1 // RUN: %clang_cc1 -fsyntax-only -fopenmp -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify %s -Wno-openmp-target
3 // RUN: %clang_cc1 -fsyntax-only -fopenmp-simd -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify %s -Wno-openmp-target
11 S(const S &s) : a(s.a) {}
15 // expected-note@+1 {{defined as threadprivate or thread local}}
16 #pragma omp threadprivate(sii)
19 int test_iteration_spaces() {
21 float a[N], b[N], c[N];
25 #pragma omp target simd
26 for (int i = 0; i < 10; i += 1) {
29 #pragma omp target simd
30 for (char i = 0; i < 10; i++) {
33 #pragma omp target simd
34 for (char i = 0; i < 10; i += '\1') {
37 #pragma omp target simd
38 for (long long i = 0; i < 10; i++) {
41 // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'double'}}
42 #pragma omp target simd
43 for (long long i = 0; i < 10; i += 1.5) {
46 #pragma omp target simd
47 for (long long i = 0; i < 'z'; i += 1u) {
50 // expected-error@+2 {{variable must be of integer or random access iterator type}}
51 #pragma omp target simd
52 for (float fi = 0; fi < 10.0; fi++) {
53 c[(int)fi] = a[(int)fi] + b[(int)fi];
55 // expected-error@+2 {{variable must be of integer or random access iterator type}}
56 #pragma omp target simd
57 for (double fi = 0; fi < 10.0; fi++) {
58 c[(int)fi] = a[(int)fi] + b[(int)fi];
60 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
61 #pragma omp target simd
62 for (int &ref = ii; ref < 10; ref++) {
64 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
65 #pragma omp target simd
66 for (int i; i < 10; i++)
69 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
70 #pragma omp target simd
71 for (int i = 0, j = 0; i < 10; ++i)
74 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
75 #pragma omp target simd
79 // expected-warning@+3 {{expression result unused}}
80 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
81 #pragma omp target simd
82 for (ii + 1; ii < 10; ++ii)
85 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
86 #pragma omp target simd
87 for (c[ii] = 0; ii < 10; ++ii)
90 // Ok to skip parenthesises.
91 #pragma omp target simd
92 for (((ii)) = 0; ii < 10; ++ii)
95 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}}
96 #pragma omp target simd
97 for (int i = 0; i; i++)
100 // expected-error@+3 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}}
101 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'i'}}
102 #pragma omp target simd
103 for (int i = 0; jj < kk; ii++)
106 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}}
107 #pragma omp target simd
108 for (int i = 0; !!i; i++)
111 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}}
112 #pragma omp target simd
113 for (int i = 0; i != 1; i++)
116 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}}
117 #pragma omp target simd
118 for (int i = 0;; i++)
122 #pragma omp target simd
123 for (int i = 11; i > 10; i--)
127 #pragma omp target simd
128 for (int i = 0; i < 10; ++i)
132 #pragma omp target simd
133 for (ii = 0; ii < 10; ++ii)
136 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
137 #pragma omp target simd
138 for (ii = 0; ii < 10; ++jj)
141 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
142 #pragma omp target simd
143 for (ii = 0; ii < 10; ++++ii)
146 // Ok but undefined behavior (in general, cannot check that incr
147 // is really loop-invariant).
148 #pragma omp target simd
149 for (ii = 0; ii < 10; ii = ii + ii)
152 // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'float'}}
153 #pragma omp target simd
154 for (ii = 0; ii < 10; ii = ii + 1.0f)
157 // Ok - step was converted to integer type.
