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v8/test/cctest/wasm/wasm-simd-utils.cc
Manos Koukoutos 862ddf1efd [wasm] Do not enforce LE for globals and WasmValue 
Changes:
- Remove endianness transformations from WasmValue contstructors.
  WasmValue will now use the system's endianness. Remove
  CopyToWithSystemEndianness.
- Remove endianness transformation from global variable load/stores in:
  wasm-compiler.cc, liftoff-compiler.cc, wasm-objects{.cc, -inl.h}, and
  wasm-interpreter.cc
- Adjust SIMD tests that directly access part of a value by changing
  which lane they access within that value. We do that by introducing
  a LANE macro and use it over ReadLittleEndianValue.

Change-Id: I99e97c6eae72e9a135b184633ec266049803bb03
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2944437
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75085}
2021-06-10 18:08:38 +00:00

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// Copyright 2021 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 "test/cctest/wasm/wasm-simd-utils.h"
#include <cmath>
#include "src/base/logging.h"
#include "src/base/memory.h"
#include "src/common/globals.h"
#include "src/wasm/compilation-environment.h"
#include "src/wasm/value-type.h"
#include "src/wasm/wasm-opcodes.h"
#include "test/cctest/compiler/c-signature.h"
#include "test/cctest/compiler/value-helper.h"
#include "test/cctest/wasm/wasm-run-utils.h"
#include "test/common/wasm/wasm-macro-gen.h"
namespace v8 {
namespace internal {
namespace wasm {
void RunI8x16UnOpTest(TestExecutionTier execution_tier, WasmOpcode opcode,
Int8UnOp expected_op) {
WasmRunner<int32_t, int32_t> r(execution_tier);
// Global to hold output.
int8_t* g = r.builder().AddGlobal<int8_t>(kWasmS128);
// Build fn to splat test value, perform unop, and write the result.
byte value = 0;
byte temp1 = r.AllocateLocal(kWasmS128);
BUILD(r, WASM_LOCAL_SET(temp1, WASM_SIMD_I8x16_SPLAT(WASM_LOCAL_GET(value))),
WASM_GLOBAL_SET(0, WASM_SIMD_UNOP(opcode, WASM_LOCAL_GET(temp1))),
WASM_ONE);
FOR_INT8_INPUTS(x) {
r.Call(x);
int8_t expected = expected_op(x);
for (int i = 0; i < 16; i++) {
CHECK_EQ(expected, LANE(g, i));
}
}
}
template <typename T, typename OpType>
void RunI8x16BinOpTest(TestExecutionTier execution_tier, WasmOpcode opcode,
OpType expected_op) {
WasmRunner<int32_t, T, T> r(execution_tier);
// Global to hold output.
T* g = r.builder().template AddGlobal<T>(kWasmS128);
// Build fn to splat test values, perform binop, and write the result.
byte value1 = 0, value2 = 1;
byte temp1 = r.AllocateLocal(kWasmS128);
byte temp2 = r.AllocateLocal(kWasmS128);
BUILD(r, WASM_LOCAL_SET(temp1, WASM_SIMD_I8x16_SPLAT(WASM_LOCAL_GET(value1))),
WASM_LOCAL_SET(temp2, WASM_SIMD_I8x16_SPLAT(WASM_LOCAL_GET(value2))),
WASM_GLOBAL_SET(0, WASM_SIMD_BINOP(opcode, WASM_LOCAL_GET(temp1),
WASM_LOCAL_GET(temp2))),
WASM_ONE);
for (T x : compiler::ValueHelper::GetVector<T>()) {
for (T y : compiler::ValueHelper::GetVector<T>()) {
r.Call(x, y);
T expected = expected_op(x, y);
for (int i = 0; i < 16; i++) {
CHECK_EQ(expected, LANE(g, i));
}
}
}
}
// Explicit instantiations of uses.
template void RunI8x16BinOpTest<int8_t>(TestExecutionTier, WasmOpcode,
Int8BinOp);
template void RunI8x16BinOpTest<uint8_t>(TestExecutionTier, WasmOpcode,
Uint8BinOp);
void RunI8x16ShiftOpTest(TestExecutionTier execution_tier, WasmOpcode opcode,
Int8ShiftOp expected_op) {
// Intentionally shift by 8, should be no-op.
for (int shift = 1; shift <= 8; shift++) {
WasmRunner<int32_t, int32_t> r(execution_tier);
int32_t* memory = r.builder().AddMemoryElems<int32_t>(1);
int8_t* g_imm = r.builder().AddGlobal<int8_t>(kWasmS128);
int8_t* g_mem = r.builder().AddGlobal<int8_t>(kWasmS128);
byte value = 0;
byte simd = r.AllocateLocal(kWasmS128);
// Shift using an immediate, and shift using a value loaded from memory.
