v8/test/cctest/wasm/test-run-wasm-simd.cc

// 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 <type_traits>

#include "src/base/bits.h"
#include "src/base/overflowing-math.h"
#include "src/codegen/assembler-inl.h"
#include "test/cctest/cctest.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 {
namespace test_run_wasm_simd {

namespace {

using FloatUnOp = float (*)(float);
using FloatBinOp = float (*)(float, float);
using FloatCompareOp = int (*)(float, float);
using Int64UnOp = int64_t (*)(int64_t);
using Int64BinOp = int64_t (*)(int64_t, int64_t);
using Int64ShiftOp = int64_t (*)(int64_t, int);
using Int32UnOp = int32_t (*)(int32_t);
using Int32BinOp = int32_t (*)(int32_t, int32_t);
using Int32CompareOp = int (*)(int32_t, int32_t);
using Int32ShiftOp = int32_t (*)(int32_t, int);
using Int16UnOp = int16_t (*)(int16_t);
using Int16BinOp = int16_t (*)(int16_t, int16_t);
using Int16CompareOp = int (*)(int16_t, int16_t);
using Int16ShiftOp = int16_t (*)(int16_t, int);
using Int8UnOp = int8_t (*)(int8_t);
using Int8BinOp = int8_t (*)(int8_t, int8_t);
using Int8CompareOp = int (*)(int8_t, int8_t);
using Int8ShiftOp = int8_t (*)(int8_t, int);

#define WASM_SIMD_TEST(name)                                          \
  void RunWasm_##name##_Impl(LowerSimd lower_simd,                    \
                             ExecutionTier execution_tier);           \
  TEST(RunWasm_##name##_turbofan) {                                   \
    EXPERIMENTAL_FLAG_SCOPE(simd);                                    \
    RunWasm_##name##_Impl(kNoLowerSimd, ExecutionTier::kTurbofan);    \
  }                                                                   \
  TEST(RunWasm_##name##_interpreter) {                                \
    EXPERIMENTAL_FLAG_SCOPE(simd);                                    \
    RunWasm_##name##_Impl(kNoLowerSimd, ExecutionTier::kInterpreter); \
  }                                                                   \
  TEST(RunWasm_##name##_simd_lowered) {                               \
    EXPERIMENTAL_FLAG_SCOPE(simd);                                    \
    RunWasm_##name##_Impl(kLowerSimd, ExecutionTier::kTurbofan);      \
  }                                                                   \
  void RunWasm_##name##_Impl(LowerSimd lower_simd, ExecutionTier execution_tier)

// Generic expected value functions.
template <typename T, typename = typename std::enable_if<
                          std::is_floating_point<T>::value>::type>
T Negate(T a) {
  return -a;
}

// For signed integral types, use base::AddWithWraparound.
template <typename T, typename = typename std::enable_if<
                          std::is_floating_point<T>::value>::type>
T Add(T a, T b) {
  return a + b;
}

// For signed integral types, use base::SubWithWraparound.
template <typename T, typename = typename std::enable_if<
                          std::is_floating_point<T>::value>::type>
T Sub(T a, T b) {
  return a - b;
}

// For signed integral types, use base::MulWithWraparound.
template <typename T, typename = typename std::enable_if<
                          std::is_floating_point<T>::value>::type>
T Mul(T a, T b) {
  return a * b;
}

template <typename T>
T Minimum(T a, T b) {
  return a <= b ? a : b;
}

template <typename T>
T Maximum(T a, T b) {
  return a >= b ? a : b;
}

template <typename T>
T UnsignedMinimum(T a, T b) {
  using UnsignedT = typename std::make_unsigned<T>::type;
  return static_cast<UnsignedT>(a) <= static_cast<UnsignedT>(b) ? a : b;
}

template <typename T>
T UnsignedMaximum(T a, T b) {
  using UnsignedT = typename std::make_unsigned<T>::type;
  return static_cast<UnsignedT>(a) >= static_cast<UnsignedT>(b) ? a : b;
}

int Equal(float a, float b) { return a == b ? -1 : 0; }

template <typename T>
T Equal(T a, T b) {
  return a == b ? -1 : 0;
}

int NotEqual(float a, float b) { return a != b ? -1 : 0; }

template <typename T>
T NotEqual(T a, T b) {
  return a != b ? -1 : 0;
}

int Less(float a, float b) { return a < b ? -1 : 0; }

template <typename T>
T Less(T a, T b) {
  return a < b ? -1 : 0;
}

int LessEqual(float a, float b) { return a <= b ? -1 : 0; }

template <typename T>
T LessEqual(T a, T b) {
  return a <= b ? -1 : 0;
}

int Greater(float a, float b) { return a > b ? -1 : 0; }

template <typename T>
T Greater(T a, T b) {
  return a > b ? -1 : 0;
}

int GreaterEqual(float a, float b) { return a >= b ? -1 : 0; }

template <typename T>
T GreaterEqual(T a, T b) {
  return a >= b ? -1 : 0;
}

template <typename T>
T UnsignedLess(T a, T b) {
  using UnsignedT = typename std::make_unsigned<T>::type;
  return static_cast<UnsignedT>(a) < static_cast<UnsignedT>(b) ? -1 : 0;
}

template <typename T>
T UnsignedLessEqual(T a, T b) {
  using UnsignedT = typename std::make_unsigned<T>::type;
  return static_cast<UnsignedT>(a) <= static_cast<UnsignedT>(b) ? -1 : 0;
}

template <typename T>
T UnsignedGreater(T a, T b) {
  using UnsignedT = typename std::make_unsigned<T>::type;
  return static_cast<UnsignedT>(a) > static_cast<UnsignedT>(b) ? -1 : 0;
}

template <typename T>
T UnsignedGreaterEqual(T a, T b) {
  using UnsignedT = typename std::make_unsigned<T>::type;
  return static_cast<UnsignedT>(a) >= static_cast<UnsignedT>(b) ? -1 : 0;
}

template <typename T>
T LogicalShiftLeft(T a, int shift) {
  using UnsignedT = typename std::make_unsigned<T>::type;
  return static_cast<UnsignedT>(a) << shift;
}

template <typename T>
T LogicalShiftRight(T a, int shift) {
  using UnsignedT = typename std::make_unsigned<T>::type;
  return static_cast<UnsignedT>(a) >> shift;
}

template <typename T>
T Clamp(int64_t value) {
  static_assert(sizeof(int64_t) > sizeof(T), "T must be int32_t or smaller");
  int64_t min = static_cast<int64_t>(std::numeric_limits<T>::min());
  int64_t max = static_cast<int64_t>(std::numeric_limits<T>::max());
  int64_t clamped = std::max(min, std::min(max, value));
  return static_cast<T>(clamped);
}

template <typename T>
int64_t Widen(T value) {
  static_assert(sizeof(int64_t) > sizeof(T), "T must be int32_t or smaller");
  return static_cast<int64_t>(value);
}

template <typename T>
int64_t UnsignedWiden(T value) {
  static_assert(sizeof(int64_t) > sizeof(T), "T must be int32_t or smaller");
  using UnsignedT = typename std::make_unsigned<T>::type;
  return static_cast<int64_t>(static_cast<UnsignedT>(value));
}

template <typename T>
T Narrow(int64_t value) {
  return Clamp<T>(value);
}

template <typename T>
T UnsignedNarrow(int64_t value) {
  static_assert(sizeof(int64_t) > sizeof(T), "T must be int32_t or smaller");
  using UnsignedT = typename std::make_unsigned<T>::type;
  return static_cast<T>(Clamp<UnsignedT>(value & 0xFFFFFFFFu));
}

template <typename T>
T AddSaturate(T a, T b) {
  return Clamp<T>(Widen(a) + Widen(b));
}

template <typename T>
T SubSaturate(T a, T b) {
  return Clamp<T>(Widen(a) - Widen(b));
}

template <typename T>
T UnsignedAddSaturate(T a, T b) {
  using UnsignedT = typename std::make_unsigned<T>::type;
  return Clamp<UnsignedT>(UnsignedWiden(a) + UnsignedWiden(b));
}

template <typename T>
T UnsignedSubSaturate(T a, T b) {
  using UnsignedT = typename std::make_unsigned<T>::type;
  return Clamp<UnsignedT>(UnsignedWiden(a) - UnsignedWiden(b));
}

template <typename T>
T And(T a, T b) {
  return a & b;
}

template <typename T>
T Or(T a, T b) {
  return a | b;
}

template <typename T>
T Xor(T a, T b) {
  return a ^ b;
}

template <typename T>
T Not(T a) {
  return ~a;
}

template <typename T>
T LogicalNot(T a) {
  return a == 0 ? -1 : 0;
}

template <typename T>
T Sqrt(T a) {
  return std::sqrt(a);
}

}  // namespace

#define WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lane_value, lane_index) \
  WASM_IF(WASM_##LANE_TYPE##_NE(WASM_GET_LOCAL(lane_value),                  \
                                WASM_SIMD_##TYPE##_EXTRACT_LANE(             \
                                    lane_index, WASM_GET_LOCAL(value))),     \
          WASM_RETURN1(WASM_ZERO))

#define TO_BYTE(val) static_cast<byte>(val)
#define WASM_SIMD_OP(op) kSimdPrefix, TO_BYTE(op)
#define WASM_SIMD_SPLAT(Type, ...) __VA_ARGS__, WASM_SIMD_OP(kExpr##Type##Splat)
#define WASM_SIMD_UNOP(op, x) x, WASM_SIMD_OP(op)
#define WASM_SIMD_BINOP(op, x, y) x, y, WASM_SIMD_OP(op)
#define WASM_SIMD_SHIFT_OP(op, shift, x) x, WASM_SIMD_OP(op), TO_BYTE(shift)
#define WASM_SIMD_CONCAT_OP(op, bytes, x, y) \
  x, y, WASM_SIMD_OP(op), TO_BYTE(bytes)
#define WASM_SIMD_SELECT(format, x, y, z) x, y, z, WASM_SIMD_OP(kExprS128Select)
#define WASM_SIMD_F64x2_SPLAT(x) WASM_SIMD_SPLAT(F64x2, x)
#define WASM_SIMD_F32x4_SPLAT(x) WASM_SIMD_SPLAT(F32x4, x)
#define WASM_SIMD_F32x4_EXTRACT_LANE(lane, x) \
  x, WASM_SIMD_OP(kExprF32x4ExtractLane), TO_BYTE(lane)
#define WASM_SIMD_F32x4_REPLACE_LANE(lane, x, y) \
  x, y, WASM_SIMD_OP(kExprF32x4ReplaceLane), TO_BYTE(lane)

#define WASM_SIMD_I64x2_SPLAT(x) WASM_SIMD_SPLAT(I64x2, x)
#define WASM_SIMD_I64x2_EXTRACT_LANE(lane, x) \
  x, WASM_SIMD_OP(kExprI64x2ExtractLane), TO_BYTE(lane)
#define WASM_SIMD_I64x2_REPLACE_LANE(lane, x, y) \
  x, y, WASM_SIMD_OP(kExprI64x2ReplaceLane), TO_BYTE(lane)

#define WASM_SIMD_I32x4_SPLAT(x) WASM_SIMD_SPLAT(I32x4, x)
#define WASM_SIMD_I32x4_EXTRACT_LANE(lane, x) \
  x, WASM_SIMD_OP(kExprI32x4ExtractLane), TO_BYTE(lane)
#define WASM_SIMD_I32x4_REPLACE_LANE(lane, x, y) \
  x, y, WASM_SIMD_OP(kExprI32x4ReplaceLane), TO_BYTE(lane)

#define WASM_SIMD_I16x8_SPLAT(x) WASM_SIMD_SPLAT(I16x8, x)
#define WASM_SIMD_I16x8_EXTRACT_LANE(lane, x) \
  x, WASM_SIMD_OP(kExprI16x8ExtractLane), TO_BYTE(lane)
#define WASM_SIMD_I16x8_REPLACE_LANE(lane, x, y) \
  x, y, WASM_SIMD_OP(kExprI16x8ReplaceLane), TO_BYTE(lane)

#define WASM_SIMD_I8x16_SPLAT(x) WASM_SIMD_SPLAT(I8x16, x)
#define WASM_SIMD_I8x16_EXTRACT_LANE(lane, x) \
  x, WASM_SIMD_OP(kExprI8x16ExtractLane), TO_BYTE(lane)
#define WASM_SIMD_I8x16_REPLACE_LANE(lane, x, y) \
  x, y, WASM_SIMD_OP(kExprI8x16ReplaceLane), TO_BYTE(lane)

#define WASM_SIMD_S8x16_SHUFFLE_OP(opcode, m, x, y)                        \
  x, y, WASM_SIMD_OP(opcode), TO_BYTE(m[0]), TO_BYTE(m[1]), TO_BYTE(m[2]), \
      TO_BYTE(m[3]), TO_BYTE(m[4]), TO_BYTE(m[5]), TO_BYTE(m[6]),          \
      TO_BYTE(m[7]), TO_BYTE(m[8]), TO_BYTE(m[9]), TO_BYTE(m[10]),         \
      TO_BYTE(m[11]), TO_BYTE(m[12]), TO_BYTE(m[13]), TO_BYTE(m[14]),      \
      TO_BYTE(m[15])

#define WASM_SIMD_LOAD_MEM(index) \
  index, WASM_SIMD_OP(kExprS128LoadMem), ZERO_ALIGNMENT, ZERO_OFFSET
#define WASM_SIMD_STORE_MEM(index, val) \
  index, val, WASM_SIMD_OP(kExprS128StoreMem), ZERO_ALIGNMENT, ZERO_OFFSET

// Runs tests of compiled code, using the interpreter as a reference.
#define WASM_SIMD_COMPILED_TEST(name)                              \
  void RunWasm_##name##_Impl(LowerSimd lower_simd,                 \
                             ExecutionTier execution_tier);        \
  TEST(RunWasm_##name##_turbofan) {                                \
    EXPERIMENTAL_FLAG_SCOPE(simd);                                 \
    RunWasm_##name##_Impl(kNoLowerSimd, ExecutionTier::kTurbofan); \
  }                                                                \
  TEST(RunWasm_##name##_simd_lowered) {                            \
    EXPERIMENTAL_FLAG_SCOPE(simd);                                 \
    RunWasm_##name##_Impl(kLowerSimd, ExecutionTier::kTurbofan);   \
  }                                                                \
  void RunWasm_##name##_Impl(LowerSimd lower_simd, ExecutionTier execution_tier)

// The macro below disables tests lowering for certain nodes where the simd
// lowering doesn't work correctly. Early return here if the CPU does not
// support SIMD as the graph will be implicitly lowered in that case.
#define WASM_SIMD_TEST_NO_LOWERING(name)                              \
  void RunWasm_##name##_Impl(LowerSimd lower_simd,                    \
                             ExecutionTier execution_tier);           \
  TEST(RunWasm_##name##_turbofan) {                                   \
    if (!CpuFeatures::SupportsWasmSimd128()) return;                  \
    EXPERIMENTAL_FLAG_SCOPE(simd);                                    \
    RunWasm_##name##_Impl(kNoLowerSimd, ExecutionTier::kTurbofan);    \
  }                                                                   \
  TEST(RunWasm_##name##_interpreter) {                                \
    EXPERIMENTAL_FLAG_SCOPE(simd);                                    \
    RunWasm_##name##_Impl(kNoLowerSimd, ExecutionTier::kInterpreter); \
  }                                                                   \
  void RunWasm_##name##_Impl(LowerSimd lower_simd, ExecutionTier execution_tier)

// Returns true if the platform can represent the result.
bool PlatformCanRepresent(float x) {
#if V8_TARGET_ARCH_ARM
  return std::fpclassify(x) != FP_SUBNORMAL;
#else
  return true;
#endif
}

// Returns true for very small and very large numbers. We skip these test
// values for the approximation instructions, which don't work at the extremes.
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);
}

