch.load");
-
-  Builder.CreateRet(Load);
-
-  Builder.SetInsertPoint(SwitchCase1BB);
-  Builder.CreateBr(ExitBB);
-
-  Builder.SetInsertPoint(SwitchCase2BB);
-  Builder.CreateBr(ExitBB);
-
-  Builder.SetInsertPoint(ExitBB);
-  Builder.CreateRet(ConstantPointerNull::get(Type::getInt8PtrTy(Ctx)));
-
-  Module *LinkedModule = new Module("MyModuleLinked", getGlobalContext());
-  Linker::LinkModules(LinkedModule, M.get(), Linker::PreserveSource, 0);
-
-  // Delete the original module.
-  M.reset();
-
-  // Check that the global "@switch.bas" is well-formed.
-  const GlobalVariable *LinkedGV = LinkedModule->getNamedGlobal("switch.bas");
-  const Constant *Init = LinkedGV->getInitializer();
-
-  // @switch.bas = internal global [3 x i8*]
-  //   [i8* blockaddress(@ba_func, %switch.case.1),
-  //    i8* blockaddress(@ba_func, %switch.case.2),
-  //    i8* inttoptr (i32 1 to i8*)]
-
-  ArrayType *AT = ArrayType::get(Type::getInt8PtrTy(Ctx), 3);
-  EXPECT_EQ(AT, Init->getType());
-
-  Value *Elem = Init->getOperand(0);
-  ASSERT_TRUE(isa<BlockAddress>(Elem));
-  EXPECT_EQ(cast<BlockAddress>(Elem)->getFunction(),
-            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(),
-            LinkedModule->getFunction("ba_func"));
-  EXPECT_EQ(cast<BlockAddress>(Elem)->getBasicBlock()->getParent(),
-            LinkedModule->getFunction("ba_func"));
-
-  delete LinkedModule;
-}
-
-} // end anonymous namespace