clang/test/OpenMP/distribute_parallel_for_simd_loop_messages.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -fopenmp -fopenmp-version=45 -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify=expected,omp4 %s -Wno-openmp-mapping -Wuninitialized
   2 // RUN: %clang_cc1 -fsyntax-only -fopenmp -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify=expected,omp5 %s -Wno-openmp-mapping -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 -Wno-openmp-mapping -Wuninitialized
   5 // RUN: %clang_cc1 -fsyntax-only -fopenmp-simd -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify=expected,omp5 %s -Wno-openmp-mapping -Wuninitialized
   6
   7 class S {
   8   int a;
   9   S() : a(0) {} // expected-note {{implicitly declared private here}}
  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 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 #pragma omp target
  28 #pragma omp teams
  29 #pragma omp distribute parallel for simd
  30   for (int i = 0; i < 10; i += 1) {
  31     c[i] = a[i] + b[i];
  32   }
  33 #pragma omp target
  34 #pragma omp teams
  35 #pragma omp distribute parallel for simd
  36   for (char i = 0; i < 10; i++) {
  37     c[i] = a[i] + b[i];
  38   }
  39 #pragma omp target
  40 #pragma omp teams
  41 #pragma omp distribute parallel for simd
  42   for (char i = 0; i < 10; i += '\1') {
  43     c[i] = a[i] + b[i];
  44   }
  45 #pragma omp target
  46 #pragma omp teams
  47 #pragma omp distribute parallel for simd
  48   for (long long i = 0; i < 10; i++) {
  49     c[i] = a[i] + b[i];
  50   }
  51 #pragma omp target
  52 #pragma omp teams
  53 // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'double'}}
  54 #pragma omp distribute parallel for simd
  55   for (long long i = 0; i < 10; i += 1.5) {
  56     c[i] = a[i] + b[i];
  57   }
  58 #pragma omp target
  59 #pragma omp teams
  60 #pragma omp distribute parallel for simd
  61   for (long long i = 0; i < 'z'; i += 1u) {
  62     c[i] = a[i] + b[i];
  63   }
  64 #pragma omp target
  65 #pragma omp teams
  66 // expected-error@+2 {{variable must be of integer or random access iterator type}}
  67 #pragma omp distribute parallel for simd
  68   for (float fi = 0; fi < 10.0; fi++) {
  69     c[(int)fi] = a[(int)fi] + b[(int)fi];
  70   }
  71 #pragma omp target
  72 #pragma omp teams
  73 // expected-error@+2 {{variable must be of integer or random access iterator type}}
  74 #pragma omp distribute parallel for simd
  75   for (double fi = 0; fi < 10.0; fi++) {
  76     c[(int)fi] = a[(int)fi] + b[(int)fi];
  77   }
  78 #pragma omp target
  79 #pragma omp teams
  80 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  81 #pragma omp distribute parallel for simd
  82   for (int &ref = ii; ref < 10; ref++) {
  83   }
  84 #pragma omp target
  85 #pragma omp teams
  86 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  87 #pragma omp distribute parallel for simd
  88   for (int i; i < 10; i++)
  89     c[i] = a[i];
  90
  91 #pragma omp target
  92 #pragma omp teams
  93 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  94 #pragma omp distribute parallel for simd
  95   for (int i = 0, j = 0; i < 10; ++i)
  96     c[i] = a[i];
  97
  98 #pragma omp target
  99 #pragma omp teams
 100 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 101 #pragma omp distribute parallel for simd
 102   for (; ii < 10; ++ii)
 103     c[ii] = a[ii];
 104
 105 #pragma omp target
 106 #pragma omp teams
 107 // expected-warning@+3 {{expression result unused}}
 108 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 109 #pragma omp distribute parallel for simd
 110   for (ii + 1; ii < 10; ++ii)
 111     c[ii] = a[ii];
 112
 113 #pragma omp target
 114 #pragma omp teams
 115 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 116 #pragma omp distribute parallel for simd
 117   for (c[ii] = 0; ii < 10; ++ii)
 118     c[ii] = a[ii];
 119
 120 #pragma omp target
 121 #pragma omp teams
 122 // Ok to skip parenthesises.
