clang/test/OpenMP/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 -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 simd
  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 simd
  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 simd
  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 simd
  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 simd
  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 simd
  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 simd
  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 simd
  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 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 &ref = ii; ref < 10; ref++) {
  74   }
  75 #pragma omp target
  76 #pragma omp 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 (int i; i < 10; i++)
  79     c[i] = a[i];
  80
  81 #pragma omp target
  82 #pragma omp teams distribute simd
  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 simd
  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 simd
  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 simd
 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 simd
 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 simd
 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 simd
 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 simd
 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 simd
 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 simd
 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 simd
 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 simd
 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 simd
 158   for (ii = 0; ii < 10; ++ii)
 159     c[ii] = a[ii];
 160
 161 #pragma omp target
 162 #pragma omp teams distribute simd
 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 simd
 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 simd
 177   for (ii = 0; ii < 10; ii = ii + ii)
 178     c[ii] = a[ii];
 179
 180 #pragma omp target
 181 #pragma omp teams distribute simd
 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 simd
 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 simd
 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 simd
 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 simd
 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 simd
 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 simd
 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 simd
 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 simd
 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 simd
 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 simd
 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 simd
 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 simd
 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 simd
 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 simd
 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 simd
 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 simd firstprivate(ii) // expected-note {{defined as firstprivate}}
 288 // expected-error@+1 {{loop iteration variable in the associated loop of 'omp teams distribute simd' directive may not be firstprivate, predetermined as linear}}
 289   for (ii = 0; ii < 10; ii++)
 290     c[ii] = a[ii];
 291
 292 #pragma omp target
 293 #pragma omp teams distribute simd private(ii) // omp4-note {{defined as private}}
 294 // omp4-error@+1 {{loop iteration variable in the associated loop of 'omp teams distribute simd' directive may not be private, predetermined as linear}}
 295   for (ii = 0; ii < 10; ii++)
 296     c[ii] = a[ii];
 297
 298 #pragma omp target
 299 #pragma omp teams distribute simd lastprivate(ii) // omp4-note {{defined as lastprivate}}
 300 // omp4-error@+1 {{loop iteration variable in the associated loop of 'omp teams distribute simd' directive may not be lastprivate, predetermined as linear}}
 301   for (ii = 0; ii < 10; ii++)
 302     c[ii] = a[ii];
 303
 304 #pragma omp target
 305 #pragma omp teams distribute simd
 306 // expected-error@+1 {{loop iteration variable in the associated loop of 'omp teams distribute simd' directive may not be threadprivate or thread local, predetermined as linear}}
 307   for (sii = 0; sii < 10; sii++)
 308     c[sii] = a[sii];
 309
 310   {
 311 #pragma omp target
 312 #pragma omp teams distribute simd collapse(2)
 313   for (ii = 0; ii < 10; ii += 1)
 314     for (globalii = 0; globalii < 10; globalii += 1)
 315       c[globalii] += a[globalii] + ii;
 316   }
 317
 318 #pragma omp target
 319 #pragma omp teams distribute simd
 320 // omp4-error@+1 {{statement after '#pragma omp teams distribute simd' must be a for loop}}
 321   for (auto &item : a) {
 322     item = item + 1;
 323   }
 324
 325 #pragma omp target
 326 #pragma omp teams distribute simd
 327 // expected-note@+2 {{loop step is expected to be positive due to this condition}}
 328 // expected-error@+1 {{increment expression must cause 'i' to increase on each iteration of OpenMP for loop}}
 329   for (unsigned i = 9; i < 10; i--) {
 330     c[i] = a[i] + b[i];
 331   }
 332
 333   int(*lb)[4] = nullptr;
 334 #pragma omp target
 335 #pragma omp teams distribute simd
 336   for (int(*p)[4] = lb; p < lb + 8; ++p) {
 337   }
 338
 339 #pragma omp target
 340 #pragma omp teams distribute simd
 341 // expected-warning@+1 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 342   for (int a{0}; a < 10; ++a) {
 343   }
 344
 345   return 0;
 346 }
 347
 348 // Iterators allowed in openmp for-loops.