BUILD(
r, WASM_LOCAL_SET(simd, WASM_SIMD_I8x16_SPLAT(WASM_LOCAL_GET(value))),
WASM_GLOBAL_SET(0, WASM_SIMD_SHIFT_OP(opcode, WASM_LOCAL_GET(simd),
WASM_I32V(shift))),
WASM_GLOBAL_SET(1, WASM_SIMD_SHIFT_OP(
opcode, WASM_LOCAL_GET(simd),
WASM_LOAD_MEM(MachineType::Int32(), WASM_ZERO))),
WASM_ONE);
r.builder().WriteMemory(&memory[0], shift);
FOR_INT8_INPUTS(x) {
r.Call(x);
int8_t expected = expected_op(x, shift);
for (int i = 0; i < 16; i++) {
CHECK_EQ(expected, LANE(g_imm, i));
CHECK_EQ(expected, LANE(g_mem, i));
}
}
}
}
void RunI8x16MixedRelationalOpTest(TestExecutionTier execution_tier,
WasmOpcode opcode, Int8BinOp expected_op) {
WasmRunner<int32_t, int32_t, int32_t> r(execution_tier);
byte value1 = 0, value2 = 1;
byte temp1 = r.AllocateLocal(kWasmS128);
byte temp2 = r.AllocateLocal(kWasmS128);
byte temp3 = r.AllocateLocal(kWasmS128);
BUILD(r, WASM_LOCAL_SET(temp1, WASM_SIMD_I8x16_SPLAT(WASM_LOCAL_GET(value1))),
WASM_LOCAL_SET(temp2, WASM_SIMD_I16x8_SPLAT(WASM_LOCAL_GET(value2))),
WASM_LOCAL_SET(temp3, WASM_SIMD_BINOP(opcode, WASM_LOCAL_GET(temp1),
WASM_LOCAL_GET(temp2))),
WASM_SIMD_I8x16_EXTRACT_LANE(0, WASM_LOCAL_GET(temp3)));
CHECK_EQ(expected_op(0xff, static_cast<uint8_t>(0x7fff)),
r.Call(0xff, 0x7fff));
CHECK_EQ(expected_op(0xfe, static_cast<uint8_t>(0x7fff)),
r.Call(0xfe, 0x7fff));
CHECK_EQ(expected_op(0xff, static_cast<uint8_t>(0x7ffe)),
r.Call(0xff, 0x7ffe));
}
void RunI16x8UnOpTest(TestExecutionTier execution_tier, WasmOpcode opcode,
Int16UnOp expected_op) {
WasmRunner<int32_t, int32_t> r(execution_tier);
// Global to hold output.
int16_t* g = r.builder().AddGlobal<int16_t>(kWasmS128);
// Build fn to splat test value, perform unop, and write the result.
byte value = 0;
byte temp1 = r.AllocateLocal(kWasmS128);
BUILD(r, WASM_LOCAL_SET(temp1, WASM_SIMD_I16x8_SPLAT(WASM_LOCAL_GET(value))),
WASM_GLOBAL_SET(0, WASM_SIMD_UNOP(opcode, WASM_LOCAL_GET(temp1))),
WASM_ONE);
FOR_INT16_INPUTS(x) {
r.Call(x);
int16_t expected = expected_op(x);
for (int i = 0; i < 8; i++) {
CHECK_EQ(expected, LANE(g, i));
}
}
}
template <typename T, typename OpType>
void RunI16x8BinOpTest(TestExecutionTier execution_tier, WasmOpcode opcode,
OpType expected_op) {
WasmRunner<int32_t, T, T> r(execution_tier);
// Global to hold output.
T* g = r.builder().template AddGlobal<T>(kWasmS128);
// Build fn to splat test values, perform binop, and write the result.
byte value1 = 0, value2 = 1;
byte temp1 = r.AllocateLocal(kWasmS128);
byte temp2 = r.AllocateLocal(kWasmS128);
BUILD(r, WASM_LOCAL_SET(temp1, WASM_SIMD_I16x8_SPLAT(WASM_LOCAL_GET(value1))),
WASM_LOCAL_SET(temp2, WASM_SIMD_I16x8_SPLAT(WASM_LOCAL_GET(value2))),
WASM_GLOBAL_SET(0, WASM_SIMD_BINOP(opcode, WASM_LOCAL_GET(temp1),
WASM_LOCAL_GET(temp2))),
WASM_ONE);
for (T x : compiler::ValueHelper::GetVector<T>()) {
for (T y : compiler::ValueHelper::GetVector<T>()) {
r.Call(x, y);
T expected = expected_op(x, y);
for (int i = 0; i < 8; i++) {
CHECK_EQ(expected, LANE(g, i));
}
}
}
}
// Explicit instantiations of uses.