 123 #pragma omp distribute parallel for simd
 124   for (((ii)) = 0; ii < 10; ++ii)
 125     c[ii] = a[ii];
 126
 127 #pragma omp target
 128 #pragma omp teams
 129 // 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'}}
 130 #pragma omp distribute parallel for simd
 131   for (int i = 0; i; i++)
 132     c[i] = a[i];
 133
 134 #pragma omp target
 135 #pragma omp teams
 136 // 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'}}
 137 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'i'}}
 138 #pragma omp distribute parallel for simd
 139   for (int i = 0; jj < kk; ii++)
 140     c[i] = a[i];
 141
 142 #pragma omp target
 143 #pragma omp teams
 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 distribute parallel for simd
 146   for (int i = 0; !!i; i++)
 147     c[i] = a[i];
 148
 149 #pragma omp target
 150 #pragma omp teams
 151 // omp4-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}}
 152 #pragma omp distribute parallel for simd
 153   for (int i = 0; i != 1; i++)
 154     c[i] = a[i];
 155
 156 #pragma omp target
 157 #pragma omp teams
 158 // 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'}}
 159 #pragma omp distribute parallel for simd
 160   for (int i = 0;; i++)
 161     c[i] = a[i];
 162
 163 // Ok.
 164 #pragma omp target
 165 #pragma omp teams
 166 #pragma omp distribute parallel for simd
 167   for (int i = 11; i > 10; i--)
 168     c[i] = a[i];
 169
 170 // Ok.
 171 #pragma omp target
 172 #pragma omp teams
 173 #pragma omp distribute parallel for simd
 174   for (int i = 0; i < 10; ++i)
 175     c[i] = a[i];
 176
 177 // Ok.
 178 #pragma omp target
 179 #pragma omp teams
 180 #pragma omp distribute parallel for simd
 181   for (ii = 0; ii < 10; ++ii)
 182     c[ii] = a[ii];
 183
 184 #pragma omp target
 185 #pragma omp teams
 186 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
 187 #pragma omp distribute parallel for simd
 188   for (ii = 0; ii < 10; ++jj)
 189     c[ii] = a[jj];
 190
 191 #pragma omp target
 192 #pragma omp teams
 193 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
 194 #pragma omp distribute parallel for simd
 195   for (ii = 0; ii < 10; ++++ii)
 196     c[ii] = a[ii];
 197
 198 // Ok but undefined behavior (in general, cannot check that incr
 199 // is really loop-invariant).
 200 #pragma omp target
 201 #pragma omp teams
 202 #pragma omp distribute parallel for simd
 203   for (ii = 0; ii < 10; ii = ii + ii)
 204     c[ii] = a[ii];
 205
 206 #pragma omp target
 207 #pragma omp teams
 208 // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'float'}}
 209 #pragma omp distribute parallel for simd
 210   for (ii = 0; ii < 10; ii = ii + 1.0f)
 211     c[ii] = a[ii];
 212
 213 // Ok - step was converted to integer type.
 214 #pragma omp target
 215 #pragma omp teams
 216 #pragma omp distribute parallel for simd
 217   for (ii = 0; ii < 10; ii = ii + (int)1.1f)
 218     c[ii] = a[ii];
 219
 220 #pragma omp target
 221 #pragma omp teams
 222 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
 223 #pragma omp distribute parallel for simd
 224   for (ii = 0; ii < 10; jj = ii + 2)
 225     c[ii] = a[ii];
 226
 227 #pragma omp target
 228 #pragma omp teams
 229 // expected-warning@+3 {{relational comparison result unused}}
 230 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
 231 #pragma omp distribute parallel for simd
 232   for (ii = 0; ii<10; jj> kk + 2)
 233     c[ii] = a[ii];
 234
 235 #pragma omp target
 236 #pragma omp teams
 237 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
 238 #pragma omp distribute parallel for simd
 239   for (ii = 0; ii < 10;)
 240     c[ii] = a[ii];
 241
 242 #pragma omp target
 243 #pragma omp teams
 244 // expected-warning@+3 {{expression result unused}}
 245 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
 246 #pragma omp distribute parallel for simd
 247   for (ii = 0; ii < 10; !ii)
 248     c[ii] = a[ii];
 249
 250 #pragma omp target
 251 #pragma omp teams
 252 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
 253 #pragma omp distribute parallel for simd
 254   for (ii = 0; ii < 10; ii ? ++ii : ++jj)
 255     c[ii] = a[ii];
 256
 257 #pragma omp target
 258 #pragma omp teams
 259 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
 260 #pragma omp distribute parallel for simd
 261   for (ii = 0; ii < 10; ii = ii < 10)