#if V8_TARGET_ARCH_X64
WASM_SIMD_TEST_NO_LOWERING(F64x2Splat) {
  WasmRunner<int32_t, double> r(execution_tier, lower_simd);
  // Set up a global to hold output vector.
  double* g = r.builder().AddGlobal<double>(kWasmS128);
  byte param1 = 0;
  BUILD(r, WASM_SET_GLOBAL(0, WASM_SIMD_F64x2_SPLAT(WASM_GET_LOCAL(param1))),
        WASM_ONE);

  FOR_FLOAT64_INPUTS(x) {
    r.Call(x);
    double expected = x;
    for (int i = 0; i < 2; i++) {
      double actual = ReadLittleEndianValue<double>(&g[i]);
      if (std::isnan(expected)) {
        CHECK(std::isnan(actual));
      } else {
        CHECK_EQ(actual, expected);
      }
    }
  }
}
#endif  // V8_TARGET_ARCH_X64

WASM_SIMD_TEST(F32x4Splat) {
  WasmRunner<int32_t, float> r(execution_tier, lower_simd);
  // Set up a global to hold output vector.
  float* g = r.builder().AddGlobal<float>(kWasmS128);
  byte param1 = 0;
  BUILD(r, WASM_SET_GLOBAL(0, WASM_SIMD_F32x4_SPLAT(WASM_GET_LOCAL(param1))),
        WASM_ONE);

  FOR_FLOAT32_INPUTS(x) {
    r.Call(x);
    float expected = x;
    for (int i = 0; i < 4; i++) {
      float actual = ReadLittleEndianValue<float>(&g[i]);
      if (std::isnan(expected)) {
        CHECK(std::isnan(actual));
      } else {
        CHECK_EQ(actual, expected);
      }
    }
  }
}

WASM_SIMD_TEST(F32x4ReplaceLane) {
  WasmRunner<int32_t> r(execution_tier, lower_simd);
  // Set up a global to hold input/output vector.
  float* g = r.builder().AddGlobal<float>(kWasmS128);
  // Build function to replace each lane with its (FP) index.
  byte temp1 = r.AllocateLocal(kWasmS128);
  BUILD(r, WASM_SET_LOCAL(temp1, WASM_SIMD_F32x4_SPLAT(WASM_F32(3.14159f))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_F32x4_REPLACE_LANE(
                                  0, WASM_GET_LOCAL(temp1), WASM_F32(0.0f))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_F32x4_REPLACE_LANE(
                                  1, WASM_GET_LOCAL(temp1), WASM_F32(1.0f))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_F32x4_REPLACE_LANE(
                                  2, WASM_GET_LOCAL(temp1), WASM_F32(2.0f))),
        WASM_SET_GLOBAL(0, WASM_SIMD_F32x4_REPLACE_LANE(
                               3, WASM_GET_LOCAL(temp1), WASM_F32(3.0f))),
        WASM_ONE);

  r.Call();
  for (int i = 0; i < 4; i++) {
    CHECK_EQ(static_cast<float>(i), ReadLittleEndianValue<float>(&g[i]));
  }
}

// Tests both signed and unsigned conversion.
// v8:8425 tracks this test being enabled in the interpreter.
WASM_SIMD_COMPILED_TEST(F32x4ConvertI32x4) {
  WasmRunner<int32_t, int32_t> r(execution_tier, lower_simd);
  // Create two output vectors to hold signed and unsigned results.
  float* g0 = r.builder().AddGlobal<float>(kWasmS128);
  float* g1 = r.builder().AddGlobal<float>(kWasmS128);
  // Build fn to splat test value, perform conversions, and write the results.
  byte value = 0;
  byte temp1 = r.AllocateLocal(kWasmS128);
  BUILD(r, WASM_SET_LOCAL(temp1, WASM_SIMD_I32x4_SPLAT(WASM_GET_LOCAL(value))),
        WASM_SET_GLOBAL(
            0, WASM_SIMD_UNOP(kExprF32x4SConvertI32x4, WASM_GET_LOCAL(temp1))),
        WASM_SET_GLOBAL(
            1, WASM_SIMD_UNOP(kExprF32x4UConvertI32x4, WASM_GET_LOCAL(temp1))),
        WASM_ONE);

  FOR_INT32_INPUTS(x) {
    r.Call(x);
    float expected_signed = static_cast<float>(x);
    float expected_unsigned = static_cast<float>(static_cast<uint32_t>(x));
    for (int i = 0; i < 4; i++) {
      CHECK_EQ(expected_signed, ReadLittleEndianValue<float>(&g0[i]));
      CHECK_EQ(expected_unsigned, ReadLittleEndianValue<float>(&g1[i]));
    }
  }
}

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 = true) {
  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);
  }
}

// Test some values not included in the float inputs from value_helper. These
// tests are useful for opcodes that are synthesized during code gen, like Min
// and Max on ia32 and x64.
static constexpr uint32_t nan_test_array[] = {
    // Bit patterns of quiet NaNs and signaling NaNs, with or without
    // additional payload.
    0x7FC00000, 0xFFC00000, 0x7FFFFFFF, 0x7F800000, 0xFF800000, 0x7F876543,
    0xFF876543,
    // Both Infinities.
    0x7F800000, 0xFF800000,
    // Some "normal" numbers, 1 and -1.
    0x3F800000, 0xBF800000};

#define FOR_FLOAT32_NAN_INPUTS(i) \
  for (size_t i = 0; i < arraysize(nan_test_array); ++i)

void RunF32x4UnOpTest(ExecutionTier execution_tier, LowerSimd lower_simd,
                      WasmOpcode opcode, FloatUnOp expected_op,
                      bool exact = true) {
  WasmRunner<int32_t, float> r(execution_tier, lower_simd);
  // 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_SET_LOCAL(temp1, WASM_SIMD_F32x4_SPLAT(WASM_GET_LOCAL(value))),
        WASM_SET_GLOBAL(0, WASM_SIMD_UNOP(opcode, WASM_GET_LOCAL(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 (!PlatformCanRepresent(expected)) continue;
    r.Call(x);
    for (int i = 0; i < 4; i++) {
      float actual = ReadLittleEndianValue<float>(&g[i]);
      CheckFloatResult(x, x, expected, actual, exact);
    }
  }

  FOR_FLOAT32_NAN_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 (!PlatformCanRepresent(expected)) continue;
    r.Call(x);
    for (int i = 0; i < 4; i++) {
      float actual = ReadLittleEndianValue<float>(&g[i]);
      CheckFloatResult(x, x, expected, actual, exact);
    }
  }
}

WASM_SIMD_TEST(F32x4Abs) {
  RunF32x4UnOpTest(execution_tier, lower_simd, kExprF32x4Abs, std::abs);
}
WASM_SIMD_TEST(F32x4Neg) {
  RunF32x4UnOpTest(execution_tier, lower_simd, kExprF32x4Neg, Negate);
}

WASM_SIMD_TEST(F32x4RecipApprox) {
  RunF32x4UnOpTest(execution_tier, lower_simd, kExprF32x4RecipApprox,
                   base::Recip, false /* !exact */);
}

WASM_SIMD_TEST(F32x4RecipSqrtApprox) {
  RunF32x4UnOpTest(execution_tier, lower_simd, kExprF32x4RecipSqrtApprox,
                   base::RecipSqrt, false /* !exact */);
}

void RunF32x4BinOpTest(ExecutionTier execution_tier, LowerSimd lower_simd,
                       WasmOpcode opcode, FloatBinOp expected_op) {
  WasmRunner<int32_t, float, float> r(execution_tier, lower_simd);
  // 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_SET_LOCAL(temp1, WASM_SIMD_F32x4_SPLAT(WASM_GET_LOCAL(value1))),
        WASM_SET_LOCAL(temp2, WASM_SIMD_F32x4_SPLAT(WASM_GET_LOCAL(value2))),
        WASM_SET_GLOBAL(0, WASM_SIMD_BINOP(opcode, WASM_GET_LOCAL(temp1),
                                           WASM_GET_LOCAL(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 = ReadLittleEndianValue<float>(&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 = ReadLittleEndianValue<float>(&g[i]);
        CheckFloatResult(x, y, expected, actual, true /* exact */);
      }
    }
  }
}

#undef FOR_FLOAT32_NAN_INPUTS

WASM_SIMD_TEST(F32x4Add) {
  RunF32x4BinOpTest(execution_tier, lower_simd, kExprF32x4Add, Add);
}
WASM_SIMD_TEST(F32x4Sub) {
  RunF32x4BinOpTest(execution_tier, lower_simd, kExprF32x4Sub, Sub);
}
WASM_SIMD_TEST(F32x4Mul) {
  RunF32x4BinOpTest(execution_tier, lower_simd, kExprF32x4Mul, Mul);
}
// v8:8425 tracks this test being enabled in the interpreter.
WASM_SIMD_COMPILED_TEST(F32x4Min) {
  RunF32x4BinOpTest(execution_tier, lower_simd, kExprF32x4Min, JSMin);
}
// v8:8425 tracks this test being enabled in the interpreter.
WASM_SIMD_COMPILED_TEST(F32x4Max) {
  RunF32x4BinOpTest(execution_tier, lower_simd, kExprF32x4Max, JSMax);
}

void RunF32x4CompareOpTest(ExecutionTier execution_tier, LowerSimd lower_simd,
                           WasmOpcode opcode, FloatCompareOp expected_op) {
  WasmRunner<int32_t, float, float> r(execution_tier, lower_simd);
  // 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_SET_LOCAL(temp1, WASM_SIMD_F32x4_SPLAT(WASM_GET_LOCAL(value1))),
        WASM_SET_LOCAL(temp2, WASM_SIMD_F32x4_SPLAT(WASM_GET_LOCAL(value2))),
        WASM_SET_GLOBAL(0, WASM_SIMD_BINOP(opcode, WASM_GET_LOCAL(temp1),
                                           WASM_GET_LOCAL(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, ReadLittleEndianValue<int32_t>(&g[i]));
      }
    }
  }
}

WASM_SIMD_TEST(F32x4Eq) {
  RunF32x4CompareOpTest(execution_tier, lower_simd, kExprF32x4Eq, Equal);
}

WASM_SIMD_TEST(F32x4Ne) {
  RunF32x4CompareOpTest(execution_tier, lower_simd, kExprF32x4Ne, NotEqual);
}

WASM_SIMD_TEST(F32x4Gt) {
  RunF32x4CompareOpTest(execution_tier, lower_simd, kExprF32x4Gt, Greater);
}

WASM_SIMD_TEST(F32x4Ge) {
  RunF32x4CompareOpTest(execution_tier, lower_simd, kExprF32x4Ge, GreaterEqual);
}

WASM_SIMD_TEST(F32x4Lt) {
  RunF32x4CompareOpTest(execution_tier, lower_simd, kExprF32x4Lt, Less);
}

WASM_SIMD_TEST(F32x4Le) {
  RunF32x4CompareOpTest(execution_tier, lower_simd, kExprF32x4Le, LessEqual);
}

#if V8_TARGET_ARCH_X64
WASM_SIMD_TEST_NO_LOWERING(I64x2Splat) {
  WasmRunner<int32_t, int64_t> r(execution_tier, lower_simd);
  // Set up a global to hold output vector.
  int64_t* g = r.builder().AddGlobal<int64_t>(kWasmS128);
  byte param1 = 0;
  BUILD(r, WASM_SET_GLOBAL(0, WASM_SIMD_I64x2_SPLAT(WASM_GET_LOCAL(param1))),
        WASM_ONE);

  FOR_INT64_INPUTS(x) {
    r.Call(x);
    int64_t expected = x;
    for (int i = 0; i < 2; i++) {
      int64_t actual = ReadLittleEndianValue<int64_t>(&g[i]);
      CHECK_EQ(actual, expected);
    }
  }
}

WASM_SIMD_TEST_NO_LOWERING(I64x2ExtractWithF64x2) {
  WasmRunner<int64_t> r(execution_tier, lower_simd);
  BUILD(r, WASM_IF_ELSE_L(
               WASM_I64_EQ(WASM_SIMD_I64x2_EXTRACT_LANE(
                               0, WASM_SIMD_F64x2_SPLAT(WASM_F64(1e15))),
                           WASM_I64_REINTERPRET_F64(WASM_F64(1e15))),
               WASM_I64V(1), WASM_I64V(0)));
  CHECK_EQ(1, r.Call());
}

WASM_SIMD_TEST_NO_LOWERING(I64x2ReplaceLane) {
  WasmRunner<int32_t> r(execution_tier, lower_simd);
  // Set up a global to hold input/output vector.
  int64_t* g = r.builder().AddGlobal<int64_t>(kWasmS128);
  // Build function to replace each lane with its index.
  byte temp1 = r.AllocateLocal(kWasmS128);
  BUILD(r, WASM_SET_LOCAL(temp1, WASM_SIMD_I64x2_SPLAT(WASM_I64V(-1))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I64x2_REPLACE_LANE(
                                  0, WASM_GET_LOCAL(temp1), WASM_I64V(0))),
        WASM_SET_GLOBAL(0, WASM_SIMD_I64x2_REPLACE_LANE(
                               1, WASM_GET_LOCAL(temp1), WASM_I64V(1))),
        WASM_ONE);

  r.Call();
  for (int64_t i = 0; i < 2; i++) {
    CHECK_EQ(i, ReadLittleEndianValue<int64_t>(&g[i]));
  }
}

void RunI64x2UnOpTest(ExecutionTier execution_tier, LowerSimd lower_simd,
                      WasmOpcode opcode, Int64UnOp expected_op) {
  WasmRunner<int32_t, int64_t> r(execution_tier, lower_simd);
  // 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_SET_LOCAL(temp1, WASM_SIMD_I64x2_SPLAT(WASM_GET_LOCAL(value))),
        WASM_SET_GLOBAL(0, WASM_SIMD_UNOP(opcode, WASM_GET_LOCAL(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, ReadLittleEndianValue<int64_t>(&g[i]));
    }
  }
}

WASM_SIMD_TEST_NO_LOWERING(I64x2Neg) {
  RunI64x2UnOpTest(execution_tier, lower_simd, kExprI64x2Neg,
                   base::NegateWithWraparound);
}

void RunI64x2BinOpTest(ExecutionTier execution_tier, LowerSimd lower_simd,
                       WasmOpcode opcode, Int64BinOp expected_op) {
  WasmRunner<int32_t, int64_t, int64_t> r(execution_tier, lower_simd);
  // 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_SET_LOCAL(temp1, WASM_SIMD_I64x2_SPLAT(WASM_GET_LOCAL(value1))),
        WASM_SET_LOCAL(temp2, WASM_SIMD_I64x2_SPLAT(WASM_GET_LOCAL(value2))),
        WASM_SET_GLOBAL(0, WASM_SIMD_BINOP(opcode, WASM_GET_LOCAL(temp1),
                                           WASM_GET_LOCAL(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, ReadLittleEndianValue<int64_t>(&g[i]));
      }
    }
  }
}

WASM_SIMD_TEST_NO_LOWERING(I64x2Add) {
  RunI64x2BinOpTest(execution_tier, lower_simd, kExprI64x2Add,
                    base::AddWithWraparound);
}

WASM_SIMD_TEST_NO_LOWERING(I64x2Sub) {
  RunI64x2BinOpTest(execution_tier, lower_simd, kExprI64x2Sub,
                    base::SubWithWraparound);
}

void RunI64x2ShiftOpTest(ExecutionTier execution_tier, LowerSimd lower_simd,
                         WasmOpcode opcode, Int64ShiftOp expected_op) {
  for (int shift = 1; shift < 64; shift++) {
    WasmRunner<int32_t, int64_t> r(execution_tier, lower_simd);
    int64_t* g = r.builder().AddGlobal<int64_t>(kWasmS128);
    byte value = 0;
    byte simd1 = r.AllocateLocal(kWasmS128);
    BUILD(r,
          WASM_SET_LOCAL(simd1, WASM_SIMD_I64x2_SPLAT(WASM_GET_LOCAL(value))),
          WASM_SET_GLOBAL(
              0, WASM_SIMD_SHIFT_OP(opcode, shift, WASM_GET_LOCAL(simd1))),
          WASM_ONE);

