HiPE to be removed in OTP 24?

Rich Neswold rich.neswold@REDACTED
Fri Jun 19 19:31:42 CEST 2020

We are not a “primary customer” but HiPE is essential at Fermilab. We have
an in-house, protocol code generator that aggressively builds binaries
using bitstream comprehensions. We also adjusted our generator to follow
hints given from +bin_opt_info. The last time we measured performance
between byte-code and HiPE, we found the native code ran 100x faster making
Erlang a viable option for our systems.

We’re currently at OTP 21 and have no problem staying there until we feel
the JIT performs similarly and supports ARM. I’m building OTP 23 without
HiPE on a test system to see if the binary manipulation instructions
improved enough that this isn’t an issue.

Just thought I’d let you know that HiPE does have its users.

On Thu, Jun 18, 2020, 3:35 AM Kenneth Lundin <kenneth@REDACTED> wrote:

> HiPE is the runtime and compiler support for native code generation of
> Erlang modules that some of you might have tried, it is part of the OTP
> repository today.
> The OTP team is planning to remove HiPE in the OTP 24 release for the
> following reasons:
>    - we plan to introduce a new way of executing Erlang, the "JIT"
>    described by Lukas Larsson at Code Beam V
>    - since OTP 22, HiPE is not fully functional (does not handle all beam
>    instructions and combinations)
>    - there is no use of HiPE among our primary customers. We actually
>    don't know where HiPE is used except for speeding up Dialyzer which we have
>    another solution for.
>    - The current support for HiPE in the code is a blocker or creates
>    extra work in our new development.
> In order to not remove HiPE in OTP 24, we really soon need maintainers
> committing (long term) to keep HiPE in shape and up to date with the rest
> of OTP.
> /Kenneth Erlang/OTP, Ericsson
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