158 #pragma omp target simd
159 for (ii = 0; ii < 10; ii = ii + (int)1.1f)
162 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
163 #pragma omp target simd
164 for (ii = 0; ii < 10; jj = ii + 2)
167 // expected-warning@+3 {{relational comparison result unused}}
168 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
169 #pragma omp target simd
170 for (ii = 0; ii<10; jj> kk + 2)
173 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
174 #pragma omp target simd
175 for (ii = 0; ii < 10;)
178 // expected-warning@+3 {{expression result unused}}
179 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
180 #pragma omp target simd
181 for (ii = 0; ii < 10; !ii)
184 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
185 #pragma omp target simd
186 for (ii = 0; ii < 10; ii ? ++ii : ++jj)
189 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
190 #pragma omp target simd
191 for (ii = 0; ii < 10; ii = ii < 10)
194 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
195 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
196 #pragma omp target simd
197 for (ii = 0; ii < 10; ii = ii + 0)
200 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
201 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
202 #pragma omp target simd
203 for (ii = 0; ii < 10; ii = ii + (int)(0.8 - 0.45))
206 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
207 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
208 #pragma omp target simd
209 for (ii = 0; (ii) < 10; ii -= 25)
212 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
213 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
214 #pragma omp target simd
215 for (ii = 0; (ii < 10); ii -= 0)
218 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
219 // expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}}
220 #pragma omp target simd
221 for (ii = 0; ii > 10; (ii += 0))
224 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
225 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
226 #pragma omp target simd
227 for (ii = 0; ii < 10; (ii) = (1 - 1) + (ii))
230 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
231 // expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}}
232 #pragma omp target simd
233 for ((ii = 0); ii > 10; (ii -= 0))
236 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
237 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
238 #pragma omp target simd
239 for (ii = 0; (ii < 10); (ii -= 0))
242 // expected-note@+2 {{defined as firstprivate}}
243 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp target simd' directive may not be firstprivate, predetermined as linear}}
244 #pragma omp target simd firstprivate(ii)
245 for (ii = 0; ii < 10; ii++)
248 #pragma omp target simd linear(ii)
249 for (ii = 0; ii < 10; ii++)
252 // expected-note@+2 {{defined as private}}
253 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp target simd' directive may not be private, predetermined as linear}}
254 #pragma omp target simd private(ii)
255 for (ii = 0; ii < 10; ii++)
258 // expected-note@+2 {{defined as lastprivate}}
259 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp target simd' directive may not be lastprivate, predetermined as linear}}
260 #pragma omp target simd lastprivate(ii)
261 for (ii = 0; ii < 10; ii++)
265 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp target simd' directive may not be threadprivate or thread local, predetermined as linear}}
266 #pragma omp target simd
267 for (sii = 0; sii < 10; sii += 1)
272 #pragma omp target simd
273 for (globalii = 0; globalii < 10; globalii += 1)
274 c[globalii] = a[globalii];
278 #pragma omp target simd collapse(2)
279 for (ii = 0; ii < 10; ii += 1)
280 for (globalii = 0; globalii < 10; globalii += 1)
281 c[globalii] += a[globalii] + ii;
284 // expected-error@+2 {{statement after '#pragma omp target simd' must be a for loop}}
285 #pragma omp target simd
286 for (auto &item : a) {
290 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
291 // expected-error@+2 {{increment expression must cause 'i' to increase on each iteration of OpenMP for loop}}
292 #pragma omp target simd
293 for (unsigned i = 9; i < 10; i--) {
297 int(*lb)[4] = nullptr;
298 #pragma omp target simd
299 for (int(*p)[4] = lb; p < lb + 8; ++p) {
302 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
303 #pragma omp target simd
304 for (int a{0}; a < 10; ++a) {
310 // Iterators allowed in openmp for-loops.
