[Openmp-commits] [PATCH] D106710: [OpenMP][NVPTX] Disable OpenMPOpt when building deviceRTLs

[Shilei Tian via Phabricator via Openmp-commits]

tianshilei1992 created this revision.
Herald added subscribers: guansong, yaxunl, mgorny.
tianshilei1992 requested review of this revision.
Herald added a reviewer: jdoerfert.
Herald added subscribers: openmp-commits, sstefan1.
Herald added a project: OpenMP.

We build `deviceRTLs` with `-O1` by default, which also triggers OpenMPOpt. When
the info cache is created, some attributes are removed. As a result, although we
mark a few functions `noinline`, they are still inlined when the bitcode library
is generated. This can cause an issue in middle end optimization.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D106710

Files:
  openmp/libomptarget/deviceRTLs/nvptx/CMakeLists.txt


Index: openmp/libomptarget/deviceRTLs/nvptx/CMakeLists.txt
===================================================================
--- openmp/libomptarget/deviceRTLs/nvptx/CMakeLists.txt
+++ openmp/libomptarget/deviceRTLs/nvptx/CMakeLists.txt
@@ -159,6 +159,7 @@
              -Xclang -aux-triple -Xclang ${aux_triple}
              -fopenmp -fopenmp-cuda-mode -Xclang -fopenmp-is-device
              -Xclang -target-feature -Xclang +ptx61
+             -mllvm -openmp-opt-disable
              -D__CUDACC__
              -I${devicertl_base_directory}
              -I${devicertl_common_directory}/include


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