 349 namespace std {
 350 struct random_access_iterator_tag {};
 351 template <class Iter>
 352 struct iterator_traits {
 353   typedef typename Iter::difference_type difference_type;
 354   typedef typename Iter::iterator_category iterator_category;
 355 };
 356 template <class Iter>
 357 typename iterator_traits<Iter>::difference_type
 358 distance(Iter first, Iter last) { return first - last; }
 359 }
 360 class Iter0 {
 361 public:
 362   Iter0() {}
 363   Iter0(const Iter0 &) {}
 364   Iter0 operator++() { return *this; }
 365   Iter0 operator--() { return *this; }
 366   bool operator<(Iter0 a) { return true; }
 367 };
 368 // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'Iter0' for 1st argument}}
 369 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'Iter0' for 1st argument}}
 370 int operator-(Iter0 a, Iter0 b) { return 0; }
 371 class Iter1 {
 372 public:
 373   Iter1(float f = 0.0f, double d = 0.0) {}
 374   Iter1(const Iter1 &) {}
 375   Iter1 operator++() { return *this; }
 376   Iter1 operator--() { return *this; }
 377   bool operator<(Iter1 a) { return true; }
 378   bool operator>=(Iter1 a) { return false; }
 379 };
 380 class GoodIter {
 381 public:
 382   GoodIter() {}
 383   GoodIter(const GoodIter &) {}
 384   GoodIter(int fst, int snd) {}
 385   GoodIter &operator=(const GoodIter &that) { return *this; }
 386   GoodIter &operator=(const Iter0 &that) { return *this; }
 387   GoodIter &operator+=(int x) { return *this; }
 388   explicit GoodIter(void *) {}
 389   GoodIter operator++() { return *this; }
 390   GoodIter operator--() { return *this; }
 391   bool operator!() { return true; }
 392   bool operator<(GoodIter a) { return true; }
 393   bool operator<=(GoodIter a) { return true; }
 394   bool operator>=(GoodIter a) { return false; }
 395   typedef int difference_type;
 396   typedef std::random_access_iterator_tag iterator_category;
 397 };
 398 // expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'GoodIter' for 2nd argument}}
 399 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}}
 400 int operator-(GoodIter a, GoodIter b) { return 0; }
 401 // expected-note@+1 3 {{candidate function not viable: requires single argument 'a', but 2 arguments were provided}}
 402 GoodIter operator-(GoodIter a) { return a; }
 403 // expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'int' for 2nd argument}}
 404 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}}
 405 GoodIter operator-(GoodIter a, int v) { return GoodIter(); }
 406 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'GoodIter' for 1st argument}}
 407 GoodIter operator+(GoodIter a, int v) { return GoodIter(); }
 408 // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'int' for 1st argument}}
 409 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'int' for 1st argument}}
 410 GoodIter operator-(int v, GoodIter a) { return GoodIter(); }
 411 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'int' for 1st argument}}
 412 GoodIter operator+(int v, GoodIter a) { return GoodIter(); }
 413
 414 int test_with_random_access_iterator() {
 415   GoodIter begin, end;
 416   Iter0 begin0, end0;
 417 #pragma omp target
 418 #pragma omp teams distribute simd
 419   for (GoodIter I = begin; I < end; ++I) // expected-warning 2 {{Type 'GoodIter' is not trivially copyable and not guaranteed to be mapped correctly}}
 420     ++I;
 421 #pragma omp target
 422 #pragma omp teams distribute simd
 423 // expected-error@+1 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 424   for (GoodIter &I = begin; I < end; ++I)
 425     ++I;
 426 #pragma omp target
 427 #pragma omp teams distribute simd
 428   for (GoodIter I = begin; I >= end; --I) // expected-warning 2 {{Type 'GoodIter' is not trivially copyable and not guaranteed to be mapped correctly}}
 429     ++I;
 430 #pragma omp target
 431 #pragma omp teams distribute simd
 432 // expected-warning@+1 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 433   for (GoodIter I(begin); I < end; ++I) // expected-warning 2 {{Type 'GoodIter' is not trivially copyable and not guaranteed to be mapped correctly}}