 262     c[ii] = a[ii];
 263
 264 #pragma omp target
 265 #pragma omp teams
 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 distribute parallel for simd
 269   for (ii = 0; ii < 10; ii = ii + 0)
 270     c[ii] = a[ii];
 271
 272 #pragma omp target
 273 #pragma omp teams
 274 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
 275 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
 276 #pragma omp distribute parallel for simd
 277   for (ii = 0; ii < 10; ii = ii + (int)(0.8 - 0.45))
 278     c[ii] = a[ii];
 279
 280 #pragma omp target
 281 #pragma omp teams
 282 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
 283 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
 284 #pragma omp distribute parallel for simd
 285   for (ii = 0; (ii) < 10; ii -= 25)
 286     c[ii] = a[ii];
 287
 288 #pragma omp target
 289 #pragma omp teams
 290 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
 291 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
 292 #pragma omp distribute parallel for simd
 293   for (ii = 0; (ii < 10); ii -= 0)
 294     c[ii] = a[ii];
 295
 296 #pragma omp target
 297 #pragma omp teams
 298 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
 299 // expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}}
 300 #pragma omp distribute parallel for simd
 301   for (ii = 0; ii > 10; (ii += 0))
 302     c[ii] = a[ii];
 303
 304 #pragma omp target
 305 #pragma omp teams
 306 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
 307 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
 308 #pragma omp distribute parallel for simd
 309   for (ii = 0; ii < 10; (ii) = (1 - 1) + (ii))
 310     c[ii] = a[ii];
 311
 312 #pragma omp target
 313 #pragma omp teams
 314 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
 315 // expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}}
 316 #pragma omp distribute parallel for simd
 317   for ((ii = 0); ii > 10; (ii -= 0))
 318     c[ii] = a[ii];
 319
 320 #pragma omp target
 321 #pragma omp teams
 322 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
 323 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
 324 #pragma omp distribute parallel for simd
 325   for (ii = 0; (ii < 10); (ii -= 0))
 326     c[ii] = a[ii];
 327
 328 #pragma omp target
 329 #pragma omp teams
 330 // expected-note@+2  {{defined as firstprivate}}
 331 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp distribute parallel for simd' directive may not be firstprivate, predetermined as linear}}
 332 #pragma omp distribute parallel for simd firstprivate(ii)
 333   for (ii = 0; ii < 10; ii++)
 334     c[ii] = a[ii];
 335
 336 #pragma omp target
 337 #pragma omp teams
 338 #pragma omp distribute parallel for simd linear(ii)
 339   for (ii = 0; ii < 10; ii++)
 340     c[ii] = a[ii];
 341
 342 #pragma omp target
 343 #pragma omp teams
 344 // omp4-note@+2 {{defined as private}}
 345 // omp4-error@+2 {{loop iteration variable in the associated loop of 'omp distribute parallel for simd' directive may not be private, predetermined as linear}}
 346 #pragma omp distribute parallel for simd private(ii)
 347   for (ii = 0; ii < 10; ii++)
 348     c[ii] = a[ii];
 349
 350 #pragma omp target
 351 #pragma omp teams
 352 // omp4-note@+2 {{defined as lastprivate}}
 353 // omp4-error@+2 {{loop iteration variable in the associated loop of 'omp distribute parallel for simd' directive may not be lastprivate, predetermined as linear}}
 354 #pragma omp distribute parallel for simd lastprivate(ii)
 355   for (ii = 0; ii < 10; ii++)
 356     c[ii] = a[ii];
 357
 358   {
 359 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp distribute parallel for simd' directive may not be threadprivate or thread local, predetermined as linear}}
 360 #pragma omp distribute parallel for simd
 361     for (sii = 0; sii < 10; sii += 1)
 362       c[sii] = a[sii];
 363   }
 364
 365   {
 366 #pragma omp distribute parallel for simd
 367     for (globalii = 0; globalii < 10; globalii += 1)
 368       c[globalii] = a[globalii];
 369   }
 370
 371   {
 372 #pragma omp target
 373 #pragma omp teams
 374 #pragma omp distribute parallel for simd collapse(2)
 375     for (ii = 0; ii < 10; ii += 1)
 376     for (globalii = 0; globalii < 10; globalii += 1)
 377       c[globalii] += a[globalii] + ii;
 378   }
