1 // RUN: %clang_cc1 -fsyntax-only -fopenmp -fopenmp-version=45 -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify=expected,omp4 %s -Wuninitialized 2 // RUN: %clang_cc1 -fsyntax-only -fopenmp -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify=expected,omp5 %s -Wuninitialized 3 4 // RUN: %clang_cc1 -fsyntax-only -fopenmp-simd -fopenmp-version=45 -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify=expected,omp4 %s -Wuninitialized 5 // RUN: %clang_cc1 -fsyntax-only -fopenmp-simd -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify=expected,omp5 %s -Wuninitialized 6 7 class S { 8 int a; 9 S() : a(0) {} 10 11 public: 12 S(int v) : a(v) {} 13 S(const S &s) : a(s.a) {} 14 }; 15 16 static int sii; 17 // expected-note@+1 {{defined as threadprivate or thread local}} 18 #pragma omp threadprivate(sii) 19 static int globalii; 20 21 // Currently, we cannot use "0" for global register variables. 22 // register int reg0 __asm__("0"); 23 int reg0; 24 25 int test_iteration_spaces() { 26 const int N = 100; 27 float a[N], b[N], c[N]; 28 int ii, jj, kk; 29 float fii; 30 double dii; 31 int tid = 0; 32 register int reg; // expected-warning {{'register' storage class specifier is deprecated}} 33 #pragma omp parallel 34 #pragma omp masked taskloop simd filter(tid) 35 for (int i = 0; i < 10; i += 1) { 36 c[i] = a[i] + b[i]; 37 } 38 #pragma omp parallel 39 #pragma omp masked taskloop simd 40 for (char i = 0; i < 10; i++) { 41 c[i] = a[i] + b[i]; 42 } 43 #pragma omp parallel 44 #pragma omp masked taskloop simd 45 for (char i = 0; i < 10; i += '\1') { 46 c[i] = a[i] + b[i]; 47 } 48 #pragma omp parallel 49 #pragma omp masked taskloop simd 50 for (long long i = 0; i < 10; i++) { 51 c[i] = a[i] + b[i]; 52 } 53 #pragma omp parallel 54 // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'double'}} 55 #pragma omp masked taskloop simd 56 for (long long i = 0; i < 10; i += 1.5) { 57 c[i] = a[i] + b[i]; 58 } 59 #pragma omp parallel 60 #pragma omp masked taskloop simd 61 for (long long i = 0; i < 'z'; i += 1u) { 62 c[i] = a[i] + b[i]; 63 } 64 #pragma omp parallel 65 // expected-error@+2 {{variable must be of integer or random access iterator type}} 66 #pragma omp masked taskloop simd 67 for (float 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 {{variable must be of integer or random access iterator type}} 72 #pragma omp masked taskloop simd 73 for (double fi = 0; fi < 10.0; fi++) { 74 c[(int)fi] = a[(int)fi] + b[(int)fi]; 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 masked taskloop simd 79 for (int &ref = ii; ref < 10; ref++) { 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 masked taskloop simd 84 for (int i; 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 masked taskloop simd 90 for (int i = 0, j = 0; i < 10; ++i) 91 c[i] = a[i]; 92 93 #pragma omp parallel 94 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 95 #pragma omp masked taskloop simd 96 for (; ii < 10; ++ii) 97 c[ii] = a[ii]; 98 99 #pragma omp parallel 100 // expected-warning@+3 {{expression result unused}} 101 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 102 #pragma omp masked taskloop simd 103 for (ii + 1; ii < 10; ++ii) 104 c[ii] = a[ii]; 105 106 #pragma omp parallel 107 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 108 #pragma omp masked taskloop simd 109 for (c[ii] = 0; ii < 10; ++ii) 110 c[ii] = a[ii]; 111 112 #pragma omp parallel 113 // Ok to skip parenthesises. 114 #pragma omp masked taskloop simd 115 for (((ii)) = 0; ii < 10; ++ii) 116 c[ii] = a[ii]; 117 118 #pragma omp parallel 119 // omp4-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} omp5-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', '>=', or '!=') of loop variable 'i'}} 120 #pragma omp masked taskloop simd 121 for (int i = 0; i; i++) 122 c[i] = a[i]; 123 124 #pragma omp parallel 125 // omp4-error@+3 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} omp5-error@+3 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', '>=', or '!