 434     ++I;
 435 #pragma omp target
 436 #pragma omp teams distribute simd
 437 // expected-warning@+1 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 438   for (GoodIter I(nullptr); I < end; ++I) // expected-warning {{Type 'GoodIter' is not trivially copyable and not guaranteed to be mapped correctly}}
 439     ++I;
 440 #pragma omp target
 441 #pragma omp teams distribute simd
 442 // expected-warning@+1 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 443   for (GoodIter I(0); I < end; ++I) // expected-warning {{Type 'GoodIter' is not trivially copyable and not guaranteed to be mapped correctly}}
 444     ++I;
 445 #pragma omp target
 446 #pragma omp teams distribute simd
 447 // expected-warning@+1 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 448   for (GoodIter I(1, 2); I < end; ++I) // expected-warning {{Type 'GoodIter' is not trivially copyable and not guaranteed to be mapped correctly}}
 449     ++I;
 450 #pragma omp target
 451 #pragma omp teams distribute simd
 452   for (begin = GoodIter(0); begin < end; ++begin) // expected-warning 2 {{Type 'GoodIter' is not trivially copyable and not guaranteed to be mapped correctly}}
 453     ++begin;
 454 #pragma omp target
 455 #pragma omp teams distribute simd
 456 // expected-error@+2 {{invalid operands to binary expression ('GoodIter' and 'const Iter0')}}
 457 // expected-error@+1 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
 458   for (begin = begin0; begin < end; ++begin)
 459     ++begin;
 460 #pragma omp target
 461 #pragma omp teams distribute simd
 462 // expected-error@+1 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 463   for (++begin; begin < end; ++begin)
 464     ++begin;
 465 #pragma omp target
 466 #pragma omp teams distribute simd
 467   for (begin = end; begin < end; ++begin) // expected-warning 2 {{Type 'GoodIter' is not trivially copyable and not guaranteed to be mapped correctly}}
 468     ++begin;
 469 #pragma omp target
 470 #pragma omp teams distribute simd
 471 // 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'}}
 472   for (GoodIter I = begin; I - I; ++I)
 473     ++I;
 474 #pragma omp target
 475 #pragma omp teams distribute simd
 476 // 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'}}
 477   for (GoodIter I = begin; begin < end; ++I)
 478     ++I;
 479 #pragma omp target
 480 #pragma omp teams distribute simd
 481 // 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'}}
 482   for (GoodIter I = begin; !I; ++I)
 483     ++I;
 484 #pragma omp target
 485 #pragma omp teams distribute simd
 486 // expected-note@+2 {{loop step is expected to be negative due to this condition}}
 487 // expected-error@+1 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
 488   for (GoodIter I = begin; I >= end; I = I + 1)
 489     ++I;
 490 #pragma omp target
 491 #pragma omp teams distribute simd
 492   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}}
 493     ++I;
 494 #pragma omp target
 495 #pragma omp teams distribute simd
 496 // expected-error@+1 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}}
 497   for (GoodIter I = begin; I >= end; I = -I)
 498     ++I;
 499 #pragma omp target
 500 #pragma omp teams distribute simd
 501 // expected-note@+2 {{loop step is expected to be negative due to this condition}}
 502 // expected-error@+1 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
 503   for (GoodIter I = begin; I >= end; I = 2 + I)
 504     ++I;
 505 #pragma omp target
 506 #pragma omp teams distribute simd
 507 // expected-error@+1 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}}
 508   for (GoodIter I = begin; I >= end; I = 2 - I)
 509     ++I;
 510 #pragma omp target
 511 #pragma omp teams distribute simd
 512 // expected-error@+1 {{invalid operands to binary expression ('Iter0' and 'int')}}
 513   for (Iter0 I = begin0; I < end0; ++I)
 514     ++I;
 515 #pragma omp target
 516 #pragma omp teams distribute simd
 517 // Initializer is constructor without params.