template void RunI16x8BinOpTest<int16_t>(TestExecutionTier, WasmOpcode,
Int16BinOp);
template void RunI16x8BinOpTest<uint16_t>(TestExecutionTier, WasmOpcode,
Uint16BinOp);
void RunI16x8ShiftOpTest(TestExecutionTier execution_tier, WasmOpcode opcode,
Int16ShiftOp expected_op) {
// Intentionally shift by 16, should be no-op.
for (int shift = 1; shift <= 16; shift++) {
WasmRunner<int32_t, int32_t> r(execution_tier);
int32_t* memory = r.builder().AddMemoryElems<int32_t>(1);
int16_t* g_imm = r.builder().AddGlobal<int16_t>(kWasmS128);
int16_t* g_mem = r.builder().AddGlobal<int16_t>(kWasmS128);
byte value = 0;
byte simd = r.AllocateLocal(kWasmS128);
// Shift using an immediate, and shift using a value loaded from memory.
BUILD(
r, WASM_LOCAL_SET(simd, WASM_SIMD_I16x8_SPLAT(WASM_LOCAL_GET(value))),
WASM_GLOBAL_SET(0, WASM_SIMD_SHIFT_OP(opcode, WASM_LOCAL_GET(simd),
WASM_I32V(shift))),
WASM_GLOBAL_SET(1, WASM_SIMD_SHIFT_OP(
opcode, WASM_LOCAL_GET(simd),
WASM_LOAD_MEM(MachineType::Int32(), WASM_ZERO))),
WASM_ONE);
r.builder().WriteMemory(&memory[0], shift);
FOR_INT16_INPUTS(x) {
r.Call(x);
int16_t expected = expected_op(x, shift);
for (int i = 0; i < 8; i++) {
CHECK_EQ(expected, LANE(g_imm, i));
CHECK_EQ(expected, LANE(g_mem, i));
}
}
}
}
void RunI16x8MixedRelationalOpTest(TestExecutionTier execution_tier,
WasmOpcode opcode, Int16BinOp expected_op) {
WasmRunner<int32_t, int32_t, int32_t> r(execution_tier);
byte value1 = 0, value2 = 1;
byte temp1 = r.AllocateLocal(kWasmS128);
byte temp2 = r.AllocateLocal(kWasmS128);
byte temp3 = r.AllocateLocal(kWasmS128);
BUILD(r, WASM_LOCAL_SET(temp1, WASM_SIMD_I16x8_SPLAT(WASM_LOCAL_GET(value1))),
WASM_LOCAL_SET(temp2, WASM_SIMD_I32x4_SPLAT(WASM_LOCAL_GET(value2))),
WASM_LOCAL_SET(temp3, WASM_SIMD_BINOP(opcode, WASM_LOCAL_GET(temp1),
WASM_LOCAL_GET(temp2))),
WASM_SIMD_I16x8_EXTRACT_LANE(0, WASM_LOCAL_GET(temp3)));
CHECK_EQ(expected_op(0xffff, static_cast<uint16_t>(0x7fffffff)),
r.Call(0xffff, 0x7fffffff));
CHECK_EQ(expected_op(0xfeff, static_cast<uint16_t>(0x7fffffff)),
r.Call(0xfeff, 0x7fffffff));
CHECK_EQ(expected_op(0xffff, static_cast<uint16_t>(0x7ffffeff)),
r.Call(0xffff, 0x7ffffeff));
}
void RunI32x4UnOpTest(TestExecutionTier execution_tier, WasmOpcode opcode,
Int32UnOp expected_op) {
WasmRunner<int32_t, int32_t> r(execution_tier);
// Global to hold output.
int32_t* g = r.builder().AddGlobal<int32_t>(kWasmS128);
// Build fn to splat test value, perform unop, and write the result.
byte value = 0;
byte temp1 = r.AllocateLocal(kWasmS128);
BUILD(r, WASM_LOCAL_SET(temp1, WASM_SIMD_I32x4_SPLAT(WASM_LOCAL_GET(value))),
WASM_GLOBAL_SET(0, WASM_SIMD_UNOP(opcode, WASM_LOCAL_GET(temp1))),
WASM_ONE);
FOR_INT32_INPUTS(x) {
r.Call(x);
int32_t expected = expected_op(x);
for (int i = 0; i < 4; i++) {
CHECK_EQ(expected, LANE(g, i));
}
}
}
void RunI32x4BinOpTest(TestExecutionTier execution_tier, WasmOpcode opcode,
Int32BinOp expected_op) {
WasmRunner<int32_t, int32_t, int32_t> r(execution_tier);
// Global to hold output.
