Re: [pcre-dev] [Bug 2635] New: Port PCRE2 JIT to Linux on IB…

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Autor: Ze'ev Atlas
Data:  
A: pcre-dev@exim.org, Philip Hazel
Assumpte: Re: [pcre-dev] [Bug 2635] New: Port PCRE2 JIT to Linux on IBMz (s390x)
It is not clear who has initiated this wish.Few years back, when I ported the interpreted version of PCRE to classic z/OS, Zoltan wanted to develop JIT version for the IBM mainframe.  At the time, both Phil and I had discouraged it due to the proprietary nature of that platform.  If anybody wants to do it, then please be aware that tis is a very complex CISC system and IBM continues to develop it and at time keeps things unpublished.As akways, I will be mire than glad to share my experience with that platform

Ze'ev Atlas



    On Friday, August 21, 2020, 02:54:32 PM EDT, admin@??? <admin@???> wrote:  


https://bugs.exim.org/show_bug.cgi?id=2635

            Bug ID: 2635
          Summary: Port PCRE2 JIT to Linux on IBMz (s390x)
          Product: PCRE
          Version: N/A
          Hardware: Other
                OS: Linux
            Status: NEW
          Severity: wishlist
          Priority: medium
        Component: Code
          Assignee: ph10@???
          Reporter: dje.gcc@???
                CC: pcre-dev@???

Enable PCRE2 JIT on Linux on IBMz (s390x-linux) and optimize to achieve
equivalent speedup over non-JIT code as x86_64.  Goal is full functionality and
passing testsuite with JIT enabled.

An unfinished port of PCRE2 JIT to s390x exists in the Linux-on-IBM-z Github
account and can be used as a starting point.  IBM will contribute the code as
necessary.

https://github.com/linux-on-ibm-z/pcre2/tree/s390x-experimental

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