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      1 // Copyright 2015 the V8 project authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "src/runtime/runtime-utils.h"
      6 
      7 #include "src/arguments.h"
      8 #include "src/base/macros.h"
      9 #include "src/conversions.h"
     10 #include "src/factory.h"
     11 #include "src/objects-inl.h"
     12 
     13 // Implement Single Instruction Multiple Data (SIMD) operations as defined in
     14 // the SIMD.js draft spec:
     15 // http://littledan.github.io/simd.html
     16 
     17 namespace v8 {
     18 namespace internal {
     19 
     20 namespace {
     21 
     22 // Functions to convert Numbers to SIMD component types.
     23 
     24 template <typename T, typename F>
     25 static bool CanCast(F from) {
     26   // A float can't represent 2^31 - 1 or 2^32 - 1 exactly, so promote the limits
     27   // to double. Otherwise, the limit is truncated and numbers like 2^31 or 2^32
     28   // get through, causing any static_cast to be undefined.
     29   return from >= static_cast<double>(std::numeric_limits<T>::min()) &&
     30          from <= static_cast<double>(std::numeric_limits<T>::max());
     31 }
     32 
     33 
     34 // Explicitly specialize for conversions to float, which always succeed.
     35 template <>
     36 bool CanCast<float>(int32_t from) {
     37   return true;
     38 }
     39 
     40 
     41 template <>
     42 bool CanCast<float>(uint32_t from) {
     43   return true;
     44 }
     45 
     46 
     47 template <typename T>
     48 static T ConvertNumber(double number);
     49 
     50 
     51 template <>
     52 float ConvertNumber<float>(double number) {
     53   return DoubleToFloat32(number);
     54 }
     55 
     56 
     57 template <>
     58 int32_t ConvertNumber<int32_t>(double number) {
     59   return DoubleToInt32(number);
     60 }
     61 
     62 
     63 template <>
     64 uint32_t ConvertNumber<uint32_t>(double number) {
     65   return DoubleToUint32(number);
     66 }
     67 
     68 
     69 template <>
     70 int16_t ConvertNumber<int16_t>(double number) {
     71   return static_cast<int16_t>(DoubleToInt32(number));
     72 }
     73 
     74 
     75 template <>
     76 uint16_t ConvertNumber<uint16_t>(double number) {
     77   return static_cast<uint16_t>(DoubleToUint32(number));
     78 }
     79 
     80 
     81 template <>
     82 int8_t ConvertNumber<int8_t>(double number) {
     83   return static_cast<int8_t>(DoubleToInt32(number));
     84 }
     85 
     86 
     87 template <>
     88 uint8_t ConvertNumber<uint8_t>(double number) {
     89   return static_cast<uint8_t>(DoubleToUint32(number));
     90 }
     91 
     92 
     93 // TODO(bbudge): Make this consistent with SIMD instruction results.
     94 inline float RecipApprox(float a) { return 1.0f / a; }
     95 
     96 
     97 // TODO(bbudge): Make this consistent with SIMD instruction results.
     98 inline float RecipSqrtApprox(float a) { return 1.0f / std::sqrt(a); }
     99 
    100 
    101 // Saturating addition for int16_t and int8_t.
    102 template <typename T>
    103 inline T AddSaturate(T a, T b) {
    104   const T max = std::numeric_limits<T>::max();
    105   const T min = std::numeric_limits<T>::min();
    106   int32_t result = a + b;
    107   if (result > max) return max;
    108   if (result < min) return min;
    109   return result;
    110 }
    111 
    112 
    113 // Saturating subtraction for int16_t and int8_t.
    114 template <typename T>
    115 inline T SubSaturate(T a, T b) {
    116   const T max = std::numeric_limits<T>::max();
    117   const T min = std::numeric_limits<T>::min();
    118   int32_t result = a - b;
    119   if (result > max) return max;
    120   if (result < min) return min;
    121   return result;
    122 }
    123 
    124 
    125 inline float Min(float a, float b) {
    126   if (a < b) return a;
    127   if (a > b) return b;
    128   if (a == b) return std::signbit(a) ? a : b;
    129   return std::numeric_limits<float>::quiet_NaN();
    130 }
    131 
    132 
    133 inline float Max(float a, float b) {
    134   if (a > b) return a;
    135   if (a < b) return b;
    136   if (a == b) return std::signbit(b) ? a : b;
    137   return std::numeric_limits<float>::quiet_NaN();
    138 }
    139 
    140 
    141 inline float MinNumber(float a, float b) {
    142   if (std::isnan(a)) return b;
    143   if (std::isnan(b)) return a;
    144   return Min(a, b);
    145 }
    146 
    147 
    148 inline float MaxNumber(float a, float b) {
    149   if (std::isnan(a)) return b;
    150   if (std::isnan(b)) return a;
    151   return Max(a, b);
    152 }
    153 
    154 }  // namespace
    155 
    156 //-------------------------------------------------------------------
    157 
    158 // SIMD helper functions.
    159 
    160 RUNTIME_FUNCTION(Runtime_IsSimdValue) {
    161   HandleScope scope(isolate);
    162   DCHECK(args.length() == 1);
    163   return isolate->heap()->ToBoolean(args[0]->IsSimd128Value());
    164 }
    165 
    166 
    167 RUNTIME_FUNCTION(Runtime_SimdSameValue) {
    168   HandleScope scope(isolate);
    169   DCHECK(args.length() == 2);
    170   CONVERT_ARG_HANDLE_CHECKED(Simd128Value, a, 0);
    171   bool result = false;
    172   // args[1] is of unknown type.
    173   if (args[1]->IsSimd128Value()) {
    174     Simd128Value* b = Simd128Value::cast(args[1]);
    175     if (a->map() == b->map()) {
    176       if (a->IsFloat32x4()) {
    177         result = Float32x4::cast(*a)->SameValue(Float32x4::cast(b));
    178       } else {
    179         result = a->BitwiseEquals(b);
    180       }
    181     }
    182   }
    183   return isolate->heap()->ToBoolean(result);
    184 }
    185 
    186 
    187 RUNTIME_FUNCTION(Runtime_SimdSameValueZero) {
    188   HandleScope scope(isolate);
    189   DCHECK(args.length() == 2);
    190   CONVERT_ARG_HANDLE_CHECKED(Simd128Value, a, 0);
    191   bool result = false;
    192   // args[1] is of unknown type.
    193   if (args[1]->IsSimd128Value()) {
    194     Simd128Value* b = Simd128Value::cast(args[1]);
    195     if (a->map() == b->map()) {
    196       if (a->IsFloat32x4()) {
    197         result = Float32x4::cast(*a)->SameValueZero(Float32x4::cast(b));
    198       } else {
    199         result = a->BitwiseEquals(b);
    200       }
    201     }
    202   }
    203   return isolate->heap()->ToBoolean(result);
    204 }
    205 
    206 
    207 //-------------------------------------------------------------------
    208 
    209 // Utility macros.
