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 "gtest/gtest.h"
12 using namespace llvm;
13 
14 namespace {
15 
16 TEST(TypesTest, StructType) {
17   LLVMContext C;
18 
19   // PR13522
20   StructType *Struct = StructType::create(C, "FooBar");
21   EXPECT_EQ("FooBar", Struct->getName());
22   Struct->setName(Struct->getName().substr(0, 3));
23   EXPECT_EQ("Foo", Struct->getName());
24   Struct->setName("");
25   EXPECT_TRUE(Struct->getName().empty());
26   EXPECT_FALSE(Struct->hasName());
27 }
28 
29 TEST(TypesTest, LayoutIdenticalEmptyStructs) {
30   LLVMContext C;
31 
32   StructType *Foo = StructType::create(C, "Foo");
33   StructType *Bar = StructType::create(C, "Bar");
34   EXPECT_TRUE(Foo->isLayoutIdentical(Bar));
35 }
36 
37 TEST(TypesTest, CopyPointerType) {
38   LLVMContext COpaquePointers;
39   COpaquePointers.enableOpaquePointers();
40 
41   PointerType *P1 = PointerType::get(COpaquePointers, 1);
42   EXPECT_TRUE(P1->isOpaque());
43   PointerType *P1C = PointerType::getWithSamePointeeType(P1, 1);
44   EXPECT_EQ(P1, P1C);
45   EXPECT_TRUE(P1C->isOpaque());
46   PointerType *P1C0 = PointerType::getWithSamePointeeType(P1, 0);
47   EXPECT_NE(P1, P1C0);
48   EXPECT_TRUE(P1C0->isOpaque());
49 
50   LLVMContext CTypedPointers;
51   Type *Int8 = Type::getInt8Ty(CTypedPointers);
52   PointerType *P2 = PointerType::get(Int8, 1);
53   EXPECT_FALSE(P2->isOpaque());
54   PointerType *P2C = PointerType::getWithSamePointeeType(P2, 1);
55   EXPECT_EQ(P2, P2C);
56   EXPECT_FALSE(P2C->isOpaque());
57   PointerType *P2C0 = PointerType::getWithSamePointeeType(P2, 0);
58   EXPECT_NE(P2, P2C0);
59   EXPECT_FALSE(P2C0->isOpaque());
60 }
61 
62 }  // end anonymous namespace
63