clang/test/OpenMP/masked_taskloop_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) {}
  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 // Currently, we cannot use "0" for global register variables.
  22 // register int reg0 __asm__("0");
  23 int reg0;
  24
  25 int test_iteration_spaces() {
  26   const int N = 100;
  27   float a[N], b[N], c[N];
  28   int ii, jj, kk;
  29   float fii;
  30   double dii;
  31   int tid = 0;
  32   register int reg; // expected-warning {{'register' storage class specifier is deprecated}}
  33 #pragma omp parallel
  34 #pragma omp masked taskloop simd filter(tid)
  35   for (int i = 0; i < 10; i += 1) {
  36     c[i] = a[i] + b[i];
  37   }
  38 #pragma omp parallel
  39 #pragma omp masked taskloop simd
  40   for (char i = 0; i < 10; i++) {
  41     c[i] = a[i] + b[i];
  42   }
  43 #pragma omp parallel
  44 #pragma omp masked taskloop simd
  45   for (char i = 0; i < 10; i += '\1') {
  46     c[i] = a[i] + b[i];
  47   }
  48 #pragma omp parallel
  49 #pragma omp masked taskloop simd
  50   for (long long i = 0; i < 10; i++) {
  51     c[i] = a[i] + b[i];
  52   }
  53 #pragma omp parallel
  54 // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'double'}}
  55 #pragma omp masked taskloop simd
  56   for (long long i = 0; i < 10; i += 1.5) {
  57     c[i] = a[i] + b[i];
  58   }
  59 #pragma omp parallel
  60 #pragma omp masked taskloop simd
  61   for (long long i = 0; i < 'z'; i += 1u) {
  62     c[i] = a[i] + b[i];
  63   }
  64 #pragma omp parallel
  65 // expected-error@+2 {{variable must be of integer or random access iterator type}}
  66 #pragma omp masked taskloop simd
  67   for (float fi = 0; fi < 10.0; fi++) {
  68     c[(int)fi] = a[(int)fi] + b[(int)fi];
  69   }
  70 #pragma omp parallel
  71 // expected-error@+2 {{variable must be of integer or random access iterator type}}
  72 #pragma omp masked taskloop simd
  73   for (double fi = 0; fi < 10.0; fi++) {
  74     c[(int)fi] = a[(int)fi] + b[(int)fi];
  75   }
  76 #pragma omp parallel
  77 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  78 #pragma omp masked taskloop simd
  79   for (int &ref = ii; ref < 10; ref++) {
  80   }
  81 #pragma omp parallel
  82 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  83 #pragma omp masked taskloop simd
  84   for (int i; i < 10; i++)
  85     c[i] = a[i];
  86
  87 #pragma omp parallel
  88 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  89 #pragma omp masked taskloop simd
  90   for (int i = 0, j = 0; i < 10; ++i)
  91     c[i] = a[i];
  92
  93 #pragma omp parallel
  94 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  95 #pragma omp masked taskloop simd
  96   for (; ii < 10; ++ii)
  97     c[ii] = a[ii];
  98
  99 #pragma omp parallel
 100 // expected-warning@+3 {{expression result unused}}
 101 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 102 #pragma omp masked taskloop simd
 103   for (ii + 1; ii < 10; ++ii)
 104     c[ii] = a[ii];
 105
 106 #pragma omp parallel
 107 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 108 #pragma omp masked taskloop simd
 109   for (c[ii] = 0; ii < 10; ++ii)
 110     c[ii] = a[ii];
 111
 112 #pragma omp parallel
 113 // Ok to skip parenthesises.
 114 #pragma omp masked taskloop simd
 115   for (((ii)) = 0; ii < 10; ++ii)
 116     c[ii] = a[ii];
 117
 118 #pragma omp parallel
 119 // 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'}}
 120 #pragma omp masked taskloop simd
 121   for (int i = 0; i; i++)
 122     c[i] = a[i];
 123
 124 #pragma omp parallel
 125 // omp4-error@+3 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} omp5-error@+3 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', '>=', or '!=') of loop variable 'i'}}
 126 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'i'}}
 127 #pragma omp masked taskloop simd
 128   for (int i = 0; jj < kk; ii++)
 129     c[i] = a[i];
 130
 131 #pragma omp parallel
 132 // 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'}}
 133 #pragma omp masked taskloop simd
 134   for (int i = 0; !!i; i++)
 135     c[i] = a[i];
 136
 137 #pragma omp parallel
 138 // omp4-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}}
 139 #pragma omp masked taskloop simd
 140   for (int i = 0; i != 1; i++)
 141     c[i] = a[i];
 142
 143 #pragma omp parallel
 144 // omp4-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} omp5-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', '>=', or '!=') of loop variable 'i'}}
 145 #pragma omp masked taskloop simd
 146   for (int i = 0;; i++)
 147     c[i] = a[i];
 148
 149 #pragma omp parallel
 150 // Ok.
