| Issue |
55449
|
| Summary |
Issue Compiling using Clang14.x with OpenMP Offloading
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
Ramas31
|
Hello all,
Any OpenMP offloading program with schedule(auto) clause does not compile successfully with the latest LLVM-CLANG(14.x) version. However replacing the same with schedule(static) works without any errors. It did not show any such issues with previous versions.
You could try compiling the below code
```
int main()
{
#pragma omp target teams distribute parallel for schedule(auto)
for(int i=0; i<1000; i++)
{}
return 0;
}
```
I compile it using the below command
```
clang -fopenmp -fopenmp-targets=nvptx64 -Xopenmp-target -march=sm_70 -o test test.c
```
Below is the complete error observed
```
ptxas /tmp/test-f7e4d8.s, line 266; error : Module-scoped variables in .local state space are not allowed with ABI
ptxas fatal : Ptx assembly aborted due to errors
clang-14: **error: ptxas command failed with exit code 255 (use -v to see invocation)**
clang version 14.0.1 (https://github.com/llvm/llvm-project.git 0e27d08cdeb338766a477fba071b3df7a06ea6e2)
Target: x86_64-unknown-linux-gnu
Thread model: posix
clang-14: **note:** diagnostic msg: Error generating preprocessed source(s).
```
Additionally, using O2/O3 optimization level during compilation works for this sample code but not always. Some programs still give the ptxas error during compilation even after using O2/O3.
Issue was discussed on LLVM- discourse
https://discourse.llvm.org/t/issue-compiling-using-clang14-x-with-openmp-offloading/62445
Please solve this issue and let us know
Thank You
Rama
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