    210 
    211 #define CONVERT_SIMD_LANE_ARG_CHECKED(name, index, lanes) \
    212   CONVERT_INT32_ARG_CHECKED(name, index);                 \
    213   RUNTIME_ASSERT(name >= 0 && name < lanes);
    214 
    215 #define CONVERT_SIMD_ARG_HANDLE_THROW(Type, name, index)                \
    216   Handle<Type> name;                                                    \
    217   if (args[index]->Is##Type()) {                                        \
    218     name = args.at<Type>(index);                                        \
    219   } else {                                                              \
    220     THROW_NEW_ERROR_RETURN_FAILURE(                                     \
    221         isolate, NewTypeError(MessageTemplate::kInvalidSimdOperation)); \
    222   }
    223 
    224 #define SIMD_UNARY_OP(type, lane_type, lane_count, op, result) \
    225   static const int kLaneCount = lane_count;                    \
    226   DCHECK(args.length() == 1);                                  \
    227   CONVERT_SIMD_ARG_HANDLE_THROW(type, a, 0);                   \
    228   lane_type lanes[kLaneCount];                                 \
    229   for (int i = 0; i < kLaneCount; i++) {                       \
    230     lanes[i] = op(a->get_lane(i));                             \
    231   }                                                            \
    232   Handle<type> result = isolate->factory()->New##type(lanes);
    233 
    234 #define SIMD_BINARY_OP(type, lane_type, lane_count, op, result) \
    235   static const int kLaneCount = lane_count;                     \
    236   DCHECK(args.length() == 2);                                   \
    237   CONVERT_SIMD_ARG_HANDLE_THROW(type, a, 0);                    \
    238   CONVERT_SIMD_ARG_HANDLE_THROW(type, b, 1);                    \
    239   lane_type lanes[kLaneCount];                                  \
    240   for (int i = 0; i < kLaneCount; i++) {                        \
    241     lanes[i] = op(a->get_lane(i), b->get_lane(i));              \
    242   }                                                             \
    243   Handle<type> result = isolate->factory()->New##type(lanes);
    244 
    245 #define SIMD_RELATIONAL_OP(type, bool_type, lane_count, a, b, op, result) \
    246   static const int kLaneCount = lane_count;                               \
    247   DCHECK(args.length() == 2);                                             \
    248   CONVERT_SIMD_ARG_HANDLE_THROW(type, a, 0);                              \
    249   CONVERT_SIMD_ARG_HANDLE_THROW(type, b, 1);                              \
    250   bool lanes[kLaneCount];                                                 \
    251   for (int i = 0; i < kLaneCount; i++) {                                  \
    252     lanes[i] = a->get_lane(i) op b->get_lane(i);                          \
    253   }                                                                       \
    254   Handle<bool_type> result = isolate->factory()->New##bool_type(lanes);
    255 
    256 //-------------------------------------------------------------------
    257 
    258 // Common functions.
    259 
    260 #define GET_NUMERIC_ARG(lane_type, name, index) \
    261   CONVERT_NUMBER_ARG_HANDLE_CHECKED(a, index);  \
    262   name = ConvertNumber<lane_type>(a->Number());
    263 
    264 #define GET_BOOLEAN_ARG(lane_type, name, index) \
    265   name = args[index]->BooleanValue();
    266 
    267 #define SIMD_ALL_TYPES(FUNCTION)                              \
    268   FUNCTION(Float32x4, float, 4, NewNumber, GET_NUMERIC_ARG)   \
    269   FUNCTION(Int32x4, int32_t, 4, NewNumber, GET_NUMERIC_ARG)   \
    270   FUNCTION(Uint32x4, uint32_t, 4, NewNumber, GET_NUMERIC_ARG) \
    271   FUNCTION(Bool32x4, bool, 4, ToBoolean, GET_BOOLEAN_ARG)     \
    272   FUNCTION(Int16x8, int16_t, 8, NewNumber, GET_NUMERIC_ARG)   \
    273   FUNCTION(Uint16x8, uint16_t, 8, NewNumber, GET_NUMERIC_ARG) \
    274   FUNCTION(Bool16x8, bool, 8, ToBoolean, GET_BOOLEAN_ARG)     \
    275   FUNCTION(Int8x16, int8_t, 16, NewNumber, GET_NUMERIC_ARG)   \
    276   FUNCTION(Uint8x16, uint8_t, 16, NewNumber, GET_NUMERIC_ARG) \
    277   FUNCTION(Bool8x16, bool, 16, ToBoolean, GET_BOOLEAN_ARG)
    278 
    279 #define SIMD_CREATE_FUNCTION(type, lane_type, lane_count, extract, replace) \
    280   RUNTIME_FUNCTION(Runtime_Create##type) {                                  \
    281     static const int kLaneCount = lane_count;                               \
    282     HandleScope scope(isolate);                                             \
    283     DCHECK(args.length() == kLaneCount);                                    \
    284     lane_type lanes[kLaneCount];                                            \
    285     for (int i = 0; i < kLaneCount; i++) {                                  \
    286       replace(lane_type, lanes[i], i)                                       \
    287     }                                                                       \
    288     return *isolate->factory()->New##type(lanes);                           \
    289   }
    290 
    291 #define SIMD_EXTRACT_FUNCTION(type, lane_type, lane_count, extract, replace) \
    292   RUNTIME_FUNCTION(Runtime_##type##ExtractLane) {                            \
    293     HandleScope scope(isolate);                                              \
    294     DCHECK(args.length() == 2);                                              \
    295     CONVERT_SIMD_ARG_HANDLE_THROW(type, a, 0);                               \
    296     CONVERT_SIMD_LANE_ARG_CHECKED(lane, 1, lane_count);                      \
    297     return *isolate->factory()->extract(a->get_lane(lane));                  \
    298   }
    299 
    300 #define SIMD_REPLACE_FUNCTION(type, lane_type, lane_count, extract, replace) \
    301   RUNTIME_FUNCTION(Runtime_##type##ReplaceLane) {                            \
    302     static const int kLaneCount = lane_count;                                \
    303     HandleScope scope(isolate);                                              \
    304     DCHECK(args.length() == 3);                                              \
    305     CONVERT_SIMD_ARG_HANDLE_THROW(type, simd, 0);                            \
    306     CONVERT_SIMD_LANE_ARG_CHECKED(lane, 1, kLaneCount);                      \
    307     lane_type lanes[kLaneCount];                                             \
    308     for (int i = 0; i < kLaneCount; i++) {                                   \
    309       lanes[i] = simd->get_lane(i);                                          \
    310     }                                                                        \
    311     replace(lane_type, lanes[lane], 2);                                      \
    312     Handle<type> result = isolate->factory()->New##type(lanes);              \