    FOR_INT64_INPUTS(x) {
      r.Call(x);
      int64_t expected = expected_op(x, shift);
      for (int i = 0; i < 2; i++) {
        CHECK_EQ(expected, ReadLittleEndianValue<int64_t>(&g[i]));
      }
    }
  }
}

WASM_SIMD_TEST_NO_LOWERING(I64x2Shl) {
  RunI64x2ShiftOpTest(execution_tier, lower_simd, kExprI64x2Shl,
                      LogicalShiftLeft);
}

WASM_SIMD_TEST_NO_LOWERING(I64x2ShrS) {
  RunI64x2ShiftOpTest(execution_tier, lower_simd, kExprI64x2ShrS,
                      ArithmeticShiftRight);
}

WASM_SIMD_TEST_NO_LOWERING(I64x2ShrU) {
  RunI64x2ShiftOpTest(execution_tier, lower_simd, kExprI64x2ShrU,
                      LogicalShiftRight);
}
#endif  // V8_TARGET_ARCH_X64

WASM_SIMD_TEST(I32x4Splat) {
  WasmRunner<int32_t, int32_t> r(execution_tier, lower_simd);
  // Set up a global to hold output vector.
  int32_t* g = r.builder().AddGlobal<int32_t>(kWasmS128);
  byte param1 = 0;
  BUILD(r, WASM_SET_GLOBAL(0, WASM_SIMD_I32x4_SPLAT(WASM_GET_LOCAL(param1))),
        WASM_ONE);

  FOR_INT32_INPUTS(x) {
    r.Call(x);
    int32_t expected = x;
    for (int i = 0; i < 4; i++) {
      int32_t actual = ReadLittleEndianValue<int32_t>(&g[i]);
      CHECK_EQ(actual, expected);
    }
  }
}

WASM_SIMD_TEST(I32x4ReplaceLane) {
  WasmRunner<int32_t> r(execution_tier, lower_simd);
  // Set up a global to hold input/output vector.
  int32_t* g = r.builder().AddGlobal<int32_t>(kWasmS128);
  // Build function to replace each lane with its index.
  byte temp1 = r.AllocateLocal(kWasmS128);
  BUILD(r, WASM_SET_LOCAL(temp1, WASM_SIMD_I32x4_SPLAT(WASM_I32V(-1))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I32x4_REPLACE_LANE(
                                  0, WASM_GET_LOCAL(temp1), WASM_I32V(0))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I32x4_REPLACE_LANE(
                                  1, WASM_GET_LOCAL(temp1), WASM_I32V(1))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I32x4_REPLACE_LANE(
                                  2, WASM_GET_LOCAL(temp1), WASM_I32V(2))),
        WASM_SET_GLOBAL(0, WASM_SIMD_I32x4_REPLACE_LANE(
                               3, WASM_GET_LOCAL(temp1), WASM_I32V(3))),
        WASM_ONE);

  r.Call();
  for (int32_t i = 0; i < 4; i++) {
    CHECK_EQ(i, ReadLittleEndianValue<int32_t>(&g[i]));
  }
}

WASM_SIMD_TEST(I16x8Splat) {
  WasmRunner<int32_t, int32_t> r(execution_tier, lower_simd);
  // Set up a global to hold output vector.
  int16_t* g = r.builder().AddGlobal<int16_t>(kWasmS128);
  byte param1 = 0;
  BUILD(r, WASM_SET_GLOBAL(0, WASM_SIMD_I16x8_SPLAT(WASM_GET_LOCAL(param1))),
        WASM_ONE);

  FOR_INT16_INPUTS(x) {
    r.Call(x);
    int16_t expected = x;
    for (int i = 0; i < 8; i++) {
      int16_t actual = ReadLittleEndianValue<int16_t>(&g[i]);
      CHECK_EQ(actual, expected);
    }
  }
}

WASM_SIMD_TEST(I16x8ReplaceLane) {
  WasmRunner<int32_t> r(execution_tier, lower_simd);
  // Set up a global to hold input/output vector.
  int16_t* g = r.builder().AddGlobal<int16_t>(kWasmS128);
  // Build function to replace each lane with its index.
  byte temp1 = r.AllocateLocal(kWasmS128);
  BUILD(r, WASM_SET_LOCAL(temp1, WASM_SIMD_I16x8_SPLAT(WASM_I32V(-1))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I16x8_REPLACE_LANE(
                                  0, WASM_GET_LOCAL(temp1), WASM_I32V(0))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I16x8_REPLACE_LANE(
                                  1, WASM_GET_LOCAL(temp1), WASM_I32V(1))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I16x8_REPLACE_LANE(
                                  2, WASM_GET_LOCAL(temp1), WASM_I32V(2))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I16x8_REPLACE_LANE(
                                  3, WASM_GET_LOCAL(temp1), WASM_I32V(3))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I16x8_REPLACE_LANE(
                                  4, WASM_GET_LOCAL(temp1), WASM_I32V(4))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I16x8_REPLACE_LANE(
                                  5, WASM_GET_LOCAL(temp1), WASM_I32V(5))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I16x8_REPLACE_LANE(
                                  6, WASM_GET_LOCAL(temp1), WASM_I32V(6))),
        WASM_SET_GLOBAL(0, WASM_SIMD_I16x8_REPLACE_LANE(
                               7, WASM_GET_LOCAL(temp1), WASM_I32V(7))),
        WASM_ONE);

  r.Call();
  for (int16_t i = 0; i < 8; i++) {
    CHECK_EQ(i, ReadLittleEndianValue<int16_t>(&g[i]));
  }
}

WASM_SIMD_TEST(I8x16Splat) {
  WasmRunner<int32_t, int32_t> r(execution_tier, lower_simd);
  // Set up a global to hold output vector.
  int8_t* g = r.builder().AddGlobal<int8_t>(kWasmS128);
  byte param1 = 0;
  BUILD(r, WASM_SET_GLOBAL(0, WASM_SIMD_I8x16_SPLAT(WASM_GET_LOCAL(param1))),
        WASM_ONE);

  FOR_INT8_INPUTS(x) {
    r.Call(x);
    int8_t expected = x;
    for (int i = 0; i < 16; i++) {
      int8_t actual = ReadLittleEndianValue<int8_t>(&g[i]);
      CHECK_EQ(actual, expected);
    }
  }
}

WASM_SIMD_TEST(I8x16ReplaceLane) {
  WasmRunner<int32_t> r(execution_tier, lower_simd);
  // Set up a global to hold input/output vector.
  int8_t* g = r.builder().AddGlobal<int8_t>(kWasmS128);
  // Build function to replace each lane with its index.
  byte temp1 = r.AllocateLocal(kWasmS128);
  BUILD(r, WASM_SET_LOCAL(temp1, WASM_SIMD_I8x16_SPLAT(WASM_I32V(-1))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I8x16_REPLACE_LANE(
                                  0, WASM_GET_LOCAL(temp1), WASM_I32V(0))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I8x16_REPLACE_LANE(
                                  1, WASM_GET_LOCAL(temp1), WASM_I32V(1))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I8x16_REPLACE_LANE(
                                  2, WASM_GET_LOCAL(temp1), WASM_I32V(2))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I8x16_REPLACE_LANE(
                                  3, WASM_GET_LOCAL(temp1), WASM_I32V(3))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I8x16_REPLACE_LANE(
                                  4, WASM_GET_LOCAL(temp1), WASM_I32V(4))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I8x16_REPLACE_LANE(
                                  5, WASM_GET_LOCAL(temp1), WASM_I32V(5))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I8x16_REPLACE_LANE(
                                  6, WASM_GET_LOCAL(temp1), WASM_I32V(6))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I8x16_REPLACE_LANE(
                                  7, WASM_GET_LOCAL(temp1), WASM_I32V(7))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I8x16_REPLACE_LANE(
                                  8, WASM_GET_LOCAL(temp1), WASM_I32V(8))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I8x16_REPLACE_LANE(
                                  9, WASM_GET_LOCAL(temp1), WASM_I32V(9))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I8x16_REPLACE_LANE(
                                  10, WASM_GET_LOCAL(temp1), WASM_I32V(10))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I8x16_REPLACE_LANE(
                                  11, WASM_GET_LOCAL(temp1), WASM_I32V(11))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I8x16_REPLACE_LANE(
                                  12, WASM_GET_LOCAL(temp1), WASM_I32V(12))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I8x16_REPLACE_LANE(
                                  13, WASM_GET_LOCAL(temp1), WASM_I32V(13))),
        WASM_SET_LOCAL(temp1, WASM_SIMD_I8x16_REPLACE_LANE(
                                  14, WASM_GET_LOCAL(temp1), WASM_I32V(14))),
        WASM_SET_GLOBAL(0, WASM_SIMD_I8x16_REPLACE_LANE(
                               15, WASM_GET_LOCAL(temp1), WASM_I32V(15))),
        WASM_ONE);

  r.Call();
  for (int8_t i = 0; i < 16; i++) {
    CHECK_EQ(i, ReadLittleEndianValue<int8_t>(&g[i]));
  }
}

// Use doubles to ensure exact conversion.
int32_t ConvertToInt(double val, bool unsigned_integer) {
  if (std::isnan(val)) return 0;
  if (unsigned_integer) {
    if (val < 0) return 0;
    if (val > kMaxUInt32) return kMaxUInt32;
    return static_cast<uint32_t>(val);
  } else {
    if (val < kMinInt) return kMinInt;
    if (val > kMaxInt) return kMaxInt;
    return static_cast<int>(val);
  }
}

// Tests both signed and unsigned conversion.
WASM_SIMD_TEST(I32x4ConvertF32x4) {
  WasmRunner<int32_t, float> r(execution_tier, lower_simd);
  // Create two output vectors to hold signed and unsigned results.
  int32_t* g0 = r.builder().AddGlobal<int32_t>(kWasmS128);
  int32_t* g1 = r.builder().AddGlobal<int32_t>(kWasmS128);
  // Build fn to splat test value, perform conversions, and write the results.
  byte value = 0;
  byte temp1 = r.AllocateLocal(kWasmS128);
  BUILD(r, WASM_SET_LOCAL(temp1, WASM_SIMD_F32x4_SPLAT(WASM_GET_LOCAL(value))),
        WASM_SET_GLOBAL(
            0, WASM_SIMD_UNOP(kExprI32x4SConvertF32x4, WASM_GET_LOCAL(temp1))),
        WASM_SET_GLOBAL(
            1, WASM_SIMD_UNOP(kExprI32x4UConvertF32x4, WASM_GET_LOCAL(temp1))),
        WASM_ONE);

  FOR_FLOAT32_INPUTS(x) {
    if (!PlatformCanRepresent(x)) continue;
    r.Call(x);
    int32_t expected_signed = ConvertToInt(x, false);
    int32_t expected_unsigned = ConvertToInt(x, true);
    for (int i = 0; i < 4; i++) {
      CHECK_EQ(expected_signed, ReadLittleEndianValue<int32_t>(&g0[i]));
      CHECK_EQ(expected_unsigned, ReadLittleEndianValue<int32_t>(&g1[i]));
    }
  }
}

// Tests both signed and unsigned conversion from I16x8 (unpacking).
WASM_SIMD_TEST(I32x4ConvertI16x8) {
  WasmRunner<int32_t, int32_t> r(execution_tier, lower_simd);
  // Create four output vectors to hold signed and unsigned results.
  int32_t* g0 = r.builder().AddGlobal<int32_t>(kWasmS128);
  int32_t* g1 = r.builder().AddGlobal<int32_t>(kWasmS128);
  int32_t* g2 = r.builder().AddGlobal<int32_t>(kWasmS128);
  int32_t* g3 = r.builder().AddGlobal<int32_t>(kWasmS128);
  // Build fn to splat test value, perform conversions, and write the results.
  byte value = 0;
  byte temp1 = r.AllocateLocal(kWasmS128);
  BUILD(r, WASM_SET_LOCAL(temp1, WASM_SIMD_I16x8_SPLAT(WASM_GET_LOCAL(value))),
        WASM_SET_GLOBAL(0, WASM_SIMD_UNOP(kExprI32x4SConvertI16x8High,
                                          WASM_GET_LOCAL(temp1))),
        WASM_SET_GLOBAL(1, WASM_SIMD_UNOP(kExprI32x4SConvertI16x8Low,
                                          WASM_GET_LOCAL(temp1))),
        WASM_SET_GLOBAL(2, WASM_SIMD_UNOP(kExprI32x4UConvertI16x8High,
                                          WASM_GET_LOCAL(temp1))),
        WASM_SET_GLOBAL(3, WASM_SIMD_UNOP(kExprI32x4UConvertI16x8Low,
                                          WASM_GET_LOCAL(temp1))),
        WASM_ONE);

  FOR_INT16_INPUTS(x) {
    r.Call(x);
    int32_t expected_signed = static_cast<int32_t>(Widen<int16_t>(x));
    int32_t expected_unsigned = static_cast<int32_t>(UnsignedWiden<int16_t>(x));
    for (int i = 0; i < 4; i++) {
      CHECK_EQ(expected_signed, ReadLittleEndianValue<int32_t>(&g0[i]));
      CHECK_EQ(expected_signed, ReadLittleEndianValue<int32_t>(&g1[i]));
      CHECK_EQ(expected_unsigned, ReadLittleEndianValue<int32_t>(&g2[i]));
      CHECK_EQ(expected_unsigned, ReadLittleEndianValue<int32_t>(&g3[i]));
    }
  }
}

void RunI32x4UnOpTest(ExecutionTier execution_tier, LowerSimd lower_simd,
                      WasmOpcode opcode, Int32UnOp expected_op) {
  WasmRunner<int32_t, int32_t> r(execution_tier, lower_simd);
  // 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_SET_LOCAL(temp1, WASM_SIMD_I32x4_SPLAT(WASM_GET_LOCAL(value))),
        WASM_SET_GLOBAL(0, WASM_SIMD_UNOP(opcode, WASM_GET_LOCAL(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, ReadLittleEndianValue<int32_t>(&g[i]));
    }
  }
}

WASM_SIMD_TEST(I32x4Neg) {
  RunI32x4UnOpTest(execution_tier, lower_simd, kExprI32x4Neg,
                   base::NegateWithWraparound);
}

WASM_SIMD_TEST(S128Not) {
  RunI32x4UnOpTest(execution_tier, lower_simd, kExprS128Not, Not);
}

void RunI32x4BinOpTest(ExecutionTier execution_tier, LowerSimd lower_simd,
                       WasmOpcode opcode, Int32BinOp expected_op) {
  WasmRunner<int32_t, int32_t, int32_t> r(execution_tier, lower_simd);
  // 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_SET_LOCAL(temp1, WASM_SIMD_I32x4_SPLAT(WASM_GET_LOCAL(value1))),
        WASM_SET_LOCAL(temp2, WASM_SIMD_I32x4_SPLAT(WASM_GET_LOCAL(value2))),
        WASM_SET_GLOBAL(0, WASM_SIMD_BINOP(opcode, WASM_GET_LOCAL(temp1),
                                           WASM_GET_LOCAL(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, ReadLittleEndianValue<int32_t>(&g[i]));
      }
    }
  }
}

WASM_SIMD_TEST(I32x4Add) {
  RunI32x4BinOpTest(execution_tier, lower_simd, kExprI32x4Add,
                    base::AddWithWraparound);
}

WASM_SIMD_TEST(I32x4Sub) {
  RunI32x4BinOpTest(execution_tier, lower_simd, kExprI32x4Sub,
                    base::SubWithWraparound);
}

WASM_SIMD_TEST(I32x4Mul) {
  RunI32x4BinOpTest(execution_tier, lower_simd, kExprI32x4Mul,
                    base::MulWithWraparound);
}

WASM_SIMD_TEST(I32x4MinS) {
  RunI32x4BinOpTest(execution_tier, lower_simd, kExprI32x4MinS, Minimum);
}

WASM_SIMD_TEST(I32x4MaxS) {
  RunI32x4BinOpTest(execution_tier, lower_simd, kExprI32x4MaxS, Maximum);
}