 379
 380 #pragma omp target
 381 #pragma omp teams
 382 // omp4-error@+2 {{statement after '#pragma omp distribute parallel for simd' must be a for loop}}
 383 #pragma omp distribute parallel for simd
 384   for (auto &item : a) {
 385     item = item + 1;
 386   }
 387
 388 #pragma omp target
 389 #pragma omp teams
 390 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
 391 // expected-error@+2 {{increment expression must cause 'i' to increase on each iteration of OpenMP for loop}}
 392 #pragma omp distribute parallel for simd
 393   for (unsigned i = 9; i < 10; i--) {
 394     c[i] = a[i] + b[i];
 395   }
 396
 397   int(*lb)[4] = nullptr;
 398 #pragma omp target
 399 #pragma omp teams
 400 #pragma omp distribute parallel for simd
 401   for (int(*p)[4] = lb; p < lb + 8; ++p) {
 402   }
 403
 404 #pragma omp target
 405 #pragma omp teams
 406 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 407 #pragma omp distribute parallel for simd
 408   for (int a{0}; a < 10; ++a) {
 409   }
 410
 411   return 0;
 412 }
 413
 414 // Iterators allowed in openmp for-loops.
 415 namespace std {
 416 struct random_access_iterator_tag {};
 417 template <class Iter>
 418 struct iterator_traits {
 419   typedef typename Iter::difference_type difference_type;
 420   typedef typename Iter::iterator_category iterator_category;
 421 };
 422 template <class Iter>
 423 typename iterator_traits<Iter>::difference_type
 424 distance(Iter first, Iter last) { return first - last; }
 425 }
 426 class Iter0 {
 427 public:
 428   Iter0() {}
 429   Iter0(const Iter0 &) {}
 430   Iter0 operator++() { return *this; }
 431   Iter0 operator--() { return *this; }
 432   bool operator<(Iter0 a) { return true; }
 433 };
 434 // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'Iter0' for 1st argument}}
 435 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'Iter0' for 1st argument}}
 436 int operator-(Iter0 a, Iter0 b) { return 0; }
 437 class Iter1 {
 438 public:
 439   Iter1(float f = 0.0f, double d = 0.0) {}
 440   Iter1(const Iter1 &) {}
 441   Iter1 operator++() { return *this; }
 442   Iter1 operator--() { return *this; }
 443   bool operator<(Iter1 a) { return true; }
 444   bool operator>=(Iter1 a) { return false; }
 445 };
 446 class GoodIter {
 447 public:
 448   GoodIter() {}
 449   GoodIter(const GoodIter &) {}
 450   GoodIter(int fst, int snd) {}
 451   GoodIter &operator=(const GoodIter &that) { return *this; }
 452   GoodIter &operator=(const Iter0 &that) { return *this; }
 453   GoodIter &operator+=(int x) { return *this; }
 454   explicit GoodIter(void *) {}
 455   GoodIter operator++() { return *this; }
 456   GoodIter operator--() { return *this; }
 457   bool operator!() { return true; }
 458   bool operator<(GoodIter a) { return true; }
 459   bool operator<=(GoodIter a) { return true; }
 460   bool operator>=(GoodIter a) { return false; }
 461   typedef int difference_type;
 462   typedef std::random_access_iterator_tag iterator_category;
 463 };
 464 // expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'GoodIter' for 2nd argument}}
 465 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}}
 466 int operator-(GoodIter a, GoodIter b) { return 0; }
 467 // expected-note@+1 3 {{candidate function not viable: requires single argument 'a', but 2 arguments were provided}}
 468 GoodIter operator-(GoodIter a) { return a; }
 469 // expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'int' for 2nd argument}}
 470 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}}
 471 GoodIter operator-(GoodIter a, int v) { return GoodIter(); }
 472 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'GoodIter' for 1st argument}}
 473 GoodIter operator+(GoodIter a, int v) { return GoodIter(); }
 474 // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'int' for 1st argument}}
 475 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'int' for 1st argument}}
 476 GoodIter operator-(int v, GoodIter a) { return GoodIter(); }
 477 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'int' for 1st argument}}
 478 GoodIter operator+(int v, GoodIter a) { return GoodIter(); }
 479
 480 int test_with_random_access_iterator() {
 481   GoodIter begin, end;
 482   Iter0 begin0, end0;
 483 #pragma omp target
 484 #pragma omp teams