 518 // expected-error@+2 {{invalid operands to binary expression ('Iter0' and 'int')}}
 519 // expected-warning@+1 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 520   for (Iter0 I; I < end0; ++I)
 521     ++I;
 522   Iter1 begin1, end1;
 523 #pragma omp target
 524 #pragma omp teams distribute simd
 525 // expected-error@+2 {{invalid operands to binary expression ('Iter1' and 'Iter1')}}
 526 // expected-error@+1 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
 527   for (Iter1 I = begin1; I < end1; ++I)
 528     ++I;
 529 #pragma omp target
 530 #pragma omp teams distribute simd
 531 // expected-note@+2 {{loop step is expected to be negative due to this condition}}
 532 // expected-error@+1 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
 533   for (Iter1 I = begin1; I >= end1; ++I)
 534     ++I;
 535 #pragma omp target
 536 #pragma omp teams distribute simd
 537 // expected-error@+4 {{invalid operands to binary expression ('Iter1' and 'float')}}
 538 // expected-error@+3 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
 539 // Initializer is constructor with all default params.
 540 // expected-warning@+1 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 541   for (Iter1 I; I < end1; ++I) {
 542   }
 543   return 0;
 544 }
 545
 546 template <typename IT, int ST>
 547 class TC {
 548 public:
 549   int dotest_lt(IT begin, IT end) {
 550 #pragma omp target
 551 #pragma omp teams distribute simd
 552 // expected-note@+2 {{loop step is expected to be positive due to this condition}}
 553 // expected-error@+1 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}}
 554     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}}
 555       ++I;
 556     }
 557 #pragma omp target
 558 #pragma omp teams distribute simd
 559 // expected-note@+2 {{loop step is expected to be positive due to this condition}}
 560 // expected-error@+1 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}}
 561     for (IT I = begin; I <= end; I += ST) { // expected-warning 2 {{Type 'GoodIter' is not trivially copyable and not guaranteed to be mapped correctly}}
 562       ++I;
 563     }
 564 #pragma omp target
 565 #pragma omp teams distribute simd
 566     for (IT I = begin; I < end; ++I) { // expected-warning 4 {{Type 'GoodIter' is not trivially copyable and not guaranteed to be mapped correctly}}
 567       ++I;
 568     }
 569   }
 570
 571   static IT step() {
 572     return IT(ST);
 573   }
 574 };
 575 template <typename IT, int ST = 0>
 576 int dotest_gt(IT begin, IT end) {
 577 #pragma omp target
 578 #pragma omp teams distribute simd
 579 // expected-note@+2 2 {{loop step is expected to be negative due to this condition}}
 580 // expected-error@+1 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
 581   for (IT I = begin; I >= end; I = I + ST) {
 582     ++I;
 583   }
 584 #pragma omp target
 585 #pragma omp teams distribute simd
 586 // expected-note@+2 2 {{loop step is expected to be negative due to this condition}}
 587 // expected-error@+1 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
 588   for (IT I = begin; I >= end; I += ST) {
 589     ++I;
 590   }
 591
 592 #pragma omp target
 593 #pragma omp teams distribute simd
 594 // expected-note@+2 {{loop step is expected to be negative due to this condition}}
 595 // expected-error@+1 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
 596   for (IT I = begin; I >= end; ++I) {
 597     ++I;
 598   }
 599
 600 #pragma omp target
 601 #pragma omp teams distribute simd
 602   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}}
 603     ++I;
 604   }
 605 }
 606
 607 void test_with_template() {
 608   GoodIter begin, end;
 609   TC<GoodIter, 100> t1;
 610   TC<GoodIter, -100> t2;
 611   t1.dotest_lt(begin, end);         // expected-note {{in instantiation of member function 'TC<GoodIter, 100>::dotest_lt' requested here}}
