clang/test/OpenMP/parallel_master_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   register int reg; // expected-warning {{'register' storage class specifier is deprecated}}
  32 #pragma omp parallel
  33 #pragma omp parallel master taskloop simd
  34   for (int i = 0; i < 10; i += 1) {
  35     c[i] = a[i] + b[i];
  36   }
  37 #pragma omp parallel
  38 #pragma omp parallel master taskloop simd
  39   for (char i = 0; i < 10; i++) {
  40     c[i] = a[i] + b[i];
  41   }
  42 #pragma omp parallel
  43 #pragma omp parallel master taskloop simd
  44   for (char i = 0; i < 10; i += '\1') {
  45     c[i] = a[i] + b[i];
  46   }
  47 #pragma omp parallel
  48 #pragma omp parallel master taskloop simd
  49   for (long long i = 0; i < 10; i++) {
  50     c[i] = a[i] + b[i];
  51   }
  52 #pragma omp parallel
  53 // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'double'}}
  54 #pragma omp parallel master taskloop simd
  55   for (long long i = 0; i < 10; i += 1.5) {
  56     c[i] = a[i] + b[i];
  57   }
  58 #pragma omp parallel
  59 #pragma omp parallel master taskloop simd
  60   for (long long i = 0; i < 'z'; i += 1u) {
  61     c[i] = a[i] + b[i];
  62   }
  63 #pragma omp parallel
  64 // expected-error@+2 {{variable must be of integer or random access iterator type}}
  65 #pragma omp parallel master taskloop simd
  66   for (float fi = 0; fi < 10.0; fi++) {
  67     c[(int)fi] = a[(int)fi] + b[(int)fi];
  68   }
  69 #pragma omp parallel
  70 // expected-error@+2 {{variable must be of integer or random access iterator type}}
  71 #pragma omp parallel master taskloop simd
  72   for (double fi = 0; fi < 10.0; fi++) {
  73     c[(int)fi] = a[(int)fi] + b[(int)fi];
  74   }
  75 #pragma omp parallel
  76 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  77 #pragma omp parallel master taskloop simd
  78   for (int &ref = ii; ref < 10; ref++) {
  79   }
  80 #pragma omp parallel
  81 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  82 #pragma omp parallel master taskloop simd
  83   for (int i; i < 10; i++)
  84     c[i] = a[i];
  85
  86 #pragma omp parallel
  87 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  88 #pragma omp parallel master taskloop simd
  89   for (int i = 0, j = 0; i < 10; ++i)
  90     c[i] = a[i];
  91
  92 #pragma omp parallel
  93 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  94 #pragma omp parallel master taskloop simd
  95   for (; ii < 10; ++ii)
  96     c[ii] = a[ii];
  97
  98 #pragma omp parallel
  99 // expected-warning@+3 {{expression result unused}}
 100 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 101 #pragma omp parallel master taskloop simd
 102   for (ii + 1; ii < 10; ++ii)
 103     c[ii] = a[ii];
 104
 105 #pragma omp parallel
 106 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 107 #pragma omp parallel master taskloop simd
 108   for (c[ii] = 0; ii < 10; ++ii)
 109     c[ii] = a[ii];
 110
 111 #pragma omp parallel
 112 // Ok to skip parenthesises.
 113 #pragma omp parallel master taskloop simd
 114   for (((ii)) = 0; ii < 10; ++ii)
 115     c[ii] = a[ii];
 116
 117 #pragma omp parallel
 118 // 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'}}
 119 #pragma omp parallel master taskloop simd
 120   for (int i = 0; i; i++)
 121     c[i] = a[i];
 122
 123 #pragma omp parallel
 124 // 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'}}
 125 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'i'}}
 126 #pragma omp parallel master taskloop simd
 127   for (int i = 0; jj < kk; ii++)
 128     c[i] = a[i];
 129
 130 #pragma omp parallel
 131 // 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'}}
 132 #pragma omp parallel master taskloop simd
 133   for (int i = 0; !!i; i++)
 134     c[i] = a[i];
 135
 136 // Ok
 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 parallel master 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 parallel master taskloop simd
 146   for (int i = 0;; i++)
 147     c[i] = a[i];
 148
 149 #pragma omp parallel
 150 // Ok.
