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