    313     return *result;                                                          \
    314   }
    315 
    316 #define SIMD_CHECK_FUNCTION(type, lane_type, lane_count, extract, replace) \
    317   RUNTIME_FUNCTION(Runtime_##type##Check) {                                \
    318     HandleScope scope(isolate);                                            \
    319     CONVERT_SIMD_ARG_HANDLE_THROW(type, a, 0);                             \
    320     return *a;                                                             \
    321   }
    322 
    323 #define SIMD_SWIZZLE_FUNCTION(type, lane_type, lane_count, extract, replace) \
    324   RUNTIME_FUNCTION(Runtime_##type##Swizzle) {                                \
    325     static const int kLaneCount = lane_count;                                \
    326     HandleScope scope(isolate);                                              \
    327     DCHECK(args.length() == 1 + kLaneCount);                                 \
    328     CONVERT_SIMD_ARG_HANDLE_THROW(type, a, 0);                               \
    329     lane_type lanes[kLaneCount];                                             \
    330     for (int i = 0; i < kLaneCount; i++) {                                   \
    331       CONVERT_SIMD_LANE_ARG_CHECKED(index, i + 1, kLaneCount);               \
    332       lanes[i] = a->get_lane(index);                                         \
    333     }                                                                        \
    334     Handle<type> result = isolate->factory()->New##type(lanes);              \
    335     return *result;                                                          \
    336   }
    337 
    338 #define SIMD_SHUFFLE_FUNCTION(type, lane_type, lane_count, extract, replace) \
    339   RUNTIME_FUNCTION(Runtime_##type##Shuffle) {                                \
    340     static const int kLaneCount = lane_count;                                \
    341     HandleScope scope(isolate);                                              \
    342     DCHECK(args.length() == 2 + kLaneCount);                                 \
    343     CONVERT_SIMD_ARG_HANDLE_THROW(type, a, 0);                               \
    344     CONVERT_SIMD_ARG_HANDLE_THROW(type, b, 1);                               \
    345     lane_type lanes[kLaneCount];                                             \
    346     for (int i = 0; i < kLaneCount; i++) {                                   \
    347       CONVERT_SIMD_LANE_ARG_CHECKED(index, i + 2, kLaneCount * 2);           \
    348       lanes[i] = index < kLaneCount ? a->get_lane(index)                     \
    349                                     : b->get_lane(index - kLaneCount);       \
    350     }                                                                        \
    351     Handle<type> result = isolate->factory()->New##type(lanes);              \
    352     return *result;                                                          \
    353   }
    354 
    355 SIMD_ALL_TYPES(SIMD_CREATE_FUNCTION)
    356 SIMD_ALL_TYPES(SIMD_EXTRACT_FUNCTION)
    357 SIMD_ALL_TYPES(SIMD_REPLACE_FUNCTION)
    358 SIMD_ALL_TYPES(SIMD_CHECK_FUNCTION)
    359 SIMD_ALL_TYPES(SIMD_SWIZZLE_FUNCTION)
    360 SIMD_ALL_TYPES(SIMD_SHUFFLE_FUNCTION)
    361 
    362 //-------------------------------------------------------------------
    363 
    364 // Float-only functions.
    365 
    366 #define SIMD_ABS_FUNCTION(type, lane_type, lane_count)            \
    367   RUNTIME_FUNCTION(Runtime_##type##Abs) {                         \
    368     HandleScope scope(isolate);                                   \
    369     SIMD_UNARY_OP(type, lane_type, lane_count, std::abs, result); \
    370     return *result;                                               \
    371   }
    372 
    373 #define SIMD_SQRT_FUNCTION(type, lane_type, lane_count)            \
    374   RUNTIME_FUNCTION(Runtime_##type##Sqrt) {                         \
    375     HandleScope scope(isolate);                                    \
    376     SIMD_UNARY_OP(type, lane_type, lane_count, std::sqrt, result); \
    377     return *result;                                                \
    378   }
    379 
    380 #define SIMD_RECIP_APPROX_FUNCTION(type, lane_type, lane_count)      \
    381   RUNTIME_FUNCTION(Runtime_##type##RecipApprox) {                    \
    382     HandleScope scope(isolate);                                      \
    383     SIMD_UNARY_OP(type, lane_type, lane_count, RecipApprox, result); \
    384     return *result;                                                  \
    385   }
    386 
    387 #define SIMD_RECIP_SQRT_APPROX_FUNCTION(type, lane_type, lane_count)     \
    388   RUNTIME_FUNCTION(Runtime_##type##RecipSqrtApprox) {                    \
    389     HandleScope scope(isolate);                                          \
    390     SIMD_UNARY_OP(type, lane_type, lane_count, RecipSqrtApprox, result); \
    391     return *result;                                                      \
    392   }
    393 
    394 #define BINARY_DIV(a, b) (a) / (b)
    395 #define SIMD_DIV_FUNCTION(type, lane_type, lane_count)               \
    396   RUNTIME_FUNCTION(Runtime_##type##Div) {                            \
    397     HandleScope scope(isolate);                                      \
    398     SIMD_BINARY_OP(type, lane_type, lane_count, BINARY_DIV, result); \
    399     return *result;                                                  \
    400   }
    401 
    402 #define SIMD_MINNUM_FUNCTION(type, lane_type, lane_count)           \
    403   RUNTIME_FUNCTION(Runtime_##type##MinNum) {                        \
    404     HandleScope scope(isolate);                                     \
    405     SIMD_BINARY_OP(type, lane_type, lane_count, MinNumber, result); \
    406     return *result;                                                 \
    407   }
    408 
    409 #define SIMD_MAXNUM_FUNCTION(type, lane_type, lane_count)           \
    410   RUNTIME_FUNCTION(Runtime_##type##MaxNum) {                        \
    411     HandleScope scope(isolate);                                     \
    412     SIMD_BINARY_OP(type, lane_type, lane_count, MaxNumber, result); \
    413     return *result;                                                 \
    414   }
    415 
    416 SIMD_ABS_FUNCTION(Float32x4, float, 4)
    417 SIMD_SQRT_FUNCTION(Float32x4, float, 4)
    418 SIMD_RECIP_APPROX_FUNCTION(Float32x4, float, 4)
    419 SIMD_RECIP_SQRT_APPROX_FUNCTION(Float32x4, float, 4)
    420 SIMD_DIV_FUNCTION(Float32x4, float, 4)
    421 SIMD_MINNUM_FUNCTION(Float32x4, float, 4)
    422 SIMD_MAXNUM_FUNCTION(Float32x4, float, 4)
    423 
    424 //-------------------------------------------------------------------
    425 
    426 // Int-only functions.
