[Openmp-commits] [PATCH] D133277: [RFC][OpenMP][Doc] No more backward compatible

Shilei Tian via Phabricator via Openmp-commits openmp-commits at lists.llvm.org
Sun Sep 4 12:14:39 PDT 2022

tianshilei1992 created this revision.
tianshilei1992 added reviewers: jdoerfert, JonChesterfield, jhuber6, RaviNarayanaswamy.
Herald added subscribers: guansong, yaxunl.
Herald added a project: All.
tianshilei1992 requested review of this revision.
Herald added subscribers: openmp-commits, sstefan1.
Herald added a project: OpenMP.

Now we state that backward compatibility is not guaranteed anymore in
the document.

  rG LLVM Github Monorepo



Index: openmp/docs/SupportAndFAQ.rst
--- openmp/docs/SupportAndFAQ.rst
+++ openmp/docs/SupportAndFAQ.rst
@@ -329,3 +329,12 @@
 stack memory during execution and crash. The environment variable
 ``LIBOMPTARGET_STACK_SIZE`` can be used to increase the stack size if this
+Q: Are libomptarget and plugins backward compatible?
+No. Since libomptarget and plugins are now built as LLVM libraries starting from
+LLVM 15, they are no longer backward compatible. Given that fact, both libomptarget
+and plugin interfaces are not guaranteed to be compatible as well. It is always
+recommended to use the Clang compiler and runtime libraries from the same build.
+If not, it is up to users to make sure the compatibility.

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