[llvm-dev] Stability of ORC JIT api with v8

Lang Hames via llvm-dev llvm-dev at lists.llvm.org
Sun Apr 7 14:13:46 PDT 2019

Hi Dibyendu,

Thank you. Is it safe to use the v8 JIT api or would you suggest waiting
> unto v9?

It depends on your tolerance for churn in the API. If you are looking for
something low maintenance and do not need the new features yet you can hold
off until LLVM 9. If you don't mind having to update your code to account
for new changes (and I expect the changes to usually be fairly
straightforward) I think you can jump to the new APIs now.


On Mon, Apr 1, 2019 at 12:05 PM Dibyendu Majumdar <mobile at majumdar.org.uk>

> On Fri, 29 Mar 2019 at 21:30, Lang Hames <lhames at gmail.com> wrote:
> >
> > I expect the rate of change of the ORCv2 APIs to be lower now, but they
> are still under active development. The core infrastructure is all in
> place: ExecutionSession, JITDylibs,
> MaterializationUnit/MaterializationResponsibility, and Layers. In LLVM 9 I
> expect the symbol resolution process to receive some further tweaks, and I
> want to add support for removing code from the JIT (which ORCv2 does not
> support yet). The big work in LLVM 9 at the moment is the new JIT linker (
> https://reviews.llvm.org/D58704), but this will be an implementation
> detail to most clients.
> Thank you. Is it safe to use the v8 JIT api or would you suggest
> waiting unto v9?
> > On Sat, Mar 23, 2019 at 5:16 AM Dibyendu Majumdar via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
> >>
> >> I am still on LLVM v6 as v7 ORC api changes were not backward
> >> compatible. Has the ORC api stabilized now with v8, or is it still
> >> under flux?
> >>
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