int32_t* g = r.builder().AddGlobal<int32_t>(kWasmS128);
// Build fn to splat test values, perform binop, and write the result.
byte value1 = 0, value2 = 1;
byte temp1 = r.AllocateLocal(kWasmS128);
byte temp2 = r.AllocateLocal(kWasmS128);
BUILD(r, WASM_LOCAL_SET(temp1, WASM_SIMD_I32x4_SPLAT(WASM_LOCAL_GET(value1))),
WASM_LOCAL_SET(temp2, WASM_SIMD_I32x4_SPLAT(WASM_LOCAL_GET(value2))),
WASM_GLOBAL_SET(0, WASM_SIMD_BINOP(opcode, WASM_LOCAL_GET(temp1),
WASM_LOCAL_GET(temp2))),
WASM_ONE);
FOR_INT32_INPUTS(x) {
FOR_INT32_INPUTS(y) {
r.Call(x, y);
int32_t expected = expected_op(x, y);
for (int i = 0; i < 4; i++) {
CHECK_EQ(expected, LANE(g, i));
}
}
}
}
void RunI32x4ShiftOpTest(TestExecutionTier execution_tier, WasmOpcode opcode,
Int32ShiftOp expected_op) {
// Intentionally shift by 32, should be no-op.
for (int shift = 1; shift <= 32; shift++) {
WasmRunner<int32_t, int32_t> r(execution_tier);
int32_t* memory = r.builder().AddMemoryElems<int32_t>(1);
int32_t* g_imm = r.builder().AddGlobal<int32_t>(kWasmS128);
int32_t* g_mem = r.builder().AddGlobal<int32_t>(kWasmS128);
byte value = 0;
byte simd = r.AllocateLocal(kWasmS128);
// Shift using an immediate, and shift using a value loaded from memory.
BUILD(
r, WASM_LOCAL_SET(simd, WASM_SIMD_I32x4_SPLAT(WASM_LOCAL_GET(value))),
WASM_GLOBAL_SET(0, WASM_SIMD_SHIFT_OP(opcode, WASM_LOCAL_GET(simd),
WASM_I32V(shift))),
WASM_GLOBAL_SET(1, WASM_SIMD_SHIFT_OP(
opcode, WASM_LOCAL_GET(simd),
WASM_LOAD_MEM(MachineType::Int32(), WASM_ZERO))),
WASM_ONE);
r.builder().WriteMemory(&memory[0], shift);
FOR_INT32_INPUTS(x) {
r.Call(x);
int32_t expected = expected_op(x, shift);
for (int i = 0; i < 4; i++) {
CHECK_EQ(expected, LANE(g_imm, i));
CHECK_EQ(expected, LANE(g_mem, i));
}
}
}
}
void RunI64x2UnOpTest(TestExecutionTier execution_tier, WasmOpcode opcode,
Int64UnOp expected_op) {
WasmRunner<int32_t, int64_t> r(execution_tier);
// Global to hold output.
int64_t* g = r.builder().AddGlobal<int64_t>(kWasmS128);
// Build fn to splat test value, perform unop, and write the result.
byte value = 0;
byte temp1 = r.AllocateLocal(kWasmS128);
BUILD(r, WASM_LOCAL_SET(temp1, WASM_SIMD_I64x2_SPLAT(WASM_LOCAL_GET(value))),
WASM_GLOBAL_SET(0, WASM_SIMD_UNOP(opcode, WASM_LOCAL_GET(temp1))),
WASM_ONE);
FOR_INT64_INPUTS(x) {
r.Call(x);
int64_t expected = expected_op(x);
for (int i = 0; i < 2; i++) {
CHECK_EQ(expected, LANE(g, i));
}
}
}
void RunI64x2BinOpTest(TestExecutionTier execution_tier, WasmOpcode opcode,
Int64BinOp expected_op) {
WasmRunner<int32_t, int64_t, int64_t> r(execution_tier);
// Global to hold output.
int64_t* g = r.builder().AddGlobal<int64_t>(kWasmS128);
// Build fn to splat test values, perform binop, and write the result.
