Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1 | // Copyright 2011 the V8 project authors. All rights reserved. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5 | #include "src/utils.h" |
| 6 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 7 | #include <stdarg.h> |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 8 | #include <sys/stat.h> |
| 9 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 10 | #include "src/base/functional.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 11 | #include "src/base/logging.h" |
| 12 | #include "src/base/platform/platform.h" |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 13 | |
| 14 | namespace v8 { |
| 15 | namespace internal { |
| 16 | |
| 17 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 18 | SimpleStringBuilder::SimpleStringBuilder(int size) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 19 | buffer_ = Vector<char>::New(size); |
| 20 | position_ = 0; |
| 21 | } |
| 22 | |
| 23 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 24 | void SimpleStringBuilder::AddString(const char* s) { |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 25 | AddSubstring(s, StrLength(s)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 26 | } |
| 27 | |
| 28 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 29 | void SimpleStringBuilder::AddSubstring(const char* s, int n) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 30 | DCHECK(!is_finalized() && position_ + n <= buffer_.length()); |
| 31 | DCHECK(static_cast<size_t>(n) <= strlen(s)); |
| 32 | MemCopy(&buffer_[position_], s, n * kCharSize); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 33 | position_ += n; |
| 34 | } |
| 35 | |
| 36 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 37 | void SimpleStringBuilder::AddPadding(char c, int count) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 38 | for (int i = 0; i < count; i++) { |
| 39 | AddCharacter(c); |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 44 | void SimpleStringBuilder::AddDecimalInteger(int32_t value) { |
| 45 | uint32_t number = static_cast<uint32_t>(value); |
| 46 | if (value < 0) { |
| 47 | AddCharacter('-'); |
| 48 | number = static_cast<uint32_t>(-value); |
| 49 | } |
| 50 | int digits = 1; |
| 51 | for (uint32_t factor = 10; digits < 10; digits++, factor *= 10) { |
| 52 | if (factor > number) break; |
| 53 | } |
| 54 | position_ += digits; |
| 55 | for (int i = 1; i <= digits; i++) { |
| 56 | buffer_[position_ - i] = '0' + static_cast<char>(number % 10); |
| 57 | number /= 10; |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | |
| 62 | char* SimpleStringBuilder::Finalize() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 63 | DCHECK(!is_finalized() && position_ <= buffer_.length()); |
| 64 | // If there is no space for null termination, overwrite last character. |
| 65 | if (position_ == buffer_.length()) { |
| 66 | position_--; |
| 67 | // Print ellipsis. |
| 68 | for (int i = 3; i > 0 && position_ > i; --i) buffer_[position_ - i] = '.'; |
| 69 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 70 | buffer_[position_] = '\0'; |
| 71 | // Make sure nobody managed to add a 0-character to the |
| 72 | // buffer while building the string. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 73 | DCHECK(strlen(buffer_.start()) == static_cast<size_t>(position_)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 74 | position_ = -1; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 75 | DCHECK(is_finalized()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 76 | return buffer_.start(); |
| 77 | } |
| 78 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 79 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 80 | std::ostream& operator<<(std::ostream& os, FeedbackVectorSlot slot) { |
| 81 | return os << "#" << slot.id_; |
| 82 | } |
| 83 | |
| 84 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 85 | size_t hash_value(BailoutId id) { |
| 86 | base::hash<int> h; |
| 87 | return h(id.id_); |
| 88 | } |
| 89 | |
| 90 | |
| 91 | std::ostream& operator<<(std::ostream& os, BailoutId id) { |
| 92 | return os << id.id_; |
| 93 | } |
| 94 | |
| 95 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 96 | void PrintF(const char* format, ...) { |
| 97 | va_list arguments; |
| 98 | va_start(arguments, format); |
| 99 | base::OS::VPrint(format, arguments); |
| 100 | va_end(arguments); |
| 101 | } |
| 102 | |
| 103 | |
