[llvm-dev] OrcV1 removal

Lang Hames via llvm-dev llvm-dev at lists.llvm.org
Sun Sep 6 23:16:00 PDT 2020

Hi All,

The time has finally come to remove OrcV1. I expect to remove it some time
after the 14th of September. This will remove all the legacy layers, legacy
utilities, the old Orc C bindings, and OrcMCJITReplacement. ExecutionEngine
and MCJIT will *not* be affected by this.

I had hoped to have removable code enabled before deleting OrcV1, but it
turns out that implementing removable code in OrcV2 without simultaneously
breaking it in OrcV1 is difficult. Instead my plan is to delete OrcV1 and
implement removable code in OrcV2 as quickly as possible. I think this is
the fastest path to where we want to be.

If you're on llvm master, still using the legacy layers, and you *don't*
need removable code support, then I would encourage you to switch over as
soon as you're able. If you *do* need removable code support then you may
have to wait a few weeks for it to land.

If you have any questions about the removal please let me know!

Kind Regards,
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