blob: 3a8e9d61d494f08924d50c1ec6e49cc6764c3751 [file] [log] [blame]
// Copyright 2016 the V8 project authors. All rights reserved. Use of this
// source code is governed by a BSD-style license that can be found in the
// LICENSE file.
#include <cmath>
#include <functional>
#include <limits>
#include "src/base/bits.h"
#include "src/base/overflowing-math.h"
#include "src/base/utils/random-number-generator.h"
#include "src/objects/objects-inl.h"
#include "test/cctest/cctest.h"
#include "test/cctest/compiler/codegen-tester.h"
#include "test/cctest/compiler/value-helper.h"
namespace v8 {
namespace internal {
namespace compiler {
enum TestAlignment {
kAligned,
kUnaligned,
};
#if V8_TARGET_LITTLE_ENDIAN
#define LSB(addr, bytes) addr
#elif V8_TARGET_BIG_ENDIAN
#define LSB(addr, bytes) reinterpret_cast<byte*>(addr + 1) - (bytes)
#else
#error "Unknown Architecture"
#endif
// This is a America!
#define A_BILLION 1000000000ULL
#define A_GIG (1024ULL * 1024ULL * 1024ULL)
namespace {
void RunLoadInt32(const TestAlignment t) {
RawMachineAssemblerTester<int32_t> m;
int32_t p1 = 0; // loads directly from this location.
if (t == TestAlignment::kAligned) {
m.Return(m.LoadFromPointer(&p1, MachineType::Int32()));
} else if (t == TestAlignment::kUnaligned) {
m.Return(m.UnalignedLoadFromPointer(&p1, MachineType::Int32()));
} else {
UNREACHABLE();
}
FOR_INT32_INPUTS(i) {
p1 = i;
CHECK_EQ(p1, m.Call());
}
}
void RunLoadInt32Offset(TestAlignment t) {
int32_t p1 = 0; // loads directly from this location.
int32_t offsets[] = {-2000000, -100, -101, 1, 3,
7, 120, 2000, 2000000000, 0xFF};
for (size_t i = 0; i < arraysize(offsets); i++) {
RawMachineAssemblerTester<int32_t> m;
int32_t offset = offsets[i];
byte* pointer = reinterpret_cast<byte*>(&p1) - offset;
// generate load [#base + #index]
if (t == TestAlignment::kAligned) {
m.Return(m.LoadFromPointer(pointer, MachineType::Int32(), offset));
} else if (t == TestAlignment::kUnaligned) {
m.Return(
m.UnalignedLoadFromPointer(pointer, MachineType::Int32(), offset));
} else {
UNREACHABLE();
}
FOR_INT32_INPUTS(j) {
p1 = j;
CHECK_EQ(p1, m.Call());
}
}
}
void RunLoadStoreFloat32Offset(TestAlignment t) {
float p1 = 0.0f; // loads directly from this location.
float p2 = 0.0f; // and stores directly into this location.
FOR_INT32_INPUTS(i) {
int32_t magic =
base::AddWithWraparound(0x2342AABB, base::MulWithWraparound(i, 3));
RawMachineAssemblerTester<int32_t> m;
int32_t offset = i;
byte* from = reinterpret_cast<byte*>(&p1) - offset;
byte* to = reinterpret_cast<byte*>(&p2) - offset;
// generate load [#base + #index]
if (t == TestAlignment::kAligned) {
Node* load = m.Load(MachineType::Float32(), m.PointerConstant(from),
m.IntPtrConstant(offset));
m.Store(MachineRepresentation::kFloat32, m.PointerConstant(to),
m.IntPtrConstant(offset), load, kNoWriteBarrier);
} else if (t == TestAlignment::kUnaligned) {
Node* load =
m.UnalignedLoad(MachineType::Float32(), m.PointerConstant(from),
m.IntPtrConstant(offset));
m.UnalignedStore(MachineRepresentation::kFloat32, m.PointerConstant(to),
m.IntPtrConstant(offset), load);
} else {
UNREACHABLE();
}
m.Return(m.Int32Constant(magic));
FOR_FLOAT32_INPUTS(j) {
p1 = j;
p2 = j - 5;
CHECK_EQ(magic, m.Call());
CHECK_DOUBLE_EQ(p1, p2);
}
}
}
void RunLoadStoreFloat64Offset(TestAlignment t) {
double p1 = 0; // loads directly from this location.
double p2 = 0; // and stores directly into this location.
