80 lines · cpp
1//===- llvm/unittest/ADT/PointerEmbeddedIntTest.cpp -----------------------===//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-exception6//7//===----------------------------------------------------------------------===//8 9#include "llvm/ADT/PointerEmbeddedInt.h"10#include "gtest/gtest.h"11using namespace llvm;12 13namespace {14 15TEST(PointerEmbeddedIntTest, Basic) {16 PointerEmbeddedInt<int, CHAR_BIT> I = 42, J = 43;17 18 EXPECT_EQ(42, I);19 EXPECT_EQ(43, I + 1);20 EXPECT_EQ((int)sizeof(uintptr_t) * CHAR_BIT - CHAR_BIT,21 (int)PointerLikeTypeTraits<decltype(I)>::NumLowBitsAvailable);22 23 EXPECT_FALSE(I == J);24 EXPECT_TRUE(I != J);25 EXPECT_TRUE(I < J);26 EXPECT_FALSE(I > J);27 EXPECT_TRUE(I <= J);28 EXPECT_FALSE(I >= J);29 30 EXPECT_FALSE(I == 43);31 EXPECT_TRUE(I != 43);32 EXPECT_TRUE(I < 43);33 EXPECT_FALSE(I > 43);34 EXPECT_TRUE(I <= 43);35 EXPECT_FALSE(I >= 43);36 37 EXPECT_FALSE(42 == J);38 EXPECT_TRUE(42 != J);39 EXPECT_TRUE(42 < J);40 EXPECT_FALSE(42 > J);41 EXPECT_TRUE(42 <= J);42 EXPECT_FALSE(42 >= J);43}44 45TEST(PointerEmbeddedIntTest, intptr_t) {46 PointerEmbeddedInt<intptr_t, CHAR_BIT> IPos = 42, INeg = -42;47 EXPECT_EQ(42, IPos);48 EXPECT_EQ(-42, INeg);49 50 PointerEmbeddedInt<uintptr_t, CHAR_BIT> U = 42, USaturated = 255;51 EXPECT_EQ(42U, U);52 EXPECT_EQ(255U, USaturated);53 54 PointerEmbeddedInt<intptr_t, std::numeric_limits<intptr_t>::digits>55 IMax = std::numeric_limits<intptr_t>::max() >> 1,56 IMin = std::numeric_limits<intptr_t>::min() >> 1;57 EXPECT_EQ(std::numeric_limits<intptr_t>::max() >> 1, IMax);58 EXPECT_EQ(std::numeric_limits<intptr_t>::min() >> 1, IMin);59 60 PointerEmbeddedInt<uintptr_t, std::numeric_limits<uintptr_t>::digits - 1>61 UMax = std::numeric_limits<uintptr_t>::max() >> 1,62 UMin = std::numeric_limits<uintptr_t>::min() >> 1;63 EXPECT_EQ(std::numeric_limits<uintptr_t>::max() >> 1, UMax);64 EXPECT_EQ(std::numeric_limits<uintptr_t>::min() >> 1, UMin);65}66 67TEST(PointerEmbeddedIntTest, PointerLikeTypeTraits) {68 PointerEmbeddedInt<int, CHAR_BIT> I = 42;69 using ITraits = PointerLikeTypeTraits<decltype(I)>;70 EXPECT_EQ(42, ITraits::getFromVoidPointer(ITraits::getAsVoidPointer(I)));71 72 PointerEmbeddedInt<uintptr_t, std::numeric_limits<uintptr_t>::digits - 1>73 Max = std::numeric_limits<uintptr_t>::max() >> 1;74 using MaxTraits = PointerLikeTypeTraits<decltype(Max)>;75 EXPECT_EQ(std::numeric_limits<uintptr_t>::max() >> 1,76 MaxTraits::getFromVoidPointer(MaxTraits::getAsVoidPointer(Max)));77}78 79} // end anonymous namespace80