[PATCH] D67833: [OpenMP 5.0] Codegen support to pass user-defined mapper functions to runtime

Wed Jul 22 06:58:01 PDT 2020

lildmh added a comment.

In D67833#2166478 <https://reviews.llvm.org/D67833#2166478>, @protze.joachim wrote:

> Starting with the commit of this patch, the libomptarget test `llvm-project/openmp/libomptarget/test/offloading/target_depend_nowait.cpp` fails. Here is a stacktrace of the segfault:
>
>   $ gdb target_depend_nowait.cpp.tmp-x86_64-pc-linux-gnu
>   (gdb) run
>   ...
>   Program received signal SIGSEGV, Segmentation fault.
>   (gdb) bt
>   #0  0x0000000000400fcf in .omp_outlined._debug__ (.global_tid.=0x2aaab96b9be0, .bound_tid.=0x2aaab96b9bd8) at target_depend_nowait.cpp:22
>   #1  0x0000000000401e8d in .omp_outlined..23 (.global_tid.=0x2aaab96b9be0, .bound_tid.=0x2aaab96b9bd8) at target_depend_nowait.cpp:18
>   #2  0x00002aaaab574213 in __kmp_invoke_microtask () from libomp.so
>   #3  0x00002aaaab51338e in __kmp_invoke_task_func () from libomp.so
>   #4  0x00002aaaab5126bf in __kmp_launch_thread () from libomp.so
>   #5  0x00002aaaab55d3d0 in __kmp_launch_worker(void*) () from libomp.so
>   #6  0x00002aaaabbd6e65 in start_thread () from libpthread.so.0
>   #7  0x00002aaaabee988d in clone () from libc.so.6
>

Thanks. If possible, could you send me an IR generated before this patch and one after this patch, so I can probably see the problem?

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https://reviews.llvm.org/D67833