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