Imported Upstream version 5.18.0.207

Former-commit-id: 3b152f462918d427ce18620a2cbe4f8b79650449

external/llvm/unittests/Analysis/TBAATest.cpp

@@ -1,91 +0,0 @@
-//===--- TBAATest.cpp - Mixed TBAA unit tests -----------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Analysis/AliasAnalysisEvaluator.h"
-#include "llvm/Analysis/Passes.h"
-#include "llvm/IR/Constants.h"
-#include "llvm/IR/Instructions.h"
-#include "llvm/IR/LLVMContext.h"
-#include "llvm/IR/LegacyPassManager.h"
-#include "llvm/IR/MDBuilder.h"
-#include "llvm/IR/Module.h"
-#include "llvm/IR/Verifier.h"
-#include "llvm/Support/CommandLine.h"
-#include "gtest/gtest.h"
-
-namespace llvm {
-namespace {
-
-class TBAATest : public testing::Test {
-protected:
-  TBAATest() : M("TBAATest", C), MD(C) {}
-
-  LLVMContext C;
-  Module M;
-  MDBuilder MD;
-};
-
-static StoreInst *getFunctionWithSingleStore(Module *M, StringRef Name) {
-  auto &C = M->getContext();
-  FunctionType *FTy = FunctionType::get(Type::getVoidTy(C), {});
-  auto *F = cast<Function>(M->getOrInsertFunction(Name, FTy));
-  auto *BB = BasicBlock::Create(C, "entry", F);
-  auto *IntType = Type::getInt32Ty(C);
-  auto *PtrType = Type::getInt32PtrTy(C);
-  auto *SI = new StoreInst(ConstantInt::get(IntType, 42),
-                           ConstantPointerNull::get(PtrType), BB);
-  ReturnInst::Create(C, nullptr, BB);
-
-  return SI;
-}
-
-TEST_F(TBAATest, checkVerifierBehaviorForOldTBAA) {
-  auto *SI = getFunctionWithSingleStore(&M, "f1");
-  auto *F = SI->getFunction();
-
-  // C++ unit test case to avoid going through the auto upgrade logic.
-  auto *RootMD = MD.createTBAARoot("Simple C/C++ TBAA");
-  auto *MD1 = MD.createTBAANode("omnipotent char", RootMD);
-  auto *MD2 = MD.createTBAANode("int", MD1);
-  SI->setMetadata(LLVMContext::MD_tbaa, MD2);
-
-  SmallVector<char, 0> ErrorMsg;
-  raw_svector_ostream Outs(ErrorMsg);
-
-  StringRef ExpectedFailureMsg(
-      "Old-style TBAA is no longer allowed, use struct-path TBAA instead");
-
-  EXPECT_TRUE(verifyFunction(*F, &Outs));
-  EXPECT_TRUE(StringRef(ErrorMsg.begin(), ErrorMsg.size())
-                  .startswith(ExpectedFailureMsg));
-}
-
-TEST_F(TBAATest, checkTBAAMerging) {
-  auto *SI = getFunctionWithSingleStore(&M, "f2");
-  auto *F = SI->getFunction();
-
-  auto *RootMD = MD.createTBAARoot("tbaa-root");
-  auto *MD1 = MD.createTBAANode("scalar-a", RootMD);
-  auto *StructTag1 = MD.createTBAAStructTagNode(MD1, MD1, 0);
-  auto *MD2 = MD.createTBAANode("scalar-b", RootMD);
-  auto *StructTag2 = MD.createTBAAStructTagNode(MD2, MD2, 0);
-
-  auto *GenericMD = MDNode::getMostGenericTBAA(StructTag1, StructTag2);
-
-  EXPECT_EQ(GenericMD, nullptr);
-
-  // Despite GenericMD being nullptr, we expect the setMetadata call to be well
-  // defined and produce a well-formed function.
-  SI->setMetadata(LLVMContext::MD_tbaa, GenericMD);
-
-  EXPECT_TRUE(!verifyFunction(*F));
-}
-
-} // end anonymous namspace
-} // end llvm namespace