1 // RUN: %clang_cc1 -fsyntax-only -fopenmp -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify %s 2 3 // RUN: %clang_cc1 -fsyntax-only -fopenmp-simd -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify %s 4 5 class S { 6 int a; 7 S() : a(0) {} 8 9 public: 10 S(int v) : a(v) {} 11 S(const S &s) : a(s.a) {} 12 }; 13 14 static int sii; 15 // expected-note@+1 {{defined as threadprivate or thread local}} 16 #pragma omp threadprivate(sii) 17 static int globalii; 18 19 // Currently, we cannot use "0" for global register variables. 20 // register int reg0 __asm__("0"); 21 int reg0; 22 23 int test_iteration_spaces() { 24 const int N = 100; 25 float a[N], b[N], c[N]; 26 int ii, jj, kk; 27 float fii; 28 double dii; 29 register int reg; // expected-warning {{'register' storage class specifier is deprecated}} 30 #pragma omp parallel 31 #pragma omp for 32 for (int i = 0; i < 10; i += 1) { 33 c[i] = a[i] + b[i]; 34 } 35 #pragma omp parallel 36 #pragma omp for 37 for (char i = 0; i < 10; i++) { 38 c[i] = a[i] + b[i]; 39 } 40 #pragma omp parallel 41 #pragma omp for 42 for (char i = 0; i < 10; i += '\1') { 43 c[i] = a[i] + b[i]; 44 } 45 #pragma omp parallel 46 #pragma omp for 47 for (long long i = 0; i < 10; i++) { 48 c[i] = a[i] + b[i]; 49 } 50 #pragma omp parallel 51 // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'double'}} 52 #pragma omp for 53 for (long long i = 0; i < 10; i += 1.5) { 54 c[i] = a[i] + b[i]; 55 } 56 #pragma omp parallel 57 #pragma omp for 58 for (long long i = 0; i < 'z'; i += 1u) { 59 c[i] = a[i] + b[i]; 60 } 61 #pragma omp parallel 62 // expected-error@+2 {{variable must be of integer or random access iterator type}} 63 #pragma omp for 64 for (float fi = 0; fi < 10.0; fi++) { 65 c[(int)fi] = a[(int)fi] + b[(int)fi]; 66 } 67 #pragma omp parallel 68 // expected-error@+2 {{variable must be of integer or random access iterator type}} 69 #pragma omp for 70 for (double fi = 0; fi < 10.0; fi++) { 71 c[(int)fi] = a[(int)fi] + b[(int)fi]; 72 } 73 #pragma omp parallel 74 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 75 #pragma omp for 76 for (int &ref = ii; ref < 10; ref++) { 77 } 78 #pragma omp parallel 79 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 80 #pragma omp for 81 for (int i; i < 10; i++) 82 c[i] = a[i]; 83 84 #pragma omp parallel 85 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 86 #pragma omp for 87 for (int i = 0, j = 0; i < 10; ++i) 88 c[i] = a[i]; 89 90 #pragma omp parallel 91 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 92 #pragma omp for 93 for (; ii < 10; ++ii) 94 c[ii] = a[ii]; 95 96 #pragma omp parallel 97 // expected-warning@+3 {{expression result unused}} 98 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 99 #pragma omp for 100 for (ii + 1; ii < 10; ++ii) 101 c[ii] = a[ii]; 102 103 #pragma omp parallel 104 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 105 #pragma omp for 106 for (c[ii] = 0; ii < 10; ++ii) 107 c[ii] = a[ii]; 108 109 #pragma omp parallel 110 // Ok to skip parenthesises. 111 #pragma omp for 112 for (((ii)) = 0; ii < 10; ++ii) 113 c[ii] = a[ii]; 114 115 #pragma omp parallel 116 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} 117 #pragma omp for 118 for (int i = 0; i; i++) 119 c[i] = a[i]; 120 121 #pragma omp parallel 122 // expected-error@+3 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} 123 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'i'}} 124 #pragma omp for 125 for (int i = 0; jj < kk; ii++) 126 c[i] = a[i]; 127 128 #pragma omp parallel 129 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} 130 #pragma omp for 131 for (int i = 0; !!i; i++) 132 c[i] = a[i]; 133 134 #pragma omp parallel 135 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} 136 #pragma omp for 137 for (int i = 0; i != 1; i++) 138 c[i] = a[i]; 139 140 #pragma omp parallel 141 