=') of loop variable 'i'}} 126 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'i'}} 127 #pragma omp masked taskloop simd 128 for (int i = 0; jj < kk; ii++) 129 c[i] = a[i]; 130 131 #pragma omp parallel 132 // omp4-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} omp5-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', '>=', or '!=') of loop variable 'i'}} 133 #pragma omp masked taskloop simd 134 for (int i = 0; !!i; i++) 135 c[i] = a[i]; 136 137 #pragma omp parallel 138 // omp4-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} 139 #pragma omp masked taskloop simd 140 for (int i = 0; i != 1; i++) 141 c[i] = a[i]; 142 143 #pragma omp parallel 144 // omp4-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} omp5-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', '>=', or '!=') of loop variable 'i'}} 145 #pragma omp masked taskloop simd 146 for (int i = 0;; i++) 147 c[i] = a[i]; 148 149 #pragma omp parallel 150 // Ok. 151 #pragma omp masked taskloop simd 152 for (int i = 11; i > 10; i--) 153 c[i] = a[i]; 154 155 #pragma omp parallel 156 // Ok. 157 #pragma omp masked taskloop simd 158 for (int i = 0; i < 10; ++i) 159 c[i] = a[i]; 160 161 #pragma omp parallel 162 // Ok. 163 #pragma omp masked taskloop simd 164 for (ii = 0; ii < 10; ++ii) 165 c[ii] = a[ii]; 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 masked taskloop simd 170 for (ii = 0; ii < 10; ++jj) 171 c[ii] = a[jj]; 172 173 #pragma omp parallel 174 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 175 #pragma omp masked taskloop simd 176 for (ii = 0; ii < 10; ++++ii) 177 c[ii] = a[ii]; 178 179 #pragma omp parallel 180 // Ok but undefined behavior (in general, cannot check that incr 181 // is really loop-invariant). 182 #pragma omp masked taskloop simd 183 for (ii = 0; ii < 10; ii = ii + ii) 184 c[ii] = a[ii]; 185 186 #pragma omp parallel 187 // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'float'}} 188 #pragma omp masked taskloop simd 189 for (ii = 0; ii < 10; ii = ii + 1.0f) 190 c[ii] = a[ii]; 191 192 #pragma omp parallel 193 // Ok - step was converted to integer type. 194 #pragma omp masked taskloop simd 195 for (ii = 0; ii < 10; ii = ii + (int)1.1f) 196 c[ii] = a[ii]; 197 198 #pragma omp parallel 199 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 200 #pragma omp masked taskloop simd 201 for (ii = 0; ii < 10; jj = ii + 2) 202 c[ii] = a[ii]; 203 204 #pragma omp parallel 205 // expected-warning@+3 {{relational comparison result unused}} 206 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 207 #pragma omp masked taskloop simd 208 for (ii = 0; ii<10; jj> kk + 2) 209 c[ii] = a[ii]; 210 211 #pragma omp parallel 212 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 213 #pragma omp masked taskloop simd 214 for (ii = 0; ii < 10;) 215 c[ii] = a[ii]; 216 217 #pragma omp parallel 218 // expected-warning@+3 {{expression result unused}} 219 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 220 #pragma omp masked taskloop simd 221 for (ii = 0; ii < 10; !ii) 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 masked taskloop simd 227 for (ii = 0; ii < 10; ii ? ++ii : ++jj) 228 c[ii] = a[ii]; 229 230 #pragma omp parallel 231 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 232 #pragma omp masked taskloop simd 233 for (ii = 0; ii < 10; ii = ii < 10) 234 c[ii] = a[ii]; 235 236 #pragma omp parallel 237 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 238 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 239 #pragma omp masked taskloop simd 240 for (ii = 0; ii < 10; ii = ii + 0) 241 c[ii] = a[ii]; 242 243 #pragma omp parallel 244 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 245 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 246 #pragma omp masked taskloop simd 247 for (ii = 0; ii < 10; ii = ii + (int)(0.8 - 0.45)) 248 c[ii] = a[ii]; 249 250 #pragma omp parallel 251 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 252 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 253 #pragma omp masked taskloop simd 254 for (ii = 0; (ii) < 10; ii -= 25) 255 c[ii] = a[ii]; 256 257 #pragma omp parallel 258 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 259 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 260 #pragma omp masked taskloop simd 261 for (ii = 0; (ii < 10); ii -= 0) 262 c[ii] = a[ii]; 263 264 #pragma omp parallel 265 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 266 // expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}} 267 #pragma omp masked taskloop simd 268 for (ii = 0; ii > 10; (ii += 0)) 269 c[ii] = a[ii]; 270 271 #pragma omp parallel 272 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 273 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 274 #pragma omp masked taskloop simd 275 for (ii = 0; ii < 10; (ii) = (1 - 1) + (ii)) 276 c[ii] = a[ii]; 277 278 #pragma omp parallel 279 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 280 // expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}} 281 #pragma omp masked taskloop simd 282 for ((ii = 0); ii > 10; (ii -= 0)) 283 c[ii] = a[ii]; 284 285 #pragma omp parallel 286 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 287 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 288 #pragma omp masked taskloop simd 289 for (ii = 0; (ii < 10); (ii -= 0)) 290 c[ii] = a[ii]; 291 292 #pragma omp parallel 293 // expected-note@+2 {{defined as firstprivate}} 294 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp masked taskloop simd' directive may not be firstprivate, predetermined as linear}} 295 #pragma omp masked taskloop simd firstprivate(ii) 296 for (ii = 0; ii < 10; ii++) 297 c[ii] = a[ii]; 298 299 #pragma omp parallel 300 #pragma omp masked taskloop simd linear(ii) 301 for (ii = 0; ii < 10; ii++) 302 c[ii] = a[ii]; 303 304 // omp4-note@+3 {{defined as private}} 305 // omp4-error@+3 {{loop iteration variable in the associated loop of 'omp masked taskloop simd' directive may not be private, predetermined as linear}} 306 #pragma omp parallel 307 #pragma omp masked taskloop simd private(ii) 308 for (ii = 0; ii < 10; ii++) 309 c[ii] = a[ii]; 310 311 // omp4-note@+3 {{defined as lastprivate}} 312 // omp4-error@+3 {{loop iteration variable in the associated loop of 'omp masked taskloop simd' directive may not be lastprivate, predetermined as linear}} 313 #pragma omp parallel 314 #pragma omp masked taskloop simd lastprivate(ii) 315 for (ii = 0; ii < 10; ii++) 316 c[ii] = a[ii]; 317 318 #pragma omp parallel 319 { 320 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp masked taskloop simd' directive may not be threadprivate or thread local, predetermined as linear}} 321 #pragma omp masked taskloop simd 322 for (sii = 0; sii < 10; sii += 1) 323 c[sii] = a[sii]; 324 } 325 326 #pragma omp parallel 327 { 328 #pragma omp masked taskloop simd 329 for (reg0 = 0; reg0 < 10; reg0 += 1) 330 c[reg0] = a[reg0]; 331 } 332 333 #pragma omp parallel 334 { 335 #pragma omp masked taskloop simd 336 for (reg = 0; reg < 10; reg += 1) 337 c[reg] = a[reg]; 338 } 339 340 #pragma omp parallel 341 { 342 #pragma omp masked taskloop simd 343 for (globalii = 0; globalii < 10; globalii += 1) 344 c[globalii] = a[globalii]; 345 } 346 347 #pragma omp parallel 348 { 349 #pragma omp masked taskloop simd collapse(2) 350 for (ii = 0; ii < 10; ii += 1) 351 for (globalii = 0; globalii < 10; globalii += 1) 352 c[globalii] += a[globalii] + ii; 353 } 354 355 #pragma omp parallel 356 // omp4-error@+2 {{statement after '#pragma omp masked taskloop simd' must be a for loop}} 357 #pragma omp masked taskloop simd 358 for (auto &item : a) { 359 item = item + 1; 360 } 361 362 #pragma omp parallel 363 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 364 // expected-error@+2 {{increment expression must cause 'i' to increase on each iteration of OpenMP for loop}} 365 #pragma omp masked taskloop simd 366 for (unsigned i = 9; i < 10; i--) { 367 c[i] = a[i] + b[i]; 368 } 369 370 int(*lb)[4] = nullptr; 371 #pragma omp parallel 372 #pragma omp masked taskloop simd 373 for (int(*p)[4] = lb; p < lb + 8; ++p) { 374 } 375 376 #pragma omp parallel 377 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 378 #pragma omp masked taskloop simd 379 for (int a{0}; a < 10; ++a) { 380 } 381 382 return 0; 383 } 384 385 // Iterators allowed in openmp for-loops. 