[all-commits] [llvm/llvm-project] b19c08: [LIBOMPTARGET]Ignore empty target descriptors.

[Alexey Bataev via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: b19c0810e56b552d31247dcff081643799fd97fb
      https://github.com/llvm/llvm-project/commit/b19c0810e56b552d31247dcff081643799fd97fb
  Author: Alexey Bataev <a.bataev at hotmail.com>
  Date:   2020-01-10 (Fri, 10 Jan 2020)

  Changed paths:
    M openmp/libomptarget/src/rtl.cpp
    A openmp/libomptarget/test/offloading/dynamic_module.c

  Log Message:
  -----------
  [LIBOMPTARGET]Ignore empty target descriptors.

Summary:
If the dynamically loaded module has been compiled with -fopenmp-targets
and has no target regions, it has empty target descriptor. It leads to a
crash at the runtime if another module has at least one target region
and at least one entry in its descriptor. The runtime library is unable
to load the empty binary descriptor and terminates the execution.
Caused by a clang-offload-wrapper.

Reviewers: grokos, jdoerfert

Subscribers: caomhin, kkwli0, openmp-commits

Tags: #openmp

Differential Revision: https://reviews.llvm.org/D72472