| //===- llvm/unittest/ADT/PointerEmbeddedIntTest.cpp -----------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/ADT/PointerEmbeddedInt.h" |
| #include "gtest/gtest.h" |
| using namespace llvm; |
| |
| namespace { |
| |
| TEST(PointerEmbeddedIntTest, Basic) { |
| PointerEmbeddedInt<int, CHAR_BIT> I = 42, J = 43; |
| |
| EXPECT_EQ(42, I); |
| EXPECT_EQ(43, I + 1); |
| EXPECT_EQ(sizeof(uintptr_t) * CHAR_BIT - CHAR_BIT, |
| PointerLikeTypeTraits<decltype(I)>::NumLowBitsAvailable); |
| |
| EXPECT_FALSE(I == J); |
| EXPECT_TRUE(I != J); |
| EXPECT_TRUE(I < J); |
| EXPECT_FALSE(I > J); |
| EXPECT_TRUE(I <= J); |
| EXPECT_FALSE(I >= J); |
| |
| EXPECT_FALSE(I == 43); |
| EXPECT_TRUE(I != 43); |
| EXPECT_TRUE(I < 43); |
| EXPECT_FALSE(I > 43); |
| EXPECT_TRUE(I <= 43); |
| EXPECT_FALSE(I >= 43); |
| |
| EXPECT_FALSE(42 == J); |
| EXPECT_TRUE(42 != J); |
| EXPECT_TRUE(42 < J); |
| EXPECT_FALSE(42 > J); |
| EXPECT_TRUE(42 <= J); |
| EXPECT_FALSE(42 >= J); |
| } |
| |
| TEST(PointerEmbeddedIntTest, intptr_t) { |
| PointerEmbeddedInt<intptr_t, CHAR_BIT> IPos = 42, INeg = -42; |
| EXPECT_EQ(42, IPos); |
| EXPECT_EQ(-42, INeg); |
| |
| PointerEmbeddedInt<uintptr_t, CHAR_BIT> U = 42, USaturated = 255; |
| EXPECT_EQ(42U, U); |
| EXPECT_EQ(255U, USaturated); |
| |
| PointerEmbeddedInt<intptr_t, std::numeric_limits<intptr_t>::digits> |
| IMax = std::numeric_limits<intptr_t>::max() >> 1, |
| IMin = std::numeric_limits<intptr_t>::min() >> 1; |
| EXPECT_EQ(std::numeric_limits<intptr_t>::max() >> 1, IMax); |
| EXPECT_EQ(std::numeric_limits<intptr_t>::min() >> 1, IMin); |
| |
| PointerEmbeddedInt<uintptr_t, std::numeric_limits<uintptr_t>::digits - 1> |
| UMax = std::numeric_limits<uintptr_t>::max() >> 1, |
| UMin = std::numeric_limits<uintptr_t>::min() >> 1; |
| EXPECT_EQ(std::numeric_limits<uintptr_t>::max() >> 1, UMax); |
| EXPECT_EQ(std::numeric_limits<uintptr_t>::min() >> 1, UMin); |
| } |
| |
| TEST(PointerEmbeddedIntTest, PointerLikeTypeTraits) { |
| PointerEmbeddedInt<int, CHAR_BIT> I = 42; |
| using ITraits = PointerLikeTypeTraits<decltype(I)>; |
| EXPECT_EQ(42, ITraits::getFromVoidPointer(ITraits::getAsVoidPointer(I))); |
| |
| PointerEmbeddedInt<uintptr_t, std::numeric_limits<uintptr_t>::digits - 1> |
| Max = std::numeric_limits<uintptr_t>::max() >> 1; |
| using MaxTraits = PointerLikeTypeTraits<decltype(Max)>; |
| EXPECT_EQ(std::numeric_limits<uintptr_t>::max() >> 1, |
| MaxTraits::getFromVoidPointer(MaxTraits::getAsVoidPointer(Max))); |
| } |
| |
| } // end anonymous namespace |