 151 #pragma omp masked taskloop simd
 152   for (int i = 11; i > 10; i--)
 153     c[i] = a[i];
 154
 155 #pragma omp parallel
 156 // Ok.
 157 #pragma omp masked taskloop simd
 158   for (int i = 0; i < 10; ++i)
 159     c[i] = a[i];
 160
 161 #pragma omp parallel
 162 // Ok.
 163 #pragma omp masked taskloop simd
 164   for (ii = 0; ii < 10; ++ii)
 165     c[ii] = a[ii];
 166
 167 #pragma omp parallel
 168 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
 169 #pragma omp masked taskloop simd
 170   for (ii = 0; ii < 10; ++jj)
 171     c[ii] = a[jj];
 172
 173 #pragma omp parallel
 174 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
 175 #pragma omp masked taskloop simd
 176   for (ii = 0; ii < 10; ++++ii)
 177     c[ii] = a[ii];
 178
 179 #pragma omp parallel
 180 // Ok but undefined behavior (in general, cannot check that incr
 181 // is really loop-invariant).
 182 #pragma omp masked taskloop simd
 183   for (ii = 0; ii < 10; ii = ii + ii)
 184     c[ii] = a[ii];
 185
 186 #pragma omp parallel
 187 // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'float'}}
 188 #pragma omp masked taskloop simd
 189   for (ii = 0; ii < 10; ii = ii + 1.0f)
 190     c[ii] = a[ii];
 191
 192 #pragma omp parallel
 193 // Ok - step was converted to integer type.
 194 #pragma omp masked taskloop simd
 195   for (ii = 0; ii < 10; ii = ii + (int)1.1f)
 196     c[ii] = a[ii];
 197
 198 #pragma omp parallel
 199 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
 200 #pragma omp masked taskloop simd
 201   for (ii = 0; ii < 10; jj = ii + 2)
 202     c[ii] = a[ii];
 203
 204 #pragma omp parallel
 205 // expected-warning@+3 {{relational comparison result unused}}
 206 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
 207 #pragma omp masked taskloop simd
 208   for (ii = 0; ii<10; jj> kk + 2)
 209     c[ii] = a[ii];
 210
 211 #pragma omp parallel
 212 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
 213 #pragma omp masked taskloop simd
 214   for (ii = 0; ii < 10;)
 215     c[ii] = a[ii];
 216
 217 #pragma omp parallel
 218 // expected-warning@+3 {{expression result unused}}
 219 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
 220 #pragma omp masked taskloop simd
 221   for (ii = 0; ii < 10; !ii)
 222     c[ii] = a[ii];
 223
 224 #pragma omp parallel
 225 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
 226 #pragma omp masked taskloop simd
 227   for (ii = 0; ii < 10; ii ? ++ii : ++jj)
 228     c[ii] = a[ii];
 229
 230 #pragma omp parallel
 231 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
 232 #pragma omp masked taskloop simd
 233   for (ii = 0; ii < 10; ii = ii < 10)
 234     c[ii] = a[ii];
 235
 236 #pragma omp parallel
 237 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
 238 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
 239 #pragma omp masked taskloop simd
 240   for (ii = 0; ii < 10; ii = ii + 0)
 241     c[ii] = a[ii];
 242
 243 #pragma omp parallel
 244 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
 245 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
 246 #pragma omp masked taskloop simd
 247   for (ii = 0; ii < 10; ii = ii + (int)(0.8 - 0.45))
 248     c[ii] = a[ii];
 249
 250 #pragma omp parallel
 251 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
 252 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
 253 #pragma omp masked taskloop simd
 254   for (ii = 0; (ii) < 10; ii -= 25)
 255     c[ii] = a[ii];
 256
 257 #pragma omp parallel
 258 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
 259 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
 260 #pragma omp masked taskloop simd
 261   for (ii = 0; (ii < 10); ii -= 0)
 262     c[ii] = a[ii];
 263
 264 #pragma omp parallel
 265 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
 266 // expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}}
 267 #pragma omp masked taskloop simd
 268   for (ii = 0; ii > 10; (ii += 0))
 269     c[ii] = a[ii];
 270