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} 142 #pragma omp for 143 for (int i = 0;; i++) 144 c[i] = a[i]; 145 146 #pragma omp parallel 147 // Ok. 148 #pragma omp for 149 for (int i = 11; i > 10; i--) 150 c[i] = a[i]; 151 152 #pragma omp parallel 153 // Ok. 154 #pragma omp for 155 for (int i = 0; i < 10; ++i) 156 c[i] = a[i]; 157 158 #pragma omp parallel 159 // Ok. 160 #pragma omp for 161 for (ii = 0; ii < 10; ++ii) 162 c[ii] = a[ii]; 163 164 #pragma omp parallel 165 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 166 #pragma omp for 167 for (ii = 0; ii < 10; ++jj) 168 c[ii] = a[jj]; 169 170 #pragma omp parallel 171 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 172 #pragma omp for 173 for (ii = 0; ii < 10; ++++ii) 174 c[ii] = a[ii]; 175 176 #pragma omp parallel 177 // Ok but undefined behavior (in general, cannot check that incr 178 // is really loop-invariant). 179 #pragma omp for 180 for (ii = 0; ii < 10; ii = ii + ii) 181 c[ii] = a[ii]; 182 183 #pragma omp parallel 184 // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'float'}} 185 #pragma omp for 186 for (ii = 0; ii < 10; ii = ii + 1.0f) 187 c[ii] = a[ii]; 188 189 #pragma omp parallel 190 // Ok - step was converted to integer type. 191 #pragma omp for 192 for (ii = 0; ii < 10; ii = ii + (int)1.1f) 193 c[ii] = a[ii]; 194 195 #pragma omp parallel 196 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 197 #pragma omp for 198 for (ii = 0; ii < 10; jj = ii + 2) 199 c[ii] = a[ii]; 200 201 #pragma omp parallel 202 // expected-warning@+3 {{relational comparison result unused}} 203 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 204 #pragma omp for 205 for (ii = 0; ii<10; jj> kk + 2) 206 c[ii] = a[ii]; 207 208 #pragma omp parallel 209 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 210 #pragma omp for 211 for (ii = 0; ii < 10;) 212 c[ii] = a[ii]; 213 214 #pragma omp parallel 215 // expected-warning@+3 {{expression result unused}} 216 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 217 #pragma omp for 218 for (ii = 0; ii < 10; !ii) 219 c[ii] = a[ii]; 220 221 #pragma omp parallel 222 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 223 #pragma omp for 224 for (ii = 0; ii < 10; ii ? ++ii : ++jj) 225 c[ii] = a[ii]; 226 227 #pragma omp parallel 228 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 229 #pragma omp for 230 for (ii = 0; ii < 10; ii = ii < 10) 231 c[ii] = a[ii]; 232 233 #pragma omp parallel 234 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 235 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 236 #pragma omp for 237 for (ii = 0; ii < 10; ii = ii + 0) 238 c[ii] = a[ii]; 239 240 #pragma omp parallel 241 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 242 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 243 #pragma omp for 244 for (ii = 0; ii < 10; ii = ii + (int)(0.8 - 0.45)) 245 c[ii] = a[ii]; 246 247 #pragma omp parallel 248 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 249 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 250 #pragma omp for 251 for (ii = 0; (ii) < 10; ii -= 25) 252 c[ii] = a[ii]; 253 254 #pragma omp parallel 255 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 256 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 257 #pragma omp for 258 for (ii = 0; (ii < 10); ii -= 0) 259 c[ii] = a[ii]; 260 261 #pragma omp parallel 262 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 263 // expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}} 264 #pragma omp for 265 for (ii = 0; ii > 10; (ii += 0)) 266 c[ii] = a[ii]; 267 268 #pragma omp parallel 269 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 270 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 271 #pragma omp for 272 for (ii = 0; ii < 10; (ii) = (1 - 1) + (ii)) 273 c[ii] = a[ii]; 274 275 #pragma omp parallel 276 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 