FOR_INT32_INPUTS(i) {
int32_t magic =
base::AddWithWraparound(0x2342AABB, base::MulWithWraparound(i, 3));
RawMachineAssemblerTester<int32_t> m;
int32_t offset = i;
byte* from = reinterpret_cast<byte*>(&p1) - offset;
byte* to = reinterpret_cast<byte*>(&p2) - offset;
// generate load [#base + #index]
if (t == TestAlignment::kAligned) {
Node* load = m.Load(MachineType::Float64(), m.PointerConstant(from),
m.IntPtrConstant(offset));
m.Store(MachineRepresentation::kFloat64, m.PointerConstant(to),
m.IntPtrConstant(offset), load, kNoWriteBarrier);
} else if (t == TestAlignment::kUnaligned) {
Node* load =
m.UnalignedLoad(MachineType::Float64(), m.PointerConstant(from),
m.IntPtrConstant(offset));
m.UnalignedStore(MachineRepresentation::kFloat64, m.PointerConstant(to),
m.IntPtrConstant(offset), load);
} else {
UNREACHABLE();
}
m.Return(m.Int32Constant(magic));
FOR_FLOAT64_INPUTS(j) {
p1 = j;
p2 = j - 5;
CHECK_EQ(magic, m.Call());
CHECK_DOUBLE_EQ(p1, p2);
}
}
}
} // namespace
TEST(RunLoadInt32) { RunLoadInt32(TestAlignment::kAligned); }
TEST(RunUnalignedLoadInt32) { RunLoadInt32(TestAlignment::kUnaligned); }
TEST(RunLoadInt32Offset) { RunLoadInt32Offset(TestAlignment::kAligned); }
TEST(RunUnalignedLoadInt32Offset) {
RunLoadInt32Offset(TestAlignment::kUnaligned);
}
TEST(RunLoadStoreFloat32Offset) {
RunLoadStoreFloat32Offset(TestAlignment::kAligned);
}
TEST(RunUnalignedLoadStoreFloat32Offset) {
RunLoadStoreFloat32Offset(TestAlignment::kUnaligned);
}
TEST(RunLoadStoreFloat64Offset) {
RunLoadStoreFloat64Offset(TestAlignment::kAligned);
}
TEST(RunUnalignedLoadStoreFloat64Offset) {
RunLoadStoreFloat64Offset(TestAlignment::kUnaligned);
}
namespace {
// Mostly same as CHECK_EQ() but customized for compressed tagged values.
template <typename CType>
void CheckEq(CType in_value, CType out_value) {
CHECK_EQ(in_value, out_value);
}
#ifdef V8_COMPRESS_POINTERS
// Specializations for checking the result of compressing store.
template <>
void CheckEq<Object>(Object in_value, Object out_value) {
// Compare only lower 32-bits of the value because tagged load/stores are
// 32-bit operations anyway.
CHECK_EQ(static_cast<Tagged_t>(in_value.ptr()),
static_cast<Tagged_t>(out_value.ptr()));
}
template <>
void CheckEq<HeapObject>(HeapObject in_value, HeapObject out_value) {
return CheckEq<Object>(in_value, out_value);
}
template <>
void CheckEq<Smi>(Smi in_value, Smi out_value) {
return CheckEq<Object>(in_value, out_value);
}
#endif
// Initializes the buffer with some raw data respecting requested representation
// of the values.
template <typename CType>
void InitBuffer(CType* buffer, size_t length, MachineType type) {
const size_t kBufferSize = sizeof(CType) * length;
if (!type.IsTagged()) {
byte* raw = reinterpret_cast<byte*>(buffer);
for (size_t i = 0; i < kBufferSize; i++) {
raw[i] = static_cast<byte>((i + kBufferSize) ^ 0xAA);
}
return;
}
// Tagged field loads require values to be properly tagged because of
// pointer decompression that may be happenning during load.
