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llvm-project/clang/test/OpenMP/taskloop_loop_messages.cpp
Alexey Bataev f3c832a970 [OpenMP] Fix handling of clause on wrong directive, by Joel. E. Denny 
Summary:
First, this patch fixes an assert failure when, for example, "omp for"
has num_teams.

Second, this patch prevents duplicate diagnostics when, for example,
"omp for" has uniform.

This patch makes the general assumption (even where it doesn't
necessarily fix an existing bug) that it is worthless to perform sema
for a clause that appears on a directive on which OpenMP does not
permit that clause.  However, due to this assumption, this patch
suppresses some diagnostics that were expected in the test suite.  I
assert that those diagnostics were likely just distracting to the
user.

Reviewers: ABataev

Reviewed By: ABataev

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D41841

llvm-svn: 322107
2018-01-09 19:21:04 +00:00

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// RUN: %clang_cc1 -fsyntax-only -fopenmp -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify %s
// RUN: %clang_cc1 -fsyntax-only -fopenmp-simd -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify %s
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;
// Currently, we cannot use "0" for global register variables.
// register int reg0 __asm__("0");
int reg0;
int test_iteration_spaces() {
const int N = 100;
float a[N], b[N], c[N];
int ii, jj, kk;
float fii;
double dii;
register int reg; // expected-warning {{'register' storage class specifier is deprecated}}
#pragma omp parallel
#pragma omp taskloop
for (int i = 0; i < 10; i += 1) {
c[i] = a[i] + b[i];
}
#pragma omp parallel
#pragma omp taskloop
for (char i = 0; i < 10; i++) {
c[i] = a[i] + b[i];
}
#pragma omp parallel
#pragma omp taskloop
for (char i = 0; i < 10; i += '\1') {
c[i] = a[i] + b[i];
}
#pragma omp parallel
#pragma omp taskloop
for (long long i = 0; i < 10; i++) {
c[i] = a[i] + b[i];
}
#pragma omp parallel
// expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'double'}}
#pragma omp taskloop
for (long long i = 0; i < 10; i += 1.5) {
c[i] = a[i] + b[i];
}
#pragma omp parallel
#pragma omp taskloop
for (long long i = 0; i < 'z'; i += 1u) {
c[i] = a[i] + b[i];
}
#pragma omp parallel
// expected-error@+2 {{variable must be of integer or random access iterator type}}
#pragma omp taskloop
for (float fi = 0; fi < 10.0; fi++) {
c[(int)fi] = a[(int)fi] + b[(int)fi];
}
#pragma omp parallel
// expected-error@+2 {{variable must be of integer or random access iterator type}}
#pragma omp taskloop
for (double fi = 0; fi < 10.0; fi++) {
c[(int)fi] = a[(int)fi] + b[(int)fi];
}
#pragma omp parallel
// expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp taskloop
for (int &ref = ii; ref < 10; ref++) {
}
#pragma omp parallel
// expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp taskloop
for (int i; i < 10; i++)
c[i] = a[i];
#pragma omp parallel
// expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp taskloop
for (int i = 0, j = 0; i < 10; ++i)
c[i] = a[i];
#pragma omp parallel
// expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp taskloop
for (; ii < 10; ++ii)
c[ii] = a[ii];
#pragma omp parallel
// 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 taskloop
for (ii + 1; ii < 10; ++ii)
c[ii] = a[ii];
#pragma omp parallel
// expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp taskloop
for (c[ii] = 0; ii < 10; ++ii)
c[ii] = a[ii];
#pragma omp parallel
// Ok to skip parenthesises.
#pragma omp taskloop
for (((ii)) = 0; ii < 10; ++ii)
c[ii] = a[ii];
#pragma omp parallel
// expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}}
#pragma omp taskloop
for (int i = 0; i; i++)
c[i] = a[i];
#pragma omp parallel
// expected-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 taskloop
for (int i = 0; jj < kk; ii++)
c[i] = a[i];
#pragma omp parallel
// expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}}
#pragma omp taskloop
for (int i = 0; !!i; i++)
c[i] = a[i];
#pragma omp parallel
// expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}}
#pragma omp taskloop
for (int i = 0; i != 1; i++)
c[i] = a[i];
#pragma omp parallel
// expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}}
#pragma omp taskloop
for (int i = 0;; i++)
c[i] = a[i];
#pragma omp parallel
// Ok.
#pragma omp taskloop
for (int i = 11; i > 10; i--)
c[i] = a[i];
#pragma omp parallel
// Ok.
#pragma omp taskloop
for (int i = 0; i < 10; ++i)
c[i] = a[i];
#pragma omp parallel
// Ok.
#pragma omp taskloop
for (ii = 0; ii < 10; ++ii)
c[ii] = a[ii];
#pragma omp parallel
// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
#pragma omp taskloop
for (ii = 0; ii < 10; ++jj)
c[ii] = a[jj];
#pragma omp parallel
// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
#pragma omp taskloop
for (ii = 0; ii < 10; ++++ii)
c[ii] = a[ii];
#pragma omp parallel
// Ok but undefined behavior (in general, cannot check that incr
// is really loop-invariant).
#pragma omp taskloop
for (ii = 0; ii < 10; ii = ii + ii)
c[ii] = a[ii];
#pragma omp parallel
// expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'float'}}
#pragma omp taskloop
for (ii = 0; ii < 10; ii = ii + 1.0f)
c[ii] = a[ii];
#pragma omp parallel
// Ok - step was converted to integer type.
#pragma omp taskloop
for (ii = 0; ii < 10; ii = ii + (int)1.1f)
c[ii] = a[ii];
#pragma omp parallel
// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
#pragma omp taskloop
for (ii = 0; ii < 10; jj = ii + 2)
c[ii] = a[ii];
#pragma omp parallel
// 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 taskloop
for (ii = 0; ii<10; jj> kk + 2)
c[ii] = a[ii];
#pragma omp parallel
// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
#pragma omp taskloop
for (ii = 0; ii < 10;)
c[ii] = a[ii];
#pragma omp parallel
// 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 taskloop
for (ii = 0; ii < 10; !ii)
c[ii] = a[ii];
#pragma omp parallel
// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
#pragma omp taskloop
for (ii = 0; ii < 10; ii ? ++ii : ++jj)
c[ii] = a[ii];
#pragma omp parallel
// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
#pragma omp taskloop
for (ii = 0; ii < 10; ii = ii < 10)
c[ii] = a[ii];
#pragma omp parallel
// 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 taskloop
for (ii = 0; ii < 10; ii = ii + 0)
c[ii] = a[ii];
#pragma omp parallel
// 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 taskloop
for (ii = 0; ii < 10; ii = ii + (int)(0.8 - 0.45))
c[ii] = a[ii];
#pragma omp parallel
// 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 taskloop
for (ii = 0; (ii) < 10; ii -= 25)
c[ii] = a[ii];
#pragma omp parallel
// 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 taskloop
for (ii = 0; (ii < 10); ii -= 0)
c[ii] = a[ii];
#pragma omp parallel
// 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 taskloop
for (ii = 0; ii > 10; (ii += 0))
c[ii] = a[ii];
#pragma omp parallel
// 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 taskloop
for (ii = 0; ii < 10; (ii) = (1 - 1) + (ii))
c[ii] = a[ii];
#pragma omp parallel
// 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 taskloop
for ((ii = 0); ii > 10; (ii -= 0))
c[ii] = a[ii];
#pragma omp parallel
// 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 taskloop
for (ii = 0; (ii < 10); (ii -= 0))
c[ii] = a[ii];
#pragma omp parallel
// expected-note@+2 {{defined as firstprivate}}
// expected-error@+2 {{loop iteration variable in the associated loop of 'omp taskloop' directive may not be firstprivate, predetermined as private}}
#pragma omp taskloop firstprivate(ii)
for (ii = 0; ii < 10; ii++)
c[ii] = a[ii];
#pragma omp parallel
// expected-error@+1 {{unexpected OpenMP clause 'linear' in directive '#pragma omp taskloop'}}
#pragma omp taskloop linear(ii)
for (ii = 0; ii < 10; ii++)
c[ii] = a[ii];
#pragma omp parallel
#pragma omp taskloop private(ii)
for (ii = 0; ii < 10; ii++)
c[ii] = a[ii];
#pragma omp parallel
#pragma omp taskloop lastprivate(ii)
for (ii = 0; ii < 10; ii++)
c[ii] = a[ii];
#pragma omp parallel
{
// expected-error@+2 {{loop iteration variable in the associated loop of 'omp taskloop' directive may not be threadprivate or thread local, predetermined as private}}
#pragma omp taskloop
for (sii = 0; sii < 10; sii += 1)
c[sii] = a[sii];
}
#pragma omp parallel
{
#pragma omp taskloop
for (reg0 = 0; reg0 < 10; reg0 += 1)
c[reg0] = a[reg0];
}
#pragma omp parallel
{
#pragma omp taskloop
for (reg = 0; reg < 10; reg += 1)
c[reg] = a[reg];
}
#pragma omp parallel
{
#pragma omp taskloop
for (globalii = 0; globalii < 10; globalii += 1)
c[globalii] = a[globalii];
}
#pragma omp parallel
{
#pragma omp taskloop collapse(2)
for (ii = 0; ii < 10; ii += 1)
for (globalii = 0; globalii < 10; globalii += 1)
c[globalii] += a[globalii] + ii;
}
#pragma omp parallel
// expected-error@+2 {{statement after '#pragma omp taskloop' must be a for loop}}
#pragma omp taskloop
for (auto &item : a) {
item = item + 1;
}
#pragma omp parallel
// 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 taskloop
for (unsigned i = 9; i < 10; i--) {
c[i] = a[i] + b[i];
}
int(*lb)[4] = nullptr;
#pragma omp parallel
#pragma omp taskloop
for (int(*p)[4] = lb; p < lb + 8; ++p) {
}
#pragma omp parallel
// expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp taskloop
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 parallel
#pragma omp taskloop
for (GoodIter I = begin; I < end; ++I)
++I;
#pragma omp parallel
// expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp taskloop
