Horton

Re: JIT compiling with LLVM v12

Jesper Pedersen <jesper.pedersen@redhat.com>

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From: Jesper Pedersen <jesper.pedersen@redhat.com>
To: Pierre Ducroquet <p.psql@pinaraf.info>
Cc: pgsql-hackers@postgresql.org, Andres Freund <andres@anarazel.de>
Date: 2018-03-29T15:55:00Z
Lists: pgsql-hackers

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Hi,

On 03/29/2018 11:03 AM, Pierre Ducroquet wrote:
> Clang is needed to emit the LLVM bitcode required for inlining. The "-emit-
> llvm" flag is used for that. A dual compilation is required for inlining to
> work, one compilation with gcc/clang/msvc/… to build the postgresql binary,
> one with clang to generate the .bc files for inlining.
> It can be surprising, but there is little way around that (or we accept only
> clang to build postgresql, but there would be a riot).
> 

Thanks Pierre.

Best regards,
  Jesper

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".