byte value1 = 0, value2 = 1;
byte temp1 = r.AllocateLocal(kWasmS128);
byte temp2 = r.AllocateLocal(kWasmS128);
BUILD(r, WASM_LOCAL_SET(temp1, WASM_SIMD_I64x2_SPLAT(WASM_LOCAL_GET(value1))),
WASM_LOCAL_SET(temp2, WASM_SIMD_I64x2_SPLAT(WASM_LOCAL_GET(value2))),
WASM_GLOBAL_SET(0, WASM_SIMD_BINOP(opcode, WASM_LOCAL_GET(temp1),
WASM_LOCAL_GET(temp2))),
WASM_ONE);
FOR_INT64_INPUTS(x) {
FOR_INT64_INPUTS(y) {
r.Call(x, y);
int64_t expected = expected_op(x, y);
for (int i = 0; i < 2; i++) {
CHECK_EQ(expected, LANE(g, i));
}
}
}
}
void RunI64x2ShiftOpTest(TestExecutionTier execution_tier, WasmOpcode opcode,
Int64ShiftOp expected_op) {
// Intentionally shift by 64, should be no-op.
for (int shift = 1; shift <= 64; shift++) {
WasmRunner<int32_t, int64_t> r(execution_tier);
int32_t* memory = r.builder().AddMemoryElems<int32_t>(1);
int64_t* g_imm = r.builder().AddGlobal<int64_t>(kWasmS128);
int64_t* g_mem = r.builder().AddGlobal<int64_t>(kWasmS128);
byte value = 0;
byte simd = r.AllocateLocal(kWasmS128);
// Shift using an immediate, and shift using a value loaded from memory.
BUILD(
r, WASM_LOCAL_SET(simd, WASM_SIMD_I64x2_SPLAT(WASM_LOCAL_GET(value))),
WASM_GLOBAL_SET(0, WASM_SIMD_SHIFT_OP(opcode, WASM_LOCAL_GET(simd),
WASM_I32V(shift))),
WASM_GLOBAL_SET(1, WASM_SIMD_SHIFT_OP(
opcode, WASM_LOCAL_GET(simd),
WASM_LOAD_MEM(MachineType::Int32(), WASM_ZERO))),
WASM_ONE);
r.builder().WriteMemory(&memory[0], shift);
FOR_INT64_INPUTS(x) {
r.Call(x);
int64_t expected = expected_op(x, shift);
for (int i = 0; i < 2; i++) {
CHECK_EQ(expected, LANE(g_imm, i));
CHECK_EQ(expected, LANE(g_mem, i));
}
}
}
}
bool IsExtreme(float x) {
float abs_x = std::fabs(x);
const float kSmallFloatThreshold = 1.0e-32f;
const float kLargeFloatThreshold = 1.0e32f;
return abs_x != 0.0f && // 0 or -0 are fine.
(abs_x < kSmallFloatThreshold || abs_x > kLargeFloatThreshold);
}
bool IsSameNan(float expected, float actual) {
// Sign is non-deterministic.
uint32_t expected_bits = bit_cast<uint32_t>(expected) & ~0x80000000;
uint32_t actual_bits = bit_cast<uint32_t>(actual) & ~0x80000000;
// Some implementations convert signaling NaNs to quiet NaNs.
return (expected_bits == actual_bits) ||
((expected_bits | 0x00400000) == actual_bits);
}
bool IsCanonical(float actual) {
uint32_t actual_bits = bit_cast<uint32_t>(actual);
// Canonical NaN has quiet bit and no payload.
return (actual_bits & 0xFFC00000) == actual_bits;
}
void CheckFloatResult(float x, float y, float expected, float actual,
bool exact) {
if (std::isnan(expected)) {
CHECK(std::isnan(actual));
if (std::isnan(x) && IsSameNan(x, actual)) return;
if (std::isnan(y) && IsSameNan(y, actual)) return;
if (IsSameNan(expected, actual)) return;
if (IsCanonical(actual)) return;
// This is expected to assert; it's useful for debugging.
CHECK_EQ(bit_cast<uint32_t>(expected), bit_cast<uint32_t>(actual));
} else {
if (exact) {
CHECK_EQ(expected, actual);
// The sign of 0's must match.