 151 #pragma omp parallel master 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 parallel master 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 parallel master 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 parallel master 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 parallel master 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 parallel master 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 parallel master 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 parallel master 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 parallel master 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 parallel master 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 parallel master 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 parallel master 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 parallel master 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 parallel master 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 parallel master 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 parallel master 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 parallel master 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 parallel master 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 parallel master 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 parallel master 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 parallel master 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 parallel master 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 parallel master taskloop simd' directive may not be firstprivate, predetermined as linear}}
 295 #pragma omp parallel master taskloop simd firstprivate(ii)
 296   for (ii = 0; ii < 10; ii++)
 297     c[ii] = a[ii];
 298
 299 #pragma omp parallel
 300 // expected-error@+1 {{unexpected OpenMP clause 'in_reduction' in directive '#pragma omp parallel master taskloop simd'}}
 301 #pragma omp parallel master taskloop simd in_reduction(+:ii)
 302   for (ii = 0; ii < 10; ii++)
 303     c[ii] = a[ii];
 304
 305 #pragma omp parallel
 306 #pragma omp parallel master taskloop simd linear(ii)
 307   for (ii = 0; ii < 10; ii++)
 308     c[ii] = a[ii];
 309
 310 #pragma omp parallel
 311   {
 312 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp parallel master taskloop simd' directive may not be threadprivate or thread local, predetermined as linear}}
 313 #pragma omp parallel master taskloop simd
 314     for (sii = 0; sii < 10; sii += 1)
 315       c[sii] = a[sii];
 316   }
 317
 318 #pragma omp parallel
 319   {
 320 #pragma omp parallel master taskloop simd
 321     for (reg0 = 0; reg0 < 10; reg0 += 1)
 322       c[reg0] = a[reg0];
 323   }
 324
 325 #pragma omp parallel
 326   {
 327 #pragma omp parallel master taskloop simd
 328     for (reg = 0; reg < 10; reg += 1)
 329       c[reg] = a[reg];
 330   }
 331
 332 #pragma omp parallel
 333   {
 334 #pragma omp parallel master taskloop simd
 335     for (globalii = 0; globalii < 10; globalii += 1)
 336       c[globalii] = a[globalii];
 337   }
 338
 339 #pragma omp parallel
 340   {
 341 #pragma omp parallel master taskloop simd collapse(2)
 342     for (ii = 0; ii < 10; ii += 1)
 343     for (globalii = 0; globalii < 10; globalii += 1)
 344       c[globalii] += a[globalii] + ii;
 345   }
 346
 347 #pragma omp parallel
 348 // omp4-error@+2 {{statement after '#pragma omp parallel master taskloop simd' must be a for loop}}
 349 #pragma omp parallel master taskloop simd
 350   for (auto &item : a) {
 351     item = item + 1;
 352   }
 353
 354 #pragma omp parallel
 355 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
 356 // expected-error@+2 {{increment expression must cause 'i' to increase on each iteration of OpenMP for loop}}
 357 #pragma omp parallel master taskloop simd
 358   for (unsigned i = 9; i < 10; i--) {
 359     c[i] = a[i] + b[i];
 360   }
 361
 362   int(*lb)[4] = nullptr;
 363 #pragma omp parallel
 364 #pragma omp parallel master taskloop simd
 365   for (int(*p)[4] = lb; p < lb + 8; ++p) {
 366   }
 367
 368 #pragma omp parallel
 369 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 370 #pragma omp parallel master taskloop simd
 371   for (int a{0}; a < 10; ++a) {
 372   }
 373
 374   return 0;
 375 }
 376
 377 // Iterators allowed in openmp for-loops.