WASM_SIMD_TEST(I32x4MinU) {
  RunI32x4BinOpTest(execution_tier, lower_simd, kExprI32x4MinU,
                    UnsignedMinimum);
}
WASM_SIMD_TEST(I32x4MaxU) {
  RunI32x4BinOpTest(execution_tier, lower_simd, kExprI32x4MaxU,

                    UnsignedMaximum);
}

WASM_SIMD_TEST(S128And) {
  RunI32x4BinOpTest(execution_tier, lower_simd, kExprS128And, And);
}

WASM_SIMD_TEST(S128Or) {
  RunI32x4BinOpTest(execution_tier, lower_simd, kExprS128Or, Or);
}

WASM_SIMD_TEST(S128Xor) {
  RunI32x4BinOpTest(execution_tier, lower_simd, kExprS128Xor, Xor);
}

WASM_SIMD_TEST(I32x4Eq) {
  RunI32x4BinOpTest(execution_tier, lower_simd, kExprI32x4Eq, Equal);
}

WASM_SIMD_TEST(I32x4Ne) {
  RunI32x4BinOpTest(execution_tier, lower_simd, kExprI32x4Ne, NotEqual);
}

WASM_SIMD_TEST(I32x4LtS) {
  RunI32x4BinOpTest(execution_tier, lower_simd, kExprI32x4LtS, Less);
}

WASM_SIMD_TEST(I32x4LeS) {
  RunI32x4BinOpTest(execution_tier, lower_simd, kExprI32x4LeS, LessEqual);
}

WASM_SIMD_TEST(I32x4GtS) {
  RunI32x4BinOpTest(execution_tier, lower_simd, kExprI32x4GtS, Greater);
}

WASM_SIMD_TEST(I32x4GeS) {
  RunI32x4BinOpTest(execution_tier, lower_simd, kExprI32x4GeS, GreaterEqual);
}

WASM_SIMD_TEST(I32x4LtU) {
  RunI32x4BinOpTest(execution_tier, lower_simd, kExprI32x4LtU, UnsignedLess);
}

WASM_SIMD_TEST(I32x4LeU) {
  RunI32x4BinOpTest(execution_tier, lower_simd, kExprI32x4LeU,
                    UnsignedLessEqual);
}

WASM_SIMD_TEST(I32x4GtU) {
  RunI32x4BinOpTest(execution_tier, lower_simd, kExprI32x4GtU, UnsignedGreater);
}

WASM_SIMD_TEST(I32x4GeU) {
  RunI32x4BinOpTest(execution_tier, lower_simd, kExprI32x4GeU,
                    UnsignedGreaterEqual);
}

void RunI32x4ShiftOpTest(ExecutionTier execution_tier, LowerSimd lower_simd,
                         WasmOpcode opcode, Int32ShiftOp expected_op) {
  for (int shift = 1; shift < 32; shift++) {
    WasmRunner<int32_t, int32_t> r(execution_tier, lower_simd);
    int32_t* g = r.builder().AddGlobal<int32_t>(kWasmS128);
    byte value = 0;
    byte simd1 = r.AllocateLocal(kWasmS128);
    BUILD(r,
          WASM_SET_LOCAL(simd1, WASM_SIMD_I32x4_SPLAT(WASM_GET_LOCAL(value))),
          WASM_SET_GLOBAL(
              0, WASM_SIMD_SHIFT_OP(opcode, shift, WASM_GET_LOCAL(simd1))),
          WASM_ONE);

    FOR_INT32_INPUTS(x) {
      r.Call(x);
      float expected = expected_op(x, shift);
      for (int i = 0; i < 4; i++) {
        CHECK_EQ(expected, ReadLittleEndianValue<int32_t>(&g[i]));
      }
    }
  }
}

WASM_SIMD_TEST(I32x4Shl) {
  RunI32x4ShiftOpTest(execution_tier, lower_simd, kExprI32x4Shl,
                      LogicalShiftLeft);
}

WASM_SIMD_TEST(I32x4ShrS) {
  RunI32x4ShiftOpTest(execution_tier, lower_simd, kExprI32x4ShrS,
                      ArithmeticShiftRight);
}

WASM_SIMD_TEST(I32x4ShrU) {
  RunI32x4ShiftOpTest(execution_tier, lower_simd, kExprI32x4ShrU,
                      LogicalShiftRight);
}

// Tests both signed and unsigned conversion from I8x16 (unpacking).
WASM_SIMD_TEST(I16x8ConvertI8x16) {
  WasmRunner<int32_t, int32_t> r(execution_tier, lower_simd);
  // Create four output vectors to hold signed and unsigned results.
  int16_t* g0 = r.builder().AddGlobal<int16_t>(kWasmS128);
  int16_t* g1 = r.builder().AddGlobal<int16_t>(kWasmS128);
  int16_t* g2 = r.builder().AddGlobal<int16_t>(kWasmS128);
  int16_t* g3 = r.builder().AddGlobal<int16_t>(kWasmS128);
  // Build fn to splat test value, perform conversions, and write the results.
  byte value = 0;
  byte temp1 = r.AllocateLocal(kWasmS128);
  BUILD(r, WASM_SET_LOCAL(temp1, WASM_SIMD_I8x16_SPLAT(WASM_GET_LOCAL(value))),
        WASM_SET_GLOBAL(0, WASM_SIMD_UNOP(kExprI16x8SConvertI8x16High,
                                          WASM_GET_LOCAL(temp1))),
        WASM_SET_GLOBAL(1, WASM_SIMD_UNOP(kExprI16x8SConvertI8x16Low,
                                          WASM_GET_LOCAL(temp1))),
        WASM_SET_GLOBAL(2, WASM_SIMD_UNOP(kExprI16x8UConvertI8x16High,
                                          WASM_GET_LOCAL(temp1))),
        WASM_SET_GLOBAL(3, WASM_SIMD_UNOP(kExprI16x8UConvertI8x16Low,
                                          WASM_GET_LOCAL(temp1))),
        WASM_ONE);

  FOR_INT8_INPUTS(x) {
    r.Call(x);
    int16_t expected_signed = static_cast<int16_t>(Widen<int8_t>(x));
    int16_t expected_unsigned = static_cast<int16_t>(UnsignedWiden<int8_t>(x));
    for (int i = 0; i < 8; i++) {
      CHECK_EQ(expected_signed, ReadLittleEndianValue<int16_t>(&g0[i]));
      CHECK_EQ(expected_signed, ReadLittleEndianValue<int16_t>(&g1[i]));
      CHECK_EQ(expected_unsigned, ReadLittleEndianValue<int16_t>(&g2[i]));
      CHECK_EQ(expected_unsigned, ReadLittleEndianValue<int16_t>(&g3[i]));
    }
  }
}

// Tests both signed and unsigned conversion from I32x4 (packing).
WASM_SIMD_TEST(I16x8ConvertI32x4) {
  WasmRunner<int32_t, int32_t> r(execution_tier, lower_simd);
  // Create output vectors to hold signed and unsigned results.
  int16_t* g0 = r.builder().AddGlobal<int16_t>(kWasmS128);
  int16_t* g1 = r.builder().AddGlobal<int16_t>(kWasmS128);
  // Build fn to splat test value, perform conversions, and write the results.
  byte value = 0;
  byte temp1 = r.AllocateLocal(kWasmS128);
  BUILD(r, WASM_SET_LOCAL(temp1, WASM_SIMD_I32x4_SPLAT(WASM_GET_LOCAL(value))),
        WASM_SET_GLOBAL(
            0, WASM_SIMD_BINOP(kExprI16x8SConvertI32x4, WASM_GET_LOCAL(temp1),
                               WASM_GET_LOCAL(temp1))),
        WASM_SET_GLOBAL(
            1, WASM_SIMD_BINOP(kExprI16x8UConvertI32x4, WASM_GET_LOCAL(temp1),
                               WASM_GET_LOCAL(temp1))),
        WASM_ONE);

  FOR_INT32_INPUTS(x) {
    r.Call(x);
    int16_t expected_signed = Narrow<int16_t>(x);
    int16_t expected_unsigned = UnsignedNarrow<int16_t>(x);
    for (int i = 0; i < 8; i++) {
      CHECK_EQ(expected_signed, ReadLittleEndianValue<int16_t>(&g0[i]));
      CHECK_EQ(expected_unsigned, ReadLittleEndianValue<int16_t>(&g1[i]));
    }
  }
}

void RunI16x8UnOpTest(ExecutionTier execution_tier, LowerSimd lower_simd,
                      WasmOpcode opcode, Int16UnOp expected_op) {
  WasmRunner<int32_t, int32_t> r(execution_tier, lower_simd);
  // 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_SET_LOCAL(temp1, WASM_SIMD_I16x8_SPLAT(WASM_GET_LOCAL(value))),
        WASM_SET_GLOBAL(0, WASM_SIMD_UNOP(opcode, WASM_GET_LOCAL(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, ReadLittleEndianValue<int16_t>(&g[i]));
    }
  }
}

WASM_SIMD_TEST(I16x8Neg) {
  RunI16x8UnOpTest(execution_tier, lower_simd, kExprI16x8Neg,
                   base::NegateWithWraparound);
}

void RunI16x8BinOpTest(ExecutionTier execution_tier, LowerSimd lower_simd,
                       WasmOpcode opcode, Int16BinOp expected_op) {
  WasmRunner<int32_t, int32_t, int32_t> r(execution_tier, lower_simd);
  // Global to hold output.
  int16_t* g = r.builder().AddGlobal<int16_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_SET_LOCAL(temp1, WASM_SIMD_I16x8_SPLAT(WASM_GET_LOCAL(value1))),
        WASM_SET_LOCAL(temp2, WASM_SIMD_I16x8_SPLAT(WASM_GET_LOCAL(value2))),
        WASM_SET_GLOBAL(0, WASM_SIMD_BINOP(opcode, WASM_GET_LOCAL(temp1),
                                           WASM_GET_LOCAL(temp2))),
        WASM_ONE);

  FOR_INT16_INPUTS(x) {
    FOR_INT16_INPUTS(y) {
      r.Call(x, y);
      int16_t expected = expected_op(x, y);
      for (int i = 0; i < 8; i++) {
        CHECK_EQ(expected, ReadLittleEndianValue<int16_t>(&g[i]));
      }
    }
  }
}

WASM_SIMD_TEST(I16x8Add) {
  RunI16x8BinOpTest(execution_tier, lower_simd, kExprI16x8Add,
                    base::AddWithWraparound);
}

WASM_SIMD_TEST(I16x8AddSaturateS) {
  RunI16x8BinOpTest(execution_tier, lower_simd, kExprI16x8AddSaturateS,
                    AddSaturate);
}

WASM_SIMD_TEST(I16x8Sub) {
  RunI16x8BinOpTest(execution_tier, lower_simd, kExprI16x8Sub,
                    base::SubWithWraparound);
}

WASM_SIMD_TEST(I16x8SubSaturateS) {
  RunI16x8BinOpTest(execution_tier, lower_simd, kExprI16x8SubSaturateS,
                    SubSaturate);
}

WASM_SIMD_TEST(I16x8Mul) {
  RunI16x8BinOpTest(execution_tier, lower_simd, kExprI16x8Mul,
                    base::MulWithWraparound);
}

WASM_SIMD_TEST(I16x8MinS) {
  RunI16x8BinOpTest(execution_tier, lower_simd, kExprI16x8MinS, Minimum);
}

WASM_SIMD_TEST(I16x8MaxS) {
  RunI16x8BinOpTest(execution_tier, lower_simd, kExprI16x8MaxS, Maximum);
}

WASM_SIMD_TEST(I16x8AddSaturateU) {
  RunI16x8BinOpTest(execution_tier, lower_simd, kExprI16x8AddSaturateU,
                    UnsignedAddSaturate);
}

WASM_SIMD_TEST(I16x8SubSaturateU) {
  RunI16x8BinOpTest(execution_tier, lower_simd, kExprI16x8SubSaturateU,
                    UnsignedSubSaturate);
}

WASM_SIMD_TEST(I16x8MinU) {
  RunI16x8BinOpTest(execution_tier, lower_simd, kExprI16x8MinU,
                    UnsignedMinimum);
}

WASM_SIMD_TEST(I16x8MaxU) {
  RunI16x8BinOpTest(execution_tier, lower_simd, kExprI16x8MaxU,
                    UnsignedMaximum);
}

WASM_SIMD_TEST(I16x8Eq) {
  RunI16x8BinOpTest(execution_tier, lower_simd, kExprI16x8Eq, Equal);
}

WASM_SIMD_TEST(I16x8Ne) {
  RunI16x8BinOpTest(execution_tier, lower_simd, kExprI16x8Ne, NotEqual);
}

WASM_SIMD_TEST(I16x8LtS) {
  RunI16x8BinOpTest(execution_tier, lower_simd, kExprI16x8LtS, Less);
}

WASM_SIMD_TEST(I16x8LeS) {
  RunI16x8BinOpTest(execution_tier, lower_simd, kExprI16x8LeS, LessEqual);
}

WASM_SIMD_TEST(I16x8GtS) {
  RunI16x8BinOpTest(execution_tier, lower_simd, kExprI16x8GtS, Greater);
}

WASM_SIMD_TEST(I16x8GeS) {
  RunI16x8BinOpTest(execution_tier, lower_simd, kExprI16x8GeS, GreaterEqual);
}

WASM_SIMD_TEST(I16x8GtU) {
  RunI16x8BinOpTest(execution_tier, lower_simd, kExprI16x8GtU, UnsignedGreater);
}

WASM_SIMD_TEST(I16x8GeU) {
  RunI16x8BinOpTest(execution_tier, lower_simd, kExprI16x8GeU,
                    UnsignedGreaterEqual);
}

WASM_SIMD_TEST(I16x8LtU) {
  RunI16x8BinOpTest(execution_tier, lower_simd, kExprI16x8LtU, UnsignedLess);
}

WASM_SIMD_TEST(I16x8LeU) {
  RunI16x8BinOpTest(execution_tier, lower_simd, kExprI16x8LeU,
                    UnsignedLessEqual);
}

void RunI16x8ShiftOpTest(ExecutionTier execution_tier, LowerSimd lower_simd,
                         WasmOpcode opcode, Int16ShiftOp expected_op) {
  for (int shift = 1; shift < 16; shift++) {
    WasmRunner<int32_t, int32_t> r(execution_tier, lower_simd);
    int16_t* g = r.builder().AddGlobal<int16_t>(kWasmS128);
    byte value = 0;
    byte simd1 = r.AllocateLocal(kWasmS128);
    BUILD(r,
          WASM_SET_LOCAL(simd1, WASM_SIMD_I16x8_SPLAT(WASM_GET_LOCAL(value))),
          WASM_SET_GLOBAL(
              0, WASM_SIMD_SHIFT_OP(opcode, shift, WASM_GET_LOCAL(simd1))),
          WASM_ONE);

    FOR_INT16_INPUTS(x) {
      r.Call(x);
      float expected = expected_op(x, shift);
      for (int i = 0; i < 8; i++) {
        CHECK_EQ(expected, ReadLittleEndianValue<int16_t>(&g[i]));
      }
    }
  }
}

WASM_SIMD_TEST(I16x8Shl) {
  RunI16x8ShiftOpTest(execution_tier, lower_simd, kExprI16x8Shl,
                      LogicalShiftLeft);
}

WASM_SIMD_TEST(I16x8ShrS) {
  RunI16x8ShiftOpTest(execution_tier, lower_simd, kExprI16x8ShrS,
                      ArithmeticShiftRight);
}

WASM_SIMD_TEST(I16x8ShrU) {
  RunI16x8ShiftOpTest(execution_tier, lower_simd, kExprI16x8ShrU,
                      LogicalShiftRight);
}

void RunI8x16UnOpTest(ExecutionTier execution_tier, LowerSimd lower_simd,
                      WasmOpcode opcode, Int8UnOp expected_op) {
  WasmRunner<int32_t, int32_t> r(execution_tier, lower_simd);
  // 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_SET_LOCAL(temp1, WASM_SIMD_I8x16_SPLAT(WASM_GET_LOCAL(value))),
        WASM_SET_GLOBAL(0, WASM_SIMD_UNOP(opcode, WASM_GET_LOCAL(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, ReadLittleEndianValue<int8_t>(&g[i]));
    }
  }
}

