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//===- endian_test.cpp ------------------------- swap byte order test -----===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file is a part of the ORC runtime.
//
// Adapted from the llvm/unittests/Support/SwapByteOrderTest.cpp LLVM unit test.
//
//===----------------------------------------------------------------------===//
#include "endianness.h"
#include "gtest/gtest.h"
using namespace __orc_rt;
TEST(Endian, ByteSwap_32) {
EXPECT_EQ(0x44332211u, ByteSwap_32(0x11223344));
EXPECT_EQ(0xDDCCBBAAu, ByteSwap_32(0xAABBCCDD));
}
TEST(Endian, ByteSwap_64) {
EXPECT_EQ(0x8877665544332211ULL, ByteSwap_64(0x1122334455667788LL));
EXPECT_EQ(0x1100FFEEDDCCBBAAULL, ByteSwap_64(0xAABBCCDDEEFF0011LL));
}
// In these first two tests all of the original_uintx values are truncated
// except for 64. We could avoid this, but there's really no point.
TEST(Endian, getSwappedBytes_UnsignedRoundTrip) {
// The point of the bit twiddling of magic is to test with and without bits
// in every byte.
uint64_t value = 1;
for (std::size_t i = 0; i <= sizeof(value); ++i) {
uint8_t original_uint8 = static_cast<uint8_t>(value);
EXPECT_EQ(original_uint8, getSwappedBytes(getSwappedBytes(original_uint8)));
uint16_t original_uint16 = static_cast<uint16_t>(value);
EXPECT_EQ(original_uint16,
getSwappedBytes(getSwappedBytes(original_uint16)));
uint32_t original_uint32 = static_cast<uint32_t>(value);
EXPECT_EQ(original_uint32,
getSwappedBytes(getSwappedBytes(original_uint32)));
uint64_t original_uint64 = static_cast<uint64_t>(value);
EXPECT_EQ(original_uint64,
getSwappedBytes(getSwappedBytes(original_uint64)));
value = (value << 8) | 0x55; // binary 0101 0101.
}
}
TEST(Endian, getSwappedBytes_SignedRoundTrip) {
// The point of the bit twiddling of magic is to test with and without bits
// in every byte.
uint64_t value = 1;
for (std::size_t i = 0; i <= sizeof(value); ++i) {
int8_t original_int8 = static_cast<int8_t>(value);
EXPECT_EQ(original_int8, getSwappedBytes(getSwappedBytes(original_int8)));
int16_t original_int16 = static_cast<int16_t>(value);
EXPECT_EQ(original_int16, getSwappedBytes(getSwappedBytes(original_int16)));
int32_t original_int32 = static_cast<int32_t>(value);
EXPECT_EQ(original_int32, getSwappedBytes(getSwappedBytes(original_int32)));
int64_t original_int64 = static_cast<int64_t>(value);
EXPECT_EQ(original_int64, getSwappedBytes(getSwappedBytes(original_int64)));
// Test other sign.
value *= -1;
original_int8 = static_cast<int8_t>(value);
EXPECT_EQ(original_int8, getSwappedBytes(getSwappedBytes(original_int8)));
original_int16 = static_cast<int16_t>(value);
EXPECT_EQ(original_int16, getSwappedBytes(getSwappedBytes(original_int16)));
original_int32 = static_cast<int32_t>(value);
EXPECT_EQ(original_int32, getSwappedBytes(getSwappedBytes(original_int32)));
original_int64 = static_cast<int64_t>(value);
EXPECT_EQ(original_int64, getSwappedBytes(getSwappedBytes(original_int64)));
// Return to normal sign and twiddle.
value *= -1;
value = (value << 8) | 0x55; // binary 0101 0101.
}
}
TEST(Endian, getSwappedBytes_uint8_t) {
EXPECT_EQ(uint8_t(0x11), getSwappedBytes(uint8_t(0x11)));
}
TEST(Endian, getSwappedBytes_uint16_t) {
EXPECT_EQ(uint16_t(0x1122), getSwappedBytes(uint16_t(0x2211)));
}
TEST(Endian, getSwappedBytes_uint32_t) {
EXPECT_EQ(uint32_t(0x11223344), getSwappedBytes(uint32_t(0x44332211)));
}
TEST(Endian, getSwappedBytes_uint64_t) {
EXPECT_EQ(uint64_t(0x1122334455667788ULL),
getSwappedBytes(uint64_t(0x8877665544332211ULL)));
}
TEST(Endian, getSwappedBytes_int8_t) {
EXPECT_EQ(int8_t(0x11), getSwappedBytes(int8_t(0x11)));
}
TEST(Endian, getSwappedBytes_int16_t) {
EXPECT_EQ(int16_t(0x1122), getSwappedBytes(int16_t(0x2211)));
}
TEST(Endian, getSwappedBytes_int32_t) {
EXPECT_EQ(int32_t(0x11223344), getSwappedBytes(int32_t(0x44332211)));
}
TEST(Endian, getSwappedBytes_int64_t) {
EXPECT_EQ(int64_t(0x1122334455667788LL),
getSwappedBytes(int64_t(0x8877665544332211LL)));
}
TEST(Endian, swapByteOrder_uint8_t) {
uint8_t value = 0x11;
swapByteOrder(value);
EXPECT_EQ(uint8_t(0x11), value);
}
TEST(Endian, swapByteOrder_uint16_t) {
uint16_t value = 0x2211;
swapByteOrder(value);
EXPECT_EQ(uint16_t(0x1122), value);
}
TEST(Endian, swapByteOrder_uint32_t) {
uint32_t value = 0x44332211;
swapByteOrder(value);
EXPECT_EQ(uint32_t(0x11223344), value);
}
TEST(Endian, swapByteOrder_uint64_t) {
uint64_t value = 0x8877665544332211ULL;
swapByteOrder(value);
EXPECT_EQ(uint64_t(0x1122334455667788ULL), value);
}
TEST(Endian, swapByteOrder_int8_t) {
int8_t value = 0x11;
swapByteOrder(value);
EXPECT_EQ(int8_t(0x11), value);
}
TEST(Endian, swapByteOrder_int16_t) {
int16_t value = 0x2211;
swapByteOrder(value);
EXPECT_EQ(int16_t(0x1122), value);
}
TEST(Endian, swapByteOrder_int32_t) {
int32_t value = 0x44332211;
swapByteOrder(value);
EXPECT_EQ(int32_t(0x11223344), value);
}
TEST(Endian, swapByteOrder_int64_t) {
int64_t value = 0x8877665544332211LL;
swapByteOrder(value);
EXPECT_EQ(int64_t(0x1122334455667788LL), value);
}
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