1 // RUN: %clang_cc1 -fsyntax-only -fopenmp -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify %s
3 // RUN: %clang_cc1 -fsyntax-only -fopenmp-simd -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify %s
6 // expected-note@+1 {{defined as threadprivate or thread local}}
7 #pragma omp threadprivate(sii)
10 int test_iteration_spaces() {
12 float a[N], b[N], c[N];
17 for (int i = 0; i < 10; i+=1) {
21 for (char i = 0; i < 10; i++) {
25 for (char i = 0; i < 10; i+='\1') {
29 for (long long i = 0; i < 10; i++) {
32 // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'double'}}
34 for (long long i = 0; i < 10; i+=1.5) {
38 for (long long i = 0; i < 'z'; i+=1u) {
41 // expected-error@+2 {{variable must be of integer or random access iterator type}}
43 for (float fi = 0; fi < 10.0; fi++) {
44 c[(int)fi] = a[(int)fi] + b[(int)fi];
46 // expected-error@+2 {{variable must be of integer or random access iterator type}}
48 for (double fi = 0; fi < 10.0; fi++) {
49 c[(int)fi] = a[(int)fi] + b[(int)fi];
51 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
53 for (int &ref = ii; ref < 10; ref++) {
55 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
57 for (int i; i < 10; i++)
60 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
62 for (int i = 0, j = 0; i < 10; ++i)
65 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
70 // expected-warning@+3 {{expression result unused}}
71 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
73 for (ii + 1;ii < 10; ++ii)
76 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
78 for (c[ii] = 0;ii < 10; ++ii)
81 // Ok to skip parenthesises.
83 for (((ii)) = 0;ii < 10; ++ii)
86 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}}
88 for (int i = 0; i; i++)
91 // expected-error@+3 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}}
92 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'i'}}
94 for (int i = 0; jj < kk; ii++)
97 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}}
99 for (int i = 0; !!i; i++)
104 for (int i = 0; i != 1; i++)
107 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}}
109 for (int i = 0; ; i++)
114 for (int i = 11; i > 10; i--)
119 for (int i = 0; i < 10; ++i)
124 for (ii = 0; ii < 10; ++ii)
127 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
129 for (ii = 0; ii < 10; ++jj)
132 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
134 for (ii = 0; ii < 10; ++ ++ ii)
137 // Ok but undefined behavior (in general, cannot check that incr
138 // is really loop-invariant).
140 for (ii = 0; ii < 10; ii = ii + ii)
143 // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'float'}}
145 for (ii = 0; ii < 10; ii = ii + 1.0f)
148 // Ok - step was converted to integer type.
150 for (ii = 0; ii < 10; ii = ii + (int)1.1f)
153 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
155 for (ii = 0; ii < 10; jj = ii + 2)
158 // expected-warning@+3 {{relational comparison result unused}}
159 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
161 for (ii = 0; ii < 10; jj > kk + 2)
164 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
166 for (ii = 0; ii < 10;)
169 // expected-warning@+3 {{expression result unused}}
170 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
172 for (ii = 0; ii < 10; !ii)
175 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
177 for (ii = 0; ii < 10; ii ? ++ii : ++jj)
180 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
182 for (ii = 0; ii < 10; ii = ii < 10)
185 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
186 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
188 for (ii = 0; ii < 10; ii = ii + 0)
191 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
192 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
194 for (ii = 0; ii < 10; ii = ii + (int)(0.8 - 0.45))
197 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
198 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
200 for (ii = 0; (ii) < 10; ii-=25)
203 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
204 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
206 for (ii = 0; (ii < 10); ii-=0)
209 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
210 // expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}}
212 for (ii = 0; ii > 10; (ii+=0))
215 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
216 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
218 for (ii = 0; ii < 10; (ii) = (1-1)+(ii))
221 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
222 // expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}}
224 for ((ii = 0); ii > 10; (ii-=0))
227 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
228 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
230 for (ii = 0; (ii < 10); (ii-=0))
233 // expected-note@+2 {{defined as private}}
234 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp simd' directive may not be private, predetermined as linear}}
235 #pragma omp simd private(ii)
236 for (ii = 0; ii < 10; ii++)
239 // expected-error@+1 {{unexpected OpenMP clause 'shared' in directive '#pragma omp simd'}}
240 #pragma omp simd shared(ii)
241 for (ii = 0; ii < 10; ii++)
244 #pragma omp simd linear(ii)
245 for (ii = 0; ii < 10; ii++)
248 #pragma omp simd lastprivate(ii) linear(jj) collapse(2) // expected-note {{defined as linear}}
249 for (ii = 0; ii < 10; ii++)
