[Openmp-commits] [PATCH] D98838: [OpenMP] Fixed a crash in hidden helper thread

[Ron Lieberman via Phabricator via Openmp-commits]

ronlieb added a comment.

The AMD AOCC Compiler team reported to me this morning that they are able to reproduce the SPEC CPU performance regressions when the patch is present.

They are able to recover the lost performance when they set the two environment variables using SPEC confg file rules

  preENV_LIBOMP_USE_HIDDEN_HELPER_TASK=OFF
  preENV_LIBOMP_NUM_HIDDEN_HELPER_THREADS=0

which for a non speccpu program would be simply

  export  LIBOMP_USE_HIDDEN_HELPER_TASK=OFF
  export  LIBOMP_NUM_HIDDEN_HELPER_THREADS=0
   
  
  
   


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D98838/new/

https://reviews.llvm.org/D98838