Isolate* isolate = CcTest::InitIsolateOnce();
Smi* smi_view = reinterpret_cast<Smi*>(&buffer[0]);
if (type.IsTaggedSigned()) {
for (size_t i = 0; i < length; i++) {
smi_view[i] = Smi::FromInt(static_cast<int>(i + kBufferSize) ^ 0xABCDEF0);
}
} else {
memcpy(&buffer[0], &isolate->roots_table(), kBufferSize);
if (!type.IsTaggedPointer()) {
// Also add some Smis if we are checking AnyTagged case.
for (size_t i = 0; i < length / 2; i++) {
smi_view[i] =
Smi::FromInt(static_cast<int>(i + kBufferSize) ^ 0xABCDEF0);
}
}
}
}
template <typename CType>
void RunLoadImmIndex(MachineType type, TestAlignment t) {
const int kNumElems = 16;
CType buffer[kNumElems];
InitBuffer(buffer, kNumElems, type);
// Test with various large and small offsets.
for (int offset = -1; offset <= 200000; offset *= -5) {
for (int i = 0; i < kNumElems; i++) {
BufferedRawMachineAssemblerTester<CType> m;
void* base_pointer = &buffer[0] - offset;
#ifdef V8_COMPRESS_POINTERS
if (type.IsTagged()) {
// When pointer compression is enabled then we need to access only
// the lower 32-bit of the tagged value while the buffer contains
// full 64-bit values.
base_pointer = LSB(base_pointer, kTaggedSize);
}
#endif
Node* base = m.PointerConstant(base_pointer);
Node* index = m.Int32Constant((offset + i) * sizeof(buffer[0]));
if (t == TestAlignment::kAligned) {
m.Return(m.Load(type, base, index));
} else if (t == TestAlignment::kUnaligned) {
m.Return(m.UnalignedLoad(type, base, index));
} else {
UNREACHABLE();
}
CheckEq<CType>(buffer[i], m.Call());
}
}
}
template <typename CType>
void RunLoadStore(MachineType type, TestAlignment t) {
const int kNumElems = 16;
CType in_buffer[kNumElems];
CType out_buffer[kNumElems];
uintptr_t zap_data[] = {kZapValue, kZapValue};
CType zap_value;
STATIC_ASSERT(sizeof(CType) <= sizeof(zap_data));
MemCopy(&zap_value, &zap_data, sizeof(CType));
InitBuffer(in_buffer, kNumElems, type);
for (int32_t x = 0; x < kNumElems; x++) {
int32_t y = kNumElems - x - 1;
RawMachineAssemblerTester<int32_t> m;
int32_t OK = 0x29000 + x;
Node* in_base = m.PointerConstant(in_buffer);
Node* in_index = m.IntPtrConstant(x * sizeof(CType));
Node* out_base = m.PointerConstant(out_buffer);
Node* out_index = m.IntPtrConstant(y * sizeof(CType));
if (t == TestAlignment::kAligned) {
Node* load = m.Load(type, in_base, in_index);
m.Store(type.representation(), out_base, out_index, load,
kNoWriteBarrier);
} else if (t == TestAlignment::kUnaligned) {
Node* load = m.UnalignedLoad(type, in_base, in_index);
m.UnalignedStore(type.representation(), out_base, out_index, load);
}
m.Return(m.Int32Constant(OK));
for (int32_t z = 0; z < kNumElems; z++) {
out_buffer[z] = zap_value;
}
CHECK_NE(in_buffer[x], out_buffer[y]);
CHECK_EQ(OK, m.Call());
// Mostly same as CHECK_EQ() but customized for compressed tagged values.
CheckEq<CType>(in_buffer[x], out_buffer[y]);
for (int32_t z = 0; z < kNumElems; z++) {
if (z != y) CHECK_EQ(zap_value, out_buffer[z]);
}
}
}
template <typename CType>
void RunUnalignedLoadStoreUnalignedAccess(MachineType type) {
CType in, out;
byte in_buffer[2 * sizeof(CType)];
byte out_buffer[2 * sizeof(CType)];
InitBuffer(&in, 1, type);
for (int x = 0; x < static_cast<int>(sizeof(CType)); x++) {
// Direct write to &in_buffer[x] may cause unaligned access in C++ code so
// we use MemCopy() to handle that.
MemCopy(&in_buffer[x], &in, sizeof(CType));
for (int y = 0; y < static_cast<int>(sizeof(CType)); y++) {
RawMachineAssemblerTester<int32_t> m;
int32_t OK = 0x29000 + x;
Node* in_base = m.PointerConstant(in_buffer);
Node* in_index = m.IntPtrConstant(x);
Node* load = m.UnalignedLoad(type, in_base, in_index);
Node* out_base = m.PointerConstant(out_buffer);
Node* out_index = m.IntPtrConstant(y);
m.UnalignedStore(type.representation(), out_base, out_index, load);
m.Return(m.Int32Constant(OK));
CHECK_EQ(OK, m.Call());
// Direct read of &out_buffer[y] may cause unaligned access in C++ code
// so we use MemCopy() to handle that.