for (GoodIter &I = begin; I < end; ++I)
++I;
#pragma omp parallel
#pragma omp taskloop
for (GoodIter I = begin; I >= end; --I)
++I;
#pragma omp parallel
// expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp taskloop
for (GoodIter I(begin); I < end; ++I)
++I;
#pragma omp parallel
// expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp taskloop
for (GoodIter I(nullptr); I < end; ++I)
++I;
#pragma omp parallel
// expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp taskloop
for (GoodIter I(0); I < end; ++I)
++I;
#pragma omp parallel
// expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp taskloop
for (GoodIter I(1, 2); I < end; ++I)
++I;
#pragma omp parallel
#pragma omp taskloop
for (begin = GoodIter(0); begin < end; ++begin)
++begin;
// expected-error@+4 {{invalid operands to binary expression ('GoodIter' and 'const Iter0')}}
// expected-error@+3 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
#pragma omp parallel
#pragma omp taskloop
for (begin = begin0; begin < end; ++begin)
++begin;
#pragma omp parallel
// expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
#pragma omp taskloop
for (++begin; begin < end; ++begin)
++begin;
#pragma omp parallel
#pragma omp taskloop
for (begin = end; begin < end; ++begin)
++begin;
#pragma omp parallel
// expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}}
#pragma omp taskloop
for (GoodIter I = begin; I - I; ++I)
++I;
#pragma omp parallel
// expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}}
#pragma omp taskloop
for (GoodIter I = begin; begin < end; ++I)
++I;
#pragma omp parallel
// expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}}
#pragma omp taskloop
for (GoodIter I = begin; !I; ++I)
++I;
#pragma omp parallel
// 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 taskloop
for (GoodIter I = begin; I >= end; I = I + 1)
++I;
#pragma omp parallel
#pragma omp taskloop
for (GoodIter I = begin; I >= end; I = I - 1)
++I;
#pragma omp parallel
// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}}
#pragma omp taskloop
for (GoodIter I = begin; I >= end; I = -I)
++I;
#pragma omp parallel
// 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 taskloop
for (GoodIter I = begin; I >= end; I = 2 + I)
++I;
#pragma omp parallel
// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}}
#pragma omp taskloop
for (GoodIter I = begin; I >= end; I = 2 - I)
++I;
// In the following example, we cannot update the loop variable using '+='
// expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}}
#pragma omp parallel
#pragma omp taskloop
for (Iter0 I = begin0; I < end0; ++I)
++I;
#pragma omp parallel
// 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 taskloop
for (Iter0 I; I < end0; ++I)
++I;
Iter1 begin1, end1;
// expected-error@+4 {{invalid operands to binary expression ('Iter1' and 'Iter1')}}
// expected-error@+3 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
#pragma omp parallel
#pragma omp taskloop
for (Iter1 I = begin1; I < end1; ++I)
++I;
#pragma omp parallel
// 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 taskloop
for (Iter1 I = begin1; I >= end1; ++I)
++I;
#pragma omp parallel
// 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 taskloop
for (Iter1 I; I < end1; ++I) {
}
return 0;
}
template <typename IT, int ST>
class TC {
public:
int dotest_lt(IT begin, IT end) {
#pragma omp parallel
// 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 taskloop
for (IT I = begin; I < end; I = I + ST) {
++I;
}
#pragma omp parallel
// 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 taskloop
for (IT I = begin; I <= end; I += ST) {
++I;
}
#pragma omp parallel
#pragma omp taskloop
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) {
#pragma omp parallel
// 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 taskloop
for (IT I = begin; I >= end; I = I + ST) {
++I;
}
#pragma omp parallel
// 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 taskloop
for (IT I = begin; I >= end; I += ST) {
++I;
}
#pragma omp parallel
// 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 taskloop
for (IT I = begin; I >= end; ++I) {
++I;
}
#pragma omp parallel
#pragma omp taskloop
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 parallel
#pragma omp taskloop
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 parallel
#pragma omp taskloop
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 parallel
#pragma omp taskloop
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 parallel
#pragma omp taskloop
for (int i = 0; i < 10; ++i) {
struct S {
void g() { throw 0; }
};
}
}
void test_loop_firstprivate_lastprivate() {
S s(4);
#pragma omp parallel
#pragma omp taskloop lastprivate(s) firstprivate(s)
for (int i = 0; i < 16; ++i)
;
}
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