b0cfbfd74b
OpenACC restricts the contents of a 'for' loop affected by a 'loop' construct without a 'seq'. The loop variable must be integer, pointer, or random-access-iterator, it must monotonically increase/decrease, and the trip count must be computable at runtime before the function. This patch tries to implement some of these limitations to the best of our ability, though it causes us to be perhaps overly restrictive at the moment. I expect we'll revisit some of these rules/add additional supported forms of loop-variable and 'monotonically increasing' here, but the currently enforced rules are heavily inspired by the OMP implementation here.
66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
// RUN: %clang_cc1 %s -fopenacc -verify
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struct S {
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int IntMem;
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int *PtrMem;
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};
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void uses() {
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int LocalInt;
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int *LocalPtr;
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int Array[5];
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int *PtrArray[5];
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struct S s;
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// expected-error@+1{{expected pointer in 'attach' clause, type is 'int'}}
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#pragma acc parallel attach(LocalInt)
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while (1);
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// expected-error@+1{{OpenACC variable is not a valid variable name, sub-array, array element, member of a composite variable, or composite variable member}}
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#pragma acc parallel attach(&LocalInt)
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while (1);
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#pragma acc serial attach(LocalPtr)
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while (1);
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// expected-error@+1{{expected pointer in 'attach' clause, type is 'int[5]'}}
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#pragma acc kernels attach(Array)
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while (1);
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// expected-error@+1{{expected pointer in 'attach' clause, type is 'int'}}
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#pragma acc parallel attach(Array[0])
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while (1);
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// expected-error@+2{{OpenACC sub-array is not allowed here}}
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// expected-note@+1{{expected variable of pointer type}}
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#pragma acc parallel attach(Array[0:1])
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while (1);
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// expected-error@+1{{expected pointer in 'attach' clause, type is 'int *[5]'}}
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#pragma acc parallel attach(PtrArray)
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while (1);
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#pragma acc parallel attach(PtrArray[0])
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while (1);
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// expected-error@+2{{OpenACC sub-array is not allowed here}}
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// expected-note@+1{{expected variable of pointer type}}
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#pragma acc parallel attach(PtrArray[0:1])
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while (1);
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// expected-error@+1{{expected pointer in 'attach' clause, type is 'struct S'}}
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#pragma acc parallel attach(s)
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while (1);
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// expected-error@+1{{expected pointer in 'attach' clause, type is 'int'}}
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#pragma acc parallel attach(s.IntMem)
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while (1);
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#pragma acc parallel attach(s.PtrMem)
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while (1);
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// expected-error@+1{{OpenACC 'attach' clause is not valid on 'loop' directive}}
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#pragma acc loop attach(LocalInt)
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for(int i = 5; i < 10;++i);
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}
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