250 for (jj = 0; jj < 10; jj++) // expected-error {{loop iteration variable in the associated loop of 'omp simd' directive may not be linear, predetermined as lastprivate}}
256 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp simd' directive may not be threadprivate or thread local, predetermined as linear}}
258 for (sii = 0; sii < 10; sii+=1)
265 for (globalii = 0; globalii < 10; globalii+=1)
266 c[globalii] = a[globalii];
271 #pragma omp simd collapse(2)
272 for (ii = 0; ii < 10; ii += 1)
273 for (globalii = 0; globalii < 10; globalii += 1)
274 c[globalii] += a[globalii] + ii;
277 // expected-error@+2 {{statement after '#pragma omp simd' must be a for loop}}
279 for (auto &item : a) {
283 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
284 // expected-error@+2 {{increment expression must cause 'i' to increase on each iteration of OpenMP for loop}}
286 for (unsigned i = 9; i < 10; i--) {
290 int (*lb)[4] = nullptr;
292 for (int (*p)[4] = lb; p < lb + 8; ++p) {
295 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
297 for (int a{0}; a<10; ++a) {
303 // Iterators allowed in openmp for-loops.
305 struct random_access_iterator_tag { };
306 template <class Iter> struct iterator_traits {
307 typedef typename Iter::difference_type difference_type;
308 typedef typename Iter::iterator_category iterator_category;
310 template <class Iter>
311 typename iterator_traits<Iter>::difference_type
312 distance(Iter first, Iter last) { return first - last; }
317 Iter0(const Iter0 &) { }
318 Iter0 operator ++() { return *this; }
319 Iter0 operator --() { return *this; }
320 Iter0 operator + (int delta) { return *this; }
321 bool operator <(Iter0 a) { return true; }
323 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'Iter0' for 1st argument}}
324 int operator -(Iter0 a, Iter0 b) { return 0; }
327 Iter1(float f=0.0f, double d=0.0) { }
328 Iter1(const Iter1 &) { }
329 Iter1 operator ++() { return *this; }
330 Iter1 operator --() { return *this; }
331 bool operator <(Iter1 a) { return true; }
332 bool operator >=(Iter1 a) { return false; }
337 GoodIter(const GoodIter &) { }
338 GoodIter(int fst, int snd) { }
339 GoodIter &operator =(const GoodIter &that) { return *this; }
340 GoodIter &operator =(const Iter0 &that) { return *this; }
341 GoodIter &operator +=(int x) { return *this; }
342 explicit GoodIter(void *) { }
343 GoodIter operator ++() { return *this; }
344 GoodIter operator --() { return *this; }
345 bool operator !() { return true; }
346 bool operator <(GoodIter a) { return true; }
347 bool operator <=(GoodIter a) { return true; }
348 bool operator >=(GoodIter a) { return false; }
349 typedef int difference_type;
350 typedef std::random_access_iterator_tag iterator_category;
352 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}}
353 int operator -(GoodIter a, GoodIter b) { return 0; }
354 // expected-note@+1 2 {{candidate function not viable: requires single argument 'a', but 2 arguments were provided}}
355 GoodIter operator -(GoodIter a) { return a; }
356 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}}
357 GoodIter operator -(GoodIter a, int v) { return GoodIter(); }
358 GoodIter operator +(GoodIter a, int v) { return GoodIter(); }
359 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'int' for 1st argument}}
360 GoodIter operator -(int v, GoodIter a) { return GoodIter(); }
361 GoodIter operator +(int v, GoodIter a) { return GoodIter(); }
363 int test_with_random_access_iterator() {
367 for (GoodIter I = begin; I < end; ++I)
369 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
371 for (GoodIter &I = begin; I < end; ++I)
374 for (GoodIter I = begin; I >= end; --I)
376 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
378 for (GoodIter I(begin); I < end; ++I)
380 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
382 for (GoodIter I(nullptr); I < end; ++I)
384 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
386 for (GoodIter I(0); I < end; ++I)
388 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
390 for (GoodIter I(1,2); I < end; ++I)
393 for (begin = GoodIter(0); begin < end; ++begin)
396 for (begin = GoodIter(1,2); begin < end; ++begin)
398 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
400 for (++begin; begin < end; ++begin)
403 for (begin = end; begin < end; ++begin)
405 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}}
407 for (GoodIter I = begin; I - I; ++I)
409 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}}
411 for (GoodIter I = begin; begin < end; ++I)
413 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}}
415 for (GoodIter I = begin; !I; ++I)
417 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
418 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
420 for (GoodIter I = begin; I >= end; I = I + 1)
423 for (GoodIter I = begin; I >= end; I = I - 1)
425 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}}
427 for (GoodIter I = begin; I >= end; I = -I)
429 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
430 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
432 for (GoodIter I = begin; I >= end; I = 2 + I)
434 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}}
436 for (GoodIter I = begin; I >= end; I = 2 - I)
439 for (Iter0 I = begin0; I < end0; ++I)
442 // Initializer is constructor without params.
