mirror of
https://github.com/RPCS3/llvm.git
synced 2024-11-29 06:30:30 +00:00
1f6efa3996
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120298 91177308-0d34-0410-b5e6-96231b3b80d8
129 lines
3.9 KiB
C++
129 lines
3.9 KiB
C++
//===- unittests/Support/SwapByteOrderTest.cpp - swap byte order test -----===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "gtest/gtest.h"
|
|
#include "llvm/Support/SwapByteOrder.h"
|
|
#include <cstdlib>
|
|
#include <ctime>
|
|
using namespace llvm;
|
|
|
|
#undef max
|
|
|
|
namespace {
|
|
|
|
// In these first two tests all of the origional_uintx values are truncated
|
|
// except for 64. We could avoid this, but there's really no point.
|
|
|
|
TEST(SwapByteOrder, 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 origional_uint8 = static_cast<uint8_t>(value);
|
|
EXPECT_EQ(origional_uint8,
|
|
sys::SwapByteOrder(sys::SwapByteOrder(origional_uint8)));
|
|
|
|
uint16_t origional_uint16 = static_cast<uint16_t>(value);
|
|
EXPECT_EQ(origional_uint16,
|
|
sys::SwapByteOrder(sys::SwapByteOrder(origional_uint16)));
|
|
|
|
uint32_t origional_uint32 = static_cast<uint32_t>(value);
|
|
EXPECT_EQ(origional_uint32,
|
|
sys::SwapByteOrder(sys::SwapByteOrder(origional_uint32)));
|
|
|
|
uint64_t origional_uint64 = static_cast<uint64_t>(value);
|
|
EXPECT_EQ(origional_uint64,
|
|
sys::SwapByteOrder(sys::SwapByteOrder(origional_uint64)));
|
|
|
|
value = (value << 8) | 0x55; // binary 0101 0101.
|
|
}
|
|
}
|
|
|
|
TEST(SwapByteOrder, 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 origional_int8 = static_cast<int8_t>(value);
|
|
EXPECT_EQ(origional_int8,
|
|
sys::SwapByteOrder(sys::SwapByteOrder(origional_int8)));
|
|
|
|
int16_t origional_int16 = static_cast<int16_t>(value);
|
|
EXPECT_EQ(origional_int16,
|
|
sys::SwapByteOrder(sys::SwapByteOrder(origional_int16)));
|
|
|
|
int32_t origional_int32 = static_cast<int32_t>(value);
|
|
EXPECT_EQ(origional_int32,
|
|
sys::SwapByteOrder(sys::SwapByteOrder(origional_int32)));
|
|
|
|
int64_t origional_int64 = static_cast<int64_t>(value);
|
|
EXPECT_EQ(origional_int64,
|
|
sys::SwapByteOrder(sys::SwapByteOrder(origional_int64)));
|
|
|
|
// Test other sign.
|
|
value *= -1;
|
|
|
|
origional_int8 = static_cast<int8_t>(value);
|
|
EXPECT_EQ(origional_int8,
|
|
sys::SwapByteOrder(sys::SwapByteOrder(origional_int8)));
|
|
|
|
origional_int16 = static_cast<int16_t>(value);
|
|
EXPECT_EQ(origional_int16,
|
|
sys::SwapByteOrder(sys::SwapByteOrder(origional_int16)));
|
|
|
|
origional_int32 = static_cast<int32_t>(value);
|
|
EXPECT_EQ(origional_int32,
|
|
sys::SwapByteOrder(sys::SwapByteOrder(origional_int32)));
|
|
|
|
origional_int64 = static_cast<int64_t>(value);
|
|
EXPECT_EQ(origional_int64,
|
|
sys::SwapByteOrder(sys::SwapByteOrder(origional_int64)));
|
|
|
|
// Return to normal sign and twiddle.
|
|
value *= -1;
|
|
value = (value << 8) | 0x55; // binary 0101 0101.
|
|
}
|
|
}
|
|
|
|
TEST(SwapByteOrder, uint8_t) {
|
|
EXPECT_EQ(uint8_t(0x11), sys::SwapByteOrder(uint8_t(0x11)));
|
|
}
|
|
|
|
TEST(SwapByteOrder, uint16_t) {
|
|
EXPECT_EQ(uint16_t(0x1122), sys::SwapByteOrder(uint16_t(0x2211)));
|
|
}
|
|
|
|
TEST(SwapByteOrder, uint32_t) {
|
|
EXPECT_EQ(uint32_t(0x11223344), sys::SwapByteOrder(uint32_t(0x44332211)));
|
|
}
|
|
|
|
TEST(SwapByteOrder, uint64_t) {
|
|
EXPECT_EQ(uint64_t(0x1122334455667788ULL),
|
|
sys::SwapByteOrder(uint64_t(0x8877665544332211ULL)));
|
|
}
|
|
|
|
TEST(SwapByteOrder, int8_t) {
|
|
EXPECT_EQ(int8_t(0x11), sys::SwapByteOrder(int8_t(0x11)));
|
|
}
|
|
|
|
TEST(SwapByteOrder, int16_t) {
|
|
EXPECT_EQ(int16_t(0x1122), sys::SwapByteOrder(int16_t(0x2211)));
|
|
}
|
|
|
|
TEST(SwapByteOrder, int32_t) {
|
|
EXPECT_EQ(int32_t(0x11223344), sys::SwapByteOrder(int32_t(0x44332211)));
|
|
}
|
|
|
|
TEST(SwapByteOrder, int64_t) {
|
|
EXPECT_EQ(int64_t(0x1122334455667788LL),
|
|
sys::SwapByteOrder(int64_t(0x8877665544332211LL)));
|
|
}
|
|
|
|
}
|