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llvm-project/clang/test/OpenMP/target_parallel_for_loop_messages.cpp
Animesh Kumar 0c6f2f629c [OpenMP] Update the default version of OpenMP to 5.1 
The default version of OpenMP is updated from 5.0 to 5.1 which means if -fopenmp is specified but -fopenmp-version is not specified with clang, the default version of OpenMP is taken to be 5.1.  After modifying the Frontend for that, various LIT tests were updated. This patch contains all such changes. At a high level, these are the patterns of changes observed in LIT tests -

  # RUN lines which mentioned `-fopenmp-version=50` need to kept only if the IR for version 5.0 and 5.1 are different. Otherwise only one RUN line with no version info(i.e. default version) needs to be there.

  # Test cases of this sort already had the RUN lines with respect to the older default version 5.0 and the version 5.1. Only swapping the version specification flag `-fopenmp-version` from newer version RUN line to older version RUN line is required.

  # Diagnostics: Remove the 5.0 version specific RUN lines if there was no difference in the Diagnostics messages with respect to the default 5.1.

  # Diagnostics: In case there was any difference in diagnostics messages between 5.0 and 5.1, mention version specific messages in tests.

  # If the test contained version specific ifdef's e.g. "#ifdef OMP5" but there were no RUN lines for any other version than 5.X, then bring the code guarded by ifdef's outside and remove the ifdef's.

  # Some tests had RUN lines for both 5.0 and 5.1 versions, but it is found that the IR for 5.0 is not different from the 5.1, therefore such RUN lines are redundant. So, such duplicated lines are removed.

  # To generate CHECK lines automatically, use the script llvm/utils/update_cc_test_checks.py

Reviewed By: saiislam, ABataev

Differential Revision: https://reviews.llvm.org/D129635

(cherry picked from commit 9dd2999907dc791136a75238a6000f69bf67cf4e)
2023-06-15 12:41:09 +05:30

