caio/clang-p2996
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clang-p2996/clang/test/SemaOpenACC/loop-construct-gang-clause.cpp
erichkeane e3446b9a07 [OpenACC] Fix bug with worker/vector/gang clause inside another 
The original implementation rejected some valid constructs.  The rule is
supposed to be:

Gang-on-Kernel cannot have a gang in its region

Worker cannot have a worker or gang in its region

Vector cannot have worker, gang, or vector in its region.

The previous implementation improperly implemented that vector wasnt'
allowed in the other two.  This patch fixes it and adds testing for it.
2024-12-04 10:34:50 -08:00

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// RUN: %clang_cc1 %s -fopenacc -verify
struct S{};
struct Converts{
operator int();
};
template<typename T, unsigned Zero, unsigned Two, unsigned Four>
void ParallelOrOrphanTempl() {
T i;
// expected-error@+1{{'num' argument on 'gang' clause is not permitted on an orphaned 'loop' construct}}
#pragma acc loop gang(i)
for(int i = 0; i < 5; ++i);
// expected-error@+1{{'num' argument on 'gang' clause is not permitted on an orphaned 'loop' construct}}
#pragma acc loop gang(num:i)
for(int i = 0; i < 5; ++i);
// expected-error@+2{{'num' argument on 'gang' clause is not permitted on a 'loop' construct associated with a 'parallel' compute construct}}
#pragma acc parallel
#pragma acc loop gang(i)
for(int i = 0; i < 5; ++i);
// expected-error@+2{{'num' argument on 'gang' clause is not permitted on a 'loop' construct associated with a 'parallel' compute construct}}
#pragma acc parallel
#pragma acc loop gang(num:i)
for(int i = 0; i < 5; ++i);
// expected-error@+1{{argument to 'gang' clause dimension must be a constant expression}}
#pragma acc loop gang(dim:i)
for(int i = 0; i < 5; ++i);
// expected-error@+2{{argument to 'gang' clause dimension must be a constant expression}}
#pragma acc parallel
#pragma acc loop gang(dim:i)
for(int i = 0; i < 5; ++i);
// expected-error@+1{{argument to 'gang' clause dimension must be 1, 2, or 3: evaluated to 0}}
#pragma acc loop gang(dim:Zero)
for(int i = 0; i < 5; ++i);
// expected-error@+2{{argument to 'gang' clause dimension must be 1, 2, or 3: evaluated to 0}}
#pragma acc parallel
#pragma acc loop gang(dim:Zero)
for(int i = 0; i < 5; ++i);
// expected-error@+1{{argument to 'gang' clause dimension must be 1, 2, or 3: evaluated to 4}}
#pragma acc loop gang(dim:Four)
for(int i = 0; i < 5; ++i);
// expected-error@+2{{argument to 'gang' clause dimension must be 1, 2, or 3: evaluated to 4}}
#pragma acc parallel
#pragma acc loop gang(dim:Four)
for(int i = 0; i < 5; ++i);
#pragma acc loop gang(static:i) gang(dim:Two)
for(int i = 0; i < 5; ++i);
#pragma acc parallel
#pragma acc loop gang(dim:Two) gang(static:*)
for(int i = 0; i < 5; ++i);
#pragma acc parallel
#pragma acc loop gang(dim:Two, static:i)
for(int i = 0; i < 5; ++i);
// expected-error@+4{{OpenACC 'gang' clause may have at most one 'static' argument}}
// expected-note@+3{{previous expression is here}}
// expected-error@+2{{OpenACC 'gang' clause may have at most one 'dim' argument}}
// expected-note@+1{{previous expression is here}}
#pragma acc loop gang(static:i, static:i, dim:Two, dim:1)
for(int i = 0; i < 5; ++i);
}
void ParallelOrOrphan() {
ParallelOrOrphanTempl<int, 0, 2, 4>(); // expected-note{{in instantiation of function template}}
int i;
// expected-error@+1{{'num' argument on 'gang' clause is not permitted on an orphaned 'loop' construct}}
#pragma acc loop gang(i)
for(int i = 0; i < 5; ++i);
// expected-error@+1{{'num' argument on 'gang' clause is not permitted on an orphaned 'loop' construct}}
#pragma acc loop gang(num:i)
for(int i = 0; i < 5; ++i);
// expected-error@+2{{'num' argument on 'gang' clause is not permitted on a 'loop' construct associated with a 'parallel' compute construct}}
#pragma acc parallel
#pragma acc loop gang(i)
for(int i = 0; i < 5; ++i);
// expected-error@+2{{'num' argument on 'gang' clause is not permitted on a 'loop' construct associated with a 'parallel' compute construct}}