277 // expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}} 278 #pragma omp for 279 for ((ii = 0); ii > 10; (ii -= 0)) 280 c[ii] = a[ii]; 281 282 #pragma omp parallel 283 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 284 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 285 #pragma omp for 286 for (ii = 0; (ii < 10); (ii -= 0)) 287 c[ii] = a[ii]; 288 289 #pragma omp parallel 290 // expected-note@+2 {{defined as firstprivate}} 291 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp for' directive may not be firstprivate, predetermined as private}} 292 #pragma omp for firstprivate(ii) 293 for (ii = 0; ii < 10; ii++) 294 c[ii] = a[ii]; 295 296 #pragma omp parallel 297 // expected-note@+2 {{defined as linear}} 298 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp for' directive may not be linear, predetermined as private}} 299 #pragma omp for linear(ii) 300 for (ii = 0; ii < 10; ii++) 301 c[ii] = a[ii]; 302 303 #pragma omp parallel 304 #pragma omp for private(ii) 305 for (ii = 0; ii < 10; ii++) 306 c[ii] = a[ii]; 307 308 #pragma omp parallel 309 #pragma omp for lastprivate(ii) 310 for (ii = 0; ii < 10; ii++) 311 c[ii] = a[ii]; 312 313 #pragma omp parallel 314 { 315 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp for' directive may not be threadprivate or thread local, predetermined as private}} 316 #pragma omp for 317 for (sii = 0; sii < 10; sii += 1) 318 c[sii] = a[sii]; 319 } 320 321 #pragma omp parallel 322 { 323 #pragma omp for 324 for (reg0 = 0; reg0 < 10; reg0 += 1) 325 c[reg0] = a[reg0]; 326 } 327 328 #pragma omp parallel 329 { 330 #pragma omp for 331 for (reg = 0; reg < 10; reg += 1) 332 c[reg] = a[reg]; 333 } 334 335 #pragma omp parallel 336 { 337 #pragma omp for 338 for (globalii = 0; globalii < 10; globalii += 1) 339 c[globalii] = a[globalii]; 340 } 341 342 #pragma omp parallel 343 { 344 #pragma omp for collapse(2) 345 for (ii = 0; ii < 10; ii += 1) 346 for (globalii = 0; globalii < 10; globalii += 1) 347 c[globalii] += a[globalii] + ii; 348 } 349 350 #pragma omp parallel 351 // expected-error@+2 {{statement after '#pragma omp for' must be a for loop}} 352 #pragma omp for 353 for (auto &item : a) { 354 item = item + 1; 355 } 356 357 #pragma omp parallel 358 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 359 // expected-error@+2 {{increment expression must cause 'i' to increase on each iteration of OpenMP for loop}} 360 #pragma omp for 361 for (unsigned i = 9; i < 10; i--) { 362 c[i] = a[i] + b[i]; 363 } 364 365 int(*lb)[4] = nullptr; 366 #pragma omp parallel 367 #pragma omp for 368 for (int(*p)[4] = lb; p < lb + 8; ++p) { 369 } 370 371 #pragma omp parallel 372 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 373 #pragma omp for 374 for (int a{0}; a < 10; ++a) { 375 } 376 377 return 0; 378 } 379 380 // Iterators allowed in openmp for-loops. 381 namespace std { 382 struct random_access_iterator_tag {}; 383 template <class Iter> 384 struct iterator_traits { 385 typedef typename Iter::difference_type difference_type; 386 typedef typename Iter::iterator_category iterator_category; 387 }; 388 template <class Iter> 389 typename iterator_traits<Iter>::difference_type 390 distance(Iter first, Iter last) { return first - last; } 391 } 392 class Iter0 { 393 public: 394 Iter0() {} 395 Iter0(const Iter0 &) {} 396 Iter0 operator++() { return *this; } 397 Iter0 operator--() { return *this; } 398 bool operator<(Iter0 a) { return true; } 399 }; 400 // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'Iter0' for 1st argument}} 401 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'Iter0' for 1st argument}} 402 int operator-(Iter0 a, Iter0 b) { return 0; } 403 class Iter1 { 404 public: 405 Iter1(float f = 0.0f, double d = 0.0) {} 406 Iter1(const Iter1 &) {} 407 Iter1 operator++() { return *this; } 408 Iter1 