Revert of Remove SIMD.js from V8.

src/objects-printer.cc

Index: src/objects-printer.cc
diff --git a/src/objects-printer.cc b/src/objects-printer.cc
index 7272ee54ac262d7bdbbd479dd7e1b1f121d13f48..928cc06990da68e1e8f62a571d5bd196d6dad184 100644
--- a/src/objects-printer.cc
+++ b/src/objects-printer.cc
@@ -73,6 +73,9 @@
       os << "<mutable ";
       HeapNumber::cast(this)->HeapNumberPrint(os);
       os << ">\n";
+      break;
+    case SIMD128_VALUE_TYPE:
+      Simd128Value::cast(this)->Simd128ValuePrint(os);
       break;
     case FIXED_DOUBLE_ARRAY_TYPE:
       FixedDoubleArray::cast(this)->FixedDoubleArrayPrint(os);
@@ -249,6 +252,59 @@
       break;
   }
 }
+
+
+void Simd128Value::Simd128ValuePrint(std::ostream& os) {  // NOLINT
+#define PRINT_SIMD128_VALUE(TYPE, Type, type, lane_count, lane_type) \
+  if (Is##Type()) return Type::cast(this)->Type##Print(os);
+  SIMD128_TYPES(PRINT_SIMD128_VALUE)
+#undef PRINT_SIMD128_VALUE
+  UNREACHABLE();
+}
+
+
+void Float32x4::Float32x4Print(std::ostream& os) {  // NOLINT
+  char arr[100];
+  Vector<char> buffer(arr, arraysize(arr));
+  os << std::string(DoubleToCString(get_lane(0), buffer)) << ", "
+     << std::string(DoubleToCString(get_lane(1), buffer)) << ", "
+     << std::string(DoubleToCString(get_lane(2), buffer)) << ", "
+     << std::string(DoubleToCString(get_lane(3), buffer));
+}
+
+
+#define SIMD128_INT_PRINT_FUNCTION(type, lane_count)                \
+  void type::type##Print(std::ostream& os) {                        \
+    char arr[100];                                                  \
+    Vector<char> buffer(arr, arraysize(arr));                       \
+    os << std::string(IntToCString(get_lane(0), buffer));           \
+    for (int i = 1; i < lane_count; i++) {                          \
+      os << ", " << std::string(IntToCString(get_lane(i), buffer)); \
+    }                                                               \
+  }
+SIMD128_INT_PRINT_FUNCTION(Int32x4, 4)
+SIMD128_INT_PRINT_FUNCTION(Uint32x4, 4)
+SIMD128_INT_PRINT_FUNCTION(Int16x8, 8)
+SIMD128_INT_PRINT_FUNCTION(Uint16x8, 8)
+SIMD128_INT_PRINT_FUNCTION(Int8x16, 16)
+SIMD128_INT_PRINT_FUNCTION(Uint8x16, 16)
+#undef SIMD128_INT_PRINT_FUNCTION
+
+
+#define SIMD128_BOOL_PRINT_FUNCTION(type, lane_count)            \
+  void type::type##Print(std::ostream& os) {                     \
+    char arr[100];                                               \
+    Vector<char> buffer(arr, arraysize(arr));                    \
+    os << std::string(get_lane(0) ? "true" : "false");           \
+    for (int i = 1; i < lane_count; i++) {                       \
+      os << ", " << std::string(get_lane(i) ? "true" : "false"); \
+    }                                                            \
+  }
+SIMD128_BOOL_PRINT_FUNCTION(Bool32x4, 4)
+SIMD128_BOOL_PRINT_FUNCTION(Bool16x8, 8)
+SIMD128_BOOL_PRINT_FUNCTION(Bool8x16, 16)
+#undef SIMD128_BOOL_PRINT_FUNCTION
+
 
 void ByteArray::ByteArrayPrint(std::ostream& os) {  // NOLINT
   os << "byte array, data starts at " << GetDataStartAddress();