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// RUN: %clang_cc1 -fsyntax-only -fopenmp -fopenmp-version=45 -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify=expected,omp4 %s -Wno-openmp-mapping -Wuninitialized
// RUN: %clang_cc1 -fsyntax-only -fopenmp -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify=expected,omp5 %s -Wno-openmp-mapping -Wuninitialized
// RUN: %clang_cc1 -fsyntax-only -fopenmp-simd -fopenmp-version=45 -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify=expected,omp4 %s -Wno-openmp-mapping -Wuninitialized
// RUN: %clang_cc1 -fsyntax-only -fopenmp-simd -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify=expected,omp5 %s -Wno-openmp-mapping -Wuninitialized
class S {
int a;
S() : a(0) {}
public:
S(int v) : a(v) {}
S(const S &s) : a(s.a) {}
};
static int sii;
// expected-note@+1 {{defined as threadprivate or thread local}}
#pragma omp threadprivate(sii)
static int globalii;
int test_iteration_spaces() {
const int N = 100;
float a[N], b[N], c[N];
int ii, jj, kk;
float fii;
double dii;
#pragma omp target parallel for
for (int i = 0; i < 10; i += 1) {
c[i] = a[i] + b[i];
}
#pragma omp target parallel for
for (char i = 0; i < 10; i++) {
c[i] = a[i] + b[i];
}
#pragma omp target parallel for
for (char i = 0; i < 10; i += '\1') {
c[i] = a[i] + b[i];
}
#pragma omp target parallel for
for (long long i = 0; i < 10; i++) {
c[i] = a[i] + b[i];
}
// expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'double'}}
#pragma omp target parallel for
for (long long i = 0; i < 10; i += 1.5) {
c[i] = a[i] + b[i];
}
#pragma omp target parallel for
for (long long i = 0; i < 'z'; i += 1u) {
c[i] = a[i] + b[i];
}
// expected-error@+2 {{variable must be of integer or random access iterator type}}
#pragma omp target parallel for
for (float fi = 0; fi < 10.0; fi++) {
c[(int)fi] = a[(int)fi] + b[(int)fi];
}
// expected-error@+2 {{variable must be of integer or random access iterator type}}
#pragma omp target parallel for
for (double fi = 0; fi < 10.0; fi++) {
c[(int)fi] = a[(int)fi] + b[(int)fi];
}
// expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp target parallel for
for (int &ref = ii; ref < 10; ref++) {
}
// expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp target parallel for
for (int i; i < 10; i++)
c[i] = a[i];
// expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp target parallel for
for (int i = 0, j = 0; i < 10; ++i)
c[i] = a[i];
// expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp target parallel for
for (; ii < 10; ++ii)
c[ii] = a[ii];
// expected-warning@+3 {{expression result unused}}
// expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp target parallel for
for (ii + 1; ii < 10; ++ii)
c[ii] = a[ii];
// expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp target parallel for
for (c[ii] = 0; ii < 10; ++ii)
c[ii] = a[ii];
// Ok to skip parenthesises.
#pragma omp target parallel for
for (((ii)) = 0; ii < 10; ++ii)
c[ii] = a[ii];
// 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'}}
#pragma omp target parallel for
for (int i = 0; i; i++)
c[i] = a[i];
// 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'}}
// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'i'}}
#pragma omp target parallel for
for (int i = 0; jj < kk; ii++)
c[i] = a[i];
// 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'}}
#pragma omp target parallel for
for (int i = 0; !!i; i++)
c[i] = a[i];
// omp4-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}}
#pragma omp target parallel for
for (int i = 0; i != 1; i++)
c[i] = a[i];
// 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'}}
#pragma omp target parallel for
for (int i = 0;; i++)
c[i] = a[i];
// Ok.
#pragma omp target parallel for
for (int i = 11; i > 10; i--)
c[i] = a[i];
// Ok.
#pragma omp target parallel for
for (int i = 0; i < 10; ++i)
c[i] = a[i];
// Ok.
#pragma omp target parallel for
for (ii = 0; ii < 10; ++ii)
c[ii] = a[ii];
// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
#pragma omp target parallel for
for (ii = 0; ii < 10; ++jj)
c[ii] = a[jj];
// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
#pragma omp target parallel for
for (ii = 0; ii < 10; ++++ii)
c[ii] = a[ii];
// Ok but undefined behavior (in general, cannot check that incr
// is really loop-invariant).
#pragma omp target parallel for
for (ii = 0; ii < 10; ii = ii + ii)
c[ii] = a[ii];
// expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'float'}}
#pragma omp target parallel for
for (ii = 0; ii < 10; ii = ii + 1.0f)
c[ii] = a[ii];
// Ok - step was converted to integer type.
#pragma omp target parallel for
for (ii = 0; ii < 10; ii = ii + (int)1.1f)
c[ii] = a[ii];
// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
#pragma omp target parallel for
for (ii = 0; ii < 10; jj = ii + 2)
c[ii] = a[ii];
// expected-warning@+3 {{relational comparison result unused}}
// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
#pragma omp target parallel for
for (ii = 0; ii<10; jj> kk + 2)
c[ii] = a[ii];
// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
#pragma omp target parallel for
for (ii = 0; ii < 10;)
c[ii] = a[ii];
// expected-warning@+3 {{expression result unused}}
// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
#pragma omp target parallel for
for (ii = 0; ii < 10; !ii)
c[ii] = a[ii];
// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
#pragma omp target parallel for
for (ii = 0; ii < 10; ii ? ++ii : ++jj)
c[ii] = a[ii];
// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
#pragma omp target parallel for
for (ii = 0; ii < 10; ii = ii < 10)
c[ii] = a[ii];
// expected-note@+3 {{loop step is expected to be positive due to this condition}}
// expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
#pragma omp target parallel for
for (ii = 0; ii < 10; ii = ii + 0)
c[ii] = a[ii];
// expected-note@+3 {{loop step is expected to be positive due to this condition}}
// expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
#pragma omp target parallel for
for (ii = 0; ii < 10; ii = ii + (int)(0.8 - 0.45))
c[ii] = a[ii];
// expected-note@+3 {{loop step is expected to be positive due to this condition}}
// expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
#pragma omp target parallel for
for (ii = 0; (ii) < 10; ii -= 25)
c[ii] = a[ii];
// expected-note@+3 {{loop step is expected to be positive due to this condition}}
// expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
#pragma omp target parallel for
for (ii = 0; (ii < 10); ii -= 0)
c[ii] = a[ii];
// expected-note@+3 {{loop step is expected to be negative due to this condition}}
// expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}}
#pragma omp target parallel for
for (ii = 0; ii > 10; (ii += 0))
c[ii] = a[ii];
// expected-note@+3 {{loop step is expected to be positive due to this condition}}
// expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
#pragma omp target parallel for
for (ii = 0; ii < 10; (ii) = (1 - 1) + (ii))
c[ii] = a[ii];
// expected-note@+3 {{loop step is expected to be negative due to this condition}}
// expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}}
#pragma omp target parallel for
for ((ii = 0); ii > 10; (ii -= 0))
c[ii] = a[ii];
// expected-note@+3 {{loop step is expected to be positive due to this condition}}
// expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
#pragma omp target parallel for
for (ii = 0; (ii < 10); (ii -= 0))
c[ii] = a[ii];
// expected-note@+2 {{defined as firstprivate}}
// expected-error@+2 {{loop iteration variable in the associated loop of 'omp target parallel for' directive may not be firstprivate, predetermined as private}}
#pragma omp target parallel for firstprivate(ii)
for (ii = 0; ii < 10; ii++)
c[ii] = a[ii];
// expected-note@+2 {{defined as linear}}
// expected-error@+2 {{loop iteration variable in the associated loop of 'omp target parallel for' directive may not be linear, predetermined as private}}
#pragma omp target parallel for linear(ii)
for (ii = 0; ii < 10; ii++)
c[ii] = a[ii];
#pragma omp target parallel for private(ii)
for (ii = 0; ii < 10; ii++)
c[ii] = a[ii];
#pragma omp target parallel for lastprivate(ii)
for (ii = 0; ii < 10; ii++)
c[ii] = a[ii];
{
// expected-error@+2 {{loop iteration variable in the associated loop of 'omp target parallel for' directive may not be threadprivate or thread local, predetermined as private}}
#pragma omp target parallel for
for (sii = 0; sii < 10; sii += 1)
c[sii] = a[sii];
}
{
#pragma omp target parallel for
for (globalii = 0; globalii < 10; globalii += 1)
c[globalii] = a[globalii];
}
{
#pragma omp target parallel for collapse(2)
for (ii = 0; ii < 10; ii += 1)
for (globalii = 0; globalii < 10; globalii += 1)
c[globalii] += a[globalii] + ii;
}
// omp4-error@+2 {{statement after '#pragma omp target parallel for' must be a for loop}}
#pragma omp target parallel for
for (auto &item : a) {
item = item + 1;
}
// expected-note@+3 {{loop step is expected to be positive due to this condition}}
// expected-error@+2 {{increment expression must cause 'i' to increase on each iteration of OpenMP for loop}}
#pragma omp target parallel for
for (unsigned i = 9; i < 10; i--) {
c[i] = a[i] + b[i];
}
int(*lb)[4] = nullptr;
#pragma omp target parallel for
for (int(*p)[4] = lb; p < lb + 8; ++p) {
}
// expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp target parallel for
for (int a{0}; a < 10; ++a) {
}
return 0;
}
// Iterators allowed in openmp for-loops.
namespace std {
struct random_access_iterator_tag {};
template <class Iter>
struct iterator_traits {
typedef typename Iter::difference_type difference_type;
typedef typename Iter::iterator_category iterator_category;
};
template <class Iter>
typename iterator_traits<Iter>::difference_type