MemCopy(&out, &out_buffer[y], sizeof(CType));
// Mostly same as CHECK_EQ() but customized for compressed tagged values.
CheckEq<CType>(in, out);
}
}
}
} // namespace
TEST(RunLoadImmIndex) {
RunLoadImmIndex<int8_t>(MachineType::Int8(), TestAlignment::kAligned);
RunLoadImmIndex<uint8_t>(MachineType::Uint8(), TestAlignment::kAligned);
RunLoadImmIndex<int16_t>(MachineType::Int16(), TestAlignment::kAligned);
RunLoadImmIndex<uint16_t>(MachineType::Uint16(), TestAlignment::kAligned);
RunLoadImmIndex<int32_t>(MachineType::Int32(), TestAlignment::kAligned);
RunLoadImmIndex<uint32_t>(MachineType::Uint32(), TestAlignment::kAligned);
RunLoadImmIndex<void*>(MachineType::Pointer(), TestAlignment::kAligned);
RunLoadImmIndex<Smi>(MachineType::TaggedSigned(), TestAlignment::kAligned);
RunLoadImmIndex<HeapObject>(MachineType::TaggedPointer(),
TestAlignment::kAligned);
RunLoadImmIndex<Object>(MachineType::AnyTagged(), TestAlignment::kAligned);
RunLoadImmIndex<float>(MachineType::Float32(), TestAlignment::kAligned);
RunLoadImmIndex<double>(MachineType::Float64(), TestAlignment::kAligned);
#if V8_TARGET_ARCH_64_BIT
RunLoadImmIndex<int64_t>(MachineType::Int64(), TestAlignment::kAligned);
#endif
// TODO(titzer): test various indexing modes.
}
TEST(RunUnalignedLoadImmIndex) {
RunLoadImmIndex<int16_t>(MachineType::Int16(), TestAlignment::kUnaligned);
RunLoadImmIndex<uint16_t>(MachineType::Uint16(), TestAlignment::kUnaligned);
RunLoadImmIndex<int32_t>(MachineType::Int32(), TestAlignment::kUnaligned);
RunLoadImmIndex<uint32_t>(MachineType::Uint32(), TestAlignment::kUnaligned);
RunLoadImmIndex<void*>(MachineType::Pointer(), TestAlignment::kUnaligned);
RunLoadImmIndex<float>(MachineType::Float32(), TestAlignment::kUnaligned);
RunLoadImmIndex<double>(MachineType::Float64(), TestAlignment::kUnaligned);
#if V8_TARGET_ARCH_64_BIT
RunLoadImmIndex<int64_t>(MachineType::Int64(), TestAlignment::kUnaligned);
#endif
// TODO(titzer): test various indexing modes.
}
TEST(RunLoadStore) {
RunLoadStore<int8_t>(MachineType::Int8(), TestAlignment::kAligned);
RunLoadStore<uint8_t>(MachineType::Uint8(), TestAlignment::kAligned);
RunLoadStore<int16_t>(MachineType::Int16(), TestAlignment::kAligned);
RunLoadStore<uint16_t>(MachineType::Uint16(), TestAlignment::kAligned);
RunLoadStore<int32_t>(MachineType::Int32(), TestAlignment::kAligned);
RunLoadStore<uint32_t>(MachineType::Uint32(), TestAlignment::kAligned);
RunLoadStore<void*>(MachineType::Pointer(), TestAlignment::kAligned);
RunLoadStore<Smi>(MachineType::TaggedSigned(), TestAlignment::kAligned);
RunLoadStore<HeapObject>(MachineType::TaggedPointer(),
TestAlignment::kAligned);
RunLoadStore<Object>(MachineType::AnyTagged(), TestAlignment::kAligned);
RunLoadStore<float>(MachineType::Float32(), TestAlignment::kAligned);
RunLoadStore<double>(MachineType::Float64(), TestAlignment::kAligned);
#if V8_TARGET_ARCH_64_BIT
RunLoadStore<int64_t>(MachineType::Int64(), TestAlignment::kAligned);
#endif
}
TEST(RunUnalignedLoadStore) {
RunLoadStore<int16_t>(MachineType::Int16(), TestAlignment::kUnaligned);
RunLoadStore<uint16_t>(MachineType::Uint16(), TestAlignment::kUnaligned);