 271 #pragma omp parallel
 272 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
 273 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
 274 #pragma omp masked taskloop simd
 275   for (ii = 0; ii < 10; (ii) = (1 - 1) + (ii))
 276     c[ii] = a[ii];
 277
 278 #pragma omp parallel
 279 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
 280 // expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}}
 281 #pragma omp masked taskloop simd
 282   for ((ii = 0); ii > 10; (ii -= 0))
 283     c[ii] = a[ii];
 284
 285 #pragma omp parallel
 286 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
 287 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
 288 #pragma omp masked taskloop simd
 289   for (ii = 0; (ii < 10); (ii -= 0))
 290     c[ii] = a[ii];
 291
 292 #pragma omp parallel
 293 // expected-note@+2  {{defined as firstprivate}}
 294 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp masked taskloop simd' directive may not be firstprivate, predetermined as linear}}
 295 #pragma omp masked taskloop simd firstprivate(ii)
 296   for (ii = 0; ii < 10; ii++)
 297     c[ii] = a[ii];
 298
 299 #pragma omp parallel
 300 #pragma omp masked taskloop simd linear(ii)
 301   for (ii = 0; ii < 10; ii++)
 302     c[ii] = a[ii];
 303
 304 // omp4-note@+3 {{defined as private}}
 305 // omp4-error@+3 {{loop iteration variable in the associated loop of 'omp masked taskloop simd' directive may not be private, predetermined as linear}}
 306 #pragma omp parallel
 307 #pragma omp masked taskloop simd private(ii)
 308   for (ii = 0; ii < 10; ii++)
 309     c[ii] = a[ii];
 310
 311 // omp4-note@+3 {{defined as lastprivate}}
 312 // omp4-error@+3 {{loop iteration variable in the associated loop of 'omp masked taskloop simd' directive may not be lastprivate, predetermined as linear}}
 313 #pragma omp parallel
 314 #pragma omp masked taskloop simd lastprivate(ii)
 315   for (ii = 0; ii < 10; ii++)
 316     c[ii] = a[ii];
 317
 318 #pragma omp parallel
 319   {
 320 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp masked taskloop simd' directive may not be threadprivate or thread local, predetermined as linear}}
 321 #pragma omp masked taskloop simd
 322     for (sii = 0; sii < 10; sii += 1)
 323       c[sii] = a[sii];
 324   }
 325
 326 #pragma omp parallel
 327   {
 328 #pragma omp masked taskloop simd
 329     for (reg0 = 0; reg0 < 10; reg0 += 1)
 330       c[reg0] = a[reg0];
 331   }
 332
 333 #pragma omp parallel
 334   {
 335 #pragma omp masked taskloop simd
 336     for (reg = 0; reg < 10; reg += 1)
 337       c[reg] = a[reg];
 338   }
 339
 340 #pragma omp parallel
 341   {
 342 #pragma omp masked taskloop simd
 343     for (globalii = 0; globalii < 10; globalii += 1)
 344       c[globalii] = a[globalii];
 345   }
 346
 347 #pragma omp parallel
 348   {
 349 #pragma omp masked taskloop simd collapse(2)
 350     for (ii = 0; ii < 10; ii += 1)
 351     for (globalii = 0; globalii < 10; globalii += 1)
 352       c[globalii] += a[globalii] + ii;
 353   }
 354
 355 #pragma omp parallel
 356 // omp4-error@+2 {{statement after '#pragma omp masked taskloop simd' must be a for loop}}
 357 #pragma omp masked taskloop simd
 358   for (auto &item : a) {
 359     item = item + 1;
 360   }
 361
 362 #pragma omp parallel
 363 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
 364 // expected-error@+2 {{increment expression must cause 'i' to increase on each iteration of OpenMP for loop}}
 365 #pragma omp masked taskloop simd
 366   for (unsigned i = 9; i < 10; i--) {
 367     c[i] = a[i] + b[i];
 368   }
 369
 370   int(*lb)[4] = nullptr;
 371 #pragma omp parallel
 372 #pragma omp masked taskloop simd
 373   for (int(*p)[4] = lb; p < lb + 8; ++p) {
 374   }
 375
 376 #pragma omp parallel
 377 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 378 #pragma omp masked taskloop simd
 379   for (int a{0}; a < 10; ++a) {
 380   }
 381
 382   return 0;
 383 }
 384
 385 // Iterators allowed in openmp for-loops.
