Horton

Re: JIT compiling with LLVM v9.0

Andres Freund <andres@anarazel.de>

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From: Andres Freund <andres@anarazel.de>
To: Pierre Ducroquet <p.psql@pinaraf.info>
Cc: pgsql-hackers@lists.postgresql.org
Date: 2018-01-24T22:42:12Z
Lists: pgsql-hackers 
Hi,

On 2018-01-24 14:06:30 -0800, Andres Freund wrote:
> > In LLVM 5.0, it looks like DebugInfo.h is not available in llvm-c, only as a C
> > ++ API in llvm/IR/DebugInfo.h.
> 
> Hm, I compiled against 5.0 quite recently, but added the stripping of
> debuginfo lateron.  I'll add a fallback method, thanks for pointing that
> out!

Went more with your fix, there's not much point in using the C API
here. Should probably remove the use of it nearly entirely from the .cpp
file (save for wrap/unwrap() use). But man, the 'class Error' usage is
one major ugly pain.


> > But I still could not build because the LLVM API changed between 5.0 and 6.0 
> > regarding value info SummaryList. 
> 
> Hm, thought these changes were from before my 5.0 test. But the code
> evolved heavily, so I might misremember. Let me see.

Ah, that one was actually easier to fix. There's no need to get the base
object at all, so it's just a one-line change.


> Thanks, I'll try to push fixes into the tree soon-ish..

Pushed.

Thanks again for looking!

- Andres

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".