CHECK_EQ(std::signbit(expected), std::signbit(actual));
return;
}
// Otherwise, perform an approximate equality test. First check for
// equality to handle +/-Infinity where approximate equality doesn't work.
if (expected == actual) return;
// 1% error allows all platforms to pass easily.
constexpr float kApproximationError = 0.01f;
float abs_error = std::abs(expected) * kApproximationError,
min = expected - abs_error, max = expected + abs_error;
CHECK_LE(min, actual);
CHECK_GE(max, actual);
}
}
void RunF32x4UnOpTest(TestExecutionTier execution_tier, WasmOpcode opcode,
FloatUnOp expected_op, bool exact) {
WasmRunner<int32_t, float> r(execution_tier);
// Global to hold output.
float* g = r.builder().AddGlobal<float>(kWasmS128);
// Build fn to splat test value, perform unop, and write the result.
byte value = 0;
byte temp1 = r.AllocateLocal(kWasmS128);
BUILD(r, WASM_LOCAL_SET(temp1, WASM_SIMD_F32x4_SPLAT(WASM_LOCAL_GET(value))),
WASM_GLOBAL_SET(0, WASM_SIMD_UNOP(opcode, WASM_LOCAL_GET(temp1))),
WASM_ONE);
FOR_FLOAT32_INPUTS(x) {
if (!PlatformCanRepresent(x)) continue;
// Extreme values have larger errors so skip them for approximation tests.
if (!exact && IsExtreme(x)) continue;
float expected = expected_op(x);
#if V8_OS_AIX
if (!MightReverseSign<FloatUnOp>(expected_op))
expected = FpOpWorkaround<float>(x, expected);
#endif
if (!PlatformCanRepresent(expected)) continue;
r.Call(x);
for (int i = 0; i < 4; i++) {
float actual = LANE(g, i);
CheckFloatResult(x, x, expected, actual, exact);
}
}
FOR_FLOAT32_NAN_INPUTS(i) {
float x = bit_cast<float>(nan_test_array[i]);
if (!PlatformCanRepresent(x)) continue;
// Extreme values have larger errors so skip them for approximation tests.
if (!exact && IsExtreme(x)) continue;
float expected = expected_op(x);
if (!PlatformCanRepresent(expected)) continue;
r.Call(x);
for (int i = 0; i < 4; i++) {
float actual = LANE(g, i);
CheckFloatResult(x, x, expected, actual, exact);
}
}
}
void RunF32x4BinOpTest(TestExecutionTier execution_tier, WasmOpcode opcode,
FloatBinOp expected_op) {
WasmRunner<int32_t, float, float> r(execution_tier);
// Global to hold output.
float* g = r.builder().AddGlobal<float>(kWasmS128);
// Build fn to splat test values, perform binop, and write the result.
byte value1 = 0, value2 = 1;
byte temp1 = r.AllocateLocal(kWasmS128);
byte temp2 = r.AllocateLocal(kWasmS128);
BUILD(r, WASM_LOCAL_SET(temp1, WASM_SIMD_F32x4_SPLAT(WASM_LOCAL_GET(value1))),
WASM_LOCAL_SET(temp2, WASM_SIMD_F32x4_SPLAT(WASM_LOCAL_GET(value2))),
WASM_GLOBAL_SET(0, WASM_SIMD_BINOP(opcode, WASM_LOCAL_GET(temp1),
WASM_LOCAL_GET(temp2))),
WASM_ONE);
FOR_FLOAT32_INPUTS(x) {
if (!PlatformCanRepresent(x)) continue;
FOR_FLOAT32_INPUTS(y) {
if (!PlatformCanRepresent(y)) continue;
float expected = expected_op(x, y);
if (!PlatformCanRepresent(expected)) continue;
r.Call(x, y);
for (int i = 0; i < 4; i++) {
float actual = g[i];
CheckFloatResult(x, y, expected, actual, true /* exact */);
}
}
}
FOR_FLOAT32_NAN_INPUTS(i) {
float x = bit_cast<float>(nan_test_array[i]);
if (!PlatformCanRepresent(x)) continue;
FOR_FLOAT32_NAN_INPUTS(j) {
float y = bit_cast<float>(nan_test_array[j]);
if (!PlatformCanRepresent(y)) continue;
float expected = expected_op(x, y);
if (!PlatformCanRepresent(expected)) continue;
r.Call(x, y);
for (int i = 0; i < 4; i++) {
float actual = LANE(g, i);
CheckFloatResult(x, y, expected, actual, true /* exact */);
}
}
}
}
void RunF32x4CompareOpTest(TestExecutionTier execution_tier, WasmOpcode opcode,
FloatCompareOp expected_op) {
WasmRunner<int32_t, float, float> r(execution_tier);
// Set up global to hold mask output.
int32_t* g = r.builder().AddGlobal<int32_t>(kWasmS128);
// Build fn to splat test values, perform compare op, and write the result.