WASM_SIMD_TEST(I8x16Neg) {
  RunI8x16UnOpTest(execution_tier, lower_simd, kExprI8x16Neg,
                   base::NegateWithWraparound);
}

// Tests both signed and unsigned conversion from I16x8 (packing).
WASM_SIMD_TEST(I8x16ConvertI16x8) {
  WasmRunner<int32_t, int32_t> r(execution_tier, lower_simd);
  // Create output vectors to hold signed and unsigned results.
  int8_t* g0 = r.builder().AddGlobal<int8_t>(kWasmS128);
  int8_t* g1 = r.builder().AddGlobal<int8_t>(kWasmS128);
  // Build fn to splat test value, perform conversions, and write the results.
  byte value = 0;
  byte temp1 = r.AllocateLocal(kWasmS128);
  BUILD(r, WASM_SET_LOCAL(temp1, WASM_SIMD_I16x8_SPLAT(WASM_GET_LOCAL(value))),
        WASM_SET_GLOBAL(
            0, WASM_SIMD_BINOP(kExprI8x16SConvertI16x8, WASM_GET_LOCAL(temp1),
                               WASM_GET_LOCAL(temp1))),
        WASM_SET_GLOBAL(
            1, WASM_SIMD_BINOP(kExprI8x16UConvertI16x8, WASM_GET_LOCAL(temp1),
                               WASM_GET_LOCAL(temp1))),
        WASM_ONE);

  FOR_INT16_INPUTS(x) {
    r.Call(x);
    int8_t expected_signed = Narrow<int8_t>(x);
    int8_t expected_unsigned = UnsignedNarrow<int8_t>(x);
    for (int i = 0; i < 16; i++) {
      CHECK_EQ(expected_signed, ReadLittleEndianValue<int8_t>(&g0[i]));
      CHECK_EQ(expected_unsigned, ReadLittleEndianValue<int8_t>(&g1[i]));
    }
  }
}

void RunI8x16BinOpTest(ExecutionTier execution_tier, LowerSimd lower_simd,
                       WasmOpcode opcode, Int8BinOp expected_op) {
  WasmRunner<int32_t, int32_t, int32_t> r(execution_tier, lower_simd);
  // Global to hold output.
  int8_t* g = r.builder().AddGlobal<int8_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_SET_LOCAL(temp1, WASM_SIMD_I8x16_SPLAT(WASM_GET_LOCAL(value1))),
        WASM_SET_LOCAL(temp2, WASM_SIMD_I8x16_SPLAT(WASM_GET_LOCAL(value2))),
        WASM_SET_GLOBAL(0, WASM_SIMD_BINOP(opcode, WASM_GET_LOCAL(temp1),
                                           WASM_GET_LOCAL(temp2))),
        WASM_ONE);

  FOR_INT8_INPUTS(x) {
    FOR_INT8_INPUTS(y) {
      r.Call(x, y);
      int8_t expected = expected_op(x, y);
      for (int i = 0; i < 16; i++) {
        CHECK_EQ(expected, ReadLittleEndianValue<int8_t>(&g[i]));
      }
    }
  }
}

WASM_SIMD_TEST(I8x16Add) {
  RunI8x16BinOpTest(execution_tier, lower_simd, kExprI8x16Add,
                    base::AddWithWraparound);
}

WASM_SIMD_TEST(I8x16AddSaturateS) {
  RunI8x16BinOpTest(execution_tier, lower_simd, kExprI8x16AddSaturateS,
                    AddSaturate);
}

WASM_SIMD_TEST(I8x16Sub) {
  RunI8x16BinOpTest(execution_tier, lower_simd, kExprI8x16Sub,
                    base::SubWithWraparound);
}

WASM_SIMD_TEST(I8x16SubSaturateS) {
  RunI8x16BinOpTest(execution_tier, lower_simd, kExprI8x16SubSaturateS,
                    SubSaturate);
}

WASM_SIMD_TEST(I8x16MinS) {
  RunI8x16BinOpTest(execution_tier, lower_simd, kExprI8x16MinS, Minimum);
}

WASM_SIMD_TEST(I8x16MaxS) {
  RunI8x16BinOpTest(execution_tier, lower_simd, kExprI8x16MaxS, Maximum);
}

WASM_SIMD_TEST(I8x16AddSaturateU) {
  RunI8x16BinOpTest(execution_tier, lower_simd, kExprI8x16AddSaturateU,
                    UnsignedAddSaturate);
}

WASM_SIMD_TEST(I8x16SubSaturateU) {
  RunI8x16BinOpTest(execution_tier, lower_simd, kExprI8x16SubSaturateU,
                    UnsignedSubSaturate);
}

WASM_SIMD_TEST(I8x16MinU) {
  RunI8x16BinOpTest(execution_tier, lower_simd, kExprI8x16MinU,
                    UnsignedMinimum);
}

WASM_SIMD_TEST(I8x16MaxU) {
  RunI8x16BinOpTest(execution_tier, lower_simd, kExprI8x16MaxU,
                    UnsignedMaximum);
}

WASM_SIMD_TEST(I8x16Eq) {
  RunI8x16BinOpTest(execution_tier, lower_simd, kExprI8x16Eq, Equal);
}

WASM_SIMD_TEST(I8x16Ne) {
  RunI8x16BinOpTest(execution_tier, lower_simd, kExprI8x16Ne, NotEqual);
}

WASM_SIMD_TEST(I8x16GtS) {
  RunI8x16BinOpTest(execution_tier, lower_simd, kExprI8x16GtS, Greater);
}

WASM_SIMD_TEST(I8x16GeS) {
  RunI8x16BinOpTest(execution_tier, lower_simd, kExprI8x16GeS, GreaterEqual);
}

WASM_SIMD_TEST(I8x16LtS) {
  RunI8x16BinOpTest(execution_tier, lower_simd, kExprI8x16LtS, Less);
}

WASM_SIMD_TEST(I8x16LeS) {
  RunI8x16BinOpTest(execution_tier, lower_simd, kExprI8x16LeS, LessEqual);
}

WASM_SIMD_TEST(I8x16GtU) {
  RunI8x16BinOpTest(execution_tier, lower_simd, kExprI8x16GtU, UnsignedGreater);
}

WASM_SIMD_TEST(I8x16GeU) {
  RunI8x16BinOpTest(execution_tier, lower_simd, kExprI8x16GeU,
                    UnsignedGreaterEqual);
}

WASM_SIMD_TEST(I8x16LtU) {
  RunI8x16BinOpTest(execution_tier, lower_simd, kExprI8x16LtU, UnsignedLess);
}

WASM_SIMD_TEST(I8x16LeU) {
  RunI8x16BinOpTest(execution_tier, lower_simd, kExprI8x16LeU,
                    UnsignedLessEqual);
}

WASM_SIMD_TEST(I8x16Mul) {
  RunI8x16BinOpTest(execution_tier, lower_simd, kExprI8x16Mul,
                    base::MulWithWraparound);
}

void RunI8x16ShiftOpTest(ExecutionTier execution_tier, LowerSimd lower_simd,
                         WasmOpcode opcode, Int8ShiftOp expected_op) {
  for (int shift = 1; shift < 8; shift++) {
    WasmRunner<int32_t, int32_t> r(execution_tier, lower_simd);
    int8_t* g = r.builder().AddGlobal<int8_t>(kWasmS128);
    byte value = 0;
    byte simd1 = r.AllocateLocal(kWasmS128);
    BUILD(r,
          WASM_SET_LOCAL(simd1, WASM_SIMD_I8x16_SPLAT(WASM_GET_LOCAL(value))),
          WASM_SET_GLOBAL(
              0, WASM_SIMD_SHIFT_OP(opcode, shift, WASM_GET_LOCAL(simd1))),
          WASM_ONE);

    FOR_INT8_INPUTS(x) {
      r.Call(x);
      float expected = expected_op(x, shift);
      for (int i = 0; i < 16; i++) {
        CHECK_EQ(expected, ReadLittleEndianValue<int8_t>(&g[i]));
      }
    }
  }
}

WASM_SIMD_TEST(I8x16Shl) {
  RunI8x16ShiftOpTest(execution_tier, lower_simd, kExprI8x16Shl,
                      LogicalShiftLeft);
}

WASM_SIMD_TEST(I8x16ShrS) {
  RunI8x16ShiftOpTest(execution_tier, lower_simd, kExprI8x16ShrS,
                      ArithmeticShiftRight);
}

WASM_SIMD_TEST(I8x16ShrU) {
  RunI8x16ShiftOpTest(execution_tier, lower_simd, kExprI8x16ShrU,
                      LogicalShiftRight);
}

// Test Select by making a mask where the 0th and 3rd lanes are true and the
// rest false, and comparing for non-equality with zero to convert to a boolean
// vector.
#define WASM_SIMD_SELECT_TEST(format)                                        \
  WASM_SIMD_TEST(S##format##Select) {                                        \
    WasmRunner<int32_t, int32_t, int32_t> r(execution_tier, lower_simd);     \
    byte val1 = 0;                                                           \
    byte val2 = 1;                                                           \
    byte src1 = r.AllocateLocal(kWasmS128);                                  \
    byte src2 = r.AllocateLocal(kWasmS128);                                  \
    byte zero = r.AllocateLocal(kWasmS128);                                  \
    byte mask = r.AllocateLocal(kWasmS128);                                  \
    BUILD(r,                                                                 \
          WASM_SET_LOCAL(src1,                                               \
                         WASM_SIMD_I##format##_SPLAT(WASM_GET_LOCAL(val1))), \
          WASM_SET_LOCAL(src2,                                               \
                         WASM_SIMD_I##format##_SPLAT(WASM_GET_LOCAL(val2))), \
          WASM_SET_LOCAL(zero, WASM_SIMD_I##format##_SPLAT(WASM_ZERO)),      \
          WASM_SET_LOCAL(mask, WASM_SIMD_I##format##_REPLACE_LANE(           \
                                   1, WASM_GET_LOCAL(zero), WASM_I32V(-1))), \
          WASM_SET_LOCAL(mask, WASM_SIMD_I##format##_REPLACE_LANE(           \
                                   2, WASM_GET_LOCAL(mask), WASM_I32V(-1))), \
          WASM_SET_LOCAL(                                                    \
              mask,                                                          \
              WASM_SIMD_SELECT(                                              \
                  format, WASM_GET_LOCAL(src1), WASM_GET_LOCAL(src2),        \
                  WASM_SIMD_BINOP(kExprI##format##Ne, WASM_GET_LOCAL(mask),  \
                                  WASM_GET_LOCAL(zero)))),                   \
          WASM_SIMD_CHECK_LANE(I##format, mask, I32, val2, 0),               \
          WASM_SIMD_CHECK_LANE(I##format, mask, I32, val1, 1),               \
          WASM_SIMD_CHECK_LANE(I##format, mask, I32, val1, 2),               \
          WASM_SIMD_CHECK_LANE(I##format, mask, I32, val2, 3), WASM_ONE);    \
                                                                             \
    CHECK_EQ(1, r.Call(0x12, 0x34));                                         \
  }

WASM_SIMD_SELECT_TEST(32x4)
WASM_SIMD_SELECT_TEST(16x8)
WASM_SIMD_SELECT_TEST(8x16)

// Test Select by making a mask where the 0th and 3rd lanes are non-zero and the
// rest 0. The mask is not the result of a comparison op.
#define WASM_SIMD_NON_CANONICAL_SELECT_TEST(format)                           \
  WASM_SIMD_TEST_NO_LOWERING(S##format##NonCanonicalSelect) {                 \
    WasmRunner<int32_t, int32_t, int32_t, int32_t> r(execution_tier,          \
                                                     lower_simd);             \
    byte val1 = 0;                                                            \
    byte val2 = 1;                                                            \
    byte combined = 2;                                                        \
    byte src1 = r.AllocateLocal(kWasmS128);                                   \
    byte src2 = r.AllocateLocal(kWasmS128);                                   \
    byte zero = r.AllocateLocal(kWasmS128);                                   \
    byte mask = r.AllocateLocal(kWasmS128);                                   \
    BUILD(r,                                                                  \
          WASM_SET_LOCAL(src1,                                                \
                         WASM_SIMD_I##format##_SPLAT(WASM_GET_LOCAL(val1))),  \
          WASM_SET_LOCAL(src2,                                                \
                         WASM_SIMD_I##format##_SPLAT(WASM_GET_LOCAL(val2))),  \
          WASM_SET_LOCAL(zero, WASM_SIMD_I##format##_SPLAT(WASM_ZERO)),       \
          WASM_SET_LOCAL(mask, WASM_SIMD_I##format##_REPLACE_LANE(            \
                                   1, WASM_GET_LOCAL(zero), WASM_I32V(0xF))), \
          WASM_SET_LOCAL(mask, WASM_SIMD_I##format##_REPLACE_LANE(            \
                                   2, WASM_GET_LOCAL(mask), WASM_I32V(0xF))), \
          WASM_SET_LOCAL(mask, WASM_SIMD_SELECT(format, WASM_GET_LOCAL(src1), \
                                                WASM_GET_LOCAL(src2),         \
                                                WASM_GET_LOCAL(mask))),       \
          WASM_SIMD_CHECK_LANE(I##format, mask, I32, val2, 0),                \
          WASM_SIMD_CHECK_LANE(I##format, mask, I32, combined, 1),            \
          WASM_SIMD_CHECK_LANE(I##format, mask, I32, combined, 2),            \
          WASM_SIMD_CHECK_LANE(I##format, mask, I32, val2, 3), WASM_ONE);     \
                                                                              \
    CHECK_EQ(1, r.Call(0x12, 0x34, 0x32));                                    \
  }

WASM_SIMD_NON_CANONICAL_SELECT_TEST(32x4)
WASM_SIMD_NON_CANONICAL_SELECT_TEST(16x8)
WASM_SIMD_NON_CANONICAL_SELECT_TEST(8x16)

// Test binary ops with two lane test patterns, all lanes distinct.
template <typename T>
void RunBinaryLaneOpTest(
    ExecutionTier execution_tier, LowerSimd lower_simd, WasmOpcode simd_op,
    const std::array<T, kSimd128Size / sizeof(T)>& expected) {
  WasmRunner<int32_t> r(execution_tier, lower_simd);
  // Set up two test patterns as globals, e.g. [0, 1, 2, 3] and [4, 5, 6, 7].
  T* src0 = r.builder().AddGlobal<T>(kWasmS128);
  T* src1 = r.builder().AddGlobal<T>(kWasmS128);
  static const int kElems = kSimd128Size / sizeof(T);
  for (int i = 0; i < kElems; i++) {
    WriteLittleEndianValue<T>(&src0[i], i);
    WriteLittleEndianValue<T>(&src1[i], kElems + i);
  }
  if (simd_op == kExprS8x16Shuffle) {
    BUILD(r,
          WASM_SET_GLOBAL(0, WASM_SIMD_S8x16_SHUFFLE_OP(simd_op, expected,
                                                        WASM_GET_GLOBAL(0),
                                                        WASM_GET_GLOBAL(1))),
          WASM_ONE);
  } else {
    BUILD(r,
          WASM_SET_GLOBAL(0, WASM_SIMD_BINOP(simd_op, WASM_GET_GLOBAL(0),
                                             WASM_GET_GLOBAL(1))),
          WASM_ONE);
  }

  CHECK_EQ(1, r.Call());
  for (size_t i = 0; i < expected.size(); i++) {
    CHECK_EQ(ReadLittleEndianValue<T>(&src0[i]), expected[i]);
  }
}

WASM_SIMD_TEST(I32x4AddHoriz) {
  // Inputs are [0 1 2 3] and [4 5 6 7].
  RunBinaryLaneOpTest<int32_t>(execution_tier, lower_simd, kExprI32x4AddHoriz,
                               {{1, 5, 9, 13}});
}

