Horton

Re: LLVM 22

Thomas Munro <thomas.munro@gmail.com>

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From: Thomas Munro <thomas.munro@gmail.com>
To: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2026-01-04T05:02:00Z
Lists: pgsql-hackers 
On Sat, Jan 3, 2026 at 3:02 PM Thomas Munro <thomas.munro@gmail.com> wrote:
> 1.  We won't need our local llvm::backport::SectionMemoryManager for
> LLVM 22, so it will be nice to draw a line under that messy business.
> See commit message for details.

While that's true, there is a problem with the patch I posted:
"ReserveAlloc" is not enabled when called from C.  I can't actually
reproduce the issue locally due to lack of RAM connected to an ARM
CPU, or I'd have noticed that...  I'll attempt to do something about
that upstream[1], let's see...  if not, we can still use the new
in-tree SectionMemoryManager, but we'll still need some C++ glue code.

[1] https://github.com/llvm/llvm-project/issues/174305

Commits

  1. jit: No backport::SectionMemoryManager for LLVM 22.

  2. jit: Stop emitting lifetime.end for LLVM 22.