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