llvm/unittests/IR/TypesTest.cpp

   1 //===- llvm/unittest/IR/TypesTest.cpp - Type unit tests -------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "llvm/IR/DerivedTypes.h"
  10 #include "llvm/IR/LLVMContext.h"
  11 #include "llvm/IR/TypedPointerType.h"
  12 #include "gtest/gtest.h"
  13 using namespace llvm;
  14
  15 namespace {
  16
  17 TEST(TypesTest, StructType) {
  18   LLVMContext C;
  19
  20   // PR13522
  21   StructType *Struct = StructType::create(C, "FooBar");
  22   EXPECT_EQ("FooBar", Struct->getName());
  23   Struct->setName(Struct->getName().substr(0, 3));
  24   EXPECT_EQ("Foo", Struct->getName());
  25   Struct->setName("");
  26   EXPECT_TRUE(Struct->getName().empty());
  27   EXPECT_FALSE(Struct->hasName());
  28 }
  29
  30 TEST(TypesTest, LayoutIdenticalEmptyStructs) {
  31   LLVMContext C;
  32
  33   StructType *Foo = StructType::create(C, "Foo");
  34   StructType *Bar = StructType::create(C, "Bar");
  35   EXPECT_TRUE(Foo->isLayoutIdentical(Bar));
  36 }
  37
  38 TEST(TypesTest, CopyPointerType) {
  39   LLVMContext COpaquePointers;
  40   COpaquePointers.setOpaquePointers(true);
  41
  42   PointerType *P1 = PointerType::get(COpaquePointers, 1);
  43   EXPECT_TRUE(P1->isOpaque());
  44   PointerType *P1C = PointerType::getWithSamePointeeType(P1, 1);
  45   EXPECT_EQ(P1, P1C);
  46   EXPECT_TRUE(P1C->isOpaque());
  47   PointerType *P1C0 = PointerType::getWithSamePointeeType(P1, 0);
  48   EXPECT_NE(P1, P1C0);
  49   EXPECT_TRUE(P1C0->isOpaque());
  50
  51   LLVMContext CTypedPointers;
  52   CTypedPointers.setOpaquePointers(false);
  53   Type *Int8 = Type::getInt8Ty(CTypedPointers);
  54   PointerType *P2 = PointerType::get(Int8, 1);
  55   EXPECT_FALSE(P2->isOpaque());
  56   PointerType *P2C = PointerType::getWithSamePointeeType(P2, 1);
  57   EXPECT_EQ(P2, P2C);
  58   EXPECT_FALSE(P2C->isOpaque());
  59   PointerType *P2C0 = PointerType::getWithSamePointeeType(P2, 0);
  60   EXPECT_NE(P2, P2C0);
  61   EXPECT_FALSE(P2C0->isOpaque());
  62 }
  63
  64 TEST(TypedPointerType, PrintTest) {
  65   std::string Buffer;
  66   LLVMContext Context;
  67   raw_string_ostream OS(Buffer);
  68
  69   Type *I8Ptr = TypedPointerType::get(Type::getInt8Ty(Context), 0);
  70   I8Ptr->print(OS);
  71   EXPECT_EQ(StringRef(Buffer), ("typedptr(i8, 0)"));
  72 }
  73
  74 }  // end anonymous namespace