| 104 | void PrintF(FILE* out, const char* format, ...) { |
| 105 | va_list arguments; |
| 106 | va_start(arguments, format); |
| 107 | base::OS::VFPrint(out, format, arguments); |
| 108 | va_end(arguments); |
| 109 | } |
| 110 | |
| 111 | |
| 112 | void PrintPID(const char* format, ...) { |
| 113 | base::OS::Print("[%d] ", base::OS::GetCurrentProcessId()); |
| 114 | va_list arguments; |
| 115 | va_start(arguments, format); |
| 116 | base::OS::VPrint(format, arguments); |
| 117 | va_end(arguments); |
| 118 | } |
| 119 | |
| 120 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 121 | void PrintIsolate(void* isolate, const char* format, ...) { |
| 122 | base::OS::Print("[%d:%p] ", base::OS::GetCurrentProcessId(), isolate); |
| 123 | va_list arguments; |
| 124 | va_start(arguments, format); |
| 125 | base::OS::VPrint(format, arguments); |
| 126 | va_end(arguments); |
| 127 | } |
| 128 | |
| 129 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 130 | int SNPrintF(Vector<char> str, const char* format, ...) { |
| 131 | va_list args; |
| 132 | va_start(args, format); |
| 133 | int result = VSNPrintF(str, format, args); |
| 134 | va_end(args); |
| 135 | return result; |
| 136 | } |
| 137 | |
| 138 | |
| 139 | int VSNPrintF(Vector<char> str, const char* format, va_list args) { |
| 140 | return base::OS::VSNPrintF(str.start(), str.length(), format, args); |
| 141 | } |
| 142 | |
| 143 | |
| 144 | void StrNCpy(Vector<char> dest, const char* src, size_t n) { |
| 145 | base::OS::StrNCpy(dest.start(), dest.length(), src, n); |
| 146 | } |
| 147 | |
| 148 | |
| 149 | void Flush(FILE* out) { |
| 150 | fflush(out); |
| 151 | } |
| 152 | |
| 153 | |
| 154 | char* ReadLine(const char* prompt) { |
| 155 | char* result = NULL; |
| 156 | char line_buf[256]; |
| 157 | int offset = 0; |
| 158 | bool keep_going = true; |
| 159 | fprintf(stdout, "%s", prompt); |
| 160 | fflush(stdout); |
| 161 | while (keep_going) { |
| 162 | if (fgets(line_buf, sizeof(line_buf), stdin) == NULL) { |
| 163 | // fgets got an error. Just give up. |
| 164 | if (result != NULL) { |
| 165 | DeleteArray(result); |
| 166 | } |
| 167 | return NULL; |
| 168 | } |
| 169 | int len = StrLength(line_buf); |
| 170 | if (len > 1 && |
| 171 | line_buf[len - 2] == '\\' && |
| 172 | line_buf[len - 1] == '\n') { |
| 173 | // When we read a line that ends with a "\" we remove the escape and |
| 174 | // append the remainder. |
| 175 | line_buf[len - 2] = '\n'; |
| 176 | line_buf[len - 1] = 0; |
| 177 | len -= 1; |
| 178 | } else if ((len > 0) && (line_buf[len - 1] == '\n')) { |
| 179 | // Since we read a new line we are done reading the line. This |
| 180 | // will exit the loop after copying this buffer into the result. |
| 181 | keep_going = false; |
| 182 | } |
| 183 | if (result == NULL) { |
| 184 | // Allocate the initial result and make room for the terminating '\0' |
| 185 | result = NewArray<char>(len + 1); |
| 186 | } else { |
| 187 | // Allocate a new result with enough room for the new addition. |
| 188 | int new_len = offset + len + 1; |
| 189 | char* new_result = NewArray<char>(new_len); |
| 190 | // Copy the existing input into the new array and set the new |
| 191 | // array as the result. |
| 192 | MemCopy(new_result, result, offset * kCharSize); |
| 193 | DeleteArray(result); |
| 194 | result = new_result; |
| 195 | } |
| 196 | // Copy the newly read line into the result. |
| 197 | MemCopy(result + offset, line_buf, len * kCharSize); |
| 198 | offset += len; |
| 199 | } |
| 200 | DCHECK(result != NULL); |
| 201 | result[offset] = '\0'; |
| 202 | return result; |
| 203 | } |
| 204 | |
| 205 | |
| 206 | char* ReadCharsFromFile(FILE* file, |
| 207 | int* size, |
| 208 | int extra_space, |
| 209 | bool verbose, |
| 210 | const char* filename) { |
| 211 | if (file == NULL || fseek(file, 0, SEEK_END) != 0) { |
| 212 | if (verbose) { |
| 213 | base::OS::PrintError("Cannot read from file %s.\n", filename); |
| 214 | } |
| 215 | return NULL; |
| 216 | } |
| 217 | |
| 218 | // Get the size of the file and rewind it. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 219 | *size = static_cast<int>(ftell(file)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 220 | rewind(file); |
| 221 | |
| 222 | char* result = NewArray<char>(*size + extra_space); |
| 223 | for (int i = 0; i < *size && feof(file) == 0;) { |
| 224 | int read = static_cast<int>(fread(&result[i], 1, *size - i, file)); |
| 225 | if (read != (*size - i) && ferror(file) != 0) { |
