llvm-project

c49837f5 - Revert "[ORC][JITLink] Treat common symbols as weak definitions."

Revert "[ORC][JITLink] Treat common symbols as weak definitions." This reverts commit 785d376d1231167688dd12f93c5c0a5d46cd4086 while I investigate some bot failures (e.g. https://lab.llvm.org/buildbot/#/builders/3/builds/1983).