Horton

Re: JIT compiling with LLVM v12.2

Andres Freund <andres@anarazel.de>

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From: Andres Freund <andres@anarazel.de>
To: pgsql-hackers@postgresql.org
Date: 2018-03-20T10:14:55Z
Lists: pgsql-hackers 
Hi,

I've pushed a revised and rebased version of my JIT patchset.
The git tree is at
  https://git.postgresql.org/git/users/andresfreund/postgres.git
in the jit branch
  https://git.postgresql.org/gitweb/?p=users/andresfreund/postgres.git;a=shortlog;h=refs/heads/jit

There's a lot of tiny changes in here:
- doc proofreading, addition of --with-llvm docs
- comments
- pgindent (jit files, not whole tree)
- syncing of order between compiled and interpreted expressions in case
  statement
- line-by-line review of expression compliation
- fix of a small memory leak (missing pfree of the JIT context struct
  itself)
- slight simplification of JIT resowner integration (no need to
  re-associate with parent)

My current plan is to push the first few commits relatively soon, give
the BF a few cycles to shake out. Set up a few BF animals with each
supported LLVM version. Then continue mergin.

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".