WASM_SIMD_TEST(I16x8AddHoriz) {
  // Inputs are [0 1 2 3 4 5 6 7] and [8 9 10 11 12 13 14 15].
  RunBinaryLaneOpTest<int16_t>(execution_tier, lower_simd, kExprI16x8AddHoriz,
                               {{1, 5, 9, 13, 17, 21, 25, 29}});
}

WASM_SIMD_TEST(F32x4AddHoriz) {
  // Inputs are [0.0f 1.0f 2.0f 3.0f] and [4.0f 5.0f 6.0f 7.0f].
  RunBinaryLaneOpTest<float>(execution_tier, lower_simd, kExprF32x4AddHoriz,
                             {{1.0f, 5.0f, 9.0f, 13.0f}});
}

// Test shuffle ops.
void RunShuffleOpTest(ExecutionTier execution_tier, LowerSimd lower_simd,
                      WasmOpcode simd_op,
                      const std::array<int8_t, kSimd128Size>& shuffle) {
  // Test the original shuffle.
  RunBinaryLaneOpTest<int8_t>(execution_tier, lower_simd, simd_op, shuffle);

  // Test a non-canonical (inputs reversed) version of the shuffle.
  std::array<int8_t, kSimd128Size> other_shuffle(shuffle);
  for (size_t i = 0; i < shuffle.size(); ++i) other_shuffle[i] ^= kSimd128Size;
  RunBinaryLaneOpTest<int8_t>(execution_tier, lower_simd, simd_op,
                              other_shuffle);

  // Test the swizzle (one-operand) version of the shuffle.
  std::array<int8_t, kSimd128Size> swizzle(shuffle);
  for (size_t i = 0; i < shuffle.size(); ++i) swizzle[i] &= (kSimd128Size - 1);
  RunBinaryLaneOpTest<int8_t>(execution_tier, lower_simd, simd_op, swizzle);

  // Test the non-canonical swizzle (one-operand) version of the shuffle.
  std::array<int8_t, kSimd128Size> other_swizzle(shuffle);
  for (size_t i = 0; i < shuffle.size(); ++i) other_swizzle[i] |= kSimd128Size;
  RunBinaryLaneOpTest<int8_t>(execution_tier, lower_simd, simd_op,
                              other_swizzle);
}

#define SHUFFLE_LIST(V)  \
  V(S128Identity)        \
  V(S32x4Dup)            \
  V(S32x4ZipLeft)        \
  V(S32x4ZipRight)       \
  V(S32x4UnzipLeft)      \
  V(S32x4UnzipRight)     \
  V(S32x4TransposeLeft)  \
  V(S32x4TransposeRight) \
  V(S32x2Reverse)        \
  V(S32x4Irregular)      \
  V(S16x8Dup)            \
  V(S16x8ZipLeft)        \
  V(S16x8ZipRight)       \
  V(S16x8UnzipLeft)      \
  V(S16x8UnzipRight)     \
  V(S16x8TransposeLeft)  \
  V(S16x8TransposeRight) \
  V(S16x4Reverse)        \
  V(S16x2Reverse)        \
  V(S16x8Irregular)      \
  V(S8x16Dup)            \
  V(S8x16ZipLeft)        \
  V(S8x16ZipRight)       \
  V(S8x16UnzipLeft)      \
  V(S8x16UnzipRight)     \
  V(S8x16TransposeLeft)  \
  V(S8x16TransposeRight) \
  V(S8x8Reverse)         \
  V(S8x4Reverse)         \
  V(S8x2Reverse)         \
  V(S8x16Irregular)

enum ShuffleKey {
#define SHUFFLE_ENUM_VALUE(Name) k##Name,
  SHUFFLE_LIST(SHUFFLE_ENUM_VALUE)
#undef SHUFFLE_ENUM_VALUE
      kNumShuffleKeys
};

using Shuffle = std::array<int8_t, kSimd128Size>;
using ShuffleMap = std::map<ShuffleKey, const Shuffle>;

ShuffleMap test_shuffles = {
    {kS128Identity,
     {{16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31}}},
    {kS32x4Dup,
     {{16, 17, 18, 19, 16, 17, 18, 19, 16, 17, 18, 19, 16, 17, 18, 19}}},
    {kS32x4ZipLeft, {{0, 1, 2, 3, 16, 17, 18, 19, 4, 5, 6, 7, 20, 21, 22, 23}}},
    {kS32x4ZipRight,
     {{8, 9, 10, 11, 24, 25, 26, 27, 12, 13, 14, 15, 28, 29, 30, 31}}},
    {kS32x4UnzipLeft,
     {{0, 1, 2, 3, 8, 9, 10, 11, 16, 17, 18, 19, 24, 25, 26, 27}}},
    {kS32x4UnzipRight,
     {{4, 5, 6, 7, 12, 13, 14, 15, 20, 21, 22, 23, 28, 29, 30, 31}}},
    {kS32x4TransposeLeft,
     {{0, 1, 2, 3, 16, 17, 18, 19, 8, 9, 10, 11, 24, 25, 26, 27}}},
    {kS32x4TransposeRight,
     {{4, 5, 6, 7, 20, 21, 22, 23, 12, 13, 14, 15, 28, 29, 30, 31}}},
    {kS32x2Reverse,  // swizzle only
     {{4, 5, 6, 7, 0, 1, 2, 3, 12, 13, 14, 15, 8, 9, 10, 11}}},
    {kS32x4Irregular,
     {{0, 1, 2, 3, 16, 17, 18, 19, 16, 17, 18, 19, 20, 21, 22, 23}}},
    {kS16x8Dup,
     {{18, 19, 18, 19, 18, 19, 18, 19, 18, 19, 18, 19, 18, 19, 18, 19}}},
    {kS16x8ZipLeft, {{0, 1, 16, 17, 2, 3, 18, 19, 4, 5, 20, 21, 6, 7, 22, 23}}},
    {kS16x8ZipRight,
     {{8, 9, 24, 25, 10, 11, 26, 27, 12, 13, 28, 29, 14, 15, 30, 31}}},
    {kS16x8UnzipLeft,
     {{0, 1, 4, 5, 8, 9, 12, 13, 16, 17, 20, 21, 24, 25, 28, 29}}},
    {kS16x8UnzipRight,
     {{2, 3, 6, 7, 10, 11, 14, 15, 18, 19, 22, 23, 26, 27, 30, 31}}},
    {kS16x8TransposeLeft,
     {{0, 1, 16, 17, 4, 5, 20, 21, 8, 9, 24, 25, 12, 13, 28, 29}}},
    {kS16x8TransposeRight,
     {{2, 3, 18, 19, 6, 7, 22, 23, 10, 11, 26, 27, 14, 15, 30, 31}}},
    {kS16x4Reverse,  // swizzle only
     {{6, 7, 4, 5, 2, 3, 0, 1, 14, 15, 12, 13, 10, 11, 8, 9}}},
    {kS16x2Reverse,  // swizzle only
     {{2, 3, 0, 1, 6, 7, 4, 5, 10, 11, 8, 9, 14, 15, 12, 13}}},
    {kS16x8Irregular,
     {{0, 1, 16, 17, 16, 17, 0, 1, 4, 5, 20, 21, 6, 7, 22, 23}}},
    {kS8x16Dup,
     {{19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19}}},
    {kS8x16ZipLeft, {{0, 16, 1, 17, 2, 18, 3, 19, 4, 20, 5, 21, 6, 22, 7, 23}}},
    {kS8x16ZipRight,
     {{8, 24, 9, 25, 10, 26, 11, 27, 12, 28, 13, 29, 14, 30, 15, 31}}},
    {kS8x16UnzipLeft,
     {{0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30}}},
    {kS8x16UnzipRight,
     {{1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31}}},
    {kS8x16TransposeLeft,
     {{0, 16, 2, 18, 4, 20, 6, 22, 8, 24, 10, 26, 12, 28, 14, 30}}},
    {kS8x16TransposeRight,
     {{1, 17, 3, 19, 5, 21, 7, 23, 9, 25, 11, 27, 13, 29, 15, 31}}},
    {kS8x8Reverse,  // swizzle only
     {{7, 6, 5, 4, 3, 2, 1, 0, 15, 14, 13, 12, 11, 10, 9, 8}}},
    {kS8x4Reverse,  // swizzle only
     {{3, 2, 1, 0, 7, 6, 5, 4, 11, 10, 9, 8, 15, 14, 13, 12}}},
    {kS8x2Reverse,  // swizzle only
     {{1, 0, 3, 2, 5, 4, 7, 6, 9, 8, 11, 10, 13, 12, 15, 14}}},
    {kS8x16Irregular,
     {{0, 16, 0, 16, 2, 18, 3, 19, 4, 20, 5, 21, 6, 22, 7, 23}}},
};

#define SHUFFLE_TEST(Name)                                          \
  WASM_SIMD_TEST(Name) {                                            \
    ShuffleMap::const_iterator it = test_shuffles.find(k##Name);    \
    DCHECK_NE(it, test_shuffles.end());                             \
    RunShuffleOpTest(execution_tier, lower_simd, kExprS8x16Shuffle, \
                     it->second);                                   \
  }
SHUFFLE_LIST(SHUFFLE_TEST)
#undef SHUFFLE_TEST
#undef SHUFFLE_LIST

// Test shuffles that blend the two vectors (elements remain in their lanes.)
WASM_SIMD_TEST(S8x16Blend) {
  std::array<int8_t, kSimd128Size> expected;
  for (int bias = 1; bias < kSimd128Size; bias++) {
    for (int i = 0; i < bias; i++) expected[i] = i;
    for (int i = bias; i < kSimd128Size; i++) expected[i] = i + kSimd128Size;
    RunShuffleOpTest(execution_tier, lower_simd, kExprS8x16Shuffle, expected);
  }
}

// Test shuffles that concatenate the two vectors.
WASM_SIMD_TEST(S8x16Concat) {
  std::array<int8_t, kSimd128Size> expected;
  // n is offset or bias of concatenation.
  for (int n = 1; n < kSimd128Size; ++n) {
    int i = 0;
    // last kLanes - n bytes of first vector.
    for (int j = n; j < kSimd128Size; ++j) {
      expected[i++] = j;
    }
    // first n bytes of second vector
    for (int j = 0; j < n; ++j) {
      expected[i++] = j + kSimd128Size;
    }
    RunShuffleOpTest(execution_tier, lower_simd, kExprS8x16Shuffle, expected);
  }
}

// Combine 3 shuffles a, b, and c by applying both a and b and then applying c
// to those two results.
Shuffle Combine(const Shuffle& a, const Shuffle& b, const Shuffle& c) {
  Shuffle result;
  for (int i = 0; i < kSimd128Size; ++i) {
    result[i] = c[i] < kSimd128Size ? a[c[i]] : b[c[i] - kSimd128Size];
  }
  return result;
}

const Shuffle& GetRandomTestShuffle(v8::base::RandomNumberGenerator* rng) {
  return test_shuffles[static_cast<ShuffleKey>(rng->NextInt(kNumShuffleKeys))];
}

// Test shuffles that are random combinations of 3 test shuffles. Completely
// random shuffles almost always generate the slow general shuffle code, so
// don't exercise as many code paths.
WASM_SIMD_TEST(S8x16ShuffleFuzz) {
  v8::base::RandomNumberGenerator* rng = CcTest::random_number_generator();
  static const int kTests = 100;
  for (int i = 0; i < kTests; ++i) {
    auto shuffle = Combine(GetRandomTestShuffle(rng), GetRandomTestShuffle(rng),
                           GetRandomTestShuffle(rng));
    RunShuffleOpTest(execution_tier, lower_simd, kExprS8x16Shuffle, shuffle);
  }
}

void AppendShuffle(const Shuffle& shuffle, std::vector<byte>* buffer) {
  byte opcode[] = {WASM_SIMD_OP(kExprS8x16Shuffle)};
  for (size_t i = 0; i < arraysize(opcode); ++i) buffer->push_back(opcode[i]);
  for (size_t i = 0; i < kSimd128Size; ++i) buffer->push_back((shuffle[i]));
}

void BuildShuffle(std::vector<Shuffle>& shuffles, std::vector<byte>* buffer) {
  // Perform the leaf shuffles on globals 0 and 1.
  size_t row_index = (shuffles.size() - 1) / 2;
  for (size_t i = row_index; i < shuffles.size(); ++i) {
    byte operands[] = {WASM_GET_GLOBAL(0), WASM_GET_GLOBAL(1)};
    for (size_t j = 0; j < arraysize(operands); ++j)
      buffer->push_back(operands[j]);
    AppendShuffle(shuffles[i], buffer);
  }
  // Now perform inner shuffles in the correct order on operands on the stack.
  do {
    for (size_t i = row_index / 2; i < row_index; ++i) {
      AppendShuffle(shuffles[i], buffer);
    }
    row_index /= 2;
  } while (row_index != 0);
  byte epilog[] = {kExprSetGlobal, static_cast<byte>(0), WASM_ONE};
  for (size_t j = 0; j < arraysize(epilog); ++j) buffer->push_back(epilog[j]);
}

void RunWasmCode(ExecutionTier execution_tier, LowerSimd lower_simd,
                 const std::vector<byte>& code,
                 std::array<int8_t, kSimd128Size>* result) {
  WasmRunner<int32_t> r(execution_tier, lower_simd);
  // Set up two test patterns as globals, e.g. [0, 1, 2, 3] and [4, 5, 6, 7].
  int8_t* src0 = r.builder().AddGlobal<int8_t>(kWasmS128);
  int8_t* src1 = r.builder().AddGlobal<int8_t>(kWasmS128);
  for (int i = 0; i < kSimd128Size; ++i) {
    WriteLittleEndianValue<int8_t>(&src0[i], i);
    WriteLittleEndianValue<int8_t>(&src1[i], kSimd128Size + i);
  }
  r.Build(code.data(), code.data() + code.size());
  CHECK_EQ(1, r.Call());
  for (size_t i = 0; i < kSimd128Size; i++) {
    (*result)[i] = ReadLittleEndianValue<int8_t>(&src0[i]);
  }
}

// Test multiple shuffles executed in sequence.
WASM_SIMD_COMPILED_TEST(S8x16MultiShuffleFuzz) {
  v8::base::RandomNumberGenerator* rng = CcTest::random_number_generator();
  static const int kShuffles = 100;
  for (int i = 0; i < kShuffles; ++i) {
    // Create an odd number in [3..23] of random test shuffles so we can build
    // a complete binary tree (stored as a heap) of shuffle operations. The leaf
    // shuffles operate on the test pattern inputs, while the interior shuffles
    // operate on the results of the two child shuffles.
    int num_shuffles = rng->NextInt(10) * 2 + 3;
    std::vector<Shuffle> shuffles;
    for (int j = 0; j < num_shuffles; ++j) {
      shuffles.push_back(GetRandomTestShuffle(rng));
    }
    // Generate the code for the shuffle expression.
    std::vector<byte> buffer;
    BuildShuffle(shuffles, &buffer);

    // Run the code using the interpreter to get the expected result.
    std::array<int8_t, kSimd128Size> expected;
    RunWasmCode(ExecutionTier::kInterpreter, kNoLowerSimd, buffer, &expected);
    // Run the SIMD or scalar lowered compiled code and compare results.
    std::array<int8_t, kSimd128Size> result;
    RunWasmCode(execution_tier, lower_simd, buffer, &result);
    for (size_t i = 0; i < kSimd128Size; ++i) {
      CHECK_EQ(result[i], expected[i]);
    }
  }
}