distance(Iter first, Iter last) { return first - last; }
}
class Iter0 {
public:
Iter0() {}
Iter0(const Iter0 &) {}
Iter0 operator++() { return *this; }
Iter0 operator--() { return *this; }
bool operator<(Iter0 a) { return true; }
};
// expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'Iter0' for 1st argument}}
// expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'Iter0' for 1st argument}}
int operator-(Iter0 a, Iter0 b) { return 0; }
class Iter1 {
public:
Iter1(float f = 0.0f, double d = 0.0) {}
Iter1(const Iter1 &) {}
Iter1 operator++() { return *this; }
Iter1 operator--() { return *this; }
bool operator<(Iter1 a) { return true; }
bool operator>=(Iter1 a) { return false; }
};
class GoodIter {
public:
GoodIter() {}
GoodIter(const GoodIter &) {}
GoodIter(int fst, int snd) {}
GoodIter &operator=(const GoodIter &that) { return *this; }
GoodIter &operator=(const Iter0 &that) { return *this; }
GoodIter &operator+=(int x) { return *this; }
GoodIter &operator-=(int x) { return *this; }
explicit GoodIter(void *) {}
GoodIter operator++() { return *this; }
GoodIter operator--() { return *this; }
bool operator!() { return true; }
bool operator<(GoodIter a) { return true; }
bool operator<=(GoodIter a) { return true; }
bool operator>=(GoodIter a) { return false; }
typedef int difference_type;
typedef std::random_access_iterator_tag iterator_category;
};
// expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'GoodIter' for 2nd argument}}
// expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}}
int operator-(GoodIter a, GoodIter b) { return 0; }
// expected-note@+1 3 {{candidate function not viable: requires single argument 'a', but 2 arguments were provided}}
GoodIter operator-(GoodIter a) { return a; }
// expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'int' for 2nd argument}}
// expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}}
GoodIter operator-(GoodIter a, int v) { return GoodIter(); }
// expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'GoodIter' for 1st argument}}
GoodIter operator+(GoodIter a, int v) { return GoodIter(); }
// expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'int' for 1st argument}}
// expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'int' for 1st argument}}
GoodIter operator-(int v, GoodIter a) { return GoodIter(); }
// expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'int' for 1st argument}}
GoodIter operator+(int v, GoodIter a) { return GoodIter(); }
int test_with_random_access_iterator() {
GoodIter begin, end;
Iter0 begin0, end0;
#pragma omp target parallel for
for (GoodIter I = begin; I < end; ++I)
++I;
// expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp target parallel for
for (GoodIter &I = begin; I < end; ++I)
++I;
#pragma omp target parallel for
for (GoodIter I = begin; I >= end; --I)
++I;
// expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp target parallel for
for (GoodIter I(begin); I < end; ++I)
++I;
// expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp target parallel for
for (GoodIter I(nullptr); I < end; ++I)
++I;
// expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp target parallel for
for (GoodIter I(0); I < end; ++I)
++I;
// expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp target parallel for
for (GoodIter I(1, 2); I < end; ++I)
++I;
#pragma omp target parallel for
for (begin = GoodIter(0); begin < end; ++begin)
++begin;
// expected-error@+3 {{invalid operands to binary expression ('GoodIter' and 'const Iter0')}}
// expected-error@+2 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
#pragma omp target parallel for
for (begin = begin0; begin < end; ++begin)
++begin;
// expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp target parallel for
for (++begin; begin < end; ++begin)
++begin;
#pragma omp target parallel for
for (begin = end; begin < end; ++begin)
++begin;
// 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'}}
#pragma omp target parallel for
for (GoodIter I = begin; I - I; ++I)
++I;
// 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'}}
#pragma omp target parallel for
for (GoodIter I = begin; begin < end; ++I)
++I;
// 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'}}
#pragma omp target parallel for
for (GoodIter I = begin; !I; ++I)
++I;
// expected-note@+3 {{loop step is expected to be negative due to this condition}}
// expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
#pragma omp target parallel for
for (GoodIter I = begin; I >= end; I = I + 1)
++I;
#pragma omp target parallel for
for (GoodIter I = begin; I >= end; I = I - 1)
++I;
// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}}
#pragma omp target parallel for
for (GoodIter I = begin; I >= end; I = -I)
++I;
// expected-note@+3 {{loop step is expected to be negative due to this condition}}
// expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
#pragma omp target parallel for