| 226 | fclose(file); |
| 227 | DeleteArray(result); |
| 228 | return NULL; |
| 229 | } |
| 230 | i += read; |
| 231 | } |
| 232 | return result; |
| 233 | } |
| 234 | |
| 235 | |
| 236 | char* ReadCharsFromFile(const char* filename, |
| 237 | int* size, |
| 238 | int extra_space, |
| 239 | bool verbose) { |
| 240 | FILE* file = base::OS::FOpen(filename, "rb"); |
| 241 | char* result = ReadCharsFromFile(file, size, extra_space, verbose, filename); |
| 242 | if (file != NULL) fclose(file); |
| 243 | return result; |
| 244 | } |
| 245 | |
| 246 | |
| 247 | byte* ReadBytes(const char* filename, int* size, bool verbose) { |
| 248 | char* chars = ReadCharsFromFile(filename, size, 0, verbose); |
| 249 | return reinterpret_cast<byte*>(chars); |
| 250 | } |
| 251 | |
| 252 | |
| 253 | static Vector<const char> SetVectorContents(char* chars, |
| 254 | int size, |
| 255 | bool* exists) { |
| 256 | if (!chars) { |
| 257 | *exists = false; |
| 258 | return Vector<const char>::empty(); |
| 259 | } |
| 260 | chars[size] = '\0'; |
| 261 | *exists = true; |
| 262 | return Vector<const char>(chars, size); |
| 263 | } |
| 264 | |
| 265 | |
| 266 | Vector<const char> ReadFile(const char* filename, |
| 267 | bool* exists, |
| 268 | bool verbose) { |
| 269 | int size; |
| 270 | char* result = ReadCharsFromFile(filename, &size, 1, verbose); |
| 271 | return SetVectorContents(result, size, exists); |
| 272 | } |
| 273 | |
| 274 | |
| 275 | Vector<const char> ReadFile(FILE* file, |
| 276 | bool* exists, |
| 277 | bool verbose) { |
| 278 | int size; |
| 279 | char* result = ReadCharsFromFile(file, &size, 1, verbose, ""); |
| 280 | return SetVectorContents(result, size, exists); |
| 281 | } |
| 282 | |
| 283 | |
| 284 | int WriteCharsToFile(const char* str, int size, FILE* f) { |
| 285 | int total = 0; |
| 286 | while (total < size) { |
| 287 | int write = static_cast<int>(fwrite(str, 1, size - total, f)); |
| 288 | if (write == 0) { |
| 289 | return total; |
| 290 | } |
| 291 | total += write; |
| 292 | str += write; |
| 293 | } |
| 294 | return total; |
| 295 | } |
| 296 | |
| 297 | |
| 298 | int AppendChars(const char* filename, |
| 299 | const char* str, |
| 300 | int size, |
| 301 | bool verbose) { |
| 302 | FILE* f = base::OS::FOpen(filename, "ab"); |
| 303 | if (f == NULL) { |
| 304 | if (verbose) { |
| 305 | base::OS::PrintError("Cannot open file %s for writing.\n", filename); |
| 306 | } |
| 307 | return 0; |
| 308 | } |
| 309 | int written = WriteCharsToFile(str, size, f); |
| 310 | fclose(f); |
| 311 | return written; |
| 312 | } |
| 313 | |
| 314 | |
| 315 | int WriteChars(const char* filename, |
| 316 | const char* str, |
| 317 | int size, |
| 318 | bool verbose) { |
| 319 | FILE* f = base::OS::FOpen(filename, "wb"); |
| 320 | if (f == NULL) { |
| 321 | if (verbose) { |
| 322 | base::OS::PrintError("Cannot open file %s for writing.\n", filename); |
| 323 | } |
| 324 | return 0; |
| 325 | } |
| 326 | int written = WriteCharsToFile(str, size, f); |
| 327 | fclose(f); |
| 328 | return written; |
| 329 | } |
| 330 | |
| 331 | |
| 332 | int WriteBytes(const char* filename, |
| 333 | const byte* bytes, |
| 334 | int size, |
| 335 | bool verbose) { |
| 336 | const char* str = reinterpret_cast<const char*>(bytes); |
| 337 | return WriteChars(filename, str, size, verbose); |
| 338 | } |
| 339 | |
| 340 | |
| 341 | |
| 342 | void StringBuilder::AddFormatted(const char* format, ...) { |
| 343 | va_list arguments; |
| 344 | va_start(arguments, format); |
| 345 | AddFormattedList(format, arguments); |
| 346 | va_end(arguments); |
| 347 | } |
| 348 | |
| 349 | |
| 350 | void StringBuilder::AddFormattedList(const char* format, va_list list) { |
| 351 | DCHECK(!is_finalized() && position_ <= buffer_.length()); |
| 352 | int n = VSNPrintF(buffer_ + position_, format, list); |
| 353 | if (n < 0 || n >= (buffer_.length() - position_)) { |
| 354 | position_ = buffer_.length(); |
| 355 | } else { |
| 356 | position_ += n; |
| 357 | } |
| 358 | } |
| 359 | |
| 360 | |
| 361 | #if V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_X87 |
| 362 | static void MemMoveWrapper(void* dest, const void* src, size_t size) { |
| 363 | memmove(dest, src, size); |
| 364 | } |
| 365 | |
| 366 | |
| 367 | // Initialize to library version so we can call this at any time during startup. |
| 368 | static MemMoveFunction memmove_function = &MemMoveWrapper; |
| 369 | |