// Boolean unary operations are 'AllTrue' and 'AnyTrue', which return an integer
// result. Use relational ops on numeric vectors to create the boolean vector
// test inputs. Test inputs with all true, all false, one true, and one false.
#define WASM_SIMD_BOOL_REDUCTION_TEST(format, lanes)                           \
  WASM_SIMD_TEST(ReductionTest##lanes) {                                       \
    WasmRunner<int32_t> r(execution_tier, lower_simd);                         \
    byte zero = r.AllocateLocal(kWasmS128);                                    \
    byte one_one = r.AllocateLocal(kWasmS128);                                 \
    byte reduced = r.AllocateLocal(kWasmI32);                                  \
    BUILD(r, WASM_SET_LOCAL(zero, WASM_SIMD_I##format##_SPLAT(WASM_ZERO)),     \
          WASM_SET_LOCAL(                                                      \
              reduced, WASM_SIMD_UNOP(kExprS1x##lanes##AnyTrue,                \
                                      WASM_SIMD_BINOP(kExprI##format##Eq,      \
                                                      WASM_GET_LOCAL(zero),    \
                                                      WASM_GET_LOCAL(zero)))), \
          WASM_IF(WASM_I32_EQ(WASM_GET_LOCAL(reduced), WASM_ZERO),             \
                  WASM_RETURN1(WASM_ZERO)),                                    \
          WASM_SET_LOCAL(                                                      \
              reduced, WASM_SIMD_UNOP(kExprS1x##lanes##AnyTrue,                \
                                      WASM_SIMD_BINOP(kExprI##format##Ne,      \
                                                      WASM_GET_LOCAL(zero),    \
                                                      WASM_GET_LOCAL(zero)))), \
          WASM_IF(WASM_I32_NE(WASM_GET_LOCAL(reduced), WASM_ZERO),             \
                  WASM_RETURN1(WASM_ZERO)),                                    \
          WASM_SET_LOCAL(                                                      \
              reduced, WASM_SIMD_UNOP(kExprS1x##lanes##AllTrue,                \
                                      WASM_SIMD_BINOP(kExprI##format##Eq,      \
                                                      WASM_GET_LOCAL(zero),    \
                                                      WASM_GET_LOCAL(zero)))), \
          WASM_IF(WASM_I32_EQ(WASM_GET_LOCAL(reduced), WASM_ZERO),             \
                  WASM_RETURN1(WASM_ZERO)),                                    \
          WASM_SET_LOCAL(                                                      \
              reduced, WASM_SIMD_UNOP(kExprS1x##lanes##AllTrue,                \
                                      WASM_SIMD_BINOP(kExprI##format##Ne,      \
                                                      WASM_GET_LOCAL(zero),    \
                                                      WASM_GET_LOCAL(zero)))), \
          WASM_IF(WASM_I32_NE(WASM_GET_LOCAL(reduced), WASM_ZERO),             \
                  WASM_RETURN1(WASM_ZERO)),                                    \
          WASM_SET_LOCAL(one_one,                                              \
                         WASM_SIMD_I##format##_REPLACE_LANE(                   \
                             lanes - 1, WASM_GET_LOCAL(zero), WASM_ONE)),      \
          WASM_SET_LOCAL(                                                      \
              reduced, WASM_SIMD_UNOP(kExprS1x##lanes##AnyTrue,                \
                                      WASM_SIMD_BINOP(kExprI##format##Eq,      \
                                                      WASM_GET_LOCAL(one_one), \
                                                      WASM_GET_LOCAL(zero)))), \
          WASM_IF(WASM_I32_EQ(WASM_GET_LOCAL(reduced), WASM_ZERO),             \
                  WASM_RETURN1(WASM_ZERO)),                                    \
          WASM_SET_LOCAL(                                                      \
              reduced, WASM_SIMD_UNOP(kExprS1x##lanes##AnyTrue,                \
                                      WASM_SIMD_BINOP(kExprI##format##Ne,      \
                                                      WASM_GET_LOCAL(one_one), \
                                                      WASM_GET_LOCAL(zero)))), \
          WASM_IF(WASM_I32_EQ(WASM_GET_LOCAL(reduced), WASM_ZERO),             \
                  WASM_RETURN1(WASM_ZERO)),                                    \
          WASM_SET_LOCAL(                                                      \
              reduced, WASM_SIMD_UNOP(kExprS1x##lanes##AllTrue,                \
                                      WASM_SIMD_BINOP(kExprI##format##Eq,      \
                                                      WASM_GET_LOCAL(one_one), \
                                                      WASM_GET_LOCAL(zero)))), \
          WASM_IF(WASM_I32_NE(WASM_GET_LOCAL(reduced), WASM_ZERO),             \
                  WASM_RETURN1(WASM_ZERO)),                                    \
          WASM_SET_LOCAL(                                                      \
              reduced, WASM_SIMD_UNOP(kExprS1x##lanes##AllTrue,                \
                                      WASM_SIMD_BINOP(kExprI##format##Ne,      \
                                                      WASM_GET_LOCAL(one_one), \
                                                      WASM_GET_LOCAL(zero)))), \
          WASM_IF(WASM_I32_NE(WASM_GET_LOCAL(reduced), WASM_ZERO),             \
                  WASM_RETURN1(WASM_ZERO)),                                    \
          WASM_ONE);                                                           \
    CHECK_EQ(1, r.Call());                                                     \
  }

WASM_SIMD_BOOL_REDUCTION_TEST(32x4, 4)
WASM_SIMD_BOOL_REDUCTION_TEST(16x8, 8)
WASM_SIMD_BOOL_REDUCTION_TEST(8x16, 16)

WASM_SIMD_TEST(SimdI32x4ExtractWithF32x4) {
  WasmRunner<int32_t> r(execution_tier, lower_simd);
  BUILD(r, WASM_IF_ELSE_I(
               WASM_I32_EQ(WASM_SIMD_I32x4_EXTRACT_LANE(
                               0, WASM_SIMD_F32x4_SPLAT(WASM_F32(30.5))),
                           WASM_I32_REINTERPRET_F32(WASM_F32(30.5))),
               WASM_I32V(1), WASM_I32V(0)));
  CHECK_EQ(1, r.Call());
}

WASM_SIMD_TEST(SimdF32x4ExtractWithI32x4) {
  WasmRunner<int32_t> r(execution_tier, lower_simd);
  BUILD(r,
        WASM_IF_ELSE_I(WASM_F32_EQ(WASM_SIMD_F32x4_EXTRACT_LANE(
                                       0, WASM_SIMD_I32x4_SPLAT(WASM_I32V(15))),
                                   WASM_F32_REINTERPRET_I32(WASM_I32V(15))),
                       WASM_I32V(1), WASM_I32V(0)));
  CHECK_EQ(1, r.Call());
}

WASM_SIMD_TEST(SimdF32x4ExtractLane) {
  WasmRunner<float> r(execution_tier, lower_simd);
  r.AllocateLocal(kWasmF32);
  r.AllocateLocal(kWasmS128);
  BUILD(r,
        WASM_SET_LOCAL(0, WASM_SIMD_F32x4_EXTRACT_LANE(
                              0, WASM_SIMD_F32x4_SPLAT(WASM_F32(30.5)))),
        WASM_SET_LOCAL(1, WASM_SIMD_F32x4_SPLAT(WASM_GET_LOCAL(0))),
        WASM_SIMD_F32x4_EXTRACT_LANE(1, WASM_GET_LOCAL(1)));
  CHECK_EQ(30.5, r.Call());
}

WASM_SIMD_TEST(SimdF32x4AddWithI32x4) {
  // Choose two floating point values whose sum is normal and exactly
  // representable as a float.
  const int kOne = 0x3F800000;
  const int kTwo = 0x40000000;
  WasmRunner<int32_t> r(execution_tier, lower_simd);
  BUILD(r,
        WASM_IF_ELSE_I(
            WASM_F32_EQ(
                WASM_SIMD_F32x4_EXTRACT_LANE(
                    0, WASM_SIMD_BINOP(kExprF32x4Add,
                                       WASM_SIMD_I32x4_SPLAT(WASM_I32V(kOne)),
                                       WASM_SIMD_I32x4_SPLAT(WASM_I32V(kTwo)))),
                WASM_F32_ADD(WASM_F32_REINTERPRET_I32(WASM_I32V(kOne)),
                             WASM_F32_REINTERPRET_I32(WASM_I32V(kTwo)))),
            WASM_I32V(1), WASM_I32V(0)));
  CHECK_EQ(1, r.Call());
}

WASM_SIMD_TEST(SimdI32x4AddWithF32x4) {
  WasmRunner<int32_t> r(execution_tier, lower_simd);
  BUILD(r,
        WASM_IF_ELSE_I(
            WASM_I32_EQ(
                WASM_SIMD_I32x4_EXTRACT_LANE(
                    0, WASM_SIMD_BINOP(kExprI32x4Add,
                                       WASM_SIMD_F32x4_SPLAT(WASM_F32(21.25)),
                                       WASM_SIMD_F32x4_SPLAT(WASM_F32(31.5)))),
                WASM_I32_ADD(WASM_I32_REINTERPRET_F32(WASM_F32(21.25)),
                             WASM_I32_REINTERPRET_F32(WASM_F32(31.5)))),
            WASM_I32V(1), WASM_I32V(0)));
  CHECK_EQ(1, r.Call());
}

WASM_SIMD_TEST(SimdI32x4Local) {
  WasmRunner<int32_t> r(execution_tier, lower_simd);
  r.AllocateLocal(kWasmS128);
  BUILD(r, WASM_SET_LOCAL(0, WASM_SIMD_I32x4_SPLAT(WASM_I32V(31))),

        WASM_SIMD_I32x4_EXTRACT_LANE(0, WASM_GET_LOCAL(0)));
  CHECK_EQ(31, r.Call());
}

WASM_SIMD_TEST(SimdI32x4SplatFromExtract) {
  WasmRunner<int32_t> r(execution_tier, lower_simd);
  r.AllocateLocal(kWasmI32);
  r.AllocateLocal(kWasmS128);
  BUILD(r, WASM_SET_LOCAL(0, WASM_SIMD_I32x4_EXTRACT_LANE(
                                 0, WASM_SIMD_I32x4_SPLAT(WASM_I32V(76)))),
        WASM_SET_LOCAL(1, WASM_SIMD_I32x4_SPLAT(WASM_GET_LOCAL(0))),
        WASM_SIMD_I32x4_EXTRACT_LANE(1, WASM_GET_LOCAL(1)));
  CHECK_EQ(76, r.Call());
}

WASM_SIMD_TEST(SimdI32x4For) {
  WasmRunner<int32_t> r(execution_tier, lower_simd);
  r.AllocateLocal(kWasmI32);
  r.AllocateLocal(kWasmS128);
  BUILD(r,

        WASM_SET_LOCAL(1, WASM_SIMD_I32x4_SPLAT(WASM_I32V(31))),
        WASM_SET_LOCAL(1, WASM_SIMD_I32x4_REPLACE_LANE(1, WASM_GET_LOCAL(1),
                                                       WASM_I32V(53))),
        WASM_SET_LOCAL(1, WASM_SIMD_I32x4_REPLACE_LANE(2, WASM_GET_LOCAL(1),
                                                       WASM_I32V(23))),
        WASM_SET_LOCAL(0, WASM_I32V(0)),
        WASM_LOOP(
            WASM_SET_LOCAL(
                1, WASM_SIMD_BINOP(kExprI32x4Add, WASM_GET_LOCAL(1),
                                   WASM_SIMD_I32x4_SPLAT(WASM_I32V(1)))),
            WASM_IF(WASM_I32_NE(WASM_INC_LOCAL(0), WASM_I32V(5)), WASM_BR(1))),
        WASM_SET_LOCAL(0, WASM_I32V(1)),
        WASM_IF(WASM_I32_NE(WASM_SIMD_I32x4_EXTRACT_LANE(0, WASM_GET_LOCAL(1)),
                            WASM_I32V(36)),
                WASM_SET_LOCAL(0, WASM_I32V(0))),
        WASM_IF(WASM_I32_NE(WASM_SIMD_I32x4_EXTRACT_LANE(1, WASM_GET_LOCAL(1)),
                            WASM_I32V(58)),
                WASM_SET_LOCAL(0, WASM_I32V(0))),
        WASM_IF(WASM_I32_NE(WASM_SIMD_I32x4_EXTRACT_LANE(2, WASM_GET_LOCAL(1)),
                            WASM_I32V(28)),
                WASM_SET_LOCAL(0, WASM_I32V(0))),
        WASM_IF(WASM_I32_NE(WASM_SIMD_I32x4_EXTRACT_LANE(3, WASM_GET_LOCAL(1)),
                            WASM_I32V(36)),
                WASM_SET_LOCAL(0, WASM_I32V(0))),
        WASM_GET_LOCAL(0));
  CHECK_EQ(1, r.Call());
}

WASM_SIMD_TEST(SimdF32x4For) {
  WasmRunner<int32_t> r(execution_tier, lower_simd);
  r.AllocateLocal(kWasmI32);
  r.AllocateLocal(kWasmS128);
  BUILD(r, WASM_SET_LOCAL(1, WASM_SIMD_F32x4_SPLAT(WASM_F32(21.25))),
        WASM_SET_LOCAL(1, WASM_SIMD_F32x4_REPLACE_LANE(3, WASM_GET_LOCAL(1),
                                                       WASM_F32(19.5))),
        WASM_SET_LOCAL(0, WASM_I32V(0)),
        WASM_LOOP(
            WASM_SET_LOCAL(
                1, WASM_SIMD_BINOP(kExprF32x4Add, WASM_GET_LOCAL(1),
                                   WASM_SIMD_F32x4_SPLAT(WASM_F32(2.0)))),
            WASM_IF(WASM_I32_NE(WASM_INC_LOCAL(0), WASM_I32V(3)), WASM_BR(1))),
        WASM_SET_LOCAL(0, WASM_I32V(1)),
        WASM_IF(WASM_F32_NE(WASM_SIMD_F32x4_EXTRACT_LANE(0, WASM_GET_LOCAL(1)),
                            WASM_F32(27.25)),
                WASM_SET_LOCAL(0, WASM_I32V(0))),
        WASM_IF(WASM_F32_NE(WASM_SIMD_F32x4_EXTRACT_LANE(3, WASM_GET_LOCAL(1)),
                            WASM_F32(25.5)),
                WASM_SET_LOCAL(0, WASM_I32V(0))),
        WASM_GET_LOCAL(0));
  CHECK_EQ(1, r.Call());
}

template <typename T, int numLanes = 4>
void SetVectorByLanes(T* v, const std::array<T, numLanes>& arr) {
  for (int lane = 0; lane < numLanes; lane++) {
    WriteLittleEndianValue<T>(&v[lane], arr[lane]);
  }
}

template <typename T>
const T GetScalar(T* v, int lane) {
  constexpr int kElems = kSimd128Size / sizeof(T);
  const int index = lane;
  USE(kElems);
  DCHECK(index >= 0 && index < kElems);
  return ReadLittleEndianValue<T>(&v[index]);
}

WASM_SIMD_TEST(SimdI32x4GetGlobal) {
  WasmRunner<int32_t, int32_t> r(execution_tier, lower_simd);
  // Pad the globals with a few unused slots to get a non-zero offset.
  r.builder().AddGlobal<int32_t>(kWasmI32);  // purposefully unused
  r.builder().AddGlobal<int32_t>(kWasmI32);  // purposefully unused
  r.builder().AddGlobal<int32_t>(kWasmI32);  // purposefully unused
  r.builder().AddGlobal<int32_t>(kWasmI32);  // purposefully unused
  int32_t* global = r.builder().AddGlobal<int32_t>(kWasmS128);
  SetVectorByLanes(global, {{0, 1, 2, 3}});
  r.AllocateLocal(kWasmI32);
  BUILD(
      r, WASM_SET_LOCAL(1, WASM_I32V(1)),
      WASM_IF(WASM_I32_NE(WASM_I32V(0),
                          WASM_SIMD_I32x4_EXTRACT_LANE(0, WASM_GET_GLOBAL(4))),
              WASM_SET_LOCAL(1, WASM_I32V(0))),
      WASM_IF(WASM_I32_NE(WASM_I32V(1),
                          WASM_SIMD_I32x4_EXTRACT_LANE(1, WASM_GET_GLOBAL(4))),
              WASM_SET_LOCAL(1, WASM_I32V(0))),
      WASM_IF(WASM_I32_NE(WASM_I32V(2),
                          WASM_SIMD_I32x4_EXTRACT_LANE(2, WASM_GET_GLOBAL(4))),
              WASM_SET_LOCAL(1, WASM_I32V(0))),
      WASM_IF(WASM_I32_NE(WASM_I32V(3),
                          WASM_SIMD_I32x4_EXTRACT_LANE(3, WASM_GET_GLOBAL(4))),
              WASM_SET_LOCAL(1, WASM_I32V(0))),
      WASM_GET_LOCAL(1));
  CHECK_EQ(1, r.Call(0));
}

