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