 612   t2.dotest_lt(begin, end);         // expected-note {{in instantiation of member function 'TC<GoodIter, -100>::dotest_lt' requested here}}
 613   dotest_gt(begin, end);            // expected-note {{in instantiation of function template specialization 'dotest_gt<GoodIter, 0>' requested here}}
 614   dotest_gt<unsigned, 10>(0, 100);  // expected-note {{in instantiation of function template specialization 'dotest_gt<unsigned int, 10>' requested here}}
 615 }
 616
 617 void test_loop_break() {
 618   const int N = 100;
 619   float a[N], b[N], c[N];
 620 #pragma omp target
 621 #pragma omp teams distribute simd
 622   for (int i = 0; i < 10; i++) {
 623     c[i] = a[i] + b[i];
 624     for (int j = 0; j < 10; ++j) {
 625       if (a[i] > b[j])
 626         break; // OK in nested loop
 627     }
 628     switch (i) {
 629     case 1:
 630       b[i]++;
 631       break;
 632     default:
 633       break;
 634     }
 635     if (c[i] > 10)
 636       break; // expected-error {{'break' statement cannot be used in OpenMP for loop}}
 637
 638     if (c[i] > 11)
 639       break; // expected-error {{'break' statement cannot be used in OpenMP for loop}}
 640   }
 641
 642 #pragma omp target
 643 #pragma omp teams distribute simd
 644   for (int i = 0; i < 10; i++) {
 645     for (int j = 0; j < 10; j++) {
 646       c[i] = a[i] + b[i];
 647       if (c[i] > 10) {
 648         if (c[i] < 20) {
 649           break; // OK
 650         }
 651       }
 652     }
 653   }
 654 }
 655
 656 void test_loop_eh() {
 657   const int N = 100;
 658   float a[N], b[N], c[N];
 659 #pragma omp target
 660 #pragma omp teams distribute simd
 661   for (int i = 0; i < 10; i++) {
 662     c[i] = a[i] + b[i];
 663     try { // expected-error {{'try' statement cannot be used in OpenMP simd region}}
 664       for (int j = 0; j < 10; ++j) {
 665         if (a[i] > b[j])
 666           throw a[i]; // expected-error {{throw' statement cannot be used in OpenMP simd region}}
 667       }
 668       throw a[i]; // expected-error {{throw' statement cannot be used in OpenMP simd region}}
 669     } catch (float f) {
 670       if (f > 0.1)
 671         throw a[i]; // expected-error {{throw' statement cannot be used in OpenMP simd region}}
 672       return; // expected-error {{cannot return from OpenMP region}}
 673     }
 674     switch (i) {
 675     case 1:
 676       b[i]++;
 677       break;
 678     default:
 679       break;
 680     }
 681     for (int j = 0; j < 10; j++) {
 682       if (c[i] > 10)
 683         throw c[i]; // expected-error {{throw' statement cannot be used in OpenMP simd region}}
 684     }
 685   }
 686   if (c[9] > 10)
 687     throw c[9]; // OK
 688
 689 #pragma omp target
 690 #pragma omp teams distribute simd
 691   for (int i = 0; i < 10; ++i) {
 692     struct S {
 693       void g() { throw 0; }
 694     };
 695   }
 696 }
 697
 698 void test_loop_firstprivate_lastprivate() {
 699   S s(4);
 700 // expected-error@+2 {{lastprivate variable cannot be firstprivate}} expected-note@+2 {{defined as lastprivate}}
 701 #pragma omp target
 702 #pragma omp teams distribute simd 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}}
 703   for (int i = 0; i < 16; ++i)
 704     ;
 705 }
 706
 707 void test_ordered() {
 708 #pragma omp target
 709 #pragma omp teams distribute simd ordered // expected-error {{unexpected OpenMP clause 'ordered' in directive '#pragma omp teams distribute simd'}}
 710   for (int i = 0; i < 16; ++i)
 711     ;
 712 }
 713
 714 void test_nowait() {
 715 #pragma omp target
 716 // expected-error@+1 2 {{unexpected OpenMP clause 'nowait' in directive '#pragma omp teams distribute simd'}}
 717 #pragma omp teams distribute simd nowait nowait // expected-error {{directive '#pragma omp teams distribute simd' cannot contain more than one 'nowait' clause}}
 718   for (int i = 0; i < 16; ++i)
 719     ;
 720 }
 721