WASM_SIMD_TEST(SimdI32x4SetGlobal) {
  WasmRunner<int32_t, int32_t> r(execution_tier, lower_simd);
  // Pad the globals with a few unused slots to get a non-zero offset.
  r.builder().AddGlobal<int32_t>(kWasmI32);  // purposefully unused
  r.builder().AddGlobal<int32_t>(kWasmI32);  // purposefully unused
  r.builder().AddGlobal<int32_t>(kWasmI32);  // purposefully unused
  r.builder().AddGlobal<int32_t>(kWasmI32);  // purposefully unused
  int32_t* global = r.builder().AddGlobal<int32_t>(kWasmS128);
  BUILD(r, WASM_SET_GLOBAL(4, WASM_SIMD_I32x4_SPLAT(WASM_I32V(23))),
        WASM_SET_GLOBAL(4, WASM_SIMD_I32x4_REPLACE_LANE(1, WASM_GET_GLOBAL(4),
                                                        WASM_I32V(34))),
        WASM_SET_GLOBAL(4, WASM_SIMD_I32x4_REPLACE_LANE(2, WASM_GET_GLOBAL(4),
                                                        WASM_I32V(45))),
        WASM_SET_GLOBAL(4, WASM_SIMD_I32x4_REPLACE_LANE(3, WASM_GET_GLOBAL(4),
                                                        WASM_I32V(56))),
        WASM_I32V(1));
  CHECK_EQ(1, r.Call(0));
  CHECK_EQ(GetScalar(global, 0), 23);
  CHECK_EQ(GetScalar(global, 1), 34);
  CHECK_EQ(GetScalar(global, 2), 45);
  CHECK_EQ(GetScalar(global, 3), 56);
}

WASM_SIMD_TEST(SimdF32x4GetGlobal) {
  WasmRunner<int32_t, int32_t> r(execution_tier, lower_simd);
  float* global = r.builder().AddGlobal<float>(kWasmS128);
  SetVectorByLanes<float>(global, {{0.0, 1.5, 2.25, 3.5}});
  r.AllocateLocal(kWasmI32);
  BUILD(
      r, WASM_SET_LOCAL(1, WASM_I32V(1)),
      WASM_IF(WASM_F32_NE(WASM_F32(0.0),
                          WASM_SIMD_F32x4_EXTRACT_LANE(0, WASM_GET_GLOBAL(0))),
              WASM_SET_LOCAL(1, WASM_I32V(0))),
      WASM_IF(WASM_F32_NE(WASM_F32(1.5),
                          WASM_SIMD_F32x4_EXTRACT_LANE(1, WASM_GET_GLOBAL(0))),
              WASM_SET_LOCAL(1, WASM_I32V(0))),
      WASM_IF(WASM_F32_NE(WASM_F32(2.25),
                          WASM_SIMD_F32x4_EXTRACT_LANE(2, WASM_GET_GLOBAL(0))),
              WASM_SET_LOCAL(1, WASM_I32V(0))),
      WASM_IF(WASM_F32_NE(WASM_F32(3.5),
                          WASM_SIMD_F32x4_EXTRACT_LANE(3, WASM_GET_GLOBAL(0))),
              WASM_SET_LOCAL(1, WASM_I32V(0))),
      WASM_GET_LOCAL(1));
  CHECK_EQ(1, r.Call(0));
}

WASM_SIMD_TEST(SimdF32x4SetGlobal) {
  WasmRunner<int32_t, int32_t> r(execution_tier, lower_simd);
  float* global = r.builder().AddGlobal<float>(kWasmS128);
  BUILD(r, WASM_SET_GLOBAL(0, WASM_SIMD_F32x4_SPLAT(WASM_F32(13.5))),
        WASM_SET_GLOBAL(0, WASM_SIMD_F32x4_REPLACE_LANE(1, WASM_GET_GLOBAL(0),
                                                        WASM_F32(45.5))),
        WASM_SET_GLOBAL(0, WASM_SIMD_F32x4_REPLACE_LANE(2, WASM_GET_GLOBAL(0),
                                                        WASM_F32(32.25))),
        WASM_SET_GLOBAL(0, WASM_SIMD_F32x4_REPLACE_LANE(3, WASM_GET_GLOBAL(0),
                                                        WASM_F32(65.0))),
        WASM_I32V(1));
  CHECK_EQ(1, r.Call(0));
  CHECK_EQ(GetScalar(global, 0), 13.5f);
  CHECK_EQ(GetScalar(global, 1), 45.5f);
  CHECK_EQ(GetScalar(global, 2), 32.25f);
  CHECK_EQ(GetScalar(global, 3), 65.0f);
}

WASM_SIMD_COMPILED_TEST(SimdLoadStoreLoad) {
  WasmRunner<int32_t> r(execution_tier, lower_simd);
  int32_t* memory =
      r.builder().AddMemoryElems<int32_t>(kWasmPageSize / sizeof(int32_t));
  // Load memory, store it, then reload it and extract the first lane. Use a
  // non-zero offset into the memory of 1 lane (4 bytes) to test indexing.
  BUILD(r, WASM_SIMD_STORE_MEM(WASM_I32V(4), WASM_SIMD_LOAD_MEM(WASM_I32V(4))),
        WASM_SIMD_I32x4_EXTRACT_LANE(0, WASM_SIMD_LOAD_MEM(WASM_I32V(4))));

  FOR_INT32_INPUTS(i) {
    int32_t expected = i;
    r.builder().WriteMemory(&memory[1], expected);
    CHECK_EQ(expected, r.Call());
  }
}

#if V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_ARM64 || \
    V8_TARGET_ARCH_ARM
// V8:8665 - Tracking bug to enable reduction tests in the interpreter,
// and for SIMD lowering.
#define WASM_SIMD_ANYTRUE_TEST(format, lanes, max)                            \
  WASM_SIMD_TEST_NO_LOWERING(S##format##AnyTrue) {                            \
    WasmRunner<int32_t, int32_t> r(execution_tier, lower_simd);               \
    byte simd = r.AllocateLocal(kWasmS128);                                   \
    BUILD(                                                                    \
        r,                                                                    \
        WASM_SET_LOCAL(simd, WASM_SIMD_I##format##_SPLAT(WASM_GET_LOCAL(0))), \
        WASM_SIMD_UNOP(kExprS1x##lanes##AnyTrue, WASM_GET_LOCAL(simd)));      \
    DCHECK_EQ(1, r.Call(max));                                                \
    DCHECK_EQ(1, r.Call(5));                                                  \
    DCHECK_EQ(0, r.Call(0));                                                  \
  }
WASM_SIMD_ANYTRUE_TEST(32x4, 4, 0xffffffff)
WASM_SIMD_ANYTRUE_TEST(16x8, 8, 0xffff)
WASM_SIMD_ANYTRUE_TEST(8x16, 16, 0xff)

#define WASM_SIMD_ALLTRUE_TEST(format, lanes, max)                            \
  WASM_SIMD_TEST_NO_LOWERING(S##format##AllTrue) {                            \
    WasmRunner<int32_t, int32_t> r(execution_tier, lower_simd);               \
    byte simd = r.AllocateLocal(kWasmS128);                                   \
    BUILD(                                                                    \
        r,                                                                    \
        WASM_SET_LOCAL(simd, WASM_SIMD_I##format##_SPLAT(WASM_GET_LOCAL(0))), \
        WASM_SIMD_UNOP(kExprS1x##lanes##AllTrue, WASM_GET_LOCAL(simd)));      \
    DCHECK_EQ(1, r.Call(max));                                                \
    DCHECK_EQ(0, r.Call(0));                                                  \
  }
WASM_SIMD_ALLTRUE_TEST(32x4, 4, 0xffffffff)
WASM_SIMD_ALLTRUE_TEST(16x8, 8, 0xffff)
WASM_SIMD_ALLTRUE_TEST(8x16, 16, 0xff)
#endif  // V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_ARM64 ||
        // V8_TARGET_ARCH_ARM

WASM_SIMD_TEST(BitSelect) {
  WasmRunner<int32_t, int32_t> r(execution_tier, lower_simd);
  byte simd = r.AllocateLocal(kWasmS128);
  BUILD(r,
        WASM_SET_LOCAL(
            simd,
            WASM_SIMD_SELECT(32x4, WASM_SIMD_I32x4_SPLAT(WASM_I32V(0x01020304)),
                             WASM_SIMD_I32x4_SPLAT(WASM_I32V(0)),
                             WASM_SIMD_I32x4_SPLAT(WASM_GET_LOCAL(0)))),
        WASM_SIMD_I32x4_EXTRACT_LANE(0, WASM_GET_LOCAL(simd)));
  DCHECK_EQ(0x01020304, r.Call(0xFFFFFFFF));
}

void RunI8x16MixedRelationalOpTest(ExecutionTier execution_tier,
                                   LowerSimd lower_simd, WasmOpcode opcode,
                                   Int8BinOp expected_op) {
  WasmRunner<int32_t, int32_t, int32_t> r(execution_tier, lower_simd);
  byte value1 = 0, value2 = 1;
  byte temp1 = r.AllocateLocal(kWasmS128);
  byte temp2 = r.AllocateLocal(kWasmS128);
  byte temp3 = r.AllocateLocal(kWasmS128);
  BUILD(r, WASM_SET_LOCAL(temp1, WASM_SIMD_I8x16_SPLAT(WASM_GET_LOCAL(value1))),
        WASM_SET_LOCAL(temp2, WASM_SIMD_I16x8_SPLAT(WASM_GET_LOCAL(value2))),
        WASM_SET_LOCAL(temp3, WASM_SIMD_BINOP(opcode, WASM_GET_LOCAL(temp1),
                                              WASM_GET_LOCAL(temp2))),
        WASM_SIMD_I8x16_EXTRACT_LANE(0, WASM_GET_LOCAL(temp3)));

  DCHECK_EQ(expected_op(0xff, static_cast<uint8_t>(0x7fff)),
            r.Call(0xff, 0x7fff));
  DCHECK_EQ(expected_op(0xfe, static_cast<uint8_t>(0x7fff)),
            r.Call(0xfe, 0x7fff));
  DCHECK_EQ(expected_op(0xff, static_cast<uint8_t>(0x7ffe)),
            r.Call(0xff, 0x7ffe));
}

WASM_SIMD_TEST_NO_LOWERING(I8x16LeUMixed) {
  RunI8x16MixedRelationalOpTest(execution_tier, lower_simd, kExprI8x16LeU,
                                UnsignedLessEqual);
}
WASM_SIMD_TEST_NO_LOWERING(I8x16LtUMixed) {
  RunI8x16MixedRelationalOpTest(execution_tier, lower_simd, kExprI8x16LtU,
                                UnsignedLess);
}
WASM_SIMD_TEST_NO_LOWERING(I8x16GeUMixed) {
  RunI8x16MixedRelationalOpTest(execution_tier, lower_simd, kExprI8x16GeU,
                                UnsignedGreaterEqual);
}
WASM_SIMD_TEST_NO_LOWERING(I8x16GtUMixed) {
  RunI8x16MixedRelationalOpTest(execution_tier, lower_simd, kExprI8x16GtU,
                                UnsignedGreater);
}

void RunI16x8MixedRelationalOpTest(ExecutionTier execution_tier,
                                   LowerSimd lower_simd, WasmOpcode opcode,
                                   Int16BinOp expected_op) {
  WasmRunner<int32_t, int32_t, int32_t> r(execution_tier, lower_simd);
  byte value1 = 0, value2 = 1;
  byte temp1 = r.AllocateLocal(kWasmS128);
  byte temp2 = r.AllocateLocal(kWasmS128);
  byte temp3 = r.AllocateLocal(kWasmS128);
  BUILD(r, WASM_SET_LOCAL(temp1, WASM_SIMD_I16x8_SPLAT(WASM_GET_LOCAL(value1))),
        WASM_SET_LOCAL(temp2, WASM_SIMD_I32x4_SPLAT(WASM_GET_LOCAL(value2))),
        WASM_SET_LOCAL(temp3, WASM_SIMD_BINOP(opcode, WASM_GET_LOCAL(temp1),
                                              WASM_GET_LOCAL(temp2))),
        WASM_SIMD_I16x8_EXTRACT_LANE(0, WASM_GET_LOCAL(temp3)));

  DCHECK_EQ(expected_op(0xffff, static_cast<uint16_t>(0x7fffffff)),
            r.Call(0xffff, 0x7fffffff));
  DCHECK_EQ(expected_op(0xfeff, static_cast<uint16_t>(0x7fffffff)),
            r.Call(0xfeff, 0x7fffffff));
  DCHECK_EQ(expected_op(0xffff, static_cast<uint16_t>(0x7ffffeff)),
            r.Call(0xffff, 0x7ffffeff));
}

WASM_SIMD_TEST_NO_LOWERING(I16x8LeUMixed) {
  RunI16x8MixedRelationalOpTest(execution_tier, lower_simd, kExprI16x8LeU,
                                UnsignedLessEqual);
}
WASM_SIMD_TEST_NO_LOWERING(I16x8LtUMixed) {
  RunI16x8MixedRelationalOpTest(execution_tier, lower_simd, kExprI16x8LtU,
                                UnsignedLess);
}
WASM_SIMD_TEST_NO_LOWERING(I16x8GeUMixed) {
  RunI16x8MixedRelationalOpTest(execution_tier, lower_simd, kExprI16x8GeU,
                                UnsignedGreaterEqual);
}
WASM_SIMD_TEST_NO_LOWERING(I16x8GtUMixed) {
  RunI16x8MixedRelationalOpTest(execution_tier, lower_simd, kExprI16x8GtU,
                                UnsignedGreater);
}

#undef WASM_SIMD_TEST
#undef WASM_SIMD_CHECK_LANE
#undef TO_BYTE
#undef WASM_SIMD_OP
#undef WASM_SIMD_SPLAT
#undef WASM_SIMD_UNOP
#undef WASM_SIMD_BINOP
#undef WASM_SIMD_SHIFT_OP
#undef WASM_SIMD_CONCAT_OP
#undef WASM_SIMD_SELECT
#undef WASM_SIMD_F64x2_SPLAT
#undef WASM_SIMD_F32x4_SPLAT
#undef WASM_SIMD_F32x4_EXTRACT_LANE
#undef WASM_SIMD_F32x4_REPLACE_LANE
#undef WASM_SIMD_I64x2_SPLAT
#undef WASM_SIMD_I64x2_EXTRACT_LANE
#undef WASM_SIMD_I64x2_REPLACE_LANE
#undef WASM_SIMD_I32x4_SPLAT
#undef WASM_SIMD_I32x4_EXTRACT_LANE
#undef WASM_SIMD_I32x4_REPLACE_LANE
#undef WASM_SIMD_I16x8_SPLAT
#undef WASM_SIMD_I16x8_EXTRACT_LANE
#undef WASM_SIMD_I16x8_REPLACE_LANE
#undef WASM_SIMD_I8x16_SPLAT
#undef WASM_SIMD_I8x16_EXTRACT_LANE
#undef WASM_SIMD_I8x16_REPLACE_LANE
#undef WASM_SIMD_S8x16_SHUFFLE_OP
#undef WASM_SIMD_LOAD_MEM
#undef WASM_SIMD_STORE_MEM
#undef WASM_SIMD_SELECT_TEST
#undef WASM_SIMD_NON_CANONICAL_SELECT_TEST
#undef WASM_SIMD_COMPILED_TEST
#undef WASM_SIMD_BOOL_REDUCTION_TEST
#undef WASM_SIMD_TEST_NO_LOWERING
#undef WASM_SIMD_ANYTRUE_TEST
#undef WASM_SIMD_ALLTRUE_TEST

}  // namespace test_run_wasm_simd
}  // namespace wasm
}  // namespace internal
}  // namespace v8