Horton

Re: JIT compiling with LLVM v12.2

Andres Freund <andres@anarazel.de>

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From: Andres Freund <andres@anarazel.de>
To: Thomas Munro <thomas.munro@enterprisedb.com>
Cc: Stephen Frost <sfrost@snowman.net>, Pg Hackers <pgsql-hackers@postgresql.org>
Date: 2018-03-21T20:09:58Z
Lists: pgsql-hackers 
Hi,

On 2018-03-22 09:00:19 +1300, Thomas Munro wrote:
> On Thu, Mar 22, 2018 at 8:47 AM, Andres Freund <andres@anarazel.de> wrote:
> > On 2018-03-21 20:06:49 +1300, Thomas Munro wrote:
> >> On Wed, Mar 21, 2018 at 4:07 PM, Andres Freund <andres@anarazel.de> wrote:
> >> > Indeed. I've pushed a rebased version now, that basically just fixes the
> >> > issue Thomas observed.
> >>
> >> I set up a 32 bit i386 virtual machine and installed Debian 9.4.
> >> Compiler warnings:
> >
> > Was that with a 64bit CPU and 32bit OS, or actually a 32bit CPU?
> 
> 64 bit CPU, 32 bit OS.  I didn't try Debian multi-arch i386 support on
> an amd64 system, but that's probably an easier way to do this if you
> already have one of those...

Ah, then I think I might know what happend. Does it start to work if you
replace the auto-detected cpu with "x86"? I think what might happen is
that it generates 64bit code, because of the detected CPU name.

Let me set up a chroot, in this case I should be able to emulate this
pretty easily...

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".