312 struct random_access_iterator_tag {};
313 template <class Iter>
314 struct iterator_traits {
315 typedef typename Iter::difference_type difference_type;
316 typedef typename Iter::iterator_category iterator_category;
318 template <class Iter>
319 typename iterator_traits<Iter>::difference_type
320 distance(Iter first, Iter last) { return first - last; }
325 Iter0(const Iter0 &) {}
326 Iter0 operator++() { return *this; }
327 Iter0 operator--() { return *this; }
328 bool operator<(Iter0 a) { return true; }
330 // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'Iter0' for 1st argument}}
331 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'Iter0' for 1st argument}}
332 int operator-(Iter0 a, Iter0 b) { return 0; }
335 Iter1(float f = 0.0f, double d = 0.0) {}
336 Iter1(const Iter1 &) {}
337 Iter1 operator++() { return *this; }
338 Iter1 operator--() { return *this; }
339 bool operator<(Iter1 a) { return true; }
340 bool operator>=(Iter1 a) { return false; }
345 GoodIter(const GoodIter &) {}
346 GoodIter(int fst, int snd) {}
347 GoodIter &operator=(const GoodIter &that) { return *this; }
348 GoodIter &operator=(const Iter0 &that) { return *this; }
349 GoodIter &operator+=(int x) { return *this; }
350 GoodIter &operator-=(int x) { return *this; }
351 explicit GoodIter(void *) {}
352 GoodIter operator++() { return *this; }
353 GoodIter operator--() { return *this; }
354 bool operator!() { return true; }
355 bool operator<(GoodIter a) { return true; }
356 bool operator<=(GoodIter a) { return true; }
357 bool operator>=(GoodIter a) { return false; }
358 typedef int difference_type;
359 typedef std::random_access_iterator_tag iterator_category;
361 // expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'GoodIter' for 2nd argument}}
362 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}}
363 int operator-(GoodIter a, GoodIter b) { return 0; }
364 // expected-note@+1 3 {{candidate function not viable: requires single argument 'a', but 2 arguments were provided}}
365 GoodIter operator-(GoodIter a) { return a; }
366 // expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'int' for 2nd argument}}
367 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}}
368 GoodIter operator-(GoodIter a, int v) { return GoodIter(); }
369 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'GoodIter' for 1st argument}}
370 GoodIter operator+(GoodIter a, int v) { return GoodIter(); }
371 // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'int' for 1st argument}}
372 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'int' for 1st argument}}
373 GoodIter operator-(int v, GoodIter a) { return GoodIter(); }
374 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'int' for 1st argument}}
375 GoodIter operator+(int v, GoodIter a) { return GoodIter(); }
377 int test_with_random_access_iterator() {
380 #pragma omp target simd
381 for (GoodIter I = begin; I < end; ++I)
383 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
384 #pragma omp target simd
385 for (GoodIter &I = begin; I < end; ++I)
387 #pragma omp target simd
388 for (GoodIter I = begin; I >= end; --I)
390 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
391 #pragma omp target simd
392 for (GoodIter I(begin); I < end; ++I)
394 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
395 #pragma omp target simd
396 for (GoodIter I(nullptr); I < end; ++I)
398 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
399 #pragma omp target simd
400 for (GoodIter I(0); I < end; ++I)
402 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
403 #pragma omp target simd
404 for (GoodIter I(1, 2); I < end; ++I)
406 #pragma omp target simd
407 for (begin = GoodIter(0); begin < end; ++begin)
409 // expected-error@+3 {{invalid operands to binary expression ('GoodIter' and 'const Iter0')}}
410 // expected-error@+2 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
411 #pragma omp target simd
412 for (begin = begin0; begin < end; ++begin)
414 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
415 #pragma omp target simd
416 for (++begin; begin < end; ++begin)
418 #pragma omp target simd
419 for (begin = end; begin < end; ++begin)
421 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}}
422 #pragma omp target simd
423 for (GoodIter I = begin; I - I; ++I)
425 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}}
426 #pragma omp target simd
427 for (GoodIter I = begin; begin < end; ++I)
429 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}}
430 #pragma omp target simd
431 for (GoodIter I = begin; !I; ++I)
433 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
434 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
435 #pragma omp target simd
436 for (GoodIter I = begin; I >= end; I = I + 1)
438 #pragma omp target simd
439 for (GoodIter I = begin; I >= end; I = I - 1)
441 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}}
442 #pragma omp target simd
443 for (GoodIter I = begin; I >= end; I = -I)
445 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
446 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
447 #pragma omp target simd
448 for (GoodIter I = begin; I >= end; I = 2 + I)
450 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}}
451 #pragma omp target simd
452 for (GoodIter I = begin; I >= end; I = 2 - I)
454 // expected-error@+2 {{invalid operands to binary expression ('Iter0' and 'int')}}
455 #pragma omp target simd
456 for (Iter0 I = begin0; I < end0; ++I)
458 // Initializer is constructor without params.