    427 
    428 #define SIMD_INT_TYPES(FUNCTION)    \
    429   FUNCTION(Int32x4, int32_t, 32, 4) \
    430   FUNCTION(Int16x8, int16_t, 16, 8) \
    431   FUNCTION(Int8x16, int8_t, 8, 16)
    432 
    433 #define SIMD_UINT_TYPES(FUNCTION)     \
    434   FUNCTION(Uint32x4, uint32_t, 32, 4) \
    435   FUNCTION(Uint16x8, uint16_t, 16, 8) \
    436   FUNCTION(Uint8x16, uint8_t, 8, 16)
    437 
    438 #define CONVERT_SHIFT_ARG_CHECKED(name, index)         \
    439   RUNTIME_ASSERT(args[index]->IsNumber());             \
    440   int32_t signed_shift = 0;                            \
    441   RUNTIME_ASSERT(args[index]->ToInt32(&signed_shift)); \
    442   uint32_t name = bit_cast<uint32_t>(signed_shift);
    443 
    444 #define SIMD_LSL_FUNCTION(type, lane_type, lane_bits, lane_count) \
    445   RUNTIME_FUNCTION(Runtime_##type##ShiftLeftByScalar) {           \
    446     static const int kLaneCount = lane_count;                     \
    447     HandleScope scope(isolate);                                   \
    448     DCHECK(args.length() == 2);                                   \
    449     CONVERT_SIMD_ARG_HANDLE_THROW(type, a, 0);                    \
    450     CONVERT_SHIFT_ARG_CHECKED(shift, 1);                          \
    451     lane_type lanes[kLaneCount] = {0};                            \
    452     if (shift < lane_bits) {                                      \
    453       for (int i = 0; i < kLaneCount; i++) {                      \
    454         lanes[i] = a->get_lane(i) << shift;                       \
    455       }                                                           \
    456     }                                                             \
    457     Handle<type> result = isolate->factory()->New##type(lanes);   \
    458     return *result;                                               \
    459   }
    460 
    461 #define SIMD_LSR_FUNCTION(type, lane_type, lane_bits, lane_count) \
    462   RUNTIME_FUNCTION(Runtime_##type##ShiftRightByScalar) {          \
    463     static const int kLaneCount = lane_count;                     \
    464     HandleScope scope(isolate);                                   \
    465     DCHECK(args.length() == 2);                                   \
    466     CONVERT_SIMD_ARG_HANDLE_THROW(type, a, 0);                    \
    467     CONVERT_SHIFT_ARG_CHECKED(shift, 1);                          \
    468     lane_type lanes[kLaneCount] = {0};                            \
    469     if (shift < lane_bits) {                                      \
    470       for (int i = 0; i < kLaneCount; i++) {                      \
    471         lanes[i] = static_cast<lane_type>(                        \
    472             bit_cast<lane_type>(a->get_lane(i)) >> shift);        \
    473       }                                                           \
    474     }                                                             \
    475     Handle<type> result = isolate->factory()->New##type(lanes);   \
    476     return *result;                                               \
    477   }
    478 
    479 #define SIMD_ASR_FUNCTION(type, lane_type, lane_bits, lane_count)      \
    480   RUNTIME_FUNCTION(Runtime_##type##ShiftRightByScalar) {               \
    481     static const int kLaneCount = lane_count;                          \
    482     HandleScope scope(isolate);                                        \
    483     DCHECK(args.length() == 2);                                        \
    484     CONVERT_SIMD_ARG_HANDLE_THROW(type, a, 0);                         \
    485     CONVERT_SHIFT_ARG_CHECKED(shift, 1);                               \
    486     if (shift >= lane_bits) shift = lane_bits - 1;                     \
    487     lane_type lanes[kLaneCount];                                       \
    488     for (int i = 0; i < kLaneCount; i++) {                             \
    489       int64_t shifted = static_cast<int64_t>(a->get_lane(i)) >> shift; \
    490       lanes[i] = static_cast<lane_type>(shifted);                      \
    491     }                                                                  \
    492     Handle<type> result = isolate->factory()->New##type(lanes);        \
    493     return *result;                                                    \
    494   }
    495 
    496 SIMD_INT_TYPES(SIMD_LSL_FUNCTION)
    497 SIMD_UINT_TYPES(SIMD_LSL_FUNCTION)
    498 SIMD_INT_TYPES(SIMD_ASR_FUNCTION)
    499 SIMD_UINT_TYPES(SIMD_LSR_FUNCTION)
    500 
    501 //-------------------------------------------------------------------
    502 
    503 // Bool-only functions.
    504 
    505 #define SIMD_BOOL_TYPES(FUNCTION) \
    506   FUNCTION(Bool32x4, 4)           \
    507   FUNCTION(Bool16x8, 8)           \
    508   FUNCTION(Bool8x16, 16)
    509 
    510 #define SIMD_ANY_FUNCTION(type, lane_count)    \
    511   RUNTIME_FUNCTION(Runtime_##type##AnyTrue) {  \
    512     HandleScope scope(isolate);                \
    513     DCHECK(args.length() == 1);                \
    514     CONVERT_SIMD_ARG_HANDLE_THROW(type, a, 0); \
    515     bool result = false;                       \
    516     for (int i = 0; i < lane_count; i++) {     \
    517       if (a->get_lane(i)) {                    \
    518         result = true;                         \
    519         break;                                 \
    520       }                                        \
    521     }                                          \
    522     return isolate->heap()->ToBoolean(result); \
    523   }
    524 
    525 #define SIMD_ALL_FUNCTION(type, lane_count)    \
    526   RUNTIME_FUNCTION(Runtime_##type##AllTrue) {  \
    527     HandleScope scope(isolate);                \
    528     DCHECK(args.length() == 1);                \
    529     CONVERT_SIMD_ARG_HANDLE_THROW(type, a, 0); \
    530     bool result = true;                        \
    531     for (int i = 0; i < lane_count; i++) {     \
    532       if (!a->get_lane(i)) {                   \
    533         result = false;                        \
    534         break;                                 \
    535       }                                        \
    536     }                                          \
    537     return isolate->heap()->ToBoolean(result); \
    538   }
    539 
    540 SIMD_BOOL_TYPES(SIMD_ANY_FUNCTION)
    541 SIMD_BOOL_TYPES(SIMD_ALL_FUNCTION)
    542 
    543 //-------------------------------------------------------------------
    544 
    545 // Small Int-only functions.
    546 
    547 #define SIMD_SMALL_INT_TYPES(FUNCTION) \
    548   FUNCTION(Int16x8, int16_t, 8)        \
    549   FUNCTION(Uint16x8, uint16_t, 8)      \
    550   FUNCTION(Int8x16, int8_t, 16)        \
    551   FUNCTION(Uint8x16, uint8_t, 16)
    552 
    553 #define SIMD_ADD_SATURATE_FUNCTION(type, lane_type, lane_count)       \
    554   RUNTIME_FUNCTION(Runtime_##type##AddSaturate) {                     \
    555     HandleScope scope(isolate);                                       \
    556     SIMD_BINARY_OP(type, lane_type, lane_count, AddSaturate, result); \
    557     return *result;                                                   \
    558   }
    559 
    560 #define BINARY_SUB(a, b) (a) - (b)
    561 #define SIMD_SUB_SATURATE_FUNCTION(type, lane_type, lane_count)       \
    562   RUNTIME_FUNCTION(Runtime_##type##SubSaturate) {                     \
    563     HandleScope scope(isolate);                                       \
    564     SIMD_BINARY_OP(type, lane_type, lane_count, SubSaturate, result); \
    565     return *result;                                                   \
    566   }
    567 
    568 SIMD_SMALL_INT_TYPES(SIMD_ADD_SATURATE_FUNCTION)
    569 SIMD_SMALL_INT_TYPES(SIMD_SUB_SATURATE_FUNCTION)
    570 
    571 //-------------------------------------------------------------------
    572 
    573 // Numeric functions.