 378 namespace std {
 379 struct random_access_iterator_tag {};
 380 template <class Iter>
 381 struct iterator_traits {
 382   typedef typename Iter::difference_type difference_type;
 383   typedef typename Iter::iterator_category iterator_category;
 384 };
 385 template <class Iter>
 386 typename iterator_traits<Iter>::difference_type
 387 distance(Iter first, Iter last) { return first - last; }
 388 }
 389 class Iter0 {
 390 public:
 391   Iter0() {}
 392   Iter0(const Iter0 &) {}
 393   Iter0 operator++() { return *this; }
 394   Iter0 operator--() { return *this; }
 395   bool operator<(Iter0 a) { return true; }
 396 };
 397 // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'Iter0' for 1st argument}}
 398 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'Iter0' for 1st argument}}
 399 int operator-(Iter0 a, Iter0 b) { return 0; }
 400 class Iter1 {
 401 public:
 402   Iter1(float f = 0.0f, double d = 0.0) {}
 403   Iter1(const Iter1 &) {}
 404   Iter1 operator++() { return *this; }
 405   Iter1 operator--() { return *this; }
 406   bool operator<(Iter1 a) { return true; }
 407   bool operator>=(Iter1 a) { return false; }
 408 };
 409 class GoodIter {
 410 public:
 411   GoodIter() {}
 412   GoodIter(const GoodIter &) {}
 413   GoodIter(int fst, int snd) {}
 414   GoodIter &operator=(const GoodIter &that) { return *this; }
 415   GoodIter &operator=(const Iter0 &that) { return *this; }
 416   GoodIter &operator+=(int x) { return *this; }
 417   GoodIter &operator-=(int x) { return *this; }
 418   explicit GoodIter(void *) {}
 419   GoodIter operator++() { return *this; }
 420   GoodIter operator--() { return *this; }
 421   bool operator!() { return true; }
 422   bool operator<(GoodIter a) { return true; }
 423   bool operator<=(GoodIter a) { return true; }
 424   bool operator>=(GoodIter a) { return false; }
 425   typedef int difference_type;
 426   typedef std::random_access_iterator_tag iterator_category;
 427 };
 428 // expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'GoodIter' for 2nd argument}}
 429 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}}
 430 int operator-(GoodIter a, GoodIter b) { return 0; }
 431 // expected-note@+1 3 {{candidate function not viable: requires single argument 'a', but 2 arguments were provided}}
 432 GoodIter operator-(GoodIter a) { return a; }
 433 // expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'int' for 2nd argument}}
 434 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}}
 435 GoodIter operator-(GoodIter a, int v) { return GoodIter(); }
 436 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'GoodIter' for 1st argument}}
 437 GoodIter operator+(GoodIter a, int v) { return GoodIter(); }
 438 // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'int' for 1st argument}}
 439 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'int' for 1st argument}}
 440 GoodIter operator-(int v, GoodIter a) { return GoodIter(); }
 441 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'int' for 1st argument}}
 442 GoodIter operator+(int v, GoodIter a) { return GoodIter(); }
 443
 444 int test_with_random_access_iterator() {
 445   GoodIter begin, end;
 446   Iter0 begin0, end0;
 447 #pragma omp parallel
 448 #pragma omp parallel master taskloop simd
 449   for (GoodIter I = begin; I < end; ++I)
 450     ++I;
 451 #pragma omp parallel
 452 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 453 #pragma omp parallel master taskloop simd
 454   for (GoodIter &I = begin; I < end; ++I)
 455     ++I;
 456 #pragma omp parallel
 457 #pragma omp parallel master taskloop simd
 458   for (GoodIter I = begin; I >= end; --I)
 459     ++I;
 460 #pragma omp parallel
 461 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 462 #pragma omp parallel master taskloop simd
 463   for (GoodIter I(begin); I < end; ++I)
 464     ++I;
 465 #pragma omp parallel
 466 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 467 #pragma omp parallel master taskloop simd
 468   for (GoodIter I(nullptr); I < end; ++I)
 469     ++I;
 470 #pragma omp parallel
 471 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 472 #pragma omp parallel master taskloop simd
 473   for (GoodIter I(0); I < end; ++I)
 474     ++I;
 475 #pragma omp parallel
 476 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 477 #pragma omp parallel master taskloop simd
 478   for (GoodIter I(1, 2); I < end; ++I)
 479     ++I;
 480 #pragma omp parallel
 481 #pragma omp parallel master taskloop simd
 482   for (begin = GoodIter(0); begin < end; ++begin)
 483     ++begin;
 484 // expected-error@+4 {{invalid operands to binary expression ('GoodIter' and 'const Iter0')}}
 485 // expected-error@+3 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
 486 #pragma omp parallel