 386 namespace std {
 387 struct random_access_iterator_tag {};
 388 template <class Iter>
 389 struct iterator_traits {
 390   typedef typename Iter::difference_type difference_type;
 391   typedef typename Iter::iterator_category iterator_category;
 392 };
 393 template <class Iter>
 394 typename iterator_traits<Iter>::difference_type
 395 distance(Iter first, Iter last) { return first - last; }
 396 }
 397 class Iter0 {
 398 public:
 399   Iter0() {}
 400   Iter0(const Iter0 &) {}
 401   Iter0 operator++() { return *this; }
 402   Iter0 operator--() { return *this; }
 403   bool operator<(Iter0 a) { return true; }
 404 };
 405 // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'Iter0' for 1st argument}}
 406 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'Iter0' for 1st argument}}
 407 int operator-(Iter0 a, Iter0 b) { return 0; }
 408 class Iter1 {
 409 public:
 410   Iter1(float f = 0.0f, double d = 0.0) {}
 411   Iter1(const Iter1 &) {}
 412   Iter1 operator++() { return *this; }
 413   Iter1 operator--() { return *this; }
 414   bool operator<(Iter1 a) { return true; }
 415   bool operator>=(Iter1 a) { return false; }
 416 };
 417 class GoodIter {
 418 public:
 419   GoodIter() {}
 420   GoodIter(const GoodIter &) {}
 421   GoodIter(int fst, int snd) {}
 422   GoodIter &operator=(const GoodIter &that) { return *this; }
 423   GoodIter &operator=(const Iter0 &that) { return *this; }
 424   GoodIter &operator+=(int x) { return *this; }
 425   GoodIter &operator-=(int x) { return *this; }
 426   explicit GoodIter(void *) {}
 427   GoodIter operator++() { return *this; }
 428   GoodIter operator--() { return *this; }
 429   bool operator!() { return true; }
 430   bool operator<(GoodIter a) { return true; }
 431   bool operator<=(GoodIter a) { return true; }
 432   bool operator>=(GoodIter a) { return false; }
 433   typedef int difference_type;
 434   typedef std::random_access_iterator_tag iterator_category;
 435 };
 436 // expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'GoodIter' for 2nd argument}}
 437 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}}
 438 int operator-(GoodIter a, GoodIter b) { return 0; }
 439 // expected-note@+1 3 {{candidate function not viable: requires single argument 'a', but 2 arguments were provided}}
 440 GoodIter operator-(GoodIter a) { return a; }
 441 // expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'int' for 2nd argument}}
 442 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}}
 443 GoodIter operator-(GoodIter a, int v) { return GoodIter(); }
 444 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'GoodIter' for 1st argument}}
 445 GoodIter operator+(GoodIter a, int v) { return GoodIter(); }
 446 // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'int' for 1st argument}}
 447 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'int' for 1st argument}}
 448 GoodIter operator-(int v, GoodIter a) { return GoodIter(); }
 449 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'int' for 1st argument}}
 450 GoodIter operator+(int v, GoodIter a) { return GoodIter(); }
 451
 452 int test_with_random_access_iterator() {
 453   GoodIter begin, end;
 454   Iter0 begin0, end0;
 455 #pragma omp parallel
 456 #pragma omp masked taskloop simd
 457   for (GoodIter I = begin; I < end; ++I)
 458     ++I;
 459 #pragma omp parallel
 460 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 461 #pragma omp masked taskloop simd
 462   for (GoodIter &I = begin; I < end; ++I)
 463     ++I;
 464 #pragma omp parallel
 465 #pragma omp masked taskloop simd
 466   for (GoodIter I = begin; I >= end; --I)
 467     ++I;
 468 #pragma omp parallel
 469 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 470 #pragma omp masked taskloop simd
 471   for (GoodIter I(begin); I < end; ++I)
 472     ++I;
 473 #pragma omp parallel
 474 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 475 #pragma omp masked taskloop simd
 476   for (GoodIter I(nullptr); I < end; ++I)
 477     ++I;
 478 #pragma omp parallel