byte value1 = 0, value2 = 1;
byte temp1 = r.AllocateLocal(kWasmS128);
byte temp2 = r.AllocateLocal(kWasmS128);
BUILD(r, WASM_LOCAL_SET(temp1, WASM_SIMD_F32x4_SPLAT(WASM_LOCAL_GET(value1))),
WASM_LOCAL_SET(temp2, WASM_SIMD_F32x4_SPLAT(WASM_LOCAL_GET(value2))),
WASM_GLOBAL_SET(0, WASM_SIMD_BINOP(opcode, WASM_LOCAL_GET(temp1),
WASM_LOCAL_GET(temp2))),
WASM_ONE);
FOR_FLOAT32_INPUTS(x) {
if (!PlatformCanRepresent(x)) continue;
FOR_FLOAT32_INPUTS(y) {
if (!PlatformCanRepresent(y)) continue;
float diff = x - y; // Model comparison as subtraction.
if (!PlatformCanRepresent(diff)) continue;
r.Call(x, y);
int32_t expected = expected_op(x, y);
for (int i = 0; i < 4; i++) {
CHECK_EQ(expected, LANE(g, i));
}
}
}
}
bool IsExtreme(double x) {
double abs_x = std::fabs(x);
const double kSmallFloatThreshold = 1.0e-298;
const double kLargeFloatThreshold = 1.0e298;
return abs_x != 0.0f && // 0 or -0 are fine.
(abs_x < kSmallFloatThreshold || abs_x > kLargeFloatThreshold);
}
bool IsSameNan(double expected, double actual) {
// Sign is non-deterministic.
uint64_t expected_bits = bit_cast<uint64_t>(expected) & ~0x8000000000000000;
uint64_t actual_bits = bit_cast<uint64_t>(actual) & ~0x8000000000000000;
// Some implementations convert signaling NaNs to quiet NaNs.
return (expected_bits == actual_bits) ||
((expected_bits | 0x0008000000000000) == actual_bits);
}
bool IsCanonical(double actual) {
uint64_t actual_bits = bit_cast<uint64_t>(actual);
// Canonical NaN has quiet bit and no payload.
return (actual_bits & 0xFFF8000000000000) == actual_bits;
}
void CheckDoubleResult(double x, double y, double expected, double actual,
bool exact) {
if (std::isnan(expected)) {
CHECK(std::isnan(actual));
if (std::isnan(x) && IsSameNan(x, actual)) return;
if (std::isnan(y) && IsSameNan(y, actual)) return;
if (IsSameNan(expected, actual)) return;
if (IsCanonical(actual)) return;
// This is expected to assert; it's useful for debugging.
CHECK_EQ(bit_cast<uint64_t>(expected), bit_cast<uint64_t>(actual));
} else {
if (exact) {
CHECK_EQ(expected, actual);
// The sign of 0's must match.
CHECK_EQ(std::signbit(expected), std::signbit(actual));
return;
}
// Otherwise, perform an approximate equality test. First check for
// equality to handle +/-Infinity where approximate equality doesn't work.
if (expected == actual) return;
// 1% error allows all platforms to pass easily.
constexpr double kApproximationError = 0.01f;
double abs_error = std::abs(expected) * kApproximationError,
min = expected - abs_error, max = expected + abs_error;
CHECK_LE(min, actual);
CHECK_GE(max, actual);
}
}
void RunF64x2UnOpTest(TestExecutionTier execution_tier, WasmOpcode opcode,
DoubleUnOp expected_op, bool exact) {
WasmRunner<int32_t, double> r(execution_tier);
// Global to hold output.
double* g = r.builder().AddGlobal<double>(kWasmS128);
// Build fn to splat test value, perform unop, and write the result.
byte value = 0;
byte temp1 = r.AllocateLocal(kWasmS128);
BUILD(r, WASM_LOCAL_SET(temp1, WASM_SIMD_F64x2_SPLAT(WASM_LOCAL_GET(value))),
WASM_GLOBAL_SET(0, WASM_SIMD_UNOP(opcode, WASM_LOCAL_GET(temp1))),
WASM_ONE);
FOR_FLOAT64_INPUTS(x) {
if (!PlatformCanRepresent(x)) continue;
// Extreme values have larger errors so skip them for approximation tests.
if (!exact && IsExtreme(x)) continue;
double expected = expected_op(x);
#if V8_OS_AIX
if (!MightReverseSign<DoubleUnOp>(expected_op))
expected = FpOpWorkaround<double>(x, expected);
#endif
if (!PlatformCanRepresent(expected)) continue;
r.Call(x);
for (int i = 0; i < 2; i++) {
double actual = LANE(g, i);
CheckDoubleResult(x, x, expected, actual, exact);
}
}
FOR_FLOAT64_NAN_INPUTS(i) {
double x = bit_cast<double>(double_nan_test_array[i]);
if (!PlatformCanRepresent(x)) continue;
// Extreme values have larger errors so skip them for approximation tests.