 487 #pragma omp parallel master taskloop simd
 488   for (begin = begin0; begin < end; ++begin)
 489     ++begin;
 490 #pragma omp parallel
 491 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 492 #pragma omp parallel master taskloop simd
 493   for (++begin; begin < end; ++begin)
 494     ++begin;
 495 #pragma omp parallel
 496 #pragma omp parallel master taskloop simd
 497   for (begin = end; begin < end; ++begin)
 498     ++begin;
 499 #pragma omp parallel
 500 // 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'}}
 501 #pragma omp parallel master taskloop simd
 502   for (GoodIter I = begin; I - I; ++I)
 503     ++I;
 504 #pragma omp parallel
 505 // 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'}}
 506 #pragma omp parallel master taskloop simd
 507   for (GoodIter I = begin; begin < end; ++I)
 508     ++I;
 509 #pragma omp parallel
 510 // 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'}}
 511 #pragma omp parallel master taskloop simd
 512   for (GoodIter I = begin; !I; ++I)
 513     ++I;
 514 #pragma omp parallel
 515 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
 516 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
 517 #pragma omp parallel master taskloop simd
 518   for (GoodIter I = begin; I >= end; I = I + 1)
 519     ++I;
 520 #pragma omp parallel
 521 #pragma omp parallel master taskloop simd
 522   for (GoodIter I = begin; I >= end; I = I - 1)
 523     ++I;
 524 #pragma omp parallel
 525 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}}
 526 #pragma omp parallel master taskloop simd
 527   for (GoodIter I = begin; I >= end; I = -I)
 528     ++I;
 529 #pragma omp parallel
 530 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
 531 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
 532 #pragma omp parallel master taskloop simd
 533   for (GoodIter I = begin; I >= end; I = 2 + I)
 534     ++I;
 535 #pragma omp parallel
 536 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}}
 537 #pragma omp parallel master taskloop simd
 538   for (GoodIter I = begin; I >= end; I = 2 - I)
 539     ++I;
 540 // In the following example, we cannot update the loop variable using '+='
 541 // expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}}
 542 #pragma omp parallel
 543 #pragma omp parallel master taskloop simd
 544   for (Iter0 I = begin0; I < end0; ++I)
 545     ++I;
 546 #pragma omp parallel
 547 // Initializer is constructor without params.
 548 // expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}}
 549 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 550 #pragma omp parallel master taskloop simd
 551   for (Iter0 I; I < end0; ++I)
 552     ++I;
 553   Iter1 begin1, end1;
 554 // expected-error@+4 {{invalid operands to binary expression ('Iter1' and 'Iter1')}}
 555 // expected-error@+3 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
 556 #pragma omp parallel
 557 #pragma omp parallel master taskloop simd
 558   for (Iter1 I = begin1; I < end1; ++I)
 559     ++I;
 560 #pragma omp parallel
 561 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
 562 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
 563 #pragma omp parallel master taskloop simd
 564   for (Iter1 I = begin1; I >= end1; ++I)
 565     ++I;
 566 #pragma omp parallel
 567 // expected-error@+5 {{invalid operands to binary expression ('Iter1' and 'float')}}
 568 // expected-error@+4 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
 569 // Initializer is constructor with all default params.
 570 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
 571 #pragma omp parallel master taskloop simd
 572   for (Iter1 I; I < end1; ++I) {
 573   }
 574   return 0;
 575 }
 576
 577 template <typename IT, int ST>
 578 class TC {
 579 public:
 580   int dotest_lt(IT begin, IT end) {
 581 #pragma omp parallel
 582 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
 583 // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}}
 584 #pragma omp parallel master taskloop simd
 585     for (IT I = begin; I < end; I = I + ST) {
 586       ++I;
 587     }
 588 #pragma omp parallel
 589 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
 590 // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}}
 591 #pragma omp parallel master taskloop simd
 592     for (IT I = begin; I <= end; I += ST) {
 593       ++I;
 594     }
 595 #pragma omp parallel
 596 #pragma omp parallel master taskloop simd
 597     for (IT I = begin; I < end; ++I) {
 598       ++I;
 599     }
 600   }
 601
 602   static IT step() {
 603     return IT(ST);
 604   }
 605 };
 606 template <typename IT, int ST = 0>
 607 int dotest_gt(IT begin, IT end) {
 608 #pragma omp parallel
 609 // expected-note@+3 2 {{loop step is expected to be negative due to this condition}}