RunLoadStore<int32_t>(MachineType::Int32(), TestAlignment::kUnaligned);
RunLoadStore<uint32_t>(MachineType::Uint32(), TestAlignment::kUnaligned);
RunLoadStore<void*>(MachineType::Pointer(), TestAlignment::kUnaligned);
RunLoadStore<float>(MachineType::Float32(), TestAlignment::kUnaligned);
RunLoadStore<double>(MachineType::Float64(), TestAlignment::kUnaligned);
#if V8_TARGET_ARCH_64_BIT
RunLoadStore<int64_t>(MachineType::Int64(), TestAlignment::kUnaligned);
#endif
}
TEST(RunUnalignedLoadStoreUnalignedAccess) {
RunUnalignedLoadStoreUnalignedAccess<int16_t>(MachineType::Int16());
RunUnalignedLoadStoreUnalignedAccess<uint16_t>(MachineType::Uint16());
RunUnalignedLoadStoreUnalignedAccess<int32_t>(MachineType::Int32());
RunUnalignedLoadStoreUnalignedAccess<uint32_t>(MachineType::Uint32());
RunUnalignedLoadStoreUnalignedAccess<void*>(MachineType::Pointer());
RunUnalignedLoadStoreUnalignedAccess<float>(MachineType::Float32());
RunUnalignedLoadStoreUnalignedAccess<double>(MachineType::Float64());
#if V8_TARGET_ARCH_64_BIT
RunUnalignedLoadStoreUnalignedAccess<int64_t>(MachineType::Int64());
#endif
}
namespace {
void RunLoadStoreSignExtend32(TestAlignment t) {
int32_t buffer[4];
RawMachineAssemblerTester<int32_t> m;
Node* load8 = m.LoadFromPointer(LSB(&buffer[0], 1), MachineType::Int8());
if (t == TestAlignment::kAligned) {
Node* load16 = m.LoadFromPointer(LSB(&buffer[0], 2), MachineType::Int16());
Node* load32 = m.LoadFromPointer(&buffer[0], MachineType::Int32());
m.StoreToPointer(&buffer[1], MachineRepresentation::kWord32, load8);
m.StoreToPointer(&buffer[2], MachineRepresentation::kWord32, load16);
m.StoreToPointer(&buffer[3], MachineRepresentation::kWord32, load32);
} else if (t == TestAlignment::kUnaligned) {
Node* load16 =
m.UnalignedLoadFromPointer(LSB(&buffer[0], 2), MachineType::Int16());
Node* load32 = m.UnalignedLoadFromPointer(&buffer[0], MachineType::Int32());
m.StoreToPointer(&buffer[1], MachineRepresentation::kWord32, load8);
m.UnalignedStoreToPointer(&buffer[2], MachineRepresentation::kWord32,
load16);
m.UnalignedStoreToPointer(&buffer[3], MachineRepresentation::kWord32,
load32);
} else {
UNREACHABLE();
}
m.Return(load8);
FOR_INT32_INPUTS(i) {
buffer[0] = i;
CHECK_EQ(static_cast<int8_t>(i & 0xFF), m.Call());
CHECK_EQ(static_cast<int8_t>(i & 0xFF), buffer[1]);
CHECK_EQ(static_cast<int16_t>(i & 0xFFFF), buffer[2]);
CHECK_EQ(i, buffer[3]);
}
}
void RunLoadStoreZeroExtend32(TestAlignment t) {
uint32_t buffer[4];
RawMachineAssemblerTester<uint32_t> m;
Node* load8 = m.LoadFromPointer(LSB(&buffer[0], 1), MachineType::Uint8());
if (t == TestAlignment::kAligned) {
Node* load16 = m.LoadFromPointer(LSB(&buffer[0], 2), MachineType::Uint16());
Node* load32 = m.LoadFromPointer(&buffer[0], MachineType::Uint32());
m.StoreToPointer(&buffer[1], MachineRepresentation::kWord32, load8);
m.StoreToPointer(&buffer[2], MachineRepresentation::kWord32, load16);
m.StoreToPointer(&buffer[3], MachineRepresentation::kWord32, load32);
} else if (t == TestAlignment::kUnaligned) {
Node* load16 =
m.UnalignedLoadFromPointer(LSB(&buffer[0], 2), MachineType::Uint16());
Node* load32 =