443 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
445 for (Iter0 I; I < end0; ++I)
449 // expected-error@+3 {{invalid operands to binary expression ('Iter1' and 'Iter1')}}
450 // expected-error@+2 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
452 for (Iter1 I = begin1; I < end1; ++I)
454 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
455 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
457 for (Iter1 I = begin1; I >= end1; ++I)
460 // Initializer is constructor with all default params.
461 // expected-error@+4 {{invalid operands to binary expression ('Iter1' and 'float')}}
462 // expected-error@+3 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
463 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
465 for (Iter1 I; I < end1; ++I) {
471 template <typename IT, int ST> class TC {
473 int dotest_lt(IT begin, IT end) {
474 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
475 // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}}
477 for (IT I = begin; I < end; I = I + ST) {
480 // expected-note@+3 {{loop step is expected to be positive due to this condition}}
481 // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}}
483 for (IT I = begin; I <= end; I += ST) {
487 for (IT I = begin; I < end; ++I) {
496 template <typename IT, int ST=0> int dotest_gt(IT begin, IT end) {
497 // expected-note@+3 2 {{loop step is expected to be negative due to this condition}}
498 // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
500 for (IT I = begin; I >= end; I = I + ST) {
503 // expected-note@+3 2 {{loop step is expected to be negative due to this condition}}
504 // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
506 for (IT I = begin; I >= end; I += ST) {
510 // expected-note@+3 {{loop step is expected to be negative due to this condition}}
511 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
513 for (IT I = begin; I >= end; ++I) {
518 for (IT I = begin; I < end; I+=TC<int,ST>::step()) {
523 void test_with_template() {
525 TC<GoodIter, 100> t1;
526 TC<GoodIter, -100> t2;
527 t1.dotest_lt(begin, end);
528 t2.dotest_lt(begin, end); // expected-note {{in instantiation of member function 'TC<GoodIter, -100>::dotest_lt' requested here}}
529 dotest_gt(begin, end); // expected-note {{in instantiation of function template specialization 'dotest_gt<GoodIter, 0>' requested here}}
530 dotest_gt<unsigned, 10>(0, 100); // expected-note {{in instantiation of function template specialization 'dotest_gt<unsigned int, 10>' requested here}}
533 void test_loop_break() {
535 float a[N], b[N], c[N];
537 for (int i = 0; i < 10; i++) {
539 for (int j = 0; j < 10; ++j) {
541 break; // OK in nested loop
551 break; // expected-error {{'break' statement cannot be used in OpenMP for loop}}
554 break; // expected-error {{'break' statement cannot be used in OpenMP for loop}}
558 for (int i = 0; i < 10; i++) {
559 for (int j = 0; j < 10; j++) {
570 void test_loop_eh() {
572 float a[N], b[N], c[N];
574 for (int i = 0; i < 10; i++) {
576 try { // expected-error {{'try' statement cannot be used in OpenMP simd region}}
577 for (int j = 0; j < 10; ++j) {
579 throw a[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}}
581 throw a[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}}
585 throw a[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}}
586 return; // expected-error {{cannot return from OpenMP region}}
595 for (int j = 0; j < 10; j++) {
597 throw c[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}}
604 for (int i = 0; i < 10; ++i) {
606 void g() { throw 0; }