 479 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 480 #pragma omp masked taskloop simd
 481   for (GoodIter I(0); I < end; ++I)
 482     ++I;
 483 #pragma omp parallel
 484 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 485 #pragma omp masked taskloop simd
 486   for (GoodIter I(1, 2); I < end; ++I)
 487     ++I;
 488 #pragma omp parallel
 489 #pragma omp masked taskloop simd
 490   for (begin = GoodIter(0); begin < end; ++begin)
 491     ++begin;
 492 // expected-error@+4 {{invalid operands to binary expression ('GoodIter' and 'const Iter0')}}
 493 // expected-error@+3 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
 494 #pragma omp parallel
 495 #pragma omp masked taskloop simd
 496   for (begin = begin0; begin < end; ++begin)
 497     ++begin;
 498 #pragma omp parallel
 499 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 500 #pragma omp masked taskloop simd
 501   for (++begin; begin < end; ++begin)
 502     ++begin;
 503 #pragma omp parallel
 504 #pragma omp masked taskloop simd
 505   for (begin = end; begin < end; ++begin)
 506     ++begin;
 507 #pragma omp parallel
 508 // 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'}}
 509 #pragma omp masked taskloop simd
 510   for (GoodIter I = begin; I - I; ++I)
 511     ++I;
 512 #pragma omp parallel
 513 // 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'}}
 514 #pragma omp masked taskloop simd
 515   for (GoodIter I = begin; begin < end; ++I)
 516     ++I;
 517 #pragma omp parallel
 518 // 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'}}
 519 #pragma omp masked taskloop simd
 520   for (GoodIter I = begin; !I; ++I)
 521     ++I;
 522 #pragma omp parallel
 523 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
 524 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
 525 #pragma omp masked taskloop simd
 526   for (GoodIter I = begin; I >= end; I = I + 1)
 527     ++I;
 528 #pragma omp parallel
 529 #pragma omp masked taskloop simd
 530   for (GoodIter I = begin; I >= end; I = I - 1)
 531     ++I;
 532 #pragma omp parallel
 533 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}}
 534 #pragma omp masked taskloop simd
 535   for (GoodIter I = begin; I >= end; I = -I)
 536     ++I;
 537 #pragma omp parallel
 538 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
 539 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
 540 #pragma omp masked taskloop simd
 541   for (GoodIter I = begin; I >= end; I = 2 + I)
 542     ++I;
 543 #pragma omp parallel
 544 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}}
 545 #pragma omp masked taskloop simd
 546   for (GoodIter I = begin; I >= end; I = 2 - I)
 547     ++I;
 548 // In the following example, we cannot update the loop variable using '+='
 549 // expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}}
 550 #pragma omp parallel
 551 #pragma omp masked taskloop simd
 552   for (Iter0 I = begin0; I < end0; ++I)
 553     ++I;
 554 #pragma omp parallel
 555 // Initializer is constructor without params.
 556 // expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}}
 557 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 558 #pragma omp masked taskloop simd
 559   for (Iter0 I; I < end0; ++I)
 560     ++I;
 561   Iter1 begin1, end1;
 562 // expected-error@+4 {{invalid operands to binary expression ('Iter1' and 'Iter1')}}
 563 // expected-error@+3 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
 564 #pragma omp parallel
 565 #pragma omp masked taskloop simd
 566   for (Iter1 I = begin1; I < end1; ++I)
 567     ++I;
 568 #pragma omp parallel
 569 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
 570 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
 571 #pragma omp masked taskloop simd
 572   for (Iter1 I = begin1; I >= end1; ++I)
 573     ++I;
 574 #pragma omp parallel
 575 // expected-error@+5 {{invalid operands to binary expression ('Iter1' and 'float')}}
 576 // expected-error@+4 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
 577 // Initializer is constructor with all default params.
