This is causing a huge pile of buildbot failures.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@276857 91177308-0d34-0410-b5e6-96231b3b80d8

Currently the Registry class contains the vestiges of a previous attempt to
allow plugins to be used on Windows without using BUILD_SHARED_LIBS, where a
plugin would have its own copy of a registry and export it to be imported by
the tool that's loading the plugin. This only works if the plugin is entirely
self-contained with the only interface between the plugin and tool being the
registry, and in particular this conflicts with how IR pass plugins work.

This patch changes things so that instead the add_node function of the registry
is exported by the tool and then imported by the plugin, which solves this
problem and also means that instead of every plugin having to export every
registry they use instead LLVM only has to export the add_node functions. This
allows plugins that use a registry to work on Windows if
LLVM_EXPORT_SYMBOLS_FOR_PLUGINS is used.

Differential Revision: http://reviews.llvm.org/D21385


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@276856 91177308-0d34-0410-b5e6-96231b3b80d8

Modifications made by clang-tidy with minor tweaks.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@215557 91177308-0d34-0410-b5e6-96231b3b80d8

  - Plugins don't need to export _ZN4llvm8Registry*.
  - Win32.DLL cannot merge common symbols among DLLs. Static members in llvm::Registry should be instantiated in a parent.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212821 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106113 91177308-0d34-0410-b5e6-96231b3b80d8

 - Expects the plugin has been loaded with -load.

 - Using this may require disabling TOOL_NO_EXPORTS in the clang-cc Makefile, this breaks the llvm::Registry way of working (static constructors are bad, kids). This should be replaced with a "real" plugin model that has explicit plugin interfaces.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@88824 91177308-0d34-0410-b5e6-96231b3b80d8