[llvm-dev] ORC JIT Weekly #37 -- JITLink RISCV, Swift/Obj-C support, ExecutionSession requires ExecutorProcessControl

[Lang Hames via llvm-dev]

Hi All,

No updates this week,

-- Lang.

On Mon, Jul 26, 2021 at 7:38 PM Lang Hames <lhames at gmail.com> wrote:

> Hi All,
>
> MachOPlatform TLV support (introduced last week, see [1]) has gone through
> a few rounds of reversion and re-application while I worked out the kinks,
> however it looks like it has stabilized in time for the LLVM 13 branch. We
> still need some work to support non-trivial destructors for thread locals
> (this will not happen until LLVM 14 or later), but thread-local PODs should
> now work.
>
> This week's highlights:
>
> 1. The new JITLink ELF/RISCV backend has landed in [2]. Thanks very much
> to Stephen Fan for that!
>
> 2. MachOPlatform support for simple Swift and Objective-C programs has
> landed in [3]. JIT stacks that set up a MachOPlatform instance will now be
> able to load and run simple Swift and Objective-C programs.
>
> 3. ExecutionSession will soon be required to supply an associated
> ExecutorProcessControl instance (see [4]). This is another step towards
> making the APIs uniform regardless of whether JIT'd code is running
> in-process or out-of-process.
>
> During an initial transition period we will allow use of a placeholder EPC
> value (the UnsupportedExecutorProcessControl can be used for this), but new
> utilities are allowed to assume a valid EPC attached to the
> ExecutionSession, and may fail if one is not present.
>
> If you're JITing in process you should just be able to use a
> SelfExecutorProcessControl instance. Please file bugs if you need
> extensions to that class's API for your use case.
>
> -- Lang.
>
> [1] https://lists.llvm.org/pipermail/llvm-dev/2021-July/151841.html
> [2]
> https://github.com/llvm/llvm-project/commit/0ad562b48bfd7a487eb38ceaa309cdd9a1ad87e7
> <https://github.com/llvm/llvm-project/commit/0ad562b48bfd7a487eb38ceaa309cdd9a1ad87e7#diff-27be16698a63aa91d1157a22623bc0b5438d43c10c7e89ebcbe0fa49307b796b>
> [3]
> https://github.com/llvm/llvm-project/commit/cdcc35476833eca4f4996256e3ca0b21ecc26ad8
> [4] https://reviews.llvm.org/D104694
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20210802/8ea0e918/attachment.html>