459 // expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}}
460 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
461 #pragma omp target simd
462 for (Iter0 I; I < end0; ++I)
465 // expected-error@+3 {{invalid operands to binary expression ('Iter1' and 'Iter1')}}
466 // expected-error@+2 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
467 #pragma omp target simd
468 for (Iter1 I = begin1; I < end1; ++I)
470 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
471 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
472 #pragma omp target simd
473 for (Iter1 I = begin1; I >= end1; ++I)
475 // expected-error@+5 {{invalid operands to binary expression ('Iter1' and 'float')}}
476 // expected-error@+4 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
477 // Initializer is constructor with all default params.
478 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
479 #pragma omp target simd
480 for (Iter1 I; I < end1; ++I) {
485 template <typename IT, int ST>
488 int dotest_lt(IT begin, IT end) {
489 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
490 // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}}
491 #pragma omp target simd
492 for (IT I = begin; I < end; I = I + ST) {
495 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
496 // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}}
497 #pragma omp target simd
498 for (IT I = begin; I <= end; I += ST) {
501 #pragma omp target simd
502 for (IT I = begin; I < end; ++I) {
511 template <typename IT, int ST = 0>
512 int dotest_gt(IT begin, IT end) {
513 // expected-note@+3 2 {{loop step is expected to be negative due to this condition}}
514 // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
515 #pragma omp target simd
516 for (IT I = begin; I >= end; I = I + ST) {
519 // expected-note@+3 2 {{loop step is expected to be negative due to this condition}}
520 // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
521 #pragma omp target simd
522 for (IT I = begin; I >= end; I += ST) {
526 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
527 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
528 #pragma omp target simd
529 for (IT I = begin; I >= end; ++I) {
533 #pragma omp target simd
534 for (IT I = begin; I < end; I += TC<int, ST>::step()) {
539 void test_with_template() {
541 TC<GoodIter, 100> t1;
542 TC<GoodIter, -100> t2;
543 t1.dotest_lt(begin, end);
544 t2.dotest_lt(begin, end); // expected-note {{in instantiation of member function 'TC<GoodIter, -100>::dotest_lt' requested here}}
545 dotest_gt(begin, end); // expected-note {{in instantiation of function template specialization 'dotest_gt<GoodIter, 0>' requested here}}
546 dotest_gt<unsigned, 10>(0, 100); // expected-note {{in instantiation of function template specialization 'dotest_gt<unsigned int, 10>' requested here}}
549 void test_loop_break() {
551 float a[N], b[N], c[N];
552 #pragma omp target simd
553 for (int i = 0; i < 10; i++) {
555 for (int j = 0; j < 10; ++j) {
557 break; // OK in nested loop
567 break; // expected-error {{'break' statement cannot be used in OpenMP for loop}}
570 break; // expected-error {{'break' statement cannot be used in OpenMP for loop}}
573 #pragma omp target simd
574 for (int i = 0; i < 10; i++) {
575 for (int j = 0; j < 10; j++) {
586 void test_loop_eh() {
588 float a[N], b[N], c[N];
589 #pragma omp target simd
590 for (int i = 0; i < 10; i++) {
592 try { // expected-error {{'try' statement cannot be used in OpenMP simd region}}
593 for (int j = 0; j < 10; ++j) {
595 throw a[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}}
597 throw a[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}}
600 throw a[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}}
601 return; // expected-error {{cannot return from OpenMP region}}
610 for (int j = 0; j < 10; j++) {
612 throw c[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}}
618 #pragma omp target simd
619 for (int i = 0; i < 10; ++i) {
621 void g() { throw 0; }
626 void test_loop_firstprivate_lastprivate() {
628 #pragma omp target simd lastprivate(s) firstprivate(s)
629 for (int i = 0; i < 16; ++i)