operator--() { return *this; } 409 bool operator<(Iter1 a) { return true; } 410 bool operator>=(Iter1 a) { return false; } 411 }; 412 class GoodIter { 413 public: 414 GoodIter() {} 415 GoodIter(const GoodIter &) {} 416 GoodIter(int fst, int snd) {} 417 GoodIter &operator=(const GoodIter &that) { return *this; } 418 GoodIter &operator=(const Iter0 &that) { return *this; } 419 GoodIter &operator+=(int x) { return *this; } 420 GoodIter &operator-=(int x) { return *this; } 421 explicit GoodIter(void *) {} 422 GoodIter operator++() { return *this; } 423 GoodIter operator--() { return *this; } 424 bool operator!() { return true; } 425 bool operator<(GoodIter a) { return true; } 426 bool operator<=(GoodIter a) { return true; } 427 bool operator>=(GoodIter a) { return false; } 428 typedef int difference_type; 429 typedef std::random_access_iterator_tag iterator_category; 430 }; 431 class GoodIter1 { 432 public: 433 GoodIter1() {} 434 GoodIter1(const GoodIter1 &) {} 435 GoodIter1 &operator++(int) { return *this; } 436 GoodIter1 &operator=(const GoodIter1 &that) { return *this; } 437 GoodIter1 &operator+=(int x) { return *this; } 438 friend long operator-(const GoodIter1 &, const GoodIter1 &); 439 GoodIter1 &operator-(int) { return *this; } 440 bool operator<(GoodIter1 a) { return true; } 441 typedef int difference_type; 442 typedef std::random_access_iterator_tag iterator_category; 443 }; 444 // expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'GoodIter' for 2nd argument}} 445 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}} 446 int operator-(GoodIter a, GoodIter b) { return 0; } 447 // expected-note@+1 3 {{candidate function not viable: requires single argument 'a', but 2 arguments were provided}} 448 GoodIter operator-(GoodIter a) { return a; } 449 // expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'int' for 2nd argument}} 450 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}} 451 GoodIter operator-(GoodIter a, int v) { return GoodIter(); } 452 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'GoodIter' for 1st argument}} 453 GoodIter operator+(GoodIter a, int v) { return GoodIter(); } 454 // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'int' for 1st argument}} 455 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'int' for 1st argument}} 456 GoodIter operator-(int v, GoodIter a) { return GoodIter(); } 457 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'int' for 1st argument}} 458 GoodIter operator+(int v, GoodIter a) { return GoodIter(); } 459 460 int test_with_random_access_iterator() { 461 GoodIter begin, end; 462 Iter0 begin0, end0; 463 #pragma omp parallel 464 #pragma omp for 465 for (GoodIter I = begin; I < end; ++I) 466 ++I; 467 #pragma omp parallel 468 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 469 #pragma omp for 470 for (GoodIter &I = begin; I < end; ++I) 471 ++I; 472 #pragma omp parallel 473 #pragma omp for 474 for (GoodIter I = begin; I >= end; --I) 475 ++I; 476 #pragma omp parallel 477 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 478 #pragma omp for 479 for (GoodIter I(begin); I < end; ++I) 480 ++I; 481 #pragma omp parallel 482 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 483 #pragma omp for 484 for (GoodIter I(nullptr); I < end; ++I) 485 ++I; 486 #pragma omp parallel 487 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 488 #pragma omp for 489 for (GoodIter I(0); I < end; ++I) 490 ++I; 491 #pragma omp parallel 492 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 493 #pragma omp for 494 for (GoodIter I(1, 2); I < end; ++I) 495 ++I; 496 #pragma omp parallel 497 #pragma omp for 498 for (begin = GoodIter(0); begin < end; ++begin) 499 ++begin; 500 // expected-error@+4 {{invalid operands to binary expression ('GoodIter' and 'const Iter0')}} 501 // expected-error@+3 