 485 #pragma omp distribute parallel for simd
 486   for (GoodIter I = begin; I < end; ++I)
 487     ++I;
 488 #pragma omp target
 489 #pragma omp teams
 490 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 491 #pragma omp distribute parallel for simd
 492   for (GoodIter &I = begin; I < end; ++I)
 493     ++I;
 494 #pragma omp target
 495 #pragma omp teams
 496 #pragma omp distribute parallel for simd
 497   for (GoodIter I = begin; I >= end; --I)
 498     ++I;
 499 #pragma omp target
 500 #pragma omp teams
 501 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 502 #pragma omp distribute parallel for simd
 503   for (GoodIter I(begin); I < end; ++I)
 504     ++I;
 505 #pragma omp target
 506 #pragma omp teams
 507 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 508 #pragma omp distribute parallel for simd
 509   for (GoodIter I(nullptr); I < end; ++I)
 510     ++I;
 511 #pragma omp target
 512 #pragma omp teams
 513 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 514 #pragma omp distribute parallel for simd
 515   for (GoodIter I(0); I < end; ++I)
 516     ++I;
 517 #pragma omp target
 518 #pragma omp teams
 519 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 520 #pragma omp distribute parallel for simd
 521   for (GoodIter I(1, 2); I < end; ++I)
 522     ++I;
 523 #pragma omp target
 524 #pragma omp teams
 525 #pragma omp distribute parallel for simd
 526   for (begin = GoodIter(0); begin < end; ++begin)
 527     ++begin;
 528 #pragma omp target
 529 #pragma omp teams
 530 // expected-error@+3 {{invalid operands to binary expression ('GoodIter' and 'const Iter0')}}
 531 // expected-error@+2 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
 532 #pragma omp distribute parallel for simd
 533   for (begin = begin0; begin < end; ++begin)
 534     ++begin;
 535 #pragma omp target
 536 #pragma omp teams
 537 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 538 #pragma omp distribute parallel for simd
 539   for (++begin; begin < end; ++begin)
 540     ++begin;
 541 #pragma omp target
 542 #pragma omp teams
 543 #pragma omp distribute parallel for simd
 544   for (begin = end; begin < end; ++begin)
 545     ++begin;
 546 #pragma omp target
 547 #pragma omp teams
 548 // 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'}}
 549 #pragma omp distribute parallel for simd
 550   for (GoodIter I = begin; I - I; ++I)
 551     ++I;
 552 #pragma omp target
 553 #pragma omp teams
 554 // 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'}}
 555 #pragma omp distribute parallel for simd
 556   for (GoodIter I = begin; begin < end; ++I)
 557     ++I;
 558 #pragma omp target
 559 #pragma omp teams
 560 // 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'}}
 561 #pragma omp distribute parallel for simd
 562   for (GoodIter I = begin; !I; ++I)
 563     ++I;
 564 #pragma omp target
 565 #pragma omp teams
 566 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
 567 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
 568 #pragma omp distribute parallel for simd
 569   for (GoodIter I = begin; I >= end; I = I + 1)
 570     ++I;
 571 #pragma omp target
 572 #pragma omp teams
 573 #pragma omp distribute parallel for simd
 574   for (GoodIter I = begin; I >= end; I = I - 1)
 575     ++I;
 576 #pragma omp target
 577 #pragma omp teams
 578 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}}
 579 #pragma omp distribute parallel for simd
 580   for (GoodIter I = begin; I >= end; I = -I)
 581     ++I;
 582 #pragma omp target
 583 #pragma omp teams
 584 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
 585 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
 586 #pragma omp distribute parallel for simd
 587   for (GoodIter I = begin; I >= end; I = 2 + I)
 588     ++I;
 589 #pragma omp target
 590 #pragma omp teams
 591 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}}
 592 #pragma omp distribute parallel for simd
 593   for (GoodIter I = begin; I >= end; I = 2 - I)
 594     ++I;
 595 #pragma omp target
 596 #pragma omp teams
 597 // expected-error@+2 {{invalid operands to binary expression ('Iter0' and 'int')}}
 598 #pragma omp distribute parallel for simd
 599   for (Iter0 I = begin0; I < end0; ++I)
 600     ++I;
 601 #pragma omp target
 602 #pragma omp teams
 603 // Initializer is constructor without params.
