| The tests in this directory check that basic KernelInfoPrinter functionality |
| behaves reasonably for LLVM IR produced by Clang OpenMP codegen. |
| |
| So that these tests are straightforward to maintain and faithfully represent |
| Clang OpenMP codegen, do not tweak or reduce the LLVM IR in them. Other tests |
| more exhaustively check KernelInfoPrinter features using reduced LLVM IR. |
| |
| The LLVM IR in each test file `$TEST` can be regenerated as follows in the case |
| that Clang OpenMP codegen changes or it becomes desirable to adjust the source |
| OpenMP program below. First, remove the existing LLVM IR from `$TEST`. Then, |
| where `$TARGET` (e.g., `nvptx64-nvidia-cuda-sm_70` or `amdgcn-amd-amdhsa-gfx906`) |
| depends on `$TEST`: |
| |
| ``` |
| $ cd /tmp |
| $ cat test.c |
| #pragma omp declare target |
| void f(); |
| void g() { |
| int i; |
| int a[2]; |
| f(); |
| g(); |
| } |
| #pragma omp end declare target |
| |
| void h(int i) { |
| #pragma omp target map(tofrom:i) |
| { |
| int i; |
| int a[2]; |
| f(); |
| g(); |
| } |
| } |
| |
| $ clang -g -fopenmp --offload-arch=native -save-temps -c test.c |
| $ llvm-dis test-openmp-$TARGET.bc |
| $ cat test-openmp-$TARGET.ll >> $TEST |
| ``` |