m.UnalignedLoadFromPointer(&buffer[0], MachineType::Uint32());
m.StoreToPointer(&buffer[1], MachineRepresentation::kWord32, load8);
m.UnalignedStoreToPointer(&buffer[2], MachineRepresentation::kWord32,
load16);
m.UnalignedStoreToPointer(&buffer[3], MachineRepresentation::kWord32,
load32);
}
m.Return(load8);
FOR_UINT32_INPUTS(i) {
buffer[0] = i;
CHECK_EQ((i & 0xFF), m.Call());
CHECK_EQ((i & 0xFF), buffer[1]);
CHECK_EQ((i & 0xFFFF), buffer[2]);
CHECK_EQ(i, buffer[3]);
}
}
} // namespace
TEST(RunLoadStoreSignExtend32) {
RunLoadStoreSignExtend32(TestAlignment::kAligned);
}
TEST(RunUnalignedLoadStoreSignExtend32) {
RunLoadStoreSignExtend32(TestAlignment::kUnaligned);
}
TEST(RunLoadStoreZeroExtend32) {
RunLoadStoreZeroExtend32(TestAlignment::kAligned);
}
TEST(RunUnalignedLoadStoreZeroExtend32) {
RunLoadStoreZeroExtend32(TestAlignment::kUnaligned);
}
#if V8_TARGET_ARCH_64_BIT
namespace {
void RunLoadStoreSignExtend64(TestAlignment t) {
if ((true)) return; // TODO(titzer): sign extension of loads to 64-bit.
int64_t buffer[5];
RawMachineAssemblerTester<int64_t> m;
Node* load8 = m.LoadFromPointer(LSB(&buffer[0], 1), MachineType::Int8());
if (t == TestAlignment::kAligned) {
Node* load16 = m.LoadFromPointer(LSB(&buffer[0], 2), MachineType::Int16());
Node* load32 = m.LoadFromPointer(LSB(&buffer[0], 4), MachineType::Int32());
Node* load64 = m.LoadFromPointer(&buffer[0], MachineType::Int64());
m.StoreToPointer(&buffer[1], MachineRepresentation::kWord64, load8);
m.StoreToPointer(&buffer[2], MachineRepresentation::kWord64, load16);
m.StoreToPointer(&buffer[3], MachineRepresentation::kWord64, load32);
m.StoreToPointer(&buffer[4], MachineRepresentation::kWord64, load64);
} else if (t == TestAlignment::kUnaligned) {
Node* load16 =
m.UnalignedLoadFromPointer(LSB(&buffer[0], 2), MachineType::Int16());
Node* load32 =
m.UnalignedLoadFromPointer(LSB(&buffer[0], 4), MachineType::Int32());
Node* load64 = m.UnalignedLoadFromPointer(&buffer[0], MachineType::Int64());
m.StoreToPointer(&buffer[1], MachineRepresentation::kWord64, load8);
m.UnalignedStoreToPointer(&buffer[2], MachineRepresentation::kWord64,
load16);
m.UnalignedStoreToPointer(&buffer[3], MachineRepresentation::kWord64,
load32);
m.UnalignedStoreToPointer(&buffer[4], MachineRepresentation::kWord64,
load64);
} else {
UNREACHABLE();
}
m.Return(load8);
FOR_INT64_INPUTS(i) {
buffer[0] = i;
CHECK_EQ(static_cast<int8_t>(i & 0xFF), m.Call());
CHECK_EQ(static_cast<int8_t>(i & 0xFF), buffer[1]);
CHECK_EQ(static_cast<int16_t>(i & 0xFFFF), buffer[2]);
CHECK_EQ(static_cast<int32_t>(i & 0xFFFFFFFF), buffer[3]);
CHECK_EQ(i, buffer[4]);
}
}
void RunLoadStoreZeroExtend64(TestAlignment t) {
if (kSystemPointerSize < 8) return;
uint64_t buffer[5];
RawMachineAssemblerTester<uint64_t> m;
Node* load8 = m.LoadFromPointer(LSB(&buffer[0], 1), MachineType::Uint8());
if (t == TestAlignment::kAligned) {
Node* load16 = m.LoadFromPointer(LSB(&buffer[0], 2), MachineType::Uint16());
Node* load32 = m.LoadFromPointer(LSB(&buffer[0], 4), MachineType::Uint32());
Node* load64 = m.LoadFromPointer(&buffer[0], MachineType::Uint64());
