Horton

Re: JIT compiling with LLVM v9.0

Jason Petersen <jason@citusdata.com>

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From: Jason Petersen <jason@citusdata.com>
To: Andres Freund <andres@anarazel.de>
Cc: David Fetter <david@fetter.org>, Robert Haas <robertmhaas@gmail.com>, Jeff Davis <pgsql@j-davis.com>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2018-01-30T23:25:19Z
Lists: pgsql-hackers 
> On Jan 30, 2018, at 2:08 PM, Andres Freund <andres@anarazel.de> wrote:
> 
> With things like apt recommends and such I don't think this is a huge problem.


I don’t believe there is a similar widely-supported dependency type in yum/rpm, though. rpm 4.12 adds support for Weak Dependencies, which have Recommends/Suggests-style semantics, but AFAIK it’s not going to be on most RPM machines (I haven’t checked most OSes yet, but IIRC it’s mostly a Fedora thing at this point?)

Which means in the rpm packages we’ll have to decide whether this is required or must be opt-in by end users (which as discussed would hurt adoption).

--
Jason Petersen
Software Engineer | Citus Data
303.736.9255
jason@citusdata.com

Commits

  1. Improve JIT docs.

  2. Add documentation for the JIT feature.

  3. Add EXPLAIN support for JIT.

  4. Add inlining support to LLVM JIT provider.

  5. JIT tuple deforming in LLVM JIT provider.

  6. Add FIELDNO_* macro designating offset into structs required for JIT.

  7. Add expression compilation support to LLVM JIT provider.

  8. Expand list of synchronized types and functions in LLVM JIT provider.

  9. Add helpers for emitting LLVM IR.

  10. Basic planner and executor integration for JIT.

  11. Debugging and profiling support for LLVM JIT provider.

  12. Support for optimizing and emitting code in LLVM JIT provider.

  13. Add file containing extensions of the LLVM C API.

  14. Basic JIT provider and error handling infrastructure.

  15. Add configure infrastructure (--with-llvm) to enable LLVM support.

  16. Add C++ support to configure.

  17. Add PGAC_PROG_VARCC_VARFLAGS_OPT autoconf macro.

  18. Fix VM buffer pin management in heap_lock_updated_tuple_rec().

  19. Allow tupleslots to have a fixed tupledesc, use in executor nodes.

  20. Expression evaluation based aggregate transition invocation.

  21. Perform slot validity checks in a separate pass over expression.

  22. Rely on executor utils to build targetlist for DML RETURNING.

  23. Refer to OS X as "macOS", except for the port name which is still "darwin".