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d9afd01962
Summary: Add a new plugin API. This closes the gap between pass registration and out-of-tree passes for the new PassManager. Unlike with the existing API, interaction with a plugin is always initiated from the tools perspective. I.e., when a plugin is loaded, it resolves and calls a well-known symbol `llvmGetPassPluginInfo` to obtain details about the plugin. The fundamental motivation is to get rid of as many global constructors as possible. The API exposed by the plugin info is kept intentionally minimal. Reviewers: chandlerc Reviewed By: chandlerc Subscribers: bollu, grosser, lksbhm, mgorny, llvm-commits Differential Revision: https://reviews.llvm.org/D35258 llvm-svn: 329273