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>
Cc: Matheus Alcantara <matheusssilv97@gmail.com>, Anthonin Bonnefoy <anthonin.bonnefoy@datadoghq.com>
Date: 2026-01-22T02:24:56Z
Lists: pgsql-hackers 
On Sun, Jan 11, 2026 at 8:09 PM Thomas Munro <thomas.munro@gmail.com> wrote:
> A new unrelated assertion started firing in LLVM main/22 a few days ago:
>
>     v_nullbytemask = l_int8_const(lc, 1 << ((attnum) & 0x07));
>     Assertion failed: (llvm::isUIntN(BitWidth, val) && "Value is not
> an N-bit unsigned value")
>
> Here is a fix for that.

22 was branched and RC1 is out, but that particular change was
reverted from 22[1].  It had already been through a commit/revert
cycle before and at a wild guess, it probably caused too much work
elsewhere with not enough notice.  It's still present in main, so
consider the v2-0003 patch booted out of here and into the
not-yet-created LLVM 23 thread...

[1] https://github.com/llvm/llvm-project/commit/16bf1c5d6b7f8fda16da5df5a2b195a6b10d08ed

Commits

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

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