386 namespace std { 387 struct random_access_iterator_tag {}; 388 template <class Iter> 389 struct iterator_traits { 390 typedef typename Iter::difference_type difference_type; 391 typedef typename Iter::iterator_category iterator_category; 392 }; 393 template <class Iter> 394 typename iterator_traits<Iter>::difference_type 395 distance(Iter first, Iter last) { return first - last; } 396 } 397 class Iter0 { 398 public: 399 Iter0() {} 400 Iter0(const Iter0 &) {} 401 Iter0 operator++() { return *this; } 402 Iter0 operator--() { return *this; } 403 bool operator<(Iter0 a) { return true; } 404 }; 405 // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'Iter0' for 1st argument}} 406 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'Iter0' for 1st argument}} 407 int operator-(Iter0 a, Iter0 b) { return 0; } 408 class Iter1 { 409 public: 410 Iter1(float f = 0.0f, double d = 0.0) {} 411 Iter1(const Iter1 &) {} 412 Iter1 operator++() { return *this; } 413 Iter1 operator--() { return *this; } 414 bool operator<(Iter1 a) { return true; } 415 bool operator>=(Iter1 a) { return false; } 416 }; 417 class GoodIter { 418 public: 419 GoodIter() {} 420 GoodIter(const GoodIter &) {} 421 GoodIter(int fst, int snd) {} 422 GoodIter &operator=(const GoodIter &that) { return *this; } 423 GoodIter &operator=(const Iter0 &that) { return *this; } 424 GoodIter &operator+=(int x) { return *this; } 425 GoodIter &operator-=(int x) { return *this; } 426 explicit GoodIter(void *) {} 427 GoodIter operator++() { return *this; } 428 GoodIter operator--() { return *this; } 429 bool operator!() { return true; } 430 bool operator<(GoodIter a) { return true; } 431 bool operator<=(GoodIter a) { return true; } 432 bool operator>=(GoodIter a) { return false; } 433 typedef int difference_type; 434 typedef std::random_access_iterator_tag iterator_category; 435 }; 436 // expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'GoodIter' for 2nd argument}} 437 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}} 438 int operator-(GoodIter a, GoodIter b) { return 0; } 439 // expected-note@+1 3 {{candidate function not viable: requires single argument 'a', but 2 arguments were provided}} 440 GoodIter operator-(GoodIter a) { return a; } 441 // expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'int' for 2nd argument}} 442 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}} 443 GoodIter operator-(GoodIter a, int v) { return GoodIter(); } 444 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'GoodIter' for 1st argument}} 445 GoodIter operator+(GoodIter a, int v) { return GoodIter(); } 446 // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'int' for 1st argument}} 447 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'int' for 1st argument}} 448 GoodIter operator-(int v, GoodIter a) { return GoodIter(); } 449 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'int' for 1st argument}} 450 GoodIter operator+(int v, GoodIter a) { return GoodIter(); } 451 452 int test_with_random_access_iterator() { 453 GoodIter begin, end; 454 Iter0 begin0, end0; 455 #pragma omp parallel 456 #pragma omp masked taskloop simd 457 for (GoodIter I = begin; I < end; ++I) 458 ++I; 459 #pragma omp parallel 460 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 461 #pragma omp masked taskloop simd 462 for (GoodIter &I = begin; I < end; ++I) 463 ++I; 464 #pragma omp parallel 465 #pragma omp masked taskloop simd 466 for (GoodIter I = begin; I >= end; --I) 467 ++I; 468 #pragma omp parallel 469 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 470 #pragma omp masked taskloop simd 471 for (GoodIter I(begin); I < end; ++I) 472 ++I; 473 #pragma omp parallel 474 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 475 #pragma omp masked taskloop simd 476 for (GoodIter I(nullptr); I < end; ++I) 477 ++I; 478 #pragma omp parallel 479 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 480 #pragma omp masked taskloop simd 481 for (GoodIter I(0); I < end; ++I) 482 ++I; 483 #pragma omp parallel 484 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 485 #pragma omp masked taskloop simd 486 for (GoodIter I(1, 2); I < end; ++I) 487 ++I; 488 #pragma omp parallel 489 #pragma omp masked taskloop simd 490 for (begin = GoodIter(0); begin < end; ++begin) 491 ++begin; 492 // expected-error@+4 {{invalid operands to binary expression ('GoodIter' and 'const Iter0')}} 493 // expected-error@+3 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}} 494 #pragma omp parallel 495 #pragma omp masked taskloop simd 496 for (begin = begin0; begin < end; ++begin) 497 ++begin; 498 #pragma omp parallel 499 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 500 #pragma omp masked taskloop simd 501 for (++begin; begin < end; ++begin) 502 ++begin; 503 #pragma omp parallel 504 #pragma omp masked taskloop simd 505 for (begin = end; begin < end; ++begin) 506 ++begin; 507 #pragma omp parallel 508 // omp4-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}} omp5-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', '>=', or '!=') of loop variable 'I'}} 509 #pragma omp masked taskloop simd 510 for (GoodIter I = begin; I - I; ++I) 511 ++I; 512 #pragma omp parallel 513 // omp4-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}} omp5-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', '>=', or '!=') of loop variable 'I'}} 514 #pragma omp masked taskloop simd 515 for (GoodIter I = begin; begin < end; ++I) 516 ++I; 517 #pragma omp parallel 518 // omp4-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}} omp5-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', '>=', or '!=') of loop variable 'I'}} 519 #pragma omp masked taskloop simd 520 for (GoodIter I = begin; !I; ++I) 521 ++I; 522 #pragma omp parallel 523 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 524 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 525 #pragma omp masked taskloop simd 526 for (GoodIter I = begin; I >= end; I = I + 1) 527 ++I; 528 #pragma omp parallel 529 #pragma omp masked taskloop simd 530 for (GoodIter I = begin; I >= end; I = I - 1) 531 ++I; 532 #pragma omp parallel 533 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}} 534 #pragma omp masked taskloop simd 535 for (GoodIter I = begin; I >= end; I = -I) 536 ++I; 537 #pragma omp parallel 538 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 539 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 540 #pragma omp masked taskloop simd 541 for (GoodIter I = begin; I >= end; I = 2 + I) 542 ++I; 543 #pragma omp parallel 544 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}} 545 #pragma omp masked taskloop simd 546 for (GoodIter I = begin; I >= end; I = 2 - I) 547 ++I; 548 // In the following example, we cannot update the loop variable using '+=' 549 // expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}} 550 #pragma omp parallel 551 #pragma omp masked taskloop simd 552 for (Iter0 I = begin0; I < end0; ++I) 553 ++I; 554 #pragma omp parallel 555 // Initializer is constructor without params. 556 // expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}} 557 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 558 #pragma omp masked taskloop simd 559 for (Iter0 I; I < end0; ++I) 560 ++I; 561 Iter1 begin1, end1; 562 // expected-error@+4 {{invalid operands to binary expression ('Iter1' and 'Iter1')}} 563 // expected-error@+3 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}} 564 #pragma omp parallel 565 #pragma omp masked taskloop simd 566 for (Iter1 I = begin1; I < end1; ++I) 567 ++I; 568 #pragma omp parallel 569 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 570 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 571 #pragma omp masked taskloop simd 572 for (Iter1 I = begin1; I >= end1; ++I) 573 ++I; 574 #pragma omp parallel 575 // expected-error@+5 {{invalid operands to binary expression ('Iter1' and 'float')}} 576 // expected-error@+4 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}} 577 // Initializer is constructor with all default params. 