#pragma acc parallel
#pragma acc loop gang(num:i)
for(int i = 0; i < 5; ++i);
// expected-error@+1{{argument to 'gang' clause dimension must be a constant expression}}
#pragma acc loop gang(dim:i)
for(int i = 0; i < 5; ++i);
// expected-error@+2{{argument to 'gang' clause dimension must be a constant expression}}
#pragma acc parallel
#pragma acc loop gang(dim:i)
for(int i = 0; i < 5; ++i);
// expected-error@+1{{argument to 'gang' clause dimension must be 1, 2, or 3: evaluated to 0}}
#pragma acc loop gang(dim:0)
for(int i = 0; i < 5; ++i);
// expected-error@+2{{argument to 'gang' clause dimension must be 1, 2, or 3: evaluated to 0}}
#pragma acc parallel
#pragma acc loop gang(dim:0)
for(int i = 0; i < 5; ++i);
// expected-error@+1{{argument to 'gang' clause dimension must be 1, 2, or 3: evaluated to 4}}
#pragma acc loop gang(dim:4)
for(int i = 0; i < 5; ++i);
// expected-error@+2{{argument to 'gang' clause dimension must be 1, 2, or 3: evaluated to 4}}
#pragma acc parallel
#pragma acc loop gang(dim:4)
for(int i = 0; i < 5; ++i);
#pragma acc loop gang(static:i) gang(dim:2)
for(int i = 0; i < 5; ++i);
#pragma acc parallel
#pragma acc loop gang(dim:2) gang(static:i)
for(int i = 0; i < 5; ++i);
S s;
// expected-error@+2{{OpenACC clause 'gang' requires expression of integer type ('S' invalid)}}
#pragma acc parallel
#pragma acc loop gang(dim:2) gang(static:s)
for(int i = 0; i < 5; ++i);
Converts C;
#pragma acc parallel
#pragma acc loop gang(dim:2) gang(static:C)
for(int i = 0; i < 5; ++i);
}
template<typename SomeS, typename SomeC, typename Int>
void StaticIsIntegralTempl() {
SomeS s;
// expected-error@+2{{OpenACC clause 'gang' requires expression of integer type ('S' invalid)}}
#pragma acc parallel
#pragma acc loop gang(dim:2) gang(static:s)
for(int i = 0; i < 5; ++i);
SomeC C;
#pragma acc parallel
#pragma acc loop gang(dim:2) gang(static:C)
for(int i = 0; i < 5; ++i);
Int i;
#pragma acc parallel
#pragma acc loop gang(dim:2) gang(static:i)
for(int i = 0; i < 5; ++i);
#pragma acc parallel
#pragma acc loop gang(dim:2) gang(static:*)
for(int i = 0; i < 5; ++i);
}
void StaticIsIntegral() {
StaticIsIntegralTempl<S, Converts, int>();// expected-note{{in instantiation of function template}}
S s;
// expected-error@+2{{OpenACC clause 'gang' requires expression of integer type ('S' invalid)}}
#pragma acc parallel
#pragma acc loop gang(dim:2) gang(static:s)
for(int i = 0; i < 5; ++i);
Converts C;
#pragma acc parallel
#pragma acc loop gang(dim:2) gang(static:C)
for(int i = 0; i < 5; ++i);
}
template<unsigned I>
void SerialTempl() {
// expected-error@+2{{'num' argument on 'gang' clause is not permitted on a 'loop' construct associated with a 'serial' compute construct}}
#pragma acc serial
#pragma acc loop gang(I)
for(int i = 0; i < 5; ++i);
// expected-error@+2{{'num' argument on 'gang' clause is not permitted on a 'loop' construct associated with a 'serial' compute construct}}
#pragma acc serial
#pragma acc loop gang(num:I)
for(int i = 0; i < 5; ++i);
// expected-error@+2{{'dim' argument on 'gang' clause is not permitted on a 'loop' construct associated with a 'serial' compute construct}}
#pragma acc serial
#pragma acc loop gang(dim:I)
for(int i = 0; i < 5; ++i);
#pragma acc serial
#pragma acc loop gang(static:I)
for(int i = 0; i < 5; ++i);
}
void Serial() {
SerialTempl<2>();
// expected-error@+2{{'num' argument on 'gang' clause is not permitted on a 'loop' construct associated with a 'serial' compute construct}}
#pragma acc serial
#pragma acc loop gang(1)
for(int i = 0; i < 5; ++i);
// expected-error@+2{{'num' argument on 'gang' clause is not permitted on a 'loop' construct associated with a 'serial' compute construct}}
#pragma acc serial
#pragma acc loop gang(num:1)
for(int i = 0; i < 5; ++i);
// expected-error@+2{{'dim' argument on 'gang' clause is not permitted on a 'loop' construct associated with a 'serial' compute construct}}
#pragma acc serial
#pragma acc loop gang(dim:1)