    574 
    575 #define SIMD_NUMERIC_TYPES(FUNCTION) \
    576   FUNCTION(Float32x4, float, 4)      \
    577   FUNCTION(Int32x4, int32_t, 4)      \
    578   FUNCTION(Uint32x4, uint32_t, 4)    \
    579   FUNCTION(Int16x8, int16_t, 8)      \
    580   FUNCTION(Uint16x8, uint16_t, 8)    \
    581   FUNCTION(Int8x16, int8_t, 16)      \
    582   FUNCTION(Uint8x16, uint8_t, 16)
    583 
    584 #define BINARY_ADD(a, b) (a) + (b)
    585 #define SIMD_ADD_FUNCTION(type, lane_type, lane_count)               \
    586   RUNTIME_FUNCTION(Runtime_##type##Add) {                            \
    587     HandleScope scope(isolate);                                      \
    588     SIMD_BINARY_OP(type, lane_type, lane_count, BINARY_ADD, result); \
    589     return *result;                                                  \
    590   }
    591 
    592 #define BINARY_SUB(a, b) (a) - (b)
    593 #define SIMD_SUB_FUNCTION(type, lane_type, lane_count)               \
    594   RUNTIME_FUNCTION(Runtime_##type##Sub) {                            \
    595     HandleScope scope(isolate);                                      \
    596     SIMD_BINARY_OP(type, lane_type, lane_count, BINARY_SUB, result); \
    597     return *result;                                                  \
    598   }
    599 
    600 #define BINARY_MUL(a, b) (a) * (b)
    601 #define SIMD_MUL_FUNCTION(type, lane_type, lane_count)               \
    602   RUNTIME_FUNCTION(Runtime_##type##Mul) {                            \
    603     HandleScope scope(isolate);                                      \
    604     SIMD_BINARY_OP(type, lane_type, lane_count, BINARY_MUL, result); \
    605     return *result;                                                  \
    606   }
    607 
    608 #define SIMD_MIN_FUNCTION(type, lane_type, lane_count)        \
    609   RUNTIME_FUNCTION(Runtime_##type##Min) {                     \
    610     HandleScope scope(isolate);                               \
    611     SIMD_BINARY_OP(type, lane_type, lane_count, Min, result); \
    612     return *result;                                           \
    613   }
    614 
    615 #define SIMD_MAX_FUNCTION(type, lane_type, lane_count)        \
    616   RUNTIME_FUNCTION(Runtime_##type##Max) {                     \
    617     HandleScope scope(isolate);                               \
    618     SIMD_BINARY_OP(type, lane_type, lane_count, Max, result); \
    619     return *result;                                           \
    620   }
    621 
    622 SIMD_NUMERIC_TYPES(SIMD_ADD_FUNCTION)
    623 SIMD_NUMERIC_TYPES(SIMD_SUB_FUNCTION)
    624 SIMD_NUMERIC_TYPES(SIMD_MUL_FUNCTION)
    625 SIMD_NUMERIC_TYPES(SIMD_MIN_FUNCTION)
    626 SIMD_NUMERIC_TYPES(SIMD_MAX_FUNCTION)
    627 
    628 //-------------------------------------------------------------------
    629 
    630 // Relational functions.
    631 
    632 #define SIMD_RELATIONAL_TYPES(FUNCTION) \
    633   FUNCTION(Float32x4, Bool32x4, 4)      \
    634   FUNCTION(Int32x4, Bool32x4, 4)        \
    635   FUNCTION(Uint32x4, Bool32x4, 4)       \
    636   FUNCTION(Int16x8, Bool16x8, 8)        \
    637   FUNCTION(Uint16x8, Bool16x8, 8)       \
    638   FUNCTION(Int8x16, Bool8x16, 16)       \
    639   FUNCTION(Uint8x16, Bool8x16, 16)
    640 
    641 #define SIMD_EQUALITY_TYPES(FUNCTION) \
    642   SIMD_RELATIONAL_TYPES(FUNCTION)     \
    643   FUNCTION(Bool32x4, Bool32x4, 4)     \
    644   FUNCTION(Bool16x8, Bool16x8, 8)     \
    645   FUNCTION(Bool8x16, Bool8x16, 16)
    646 
    647 #define SIMD_EQUAL_FUNCTION(type, bool_type, lane_count)               \
    648   RUNTIME_FUNCTION(Runtime_##type##Equal) {                            \
    649     HandleScope scope(isolate);                                        \
    650     SIMD_RELATIONAL_OP(type, bool_type, lane_count, a, b, ==, result); \
    651     return *result;                                                    \
    652   }
    653 
    654 #define SIMD_NOT_EQUAL_FUNCTION(type, bool_type, lane_count)           \
    655   RUNTIME_FUNCTION(Runtime_##type##NotEqual) {                         \
    656     HandleScope scope(isolate);                                        \
    657     SIMD_RELATIONAL_OP(type, bool_type, lane_count, a, b, !=, result); \
    658     return *result;                                                    \
    659   }
    660 
    661 SIMD_EQUALITY_TYPES(SIMD_EQUAL_FUNCTION)
    662 SIMD_EQUALITY_TYPES(SIMD_NOT_EQUAL_FUNCTION)
    663 
    664 #define SIMD_LESS_THAN_FUNCTION(type, bool_type, lane_count)          \
    665   RUNTIME_FUNCTION(Runtime_##type##LessThan) {                        \
    666     HandleScope scope(isolate);                                       \
    667     SIMD_RELATIONAL_OP(type, bool_type, lane_count, a, b, <, result); \
    668     return *result;                                                   \
    669   }
    670 
    671 #define SIMD_LESS_THAN_OR_EQUAL_FUNCTION(type, bool_type, lane_count)  \
    672   RUNTIME_FUNCTION(Runtime_##type##LessThanOrEqual) {                  \
    673     HandleScope scope(isolate);                                        \
    674     SIMD_RELATIONAL_OP(type, bool_type, lane_count, a, b, <=, result); \
    675     return *result;                                                    \
    676   }
    677 
    678 #define SIMD_GREATER_THAN_FUNCTION(type, bool_type, lane_count)       \
    679   RUNTIME_FUNCTION(Runtime_##type##GreaterThan) {                     \
    680     HandleScope scope(isolate);                                       \
    681     SIMD_RELATIONAL_OP(type, bool_type, lane_count, a, b, >, result); \
    682     return *result;                                                   \
    683   }
    684 
    685 #define SIMD_GREATER_THAN_OR_EQUAL_FUNCTION(type, bool_type, lane_count) \
    686   RUNTIME_FUNCTION(Runtime_##type##GreaterThanOrEqual) {                 \
    687     HandleScope scope(isolate);                                          \
    688     SIMD_RELATIONAL_OP(type, bool_type, lane_count, a, b, >=, result);   \
    689     return *result;                                                      \
    690   }
    691 
    692 SIMD_RELATIONAL_TYPES(SIMD_LESS_THAN_FUNCTION)
    693 SIMD_RELATIONAL_TYPES(SIMD_LESS_THAN_OR_EQUAL_FUNCTION)
    694 SIMD_RELATIONAL_TYPES(SIMD_GREATER_THAN_FUNCTION)
    695 SIMD_RELATIONAL_TYPES(SIMD_GREATER_THAN_OR_EQUAL_FUNCTION)
    696 
    697 //-------------------------------------------------------------------
    698 
    699 // Logical functions.
