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, TargetExtType) {
  39   LLVMContext Context;
  40   Type *A = TargetExtType::get(Context, "typea");
  41   Type *Aparam = TargetExtType::get(Context, "typea", {}, {0, 1});
  42   Type *Aparam2 = TargetExtType::get(Context, "typea", {}, {0, 1});
  43   // Opaque types with same parameters are identical...
  44   EXPECT_EQ(Aparam, Aparam2);
  45   // ... but just having the same name is not enough.
  46   EXPECT_NE(A, Aparam);
  47 }
  48
  49 TEST(TypedPointerType, PrintTest) {
  50   std::string Buffer;
  51   LLVMContext Context;
  52   raw_string_ostream OS(Buffer);
  53
  54   Type *I8Ptr = TypedPointerType::get(Type::getInt8Ty(Context), 0);
  55   I8Ptr->print(OS);
  56   EXPECT_EQ(StringRef(Buffer), ("typedptr(i8, 0)"));
  57 }
  58
  59 }  // end anonymous namespace