 604 // expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}}
 605 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 606 #pragma omp distribute parallel for simd
 607   for (Iter0 I; I < end0; ++I)
 608     ++I;
 609   Iter1 begin1, end1;
 610 #pragma omp target
 611 #pragma omp teams
 612 // expected-error@+3 {{invalid operands to binary expression ('Iter1' and 'Iter1')}}
 613 // expected-error@+2 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
 614 #pragma omp distribute parallel for simd
 615   for (Iter1 I = begin1; I < end1; ++I)
 616     ++I;
 617 #pragma omp target
 618 #pragma omp teams
 619 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
 620 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
 621 #pragma omp distribute parallel for simd
 622   for (Iter1 I = begin1; I >= end1; ++I)
 623     ++I;
 624 #pragma omp target
 625 #pragma omp teams
 626 // expected-error@+5 {{invalid operands to binary expression ('Iter1' and 'float')}}
 627 // expected-error@+4 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
 628 // Initializer is constructor with all default params.
 629 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 630 #pragma omp distribute parallel for simd
 631   for (Iter1 I; I < end1; ++I) {
 632   }
 633   return 0;
 634 }
 635
 636 template <typename IT, int ST>
 637 class TC {
 638 public:
 639   int dotest_lt(IT begin, IT end) {
 640 #pragma omp target
 641 #pragma omp teams
 642 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
 643 // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}}
 644 #pragma omp distribute parallel for simd
 645     for (IT I = begin; I < end; I = I + ST) {
 646       ++I;
 647     }
 648 #pragma omp target
 649 #pragma omp teams
 650 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
 651 // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}}
 652 #pragma omp distribute parallel for simd
 653     for (IT I = begin; I <= end; I += ST) {
 654       ++I;
 655     }
 656 #pragma omp target
 657 #pragma omp teams
 658 #pragma omp distribute parallel for simd
 659     for (IT I = begin; I < end; ++I) {
 660       ++I;
 661     }
 662   }
 663
 664   static IT step() {
 665     return IT(ST);
 666   }
 667 };
 668 template <typename IT, int ST = 0>
 669 int dotest_gt(IT begin, IT end) {
 670 #pragma omp target
 671 #pragma omp teams
 672 // expected-note@+3 2 {{loop step is expected to be negative due to this condition}}
 673 // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
 674 #pragma omp distribute parallel for simd
 675   for (IT I = begin; I >= end; I = I + ST) {
 676     ++I;
 677   }
 678 #pragma omp target
 679 #pragma omp teams
 680 // expected-note@+3 2 {{loop step is expected to be negative due to this condition}}
 681 // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
 682 #pragma omp distribute parallel for simd
 683   for (IT I = begin; I >= end; I += ST) {
 684     ++I;
 685   }
 686
 687 #pragma omp target
 688 #pragma omp teams
 689 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
 690 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
 691 #pragma omp distribute parallel for simd
 692   for (IT I = begin; I >= end; ++I) {
 693     ++I;
 694   }
 695
 696 #pragma omp distribute parallel for simd
 697   for (IT I = begin; I < end; I += TC<int, ST>::step()) {
 698     ++I;
 699   }
 700 }
 701
 702 void test_with_template() {
 703   GoodIter begin, end;
 704   TC<GoodIter, 100> t1;
 705   TC<GoodIter, -100> t2;
 706   t1.dotest_lt(begin, end);
 707   t2.dotest_lt(begin, end);         // expected-note {{in instantiation of member function 'TC<GoodIter, -100>::dotest_lt' requested here}}
 708   dotest_gt(begin, end);            // expected-note {{in instantiation of function template specialization 'dotest_gt<GoodIter, 0>' requested here}}
