Horton

Re: JIT compiling with LLVM v10.0

Andres Freund <andres@anarazel.de>

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From: Andres Freund <andres@anarazel.de>
To: Dmitry Dolgov <9erthalion6@gmail.com>
Cc: Andreas Karlsson <andreas@proxel.se>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2018-02-08T14:24:06Z
Lists: pgsql-hackers 
On 2018-02-08 15:14:42 +0100, Dmitry Dolgov wrote:
> > On 8 February 2018 at 10:29, Andreas Karlsson <andreas@proxel.se> wrote:
> >> On 02/07/2018 03:54 PM, Andres Freund wrote:
> >>
> >> I've pushed v10.0. The big (and pretty painful to make) change is that
> >> now all the LLVM specific code lives in src/backend/jit/llvm, which is
> >> built as a shared library which is loaded on demand.
> >
> >
> > It does not seem to be possible build without LLVM anymore.

Yea, wrong header included. Will fix.


> Maybe I'm doing something wrong, but I also see some issues during compilation
> even with llvm included (with gcc 5.4.0 and 7.1.0). Is it expected, do I need
> to use another version to check it out?
> 
>     $ git rev-parse HEAD
>     e24cac5951575cf86f138080acec663a0a05983e
> 
>     $ ./configure --prefix=/build/postgres-jit/ --with-llvm
> --enable-debug --enable-depend --enable-cassert

Seems you need to provide a decent C++ compiler (via CXX=... to
configure). Will test that it actually works with a recent clang.

Greetings,

Andres Freund

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".