    700 
    701 #define SIMD_LOGICAL_TYPES(FUNCTION)    \
    702   FUNCTION(Int32x4, int32_t, 4, _INT)   \
    703   FUNCTION(Uint32x4, uint32_t, 4, _INT) \
    704   FUNCTION(Int16x8, int16_t, 8, _INT)   \
    705   FUNCTION(Uint16x8, uint16_t, 8, _INT) \
    706   FUNCTION(Int8x16, int8_t, 16, _INT)   \
    707   FUNCTION(Uint8x16, uint8_t, 16, _INT) \
    708   FUNCTION(Bool32x4, bool, 4, _BOOL)    \
    709   FUNCTION(Bool16x8, bool, 8, _BOOL)    \
    710   FUNCTION(Bool8x16, bool, 16, _BOOL)
    711 
    712 #define BINARY_AND_INT(a, b) (a) & (b)
    713 #define BINARY_AND_BOOL(a, b) (a) && (b)
    714 #define SIMD_AND_FUNCTION(type, lane_type, lane_count, op)               \
    715   RUNTIME_FUNCTION(Runtime_##type##And) {                                \
    716     HandleScope scope(isolate);                                          \
    717     SIMD_BINARY_OP(type, lane_type, lane_count, BINARY_AND##op, result); \
    718     return *result;                                                      \
    719   }
    720 
    721 #define BINARY_OR_INT(a, b) (a) | (b)
    722 #define BINARY_OR_BOOL(a, b) (a) || (b)
    723 #define SIMD_OR_FUNCTION(type, lane_type, lane_count, op)               \
    724   RUNTIME_FUNCTION(Runtime_##type##Or) {                                \
    725     HandleScope scope(isolate);                                         \
    726     SIMD_BINARY_OP(type, lane_type, lane_count, BINARY_OR##op, result); \
    727     return *result;                                                     \
    728   }
    729 
    730 #define BINARY_XOR_INT(a, b) (a) ^ (b)
    731 #define BINARY_XOR_BOOL(a, b) (a) != (b)
    732 #define SIMD_XOR_FUNCTION(type, lane_type, lane_count, op)               \
    733   RUNTIME_FUNCTION(Runtime_##type##Xor) {                                \
    734     HandleScope scope(isolate);                                          \
    735     SIMD_BINARY_OP(type, lane_type, lane_count, BINARY_XOR##op, result); \
    736     return *result;                                                      \
    737   }
    738 
    739 #define UNARY_NOT_INT ~
    740 #define UNARY_NOT_BOOL !
    741 #define SIMD_NOT_FUNCTION(type, lane_type, lane_count, op)             \
    742   RUNTIME_FUNCTION(Runtime_##type##Not) {                              \
    743     HandleScope scope(isolate);                                        \
    744     SIMD_UNARY_OP(type, lane_type, lane_count, UNARY_NOT##op, result); \
    745     return *result;                                                    \
    746   }
    747 
    748 SIMD_LOGICAL_TYPES(SIMD_AND_FUNCTION)
    749 SIMD_LOGICAL_TYPES(SIMD_OR_FUNCTION)
    750 SIMD_LOGICAL_TYPES(SIMD_XOR_FUNCTION)
    751 SIMD_LOGICAL_TYPES(SIMD_NOT_FUNCTION)
    752 
    753 //-------------------------------------------------------------------
    754 
    755 // Select functions.
    756 
    757 #define SIMD_SELECT_TYPES(FUNCTION)         \
    758   FUNCTION(Float32x4, float, Bool32x4, 4)   \
    759   FUNCTION(Int32x4, int32_t, Bool32x4, 4)   \
    760   FUNCTION(Uint32x4, uint32_t, Bool32x4, 4) \
    761   FUNCTION(Int16x8, int16_t, Bool16x8, 8)   \
    762   FUNCTION(Uint16x8, uint16_t, Bool16x8, 8) \
    763   FUNCTION(Int8x16, int8_t, Bool8x16, 16)   \
    764   FUNCTION(Uint8x16, uint8_t, Bool8x16, 16)
    765 
    766 #define SIMD_SELECT_FUNCTION(type, lane_type, bool_type, lane_count)  \
    767   RUNTIME_FUNCTION(Runtime_##type##Select) {                          \
    768     static const int kLaneCount = lane_count;                         \
    769     HandleScope scope(isolate);                                       \
    770     DCHECK(args.length() == 3);                                       \
    771     CONVERT_SIMD_ARG_HANDLE_THROW(bool_type, mask, 0);                \
    772     CONVERT_SIMD_ARG_HANDLE_THROW(type, a, 1);                        \
    773     CONVERT_SIMD_ARG_HANDLE_THROW(type, b, 2);                        \
    774     lane_type lanes[kLaneCount];                                      \
    775     for (int i = 0; i < kLaneCount; i++) {                            \
    776       lanes[i] = mask->get_lane(i) ? a->get_lane(i) : b->get_lane(i); \
    777     }                                                                 \
    778     Handle<type> result = isolate->factory()->New##type(lanes);       \
    779     return *result;                                                   \
    780   }
    781 
    782 SIMD_SELECT_TYPES(SIMD_SELECT_FUNCTION)
    783 
    784 //-------------------------------------------------------------------
    785 
    786 // Signed / unsigned functions.
    787 
    788 #define SIMD_SIGNED_TYPES(FUNCTION) \
    789   FUNCTION(Float32x4, float, 4)     \
    790   FUNCTION(Int32x4, int32_t, 4)     \
    791   FUNCTION(Int16x8, int16_t, 8)     \
    792   FUNCTION(Int8x16, int8_t, 16)
    793 
    794 #define SIMD_NEG_FUNCTION(type, lane_type, lane_count)     \
    795   RUNTIME_FUNCTION(Runtime_##type##Neg) {                  \
    796     HandleScope scope(isolate);                            \
    797     SIMD_UNARY_OP(type, lane_type, lane_count, -, result); \
    798     return *result;                                        \
    799   }
    800 
    801 SIMD_SIGNED_TYPES(SIMD_NEG_FUNCTION)
    802 
    803 //-------------------------------------------------------------------
    804 
    805 // Casting functions.