 709   dotest_gt<unsigned, 10>(0, 100);  // expected-note {{in instantiation of function template specialization 'dotest_gt<unsigned int, 10>' requested here}}
 710 }
 711
 712 void test_loop_break() {
 713   const int N = 100;
 714   float a[N], b[N], c[N];
 715 #pragma omp target
 716 #pragma omp teams
 717 #pragma omp distribute parallel for simd
 718   for (int i = 0; i < 10; i++) {
 719     c[i] = a[i] + b[i];
 720     for (int j = 0; j < 10; ++j) {
 721       if (a[i] > b[j])
 722         break; // OK in nested loop
 723     }
 724     switch (i) {
 725     case 1:
 726       b[i]++;
 727       break;
 728     default:
 729       break;
 730     }
 731     if (c[i] > 10)
 732       break; // expected-error {{'break' statement cannot be used in OpenMP for loop}}
 733
 734     if (c[i] > 11)
 735       break; // expected-error {{'break' statement cannot be used in OpenMP for loop}}
 736   }
 737
 738 #pragma omp target
 739 #pragma omp teams
 740 #pragma omp distribute parallel for simd
 741   for (int i = 0; i < 10; i++) {
 742     for (int j = 0; j < 10; j++) {
 743       c[i] = a[i] + b[i];
 744       if (c[i] > 10) {
 745         if (c[i] < 20) {
 746           break; // OK
 747         }
 748       }
 749     }
 750   }
 751 }
 752
 753 void test_loop_eh() {
 754   const int N = 100;
 755   float a[N], b[N], c[N];
 756 #pragma omp target
 757 #pragma omp teams
 758 #pragma omp distribute parallel for simd
 759   for (int i = 0; i < 10; i++) {
 760     c[i] = a[i] + b[i];
 761     try { // expected-error {{'try' statement cannot be used in OpenMP simd region}}
 762       for (int j = 0; j < 10; ++j) {
 763         if (a[i] > b[j])
 764           throw a[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}}
 765       }
 766       throw a[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}}
 767     } catch (float f) {
 768       if (f > 0.1)
 769         throw a[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}}
 770       return; // expected-error {{cannot return from OpenMP region}}
 771     }
 772     switch (i) {
 773     case 1:
 774       b[i]++;
 775       break;
 776     default:
 777       break;
 778     }
 779     for (int j = 0; j < 10; j++) {
 780       if (c[i] > 10)
 781         throw c[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}}
 782     }
 783   }
 784   if (c[9] > 10)
 785     throw c[9]; // OK
 786
 787 #pragma omp distribute parallel for simd
 788   for (int i = 0; i < 10; ++i) {
 789     struct S {
 790       void g() { throw 0; }
 791     };
 792   }
 793 }
 794
 795 void test_loop_firstprivate_lastprivate() {
 796   S s(4);
 797 // expected-error@+3 {{lastprivate variable cannot be firstprivate}} expected-note@+3 {{defined as lastprivate}}
 798 #pragma omp target
 799 #pragma omp teams
 800 #pragma omp distribute parallel for simd lastprivate(s) firstprivate(s) // expected-error {{calling a private constructor of class 'S'}}
 801   for (int i = 0; i < 16; ++i)
 802     ;
 803 }
 804
 805 void test_ordered() {
 806 #pragma omp target
 807 #pragma omp teams
 808 #pragma omp distribute parallel for simd ordered // expected-error {{unexpected OpenMP clause 'ordered' in directive '#pragma omp distribute parallel for simd'}}
 809   for (int i = 0; i < 16; ++i)
 810     ;
 811 }
 812
 813 void test_nowait() {
 814 #pragma omp target
 815 #pragma omp teams
 816 // expected-error@+1 2 {{unexpected OpenMP clause 'nowait' in directive '#pragma omp distribute parallel for simd'}}
 817 #pragma omp distribute parallel for simd nowait nowait // expected-error {{directive '#pragma omp distribute parallel for simd' cannot contain more than one 'nowait' clause}}
 818   for (int i = 0; i < 16; ++i)
 819     ;
 820 }
 821