| Issue |
147336
|
| Summary |
Clang: Clang error for metadirective with multiple when clauses and no otherwise
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
Ritanya-B-Bharadwaj
|
This commit - https://github.com/llvm/llvm-project/pull/127113 fixes the "expected _expression_" error caused by a missing implicit otherwise clause in metadirective.
However, the issue still persists when multiple when clauses are present without an explicit default.
For example:
```
#include <stdio.h>
#include <omp.h>
#if defined(OPENMP_THREAD)
#define OMP_MODEL_THREADS 1
#define OMP_MODEL_TARGET 0
#elif defined(OPENMP_TARGET)
#define OMP_MODEL_THREADS 0
#define OMP_MODEL_TARGET 1
#else
#define OMP_MODEL_THREADS 0
#define OMP_MODEL_TARGET 0
#endif
double a,x[1000],y[1000],z[1000];
int good_with_default()
{
int i;
// Routine with "otherwise" clause compiles clean.
#pragma omp metadirective \
when(user={condition(OMP_MODEL_THREADS)}:parallel for simd) \
when(user={condition(OMP_MODEL_TARGET)}: target teams distribute parallel for simd) \
otherwise(simd)
for (i=0;i<1000;i++)
{
z[i]=a*x[i]+y[i];
}
return 0;
}
int error_without_default()
{
int i;
// error: expected _expression_
#pragma omp metadirective \
when(user={condition(OMP_MODEL_THREADS)}:parallel for simd) \
when(user={condition(OMP_MODEL_TARGET)}: target teams distribute parallel for simd)
for (i=0;i<1000;i++)
{
z[i]=a*x[i]+y[i];
}
return 0;
}
```
Output
```
<source>:40:89: error: expected _expression_
40 | when(user={condition(OMP_MODEL_TARGET)}: target teams distribute parallel for simd)
| ^
1 error generated.
Compiler returned: 1
```
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