m.StoreToPointer(&buffer[1], MachineRepresentation::kWord64, load8);
m.StoreToPointer(&buffer[2], MachineRepresentation::kWord64, load16);
m.StoreToPointer(&buffer[3], MachineRepresentation::kWord64, load32);
m.StoreToPointer(&buffer[4], MachineRepresentation::kWord64, load64);
} else if (t == TestAlignment::kUnaligned) {
Node* load16 =
m.UnalignedLoadFromPointer(LSB(&buffer[0], 2), MachineType::Uint16());
Node* load32 =
m.UnalignedLoadFromPointer(LSB(&buffer[0], 4), MachineType::Uint32());
Node* load64 =
m.UnalignedLoadFromPointer(&buffer[0], MachineType::Uint64());
m.StoreToPointer(&buffer[1], MachineRepresentation::kWord64, load8);
m.UnalignedStoreToPointer(&buffer[2], MachineRepresentation::kWord64,
load16);
m.UnalignedStoreToPointer(&buffer[3], MachineRepresentation::kWord64,
load32);
m.UnalignedStoreToPointer(&buffer[4], MachineRepresentation::kWord64,
load64);
} else {
UNREACHABLE();
}
m.Return(load8);
FOR_UINT64_INPUTS(i) {
buffer[0] = i;
CHECK_EQ((i & 0xFF), m.Call());
CHECK_EQ((i & 0xFF), buffer[1]);
CHECK_EQ((i & 0xFFFF), buffer[2]);
CHECK_EQ((i & 0xFFFFFFFF), buffer[3]);
CHECK_EQ(i, buffer[4]);
}
}
} // namespace
TEST(RunLoadStoreSignExtend64) {
RunLoadStoreSignExtend64(TestAlignment::kAligned);
}
TEST(RunUnalignedLoadStoreSignExtend64) {
RunLoadStoreSignExtend64(TestAlignment::kUnaligned);
}
TEST(RunLoadStoreZeroExtend64) {
RunLoadStoreZeroExtend64(TestAlignment::kAligned);
}
TEST(RunUnalignedLoadStoreZeroExtend64) {
RunLoadStoreZeroExtend64(TestAlignment::kUnaligned);
}
#endif
namespace {
template <typename IntType>
void LoadStoreTruncation(MachineType kRepresentation, TestAlignment t) {
IntType input;
RawMachineAssemblerTester<int32_t> m;
Node* ap1;
if (t == TestAlignment::kAligned) {
Node* a = m.LoadFromPointer(&input, kRepresentation);
ap1 = m.Int32Add(a, m.Int32Constant(1));
m.StoreToPointer(&input, kRepresentation.representation(), ap1);
} else if (t == TestAlignment::kUnaligned) {
Node* a = m.UnalignedLoadFromPointer(&input, kRepresentation);
ap1 = m.Int32Add(a, m.Int32Constant(1));
m.UnalignedStoreToPointer(&input, kRepresentation.representation(), ap1);
} else {
UNREACHABLE();
}
m.Return(ap1);
const IntType max = std::numeric_limits<IntType>::max();
const IntType min = std::numeric_limits<IntType>::min();
// Test upper bound.
input = max;
CHECK_EQ(max + 1, m.Call());
CHECK_EQ(min, input);
// Test lower bound.
input = min;
CHECK_EQ(static_cast<IntType>(max + 2), m.Call());
CHECK_EQ(min + 1, input);
// Test all one byte values that are not one byte bounds.
for (int i = -127; i < 127; i++) {
input = i;
int expected = i >= 0 ? i + 1 : max + (i - min) + 2;
CHECK_EQ(static_cast<IntType>(expected), m.Call());
CHECK_EQ(static_cast<IntType>(i + 1), input);
}
}
} // namespace
TEST(RunLoadStoreTruncation) {
LoadStoreTruncation<int8_t>(MachineType::Int8(), TestAlignment::kAligned);
LoadStoreTruncation<int16_t>(MachineType::Int16(), TestAlignment::kAligned);
}
TEST(RunUnalignedLoadStoreTruncation) {
LoadStoreTruncation<int16_t>(MachineType::Int16(), TestAlignment::kUnaligned);
}
#undef LSB
#undef A_BILLION
#undef A_GIG
} // namespace compiler
} // namespace internal
} // namespace v8