 578 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 579 #pragma omp masked taskloop simd
 580   for (Iter1 I; I < end1; ++I) {
 581   }
 582   return 0;
 583 }
 584
 585 template <typename IT, int ST>
 586 class TC {
 587 public:
 588   int dotest_lt(IT begin, IT end) {
 589 #pragma omp parallel
 590 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
 591 // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}}
 592 #pragma omp masked taskloop simd
 593     for (IT I = begin; I < end; I = I + ST) {
 594       ++I;
 595     }
 596 #pragma omp parallel
 597 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
 598 // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}}
 599 #pragma omp masked taskloop simd
 600     for (IT I = begin; I <= end; I += ST) {
 601       ++I;
 602     }
 603 #pragma omp parallel
 604 #pragma omp masked taskloop simd
 605     for (IT I = begin; I < end; ++I) {
 606       ++I;
 607     }
 608   }
 609
 610   static IT step() {
 611     return IT(ST);
 612   }
 613 };
 614 template <typename IT, int ST = 0>
 615 int dotest_gt(IT begin, IT end) {
 616 #pragma omp parallel
 617 // expected-note@+3 2 {{loop step is expected to be negative due to this condition}}
 618 // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
 619 #pragma omp masked taskloop simd
 620   for (IT I = begin; I >= end; I = I + ST) {
 621     ++I;
 622   }
 623 #pragma omp parallel
 624 // expected-note@+3 2 {{loop step is expected to be negative due to this condition}}
 625 // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
 626 #pragma omp masked taskloop simd
 627   for (IT I = begin; I >= end; I += ST) {
 628     ++I;
 629   }
 630
 631 #pragma omp parallel
 632 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
 633 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
 634 #pragma omp masked taskloop simd
 635   for (IT I = begin; I >= end; ++I) {
 636     ++I;
 637   }
 638
 639 #pragma omp parallel
 640 #pragma omp masked taskloop simd
 641   for (IT I = begin; I < end; I += TC<int, ST>::step()) {
 642     ++I;
 643   }
 644 }
 645
 646 void test_with_template() {
 647   GoodIter begin, end;
 648   TC<GoodIter, 100> t1;
 649   TC<GoodIter, -100> t2;
 650   t1.dotest_lt(begin, end);
 651   t2.dotest_lt(begin, end);         // expected-note {{in instantiation of member function 'TC<GoodIter, -100>::dotest_lt' requested here}}
 652   dotest_gt(begin, end);            // expected-note {{in instantiation of function template specialization 'dotest_gt<GoodIter, 0>' requested here}}
 653   dotest_gt<unsigned, 10>(0, 100);  // expected-note {{in instantiation of function template specialization 'dotest_gt<unsigned int, 10>' requested here}}
 654 }
 655
 656 void test_loop_break() {
 657   const int N = 100;
 658   float a[N], b[N], c[N];
 659 #pragma omp parallel
 660 #pragma omp masked taskloop simd
 661   for (int i = 0; i < 10; i++) {
 662     c[i] = a[i] + b[i];
 663     for (int j = 0; j < 10; ++j) {
 664       if (a[i] > b[j])
 665         break; // OK in nested loop
 666     }
 667     switch (i) {
 668     case 1:
 669       b[i]++;
 670       break;
 671     default:
 672       break;
 673     }
 674     if (c[i] > 10)
 675       break; // expected-error {{'break' statement cannot be used in OpenMP for loop}}
 676
 677     if (c[i] > 11)
 678       break; // expected-error {{'break' statement cannot be used in OpenMP for loop}}
 679   }
 680
 681 #pragma omp parallel
 682 #pragma omp masked taskloop simd
 683   for (int i = 0; i < 10; i++) {
 684     for (int j = 0; j < 10; j++) {
 685       c[i] = a[i] + b[i];
 686       if (c[i] > 10) {
 687         if (c[i] < 20) {
 688           break; // OK
 689         }
 690       }
 691     }
 692   }
 693 }
 694
 695 void test_loop_eh() {
 696   const int N = 100;
 697   float a[N], b[N], c[N];
 698 #pragma omp parallel
 699 #pragma omp masked taskloop simd
 700   for (int i = 0; i < 10; i++) {
 701     c[i] = a[i] + b[i];
 702     try { // expected-error {{'try' statement cannot be used in OpenMP simd region}}
 703       for (int j = 0; j < 10; ++j) {
 704         if (a[i] > b[j])
 705           throw a[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}}
 706       }
 707       throw a[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}}
 708     } catch (float f) {
 709       if (f > 0.1)
 710         throw a[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}}
 711       return; // expected-error {{cannot return from OpenMP region}}
 712     }
 713     switch (i) {
 714     case 1:
 715       b[i]++;
 716       break;
 717     default:
 718       break;
 719     }
 720     for (int j = 0; j < 10; j++) {
 721       if (c[i] > 10)
 722         throw c[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}}
 723     }
 724   }
 725   if (c[9] > 10)
 726     throw c[9]; // OK
 727
 728 #pragma omp parallel
 729 #pragma omp masked taskloop simd
 730   for (int i = 0; i < 10; ++i) {
 731     struct S {
 732       void g() { throw 0; }
 733     };
 734   }
 735 }
 736
 737 void test_loop_firstprivate_lastprivate() {
 738   S s(4);
 739 #pragma omp parallel
 740 #pragma omp masked taskloop simd lastprivate(s) firstprivate(s)
 741   for (int i = 0; i < 16; ++i)
 742     ;
 743 }
 744