 610 // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
 611 #pragma omp parallel master taskloop simd
 612   for (IT I = begin; I >= end; I = I + ST) {
 613     ++I;
 614   }
 615 #pragma omp parallel
 616 // expected-note@+3 2 {{loop step is expected to be negative due to this condition}}
 617 // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
 618 #pragma omp parallel master taskloop simd
 619   for (IT I = begin; I >= end; I += ST) {
 620     ++I;
 621   }
 622
 623 #pragma omp parallel
 624 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
 625 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
 626 #pragma omp parallel master taskloop simd
 627   for (IT I = begin; I >= end; ++I) {
 628     ++I;
 629   }
 630
 631 #pragma omp parallel
 632 #pragma omp parallel master taskloop simd
 633   for (IT I = begin; I < end; I += TC<int, ST>::step()) {
 634     ++I;
 635   }
 636 }
 637
 638 void test_with_template() {
 639   GoodIter begin, end;
 640   TC<GoodIter, 100> t1;
 641   TC<GoodIter, -100> t2;
 642   t1.dotest_lt(begin, end);
 643   t2.dotest_lt(begin, end);         // expected-note {{in instantiation of member function 'TC<GoodIter, -100>::dotest_lt' requested here}}
 644   dotest_gt(begin, end);            // expected-note {{in instantiation of function template specialization 'dotest_gt<GoodIter, 0>' requested here}}
 645   dotest_gt<unsigned, 10>(0, 100);  // expected-note {{in instantiation of function template specialization 'dotest_gt<unsigned int, 10>' requested here}}
 646 }
 647
 648 void test_loop_break() {
 649   const int N = 100;
 650   float a[N], b[N], c[N];
 651 #pragma omp parallel
 652 #pragma omp parallel master taskloop simd
 653   for (int i = 0; i < 10; i++) {
 654     c[i] = a[i] + b[i];
 655     for (int j = 0; j < 10; ++j) {
 656       if (a[i] > b[j])
 657         break; // OK in nested loop
 658     }
 659     switch (i) {
 660     case 1:
 661       b[i]++;
 662       break;
 663     default:
 664       break;
 665     }
 666     if (c[i] > 10)
 667       break; // expected-error {{'break' statement cannot be used in OpenMP for loop}}
 668
 669     if (c[i] > 11)
 670       break; // expected-error {{'break' statement cannot be used in OpenMP for loop}}
 671   }
 672
 673 #pragma omp parallel
 674 #pragma omp parallel master taskloop simd
 675   for (int i = 0; i < 10; i++) {
 676     for (int j = 0; j < 10; j++) {
 677       c[i] = a[i] + b[i];
 678       if (c[i] > 10) {
 679         if (c[i] < 20) {
 680           break; // OK
 681         }
 682       }
 683     }
 684   }
 685 }
 686
 687 void test_loop_eh() {
 688   const int N = 100;
 689   float a[N], b[N], c[N];
 690 #pragma omp parallel
 691 #pragma omp parallel master taskloop simd
 692   for (int i = 0; i < 10; i++) {
 693     c[i] = a[i] + b[i];
 694     try { // expected-error {{'try' statement cannot be used in OpenMP simd region}}
 695       for (int j = 0; j < 10; ++j) {
 696         if (a[i] > b[j])
 697           throw a[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}}
 698       }
 699       throw a[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}}
 700     } catch (float f) {
 701       if (f > 0.1)
 702         throw a[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}}
 703       return; // expected-error {{cannot return from OpenMP region}}
 704     }
 705     switch (i) {
 706     case 1:
 707       b[i]++;
 708       break;
 709     default:
 710       break;
 711     }
 712     for (int j = 0; j < 10; j++) {
 713       if (c[i] > 10)
 714         throw c[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}}
 715     }
 716   }
 717   if (c[9] > 10)
 718     throw c[9]; // OK
 719
 720 #pragma omp parallel
 721 #pragma omp parallel master taskloop simd
 722   for (int i = 0; i < 10; ++i) {
 723     struct S {
 724       void g() { throw 0; }
 725     };
 726   }
 727 }
 728
 729 void test_loop_firstprivate_lastprivate() {
 730   S s(4);
 731   int c;
 732 #pragma omp parallel
 733 #pragma omp parallel master taskloop simd lastprivate(s) firstprivate(s)
 734   for (int i = 0; i < 16; ++i)
 735     ;
 736 #pragma omp parallel master taskloop simd if(c) default(none) // expected-error {{variable 'c' must have explicitly specified data sharing attributes}} expected-note {{explicit data sharing attribute requested here}}
 737   for (int i = 0; i < 16; ++i)
 738     ;
 739 #pragma omp parallel master taskloop simd if(taskloop:c) default(none) // expected-error {{variable 'c' must have explicitly specified data sharing attributes}} expected-note {{explicit data sharing attribute requested here}}
 740   for (int i = 0; i < 16; ++i)
 741     ;
 742 #pragma omp parallel master taskloop simd if(parallel:c) default(none)
 743   for (int i = 0; i < 16; ++i)
 744     ;
 745 }
 746