    806 
    807 #define SIMD_FROM_TYPES(FUNCTION)                   \
    808   FUNCTION(Float32x4, float, 4, Int32x4, int32_t)   \
    809   FUNCTION(Float32x4, float, 4, Uint32x4, uint32_t) \
    810   FUNCTION(Int32x4, int32_t, 4, Float32x4, float)   \
    811   FUNCTION(Int32x4, int32_t, 4, Uint32x4, uint32_t) \
    812   FUNCTION(Uint32x4, uint32_t, 4, Float32x4, float) \
    813   FUNCTION(Uint32x4, uint32_t, 4, Int32x4, int32_t) \
    814   FUNCTION(Int16x8, int16_t, 8, Uint16x8, uint16_t) \
    815   FUNCTION(Uint16x8, uint16_t, 8, Int16x8, int16_t) \
    816   FUNCTION(Int8x16, int8_t, 16, Uint8x16, uint8_t)  \
    817   FUNCTION(Uint8x16, uint8_t, 16, Int8x16, int8_t)
    818 
    819 #define SIMD_FROM_FUNCTION(type, lane_type, lane_count, from_type, from_ctype) \
    820   RUNTIME_FUNCTION(Runtime_##type##From##from_type) {                          \
    821     static const int kLaneCount = lane_count;                                  \
    822     HandleScope scope(isolate);                                                \
    823     DCHECK(args.length() == 1);                                                \
    824     CONVERT_SIMD_ARG_HANDLE_THROW(from_type, a, 0);                            \
    825     lane_type lanes[kLaneCount];                                               \
    826     for (int i = 0; i < kLaneCount; i++) {                                     \
    827       from_ctype a_value = a->get_lane(i);                                     \
    828       if (a_value != a_value) a_value = 0;                                     \
    829       RUNTIME_ASSERT(CanCast<lane_type>(a_value));                             \
    830       lanes[i] = static_cast<lane_type>(a_value);                              \
    831     }                                                                          \
    832     Handle<type> result = isolate->factory()->New##type(lanes);                \
    833     return *result;                                                            \
    834   }
    835 
    836 SIMD_FROM_TYPES(SIMD_FROM_FUNCTION)
    837 
    838 #define SIMD_FROM_BITS_TYPES(FUNCTION)       \
    839   FUNCTION(Float32x4, float, 4, Int32x4)     \
    840   FUNCTION(Float32x4, float, 4, Uint32x4)    \
    841   FUNCTION(Float32x4, float, 4, Int16x8)     \
    842   FUNCTION(Float32x4, float, 4, Uint16x8)    \
    843   FUNCTION(Float32x4, float, 4, Int8x16)     \
    844   FUNCTION(Float32x4, float, 4, Uint8x16)    \
    845   FUNCTION(Int32x4, int32_t, 4, Float32x4)   \
    846   FUNCTION(Int32x4, int32_t, 4, Uint32x4)    \
    847   FUNCTION(Int32x4, int32_t, 4, Int16x8)     \
    848   FUNCTION(Int32x4, int32_t, 4, Uint16x8)    \
    849   FUNCTION(Int32x4, int32_t, 4, Int8x16)     \
    850   FUNCTION(Int32x4, int32_t, 4, Uint8x16)    \
    851   FUNCTION(Uint32x4, uint32_t, 4, Float32x4) \
    852   FUNCTION(Uint32x4, uint32_t, 4, Int32x4)   \
    853   FUNCTION(Uint32x4, uint32_t, 4, Int16x8)   \
    854   FUNCTION(Uint32x4, uint32_t, 4, Uint16x8)  \
    855   FUNCTION(Uint32x4, uint32_t, 4, Int8x16)   \
    856   FUNCTION(Uint32x4, uint32_t, 4, Uint8x16)  \
    857   FUNCTION(Int16x8, int16_t, 8, Float32x4)   \
    858   FUNCTION(Int16x8, int16_t, 8, Int32x4)     \
    859   FUNCTION(Int16x8, int16_t, 8, Uint32x4)    \
    860   FUNCTION(Int16x8, int16_t, 8, Uint16x8)    \
    861   FUNCTION(Int16x8, int16_t, 8, Int8x16)     \
    862   FUNCTION(Int16x8, int16_t, 8, Uint8x16)    \
    863   FUNCTION(Uint16x8, uint16_t, 8, Float32x4) \
    864   FUNCTION(Uint16x8, uint16_t, 8, Int32x4)   \
    865   FUNCTION(Uint16x8, uint16_t, 8, Uint32x4)  \
    866   FUNCTION(Uint16x8, uint16_t, 8, Int16x8)   \
    867   FUNCTION(Uint16x8, uint16_t, 8, Int8x16)   \
    868   FUNCTION(Uint16x8, uint16_t, 8, Uint8x16)  \
    869   FUNCTION(Int8x16, int8_t, 16, Float32x4)   \
    870   FUNCTION(Int8x16, int8_t, 16, Int32x4)     \
    871   FUNCTION(Int8x16, int8_t, 16, Uint32x4)    \
    872   FUNCTION(Int8x16, int8_t, 16, Int16x8)     \
    873   FUNCTION(Int8x16, int8_t, 16, Uint16x8)    \
    874   FUNCTION(Int8x16, int8_t, 16, Uint8x16)    \
    875   FUNCTION(Uint8x16, uint8_t, 16, Float32x4) \
    876   FUNCTION(Uint8x16, uint8_t, 16, Int32x4)   \
    877   FUNCTION(Uint8x16, uint8_t, 16, Uint32x4)  \
    878   FUNCTION(Uint8x16, uint8_t, 16, Int16x8)   \
    879   FUNCTION(Uint8x16, uint8_t, 16, Uint16x8)  \
    880   FUNCTION(Uint8x16, uint8_t, 16, Int8x16)
    881 
    882 #define SIMD_FROM_BITS_FUNCTION(type, lane_type, lane_count, from_type) \
    883   RUNTIME_FUNCTION(Runtime_##type##From##from_type##Bits) {             \
    884     static const int kLaneCount = lane_count;                           \
    885     HandleScope scope(isolate);                                         \
    886     DCHECK(args.length() == 1);                                         \
    887     CONVERT_SIMD_ARG_HANDLE_THROW(from_type, a, 0);                     \
    888     lane_type lanes[kLaneCount];                                        \
    889     a->CopyBits(lanes);                                                 \
    890     Handle<type> result = isolate->factory()->New##type(lanes);         \
    891     return *result;                                                     \
    892   }
    893 
    894 SIMD_FROM_BITS_TYPES(SIMD_FROM_BITS_FUNCTION)
    895 
    896 
    897 //-------------------------------------------------------------------
    898 
    899 // Load and Store functions.
