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