for (GoodIter I = begin; I >= end; I = 2 + I)
++I;
// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}}
#pragma omp target parallel for
for (GoodIter I = begin; I >= end; I = 2 - I)
++I;
// expected-error@+2 {{invalid operands to binary expression ('Iter0' and 'int')}}
#pragma omp target parallel for
for (Iter0 I = begin0; I < end0; ++I)
++I;
// Initializer is constructor without params.
// expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}}
// expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp target parallel for
for (Iter0 I; I < end0; ++I)
++I;
Iter1 begin1, end1;
// expected-error@+3 {{invalid operands to binary expression ('Iter1' and 'Iter1')}}
// expected-error@+2 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
#pragma omp target parallel for
for (Iter1 I = begin1; I < end1; ++I)
++I;
// expected-note@+3 {{loop step is expected to be negative due to this condition}}
// expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
#pragma omp target parallel for
for (Iter1 I = begin1; I >= end1; ++I)
++I;
// expected-error@+5 {{invalid operands to binary expression ('Iter1' and 'float')}}
// expected-error@+4 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
// Initializer is constructor with all default params.
// expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp target parallel for
for (Iter1 I; I < end1; ++I) {
}
return 0;
}
template <typename IT, int ST>
class TC {
public:
int dotest_lt(IT begin, IT end) {
// expected-note@+3 {{loop step is expected to be positive due to this condition}}
// expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}}
#pragma omp target parallel for
for (IT I = begin; I < end; I = I + ST) {
++I;
}
// expected-note@+3 {{loop step is expected to be positive due to this condition}}
// expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}}
#pragma omp target parallel for
for (IT I = begin; I <= end; I += ST) {
++I;
}
#pragma omp target parallel for
for (IT I = begin; I < end; ++I) {
++I;
}
}
static IT step() {
return IT(ST);
}
};
template <typename IT, int ST = 0>
int dotest_gt(IT begin, IT end) {
// expected-note@+3 2 {{loop step is expected to be negative due to this condition}}
// expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
#pragma omp target parallel for
for (IT I = begin; I >= end; I = I + ST) {
++I;
}
// expected-note@+3 2 {{loop step is expected to be negative due to this condition}}
// expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
#pragma omp target parallel for
for (IT I = begin; I >= end; I += ST) {
++I;
}
// expected-note@+3 {{loop step is expected to be negative due to this condition}}
// expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
#pragma omp target parallel for
for (IT I = begin; I >= end; ++I) {
++I;
}
#pragma omp target parallel for
for (IT I = begin; I < end; I += TC<int, ST>::step()) {
++I;
}
}
void test_with_template() {
GoodIter begin, end;
TC<GoodIter, 100> t1;
TC<GoodIter, -100> t2;
t1.dotest_lt(begin, end);
t2.dotest_lt(begin, end); // expected-note {{in instantiation of member function 'TC<GoodIter, -100>::dotest_lt' requested here}}
dotest_gt(begin, end); // expected-note {{in instantiation of function template specialization 'dotest_gt<GoodIter, 0>' requested here}}
dotest_gt<unsigned, 10>(0, 100); // expected-note {{in instantiation of function template specialization 'dotest_gt<unsigned int, 10>' requested here}}
}
void test_loop_break() {
const int N = 100;
float a[N], b[N], c[N];
#pragma omp target parallel for
for (int i = 0; i < 10; i++) {
c[i] = a[i] + b[i];
for (int j = 0; j < 10; ++j) {
if (a[i] > b[j])
break; // OK in nested loop
}
switch (i) {
case 1:
b[i]++;
break;
default:
break;
}
if (c[i] > 10)
break; // expected-error {{'break' statement cannot be used in OpenMP for loop}}
if (c[i] > 11)
break; // expected-error {{'break' statement cannot be used in OpenMP for loop}}
}
#pragma omp target parallel for
for (int i = 0; i < 10; i++) {
for (int j = 0; j < 10; j++) {
c[i] = a[i] + b[i];
if (c[i] > 10) {
if (c[i] < 20) {
break; // OK
}
}
}
}
}
void test_loop_eh() {
const int N = 100;
float a[N], b[N], c[N];
#pragma omp target parallel for
for (int i = 0; i < 10; i++) {
c[i] = a[i] + b[i];
try {
for (int j = 0; j < 10; ++j) {
if (a[i] > b[j])
throw a[i];
}
throw a[i];
} catch (float f) {
if (f > 0.1)
throw a[i];
return; // expected-error {{cannot return from OpenMP region}}
}
switch (i) {
case 1:
b[i]++;
break;
default:
break;
}
for (int j = 0; j < 10; j++) {
if (c[i] > 10)
throw c[i];
}
}
if (c[9] > 10)
throw c[9]; // OK
#pragma omp target parallel for
for (int i = 0; i < 10; ++i) {
struct S {
void g() { throw 0; }
};
}
}
void test_loop_firstprivate_lastprivate() {
S s(4);
#pragma omp target parallel for lastprivate(s) firstprivate(s)
for (int i = 0; i < 16; ++i)
;
}
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