    900 
    901 #define SIMD_LOADN_STOREN_TYPES(FUNCTION) \
    902   FUNCTION(Float32x4, float, 4)           \
    903   FUNCTION(Int32x4, int32_t, 4)           \
    904   FUNCTION(Uint32x4, uint32_t, 4)
    905 
    906 
    907 // Common Load and Store Functions
    908 
    909 #define SIMD_LOAD(type, lane_type, lane_count, count, result)          \
    910   static const int kLaneCount = lane_count;                            \
    911   DCHECK(args.length() == 2);                                          \
    912   CONVERT_SIMD_ARG_HANDLE_THROW(JSTypedArray, tarray, 0);              \
    913   CONVERT_INT32_ARG_CHECKED(index, 1)                                  \
    914   size_t bpe = tarray->element_size();                                 \
    915   uint32_t bytes = count * sizeof(lane_type);                          \
    916   size_t byte_length = NumberToSize(isolate, tarray->byte_length());   \
    917   RUNTIME_ASSERT(index >= 0 && index * bpe + bytes <= byte_length);    \
    918   size_t tarray_offset = NumberToSize(isolate, tarray->byte_offset()); \
    919   uint8_t* tarray_base =                                               \
    920       static_cast<uint8_t*>(tarray->GetBuffer()->backing_store()) +    \
    921       tarray_offset;                                                   \
    922   lane_type lanes[kLaneCount] = {0};                                   \
    923   memcpy(lanes, tarray_base + index * bpe, bytes);                     \
    924   Handle<type> result = isolate->factory()->New##type(lanes);
    925 
    926 
    927 #define SIMD_STORE(type, lane_type, lane_count, count, a)              \
    928   static const int kLaneCount = lane_count;                            \
    929   DCHECK(args.length() == 3);                                          \
    930   CONVERT_SIMD_ARG_HANDLE_THROW(JSTypedArray, tarray, 0);              \
    931   CONVERT_SIMD_ARG_HANDLE_THROW(type, a, 2);                           \
    932   CONVERT_INT32_ARG_CHECKED(index, 1)                                  \
    933   size_t bpe = tarray->element_size();                                 \
    934   uint32_t bytes = count * sizeof(lane_type);                          \
    935   size_t byte_length = NumberToSize(isolate, tarray->byte_length());   \
    936   RUNTIME_ASSERT(index >= 0 && index * bpe + bytes <= byte_length);    \
    937   size_t tarray_offset = NumberToSize(isolate, tarray->byte_offset()); \
    938   uint8_t* tarray_base =                                               \
    939       static_cast<uint8_t*>(tarray->GetBuffer()->backing_store()) +    \
    940       tarray_offset;                                                   \
    941   lane_type lanes[kLaneCount];                                         \
    942   for (int i = 0; i < kLaneCount; i++) {                               \
    943     lanes[i] = a->get_lane(i);                                         \
    944   }                                                                    \
    945   memcpy(tarray_base + index * bpe, lanes, bytes);
    946 
    947 
    948 #define SIMD_LOAD_FUNCTION(type, lane_type, lane_count)         \
    949   RUNTIME_FUNCTION(Runtime_##type##Load) {                      \
    950     HandleScope scope(isolate);                                 \
    951     SIMD_LOAD(type, lane_type, lane_count, lane_count, result); \
    952     return *result;                                             \
    953   }
    954 
    955 
    956 #define SIMD_LOAD1_FUNCTION(type, lane_type, lane_count) \
    957   RUNTIME_FUNCTION(Runtime_##type##Load1) {              \
    958     HandleScope scope(isolate);                          \
    959     SIMD_LOAD(type, lane_type, lane_count, 1, result);   \
    960     return *result;                                      \
    961   }
    962 
    963 
    964 #define SIMD_LOAD2_FUNCTION(type, lane_type, lane_count) \
    965   RUNTIME_FUNCTION(Runtime_##type##Load2) {              \
    966     HandleScope scope(isolate);                          \
    967     SIMD_LOAD(type, lane_type, lane_count, 2, result);   \
    968     return *result;                                      \
    969   }
    970 
    971 
    972 #define SIMD_LOAD3_FUNCTION(type, lane_type, lane_count) \
    973   RUNTIME_FUNCTION(Runtime_##type##Load3) {              \
    974     HandleScope scope(isolate);                          \
    975     SIMD_LOAD(type, lane_type, lane_count, 3, result);   \
    976     return *result;                                      \
    977   }
    978 
    979 
    980 #define SIMD_STORE_FUNCTION(type, lane_type, lane_count)    \
    981   RUNTIME_FUNCTION(Runtime_##type##Store) {                 \
    982     HandleScope scope(isolate);                             \
    983     SIMD_STORE(type, lane_type, lane_count, lane_count, a); \
    984     return *a;                                              \
    985   }
    986 
    987 
    988 #define SIMD_STORE1_FUNCTION(type, lane_type, lane_count) \
    989   RUNTIME_FUNCTION(Runtime_##type##Store1) {              \
    990     HandleScope scope(isolate);                           \
    991     SIMD_STORE(type, lane_type, lane_count, 1, a);        \
    992     return *a;                                            \
    993   }
    994 
    995 
    996 #define SIMD_STORE2_FUNCTION(type, lane_type, lane_count) \
    997   RUNTIME_FUNCTION(Runtime_##type##Store2) {              \
    998     HandleScope scope(isolate);                           \
    999     SIMD_STORE(type, lane_type, lane_count, 2, a);        \
   1000     return *a;                                            \
   1001   }
   1002 
   1003 
   1004 #define SIMD_STORE3_FUNCTION(type, lane_type, lane_count) \
   1005   RUNTIME_FUNCTION(Runtime_##type##Store3) {              \
   1006     HandleScope scope(isolate);                           \
   1007     SIMD_STORE(type, lane_type, lane_count, 3, a);        \
   1008     return *a;                                            \
   1009   }
   1010 
   1011 
   1012 SIMD_NUMERIC_TYPES(SIMD_LOAD_FUNCTION)
   1013 SIMD_LOADN_STOREN_TYPES(SIMD_LOAD1_FUNCTION)
   1014 SIMD_LOADN_STOREN_TYPES(SIMD_LOAD2_FUNCTION)
   1015 SIMD_LOADN_STOREN_TYPES(SIMD_LOAD3_FUNCTION)
   1016 SIMD_NUMERIC_TYPES(SIMD_STORE_FUNCTION)
   1017 SIMD_LOADN_STOREN_TYPES(SIMD_STORE1_FUNCTION)
   1018 SIMD_LOADN_STOREN_TYPES(SIMD_STORE2_FUNCTION)
   1019 SIMD_LOADN_STOREN_TYPES(SIMD_STORE3_FUNCTION)
   1020 
   1021 //-------------------------------------------------------------------
   1022 
   1023 }  // namespace internal
   1024 }  // namespace v8
   1025