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}} 502 #pragma omp parallel 503 #pragma omp for 504 for (begin = begin0; begin < end; ++begin) 505 ++begin; 506 #pragma omp parallel 507 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 508 #pragma omp for 509 for (++begin; begin < end; ++begin) 510 ++begin; 511 #pragma omp parallel 512 #pragma omp for 513 for (begin = end; begin < end; ++begin) 514 ++begin; 515 #pragma omp parallel 516 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}} 517 #pragma omp for 518 for (GoodIter I = begin; I - I; ++I) 519 ++I; 520 #pragma omp parallel 521 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}} 522 #pragma omp for 523 for (GoodIter I = begin; begin < end; ++I) 524 ++I; 525 #pragma omp parallel 526 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}} 527 #pragma omp for 528 for (GoodIter I = begin; !I; ++I) 529 ++I; 530 #pragma omp parallel 531 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 532 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 533 #pragma omp for 534 for (GoodIter I = begin; I >= end; I = I + 1) 535 ++I; 536 #pragma omp parallel 537 #pragma omp for 538 for (GoodIter I = begin; I >= end; I = I - 1) 539 ++I; 540 #pragma omp parallel 541 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}} 542 #pragma omp for 543 for (GoodIter I = begin; I >= end; I = -I) 544 ++I; 545 #pragma omp parallel 546 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 547 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 548 #pragma omp for 549 for (GoodIter I = begin; I >= end; I = 2 + I) 550 ++I; 551 #pragma omp parallel 552 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}} 553 #pragma omp for 554 for (GoodIter I = begin; I >= end; I = 2 - I) 555 ++I; 556 // In the following example, we cannot update the loop variable using '+=' 557 // expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}} 558 #pragma omp parallel 559 #pragma omp for 560 for (Iter0 I = begin0; I < end0; ++I) 561 ++I; 562 #pragma omp parallel 563 // Initializer is constructor without params. 564 // expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}} 565 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 566 #pragma omp for 567 for (Iter0 I; I < end0; ++I) 568 ++I; 569 Iter1 begin1, end1; 570 // expected-error@+4 {{invalid operands to binary expression ('Iter1' and 'Iter1')}} 571 // expected-error@+3 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}} 572 #pragma omp parallel 573 #pragma omp for 574 for (Iter1 I = begin1; I < end1; ++I) 575 ++I; 576 #pragma omp parallel 577 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 578 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 579 #pragma omp for 580 for (Iter1 I = begin1; I >= end1; ++I) 581 ++I; 582 #pragma omp parallel 583 // expected-error@+5 {{invalid operands to binary expression ('Iter1' and 'float')}} 584 // expected-error@+4 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}} 585 // Initializer is constructor with all default params. 586 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 587 #pragma omp for 588 for (Iter1 I; I < end1; ++I) { 589 } 590 GoodIter1 I1, E1; 591 #pragma omp for 592 for (GoodIter1 I = I1; I < E1; I++) 593 ; 594 return 0; 595 } 596 597 template <typename IT, int ST> 598 class TC { 599 public: 600 int dotest_lt(IT begin, IT end) { 601 #pragma omp parallel 602 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 603 // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}} 604 #pragma omp for 605 for (IT I = begin; I < end; I = I + ST) { 606 ++I; 607 } 608 #pragma omp parallel 609 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 610 // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}} 611 #pragma omp for 612 for (IT I = begin; I <= end; I += ST) { 613 ++I; 614 } 615 #pragma omp parallel 616 #pragma omp for 617 for (IT I = begin; I < end; ++I) { 618 ++I; 619 } 620 } 621 622 static IT step() { 623 return IT(ST); 624 } 625 }; 626 template <typename IT, int ST = 0> 627 int dotest_gt(IT begin, IT end) { 628 #pragma omp parallel 629 // expected-note@+3 2 {{loop step is expected to be negative due to this condition}} 630 // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 631 #pragma omp for 632 for (IT I = begin; I >= end; I = I + ST) { 633 ++I; 634 } 635 #pragma omp parallel 636 // expected-note@+3 2 {{loop step is expected to be negative due to this condition}} 637 // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 638 #pragma omp for 639 for (IT I = begin; I >= end; I += ST) { 640 ++I; 641 } 642 643 #pragma omp parallel 644 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 645 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 646 #pragma omp for 647 for (IT I = begin; I >= end; ++I) { 648 ++I; 649 } 650 651 #pragma omp parallel 652 #pragma omp for 653 for (IT I = begin; I < end; I += TC<int, ST>::step()) { 654 ++I; 655 } 656 } 657 658 void test_with_template() { 659 GoodIter begin, end; 660 TC<GoodIter, 100> t1; 661 TC<GoodIter, -100> t2; 662 t1.dotest_lt(begin, end); 663 t2.dotest_lt(begin, end); // expected-note {{in instantiation of member function 'TC<GoodIter, -100>::dotest_lt' requested here}} 664 dotest_gt(begin, end); // expected-note {{in instantiation of function template specialization 'dotest_gt<GoodIter, 0>' requested here}} 665 dotest_gt<unsigned, 10>(0, 100); // expected-note {{in instantiation of function template specialization 'dotest_gt<unsigned int, 10>' requested here}} 666 } 667 668 void test_loop_break() { 669 const int N = 100; 670 float a[N], b[N], c[N]; 671 #pragma omp parallel 672 #pragma omp for 673 for (int i = 0; i < 10; i++) { 674 c[i] = a[i] + b[i]; 675 for (int j = 0; j < 10; ++j) { 676 if (a[i] > b[j]) 677 break; // OK in nested loop 678 } 679 switch (i) { 680 case 1: 681 b[i]++; 682 break; 683 default: 684 break; 685 } 686 if (c[i] > 10) 687 break; // expected-error {{'break' statement cannot be used in OpenMP for loop}} 688 689 if (c[i] > 11) 690 break; // expected-error {{'break' statement cannot be used in OpenMP for loop}} 691 } 692 693 #pragma omp parallel 694 #pragma omp for 695 for (int i = 0; i < 10; i++) { 696 for (int j = 0; j < 10; j++) { 697 c[i] = a[i] + b[i]; 698 if (c[i] > 10) { 699 if (c[i] < 20) { 700 break; // OK 701 } 702 } 703 } 704 } 705 } 706 707 void test_loop_eh() { 708 const int N = 100; 709 float a[N], b[N], c[N]; 710 #pragma omp parallel 711 #pragma omp for 712 for (int i = 0; i < 10; i++) { 713 c[i] = a[i] + b[i]; 714 try { 715 for (int j = 0; j < 10; ++j) { 716 if (a[i] > b[j]) 717 throw a[i]; 718 } 719 throw a[i]; 720 } catch (float f) { 721 if (f > 0.1) 722 throw a[i]; 723 return; // expected-error {{cannot return from OpenMP region}} 724 } 725 switch (i) { 726 case 1: 727 b[i]++; 728 break; 729 default: 730 break; 731 } 732 for (int j = 0; j < 10; j++) { 733 if (c[i] > 10) 734 throw c[i]; 735 } 736 } 737 if (c[9] > 10) 738 throw c[9]; // OK 739 740 #pragma omp parallel 741 #pragma omp for 742 for (int i = 0; i < 10; ++i) { 743 struct S { 744 void g() { throw 0; } 745 }; 746 } 747 } 748 749 void test_loop_firstprivate_lastprivate() { 750 S s(4); 751 #pragma omp parallel 752 #pragma omp for lastprivate(s) firstprivate(s) 753 for (int i = 0; i < 16; ++i) 754 ; 755 } 756 757 void test_ordered() { 758 #pragma omp parallel 759 #pragma omp for ordered ordered // expected-error {{directive '#pragma omp for' cannot contain more than one 'ordered' clause}} 760 for (int i = 0; i < 16; ++i) 761 ; 762 } 763 764 void test_nowait() { 765 #pragma omp parallel 766 #pragma omp for nowait nowait // expected-error {{directive '#pragma omp for' cannot contain more than one 'nowait' clause}} 767 for (int i = 0; i < 16; ++i) 768 ; 769 } 770