578 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 579 #pragma omp masked taskloop simd 580 for (Iter1 I; I < end1; ++I) { 581 } 582 return 0; 583 } 584 585 template <typename IT, int ST> 586 class TC { 587 public: 588 int dotest_lt(IT begin, IT end) { 589 #pragma omp parallel 590 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 591 // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}} 592 #pragma omp masked taskloop simd 593 for (IT I = begin; I < end; I = I + ST) { 594 ++I; 595 } 596 #pragma omp parallel 597 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 598 // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}} 599 #pragma omp masked taskloop simd 600 for (IT I = begin; I <= end; I += ST) { 601 ++I; 602 } 603 #pragma omp parallel 604 #pragma omp masked taskloop simd 605 for (IT I = begin; I < end; ++I) { 606 ++I; 607 } 608 } 609 610 static IT step() { 611 return IT(ST); 612 } 613 }; 614 template <typename IT, int ST = 0> 615 int dotest_gt(IT begin, IT end) { 616 #pragma omp parallel 617 // expected-note@+3 2 {{loop step is expected to be negative due to this condition}} 618 // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 619 #pragma omp masked taskloop simd 620 for (IT I = begin; I >= end; I = I + ST) { 621 ++I; 622 } 623 #pragma omp parallel 624 // expected-note@+3 2 {{loop step is expected to be negative due to this condition}} 625 // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 626 #pragma omp masked taskloop simd 627 for (IT I = begin; I >= end; I += ST) { 628 ++I; 629 } 630 631 #pragma omp parallel 632 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 633 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 634 #pragma omp masked taskloop simd 635 for (IT I = begin; I >= end; ++I) { 636 ++I; 637 } 638 639 #pragma omp parallel 640 #pragma omp masked taskloop simd 641 for (IT I = begin; I < end; I += TC<int, ST>::step()) { 642 ++I; 643 } 644 } 645 646 void test_with_template() { 647 GoodIter begin, end; 648 TC<GoodIter, 100> t1; 649 TC<GoodIter, -100> t2; 650 t1.dotest_lt(begin, end); 651 t2.dotest_lt(begin, end); // expected-note {{in instantiation of member function 'TC<GoodIter, -100>::dotest_lt' requested here}} 652 dotest_gt(begin, end); // expected-note {{in instantiation of function template specialization 'dotest_gt<GoodIter, 0>' requested here}} 653 dotest_gt<unsigned, 10>(0, 100); // expected-note {{in instantiation of function template specialization 'dotest_gt<unsigned int, 10>' requested here}} 654 } 655 656 void test_loop_break() { 657 const int N = 100; 658 float a[N], b[N], c[N]; 659 #pragma omp parallel 660 #pragma omp masked taskloop simd 661 for (int i = 0; i < 10; i++) { 662 c[i] = a[i] + b[i]; 663 for (int j = 0; j < 10; ++j) { 664 if (a[i] > b[j]) 665 break; // OK in nested loop 666 } 667 switch (i) { 668 case 1: 669 b[i]++; 670 break; 671 default: 672 break; 673 } 674 if (c[i] > 10) 675 break; // expected-error {{'break' statement cannot be used in OpenMP for loop}} 676 677 if (c[i] > 11) 678 break; // expected-error {{'break' statement cannot be used in OpenMP for loop}} 679 } 680 681 #pragma omp parallel 682 #pragma omp masked taskloop simd 683 for (int i = 0; i < 10; i++) { 684 for (int j = 0; j < 10; j++) { 685 c[i] = a[i] + b[i]; 686 if (c[i] > 10) { 687 if (c[i] < 20) { 688 break; // OK 689 } 690 } 691 } 692 } 693 } 694 695 void test_loop_eh() { 696 const int N = 100; 697 float a[N], b[N], c[N]; 698 #pragma omp parallel 699 #pragma omp masked taskloop simd 700 for (int i = 0; i < 10; i++) { 701 c[i] = a[i] + b[i]; 702 try { // expected-error {{'try' statement cannot be used in OpenMP simd region}} 703 for (int j = 0; j < 10; ++j) { 704 if (a[i] > b[j]) 705 throw a[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}} 706 } 707 throw a[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}} 708 } catch (float f) { 709 if (f > 0.1) 710 throw a[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}} 711 return; // expected-error {{cannot return from OpenMP region}} 712 } 713 switch (i) { 714 case 1: 715 b[i]++; 716 break; 717 default: 718 break; 719 } 720 for (int j = 0; j < 10; j++) { 721 if (c[i] > 10) 722 throw c[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}} 723 } 724 } 725 if (c[9] > 10) 726 throw c[9]; // OK 727 728 #pragma omp parallel 729 #pragma omp masked taskloop simd 730 for (int i = 0; i < 10; ++i) { 731 struct S { 732 void g() { throw 0; } 733 }; 734 } 735 } 736 737 void test_loop_firstprivate_lastprivate() { 738 S s(4); 739 #pragma omp parallel 740 #pragma omp masked taskloop simd lastprivate(s) firstprivate(s) 741 for (int i = 0; i < 16; ++i) 742 ; 743 } 744 745