for(int i = 0; i < 5; ++i);
#pragma acc serial
#pragma acc loop gang(static:1)
for(int i = 0; i < 5; ++i);
int i;
#pragma acc serial
#pragma acc loop gang(static:i)
for(int i = 0; i < 5; ++i);
}
template<typename T>
void KernelsTempl() {
T t;
// expected-error@+2{{'dim' argument on 'gang' clause is not permitted on a 'loop' construct associated with a 'kernels' compute construct}}
#pragma acc kernels
#pragma acc loop gang(dim:t)
for(int i = 0; i < 5; ++i);
#pragma acc kernels
#pragma acc loop gang(static:t)
for(int i = 0; i < 5; ++i);
// expected-error@+3{{'num' argument to 'gang' clause not allowed on a 'loop' construct associated with a 'kernels' construct that has a 'num_gangs' clause}}
// expected-note@+1{{previous clause is here}}
#pragma acc kernels num_gangs(t)
#pragma acc loop gang(t)
for(int i = 0; i < 5; ++i);
// expected-error@+3{{'num' argument to 'gang' clause not allowed on a 'loop' construct associated with a 'kernels' construct that has a 'num_gangs' clause}}
// expected-note@+1{{previous clause is here}}
#pragma acc kernels num_gangs(t)
#pragma acc loop gang(num:t)
for(int i = 0; i < 5; ++i);
}
void Kernels() {
KernelsTempl<unsigned>();
// expected-error@+2{{'dim' argument on 'gang' clause is not permitted on a 'loop' construct associated with a 'kernels' compute construct}}
#pragma acc kernels
#pragma acc loop gang(dim:1)
for(int i = 0; i < 5; ++i);
unsigned t;
#pragma acc kernels
#pragma acc loop gang(static:t)
for(int i = 0; i < 5; ++i);
// expected-error@+3{{'num' argument to 'gang' clause not allowed on a 'loop' construct associated with a 'kernels' construct that has a 'num_gangs' clause}}
// expected-note@+1{{previous clause is here}}
#pragma acc kernels num_gangs(1)
#pragma acc loop gang(1)
for(int i = 0; i < 5; ++i);
// expected-error@+3{{'num' argument to 'gang' clause not allowed on a 'loop' construct associated with a 'kernels' construct that has a 'num_gangs' clause}}
// expected-note@+1{{previous clause is here}}
#pragma acc kernels num_gangs(1)
#pragma acc loop gang(num:1)
for(int i = 0; i < 5; ++i);
#pragma acc kernels
#pragma acc loop gang(num:1)
for(int j = 0; j < 5; ++j) {
// expected-error@+2{{loop with a 'gang' clause may not exist in the region of a 'gang' clause on a 'kernels' compute construct}}
// expected-note@-3{{previous clause is here}}
#pragma acc loop gang(static:1)
for(int i = 0; i < 5; ++i);
}
#pragma acc kernels
#pragma acc loop gang(num:1)
for(int j = 0; j < 5; ++j) {
#pragma acc loop worker(1) vector(1)
for(int i = 0; i < 5; ++i);
}
#pragma acc kernels
#pragma acc loop gang(num:1)
for(int j = 0; j < 5; ++j) {
// allowed, intervening compute construct
#pragma acc serial
#pragma acc loop gang(static:1)
for(int i = 0; i < 5; ++i);
}
#pragma acc kernels
#pragma acc loop gang(num:1)
for(int i = 0; i < 5; ++i);
// OK, on a different 'loop', not in the assoc statement.
#pragma acc loop gang(static:1)
for(int i = 0; i < 5; ++i);
// expected-error@+3{{OpenACC 'gang' clause may have at most one unnamed or 'num' argument}}
// expected-note@+2{{previous expression is here}}
#pragma acc kernels
#pragma acc loop gang(5, num:1)
for(int i = 0; i < 5; ++i);
// expected-error@+3{{OpenACC 'gang' clause may have at most one unnamed or 'num' argument}}
// expected-note@+2{{previous expression is here}}
#pragma acc kernels
#pragma acc loop gang(num:5, 1)
for(int i = 0; i < 5; ++i);
// expected-error@+3{{OpenACC 'gang' clause may have at most one unnamed or 'num' argument}}
// expected-note@+2{{previous expression is here}}
#pragma acc kernels
#pragma acc loop gang(num:5, num:1)
for(int i = 0; i < 5; ++i);
}
void MaxOneEntry() {
// expected-error@+3{{OpenACC 'gang' clause may have at most one 'static' argument}}
// expected-note@+2{{previous expression is here}}
#pragma acc kernels
#pragma acc loop gang(static: 1, static:1)
for(int i = 0; i < 5; ++i);
#pragma acc kernels
#pragma acc loop gang gang(static:1)
for(int i = 0; i < 5; ++i);
}
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