if (!exact && IsExtreme(x)) continue;
double expected = expected_op(x);
if (!PlatformCanRepresent(expected)) continue;
r.Call(x);
for (int i = 0; i < 2; i++) {
double actual = LANE(g, i);
CheckDoubleResult(x, x, expected, actual, exact);
}
}
}
void RunF64x2BinOpTest(TestExecutionTier execution_tier, WasmOpcode opcode,
DoubleBinOp expected_op) {
WasmRunner<int32_t, double, double> r(execution_tier);
// Global to hold output.
double* g = r.builder().AddGlobal<double>(kWasmS128);
// Build fn to splat test value, perform binop, and write the result.
byte value1 = 0, value2 = 1;
byte temp1 = r.AllocateLocal(kWasmS128);
byte temp2 = r.AllocateLocal(kWasmS128);
BUILD(r, WASM_LOCAL_SET(temp1, WASM_SIMD_F64x2_SPLAT(WASM_LOCAL_GET(value1))),
WASM_LOCAL_SET(temp2, WASM_SIMD_F64x2_SPLAT(WASM_LOCAL_GET(value2))),
WASM_GLOBAL_SET(0, WASM_SIMD_BINOP(opcode, WASM_LOCAL_GET(temp1),
WASM_LOCAL_GET(temp2))),
WASM_ONE);
FOR_FLOAT64_INPUTS(x) {
if (!PlatformCanRepresent(x)) continue;
FOR_FLOAT64_INPUTS(y) {
if (!PlatformCanRepresent(x)) continue;
double expected = expected_op(x, y);
if (!PlatformCanRepresent(expected)) continue;
r.Call(x, y);
for (int i = 0; i < 2; i++) {
double actual = LANE(g, i);
CheckDoubleResult(x, y, expected, actual, true /* exact */);
}
}
}
FOR_FLOAT64_NAN_INPUTS(i) {
double x = bit_cast<double>(double_nan_test_array[i]);
if (!PlatformCanRepresent(x)) continue;
FOR_FLOAT64_NAN_INPUTS(j) {
double y = bit_cast<double>(double_nan_test_array[j]);
double expected = expected_op(x, y);
if (!PlatformCanRepresent(expected)) continue;
r.Call(x, y);
for (int i = 0; i < 2; i++) {
double actual = LANE(g, i);
CheckDoubleResult(x, y, expected, actual, true /* exact */);
}
}
}
}
void RunF64x2CompareOpTest(TestExecutionTier execution_tier, WasmOpcode opcode,
DoubleCompareOp expected_op) {
WasmRunner<int32_t, double, double> r(execution_tier);
// Set up global to hold mask output.
int64_t* g = r.builder().AddGlobal<int64_t>(kWasmS128);
// Build fn to splat test values, perform compare op, and write the result.
byte value1 = 0, value2 = 1;
byte temp1 = r.AllocateLocal(kWasmS128);
byte temp2 = r.AllocateLocal(kWasmS128);
// Make the lanes of each temp compare differently:
// temp1 = y, x and temp2 = y, y.
BUILD(r, WASM_LOCAL_SET(temp1, WASM_SIMD_F64x2_SPLAT(WASM_LOCAL_GET(value1))),
WASM_LOCAL_SET(temp1,
WASM_SIMD_F64x2_REPLACE_LANE(1, WASM_LOCAL_GET(temp1),
WASM_LOCAL_GET(value2))),
WASM_LOCAL_SET(temp2, WASM_SIMD_F64x2_SPLAT(WASM_LOCAL_GET(value2))),
WASM_GLOBAL_SET(0, WASM_SIMD_BINOP(opcode, WASM_LOCAL_GET(temp1),
WASM_LOCAL_GET(temp2))),
WASM_ONE);
FOR_FLOAT64_INPUTS(x) {
if (!PlatformCanRepresent(x)) continue;
FOR_FLOAT64_INPUTS(y) {
if (!PlatformCanRepresent(y)) continue;
double diff = x - y; // Model comparison as subtraction.
if (!PlatformCanRepresent(diff)) continue;
r.Call(x, y);
int64_t expected0 = expected_op(x, y);
int64_t expected1 = expected_op(y, y);
CHECK_EQ(expected0, LANE(g, 0));
CHECK_EQ(expected1, LANE(g, 1));
}
}
}
} // namespace wasm
} // namespace internal
} // namespace v8
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