| 370 | // Defined in codegen-ia32.cc. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 371 | MemMoveFunction CreateMemMoveFunction(Isolate* isolate); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 372 | |
| 373 | // Copy memory area to disjoint memory area. |
| 374 | void MemMove(void* dest, const void* src, size_t size) { |
| 375 | if (size == 0) return; |
| 376 | // Note: here we rely on dependent reads being ordered. This is true |
| 377 | // on all architectures we currently support. |
| 378 | (*memmove_function)(dest, src, size); |
| 379 | } |
| 380 | |
| 381 | #elif V8_OS_POSIX && V8_HOST_ARCH_ARM |
| 382 | void MemCopyUint16Uint8Wrapper(uint16_t* dest, const uint8_t* src, |
| 383 | size_t chars) { |
| 384 | uint16_t* limit = dest + chars; |
| 385 | while (dest < limit) { |
| 386 | *dest++ = static_cast<uint16_t>(*src++); |
| 387 | } |
| 388 | } |
| 389 | |
| 390 | |
| 391 | MemCopyUint8Function memcopy_uint8_function = &MemCopyUint8Wrapper; |
| 392 | MemCopyUint16Uint8Function memcopy_uint16_uint8_function = |
| 393 | &MemCopyUint16Uint8Wrapper; |
| 394 | // Defined in codegen-arm.cc. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 395 | MemCopyUint8Function CreateMemCopyUint8Function(Isolate* isolate, |
| 396 | MemCopyUint8Function stub); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 397 | MemCopyUint16Uint8Function CreateMemCopyUint16Uint8Function( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 398 | Isolate* isolate, MemCopyUint16Uint8Function stub); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 399 | |
| 400 | #elif V8_OS_POSIX && V8_HOST_ARCH_MIPS |
| 401 | MemCopyUint8Function memcopy_uint8_function = &MemCopyUint8Wrapper; |
| 402 | // Defined in codegen-mips.cc. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 403 | MemCopyUint8Function CreateMemCopyUint8Function(Isolate* isolate, |
| 404 | MemCopyUint8Function stub); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 405 | #endif |
| 406 | |
| 407 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 408 | static bool g_memcopy_functions_initialized = false; |
| 409 | |
| 410 | |
| 411 | void init_memcopy_functions(Isolate* isolate) { |
| 412 | if (g_memcopy_functions_initialized) return; |
| 413 | g_memcopy_functions_initialized = true; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 414 | #if V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_X87 |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 415 | MemMoveFunction generated_memmove = CreateMemMoveFunction(isolate); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 416 | if (generated_memmove != NULL) { |
| 417 | memmove_function = generated_memmove; |
| 418 | } |
| 419 | #elif V8_OS_POSIX && V8_HOST_ARCH_ARM |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 420 | memcopy_uint8_function = |
| 421 | CreateMemCopyUint8Function(isolate, &MemCopyUint8Wrapper); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 422 | memcopy_uint16_uint8_function = |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 423 | CreateMemCopyUint16Uint8Function(isolate, &MemCopyUint16Uint8Wrapper); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 424 | #elif V8_OS_POSIX && V8_HOST_ARCH_MIPS |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 425 | memcopy_uint8_function = |
| 426 | CreateMemCopyUint8Function(isolate, &MemCopyUint8Wrapper); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 427 | #endif |
| 428 | } |
| 429 | |
| 430 | |
| 431 | bool DoubleToBoolean(double d) { |
| 432 | // NaN, +0, and -0 should return the false object |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 433 | #if V8_TARGET_LITTLE_ENDIAN |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 434 | union IeeeDoubleLittleEndianArchType u; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 435 | #else |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 436 | union IeeeDoubleBigEndianArchType u; |
| 437 | #endif |
| 438 | u.d = d; |
| 439 | if (u.bits.exp == 2047) { |
| 440 | // Detect NaN for IEEE double precision floating point. |
| 441 | if ((u.bits.man_low | u.bits.man_high) != 0) return false; |
| 442 | } |
| 443 | if (u.bits.exp == 0) { |
| 444 | // Detect +0, and -0 for IEEE double precision floating point. |
| 445 | if ((u.bits.man_low | u.bits.man_high) == 0) return false; |
| 446 | } |
| 447 | return true; |
| 448 | } |
| 449 | |
| 450 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 451 | } // namespace internal |
| 452 | } // namespace v8 |