JIT: Optimize generated functions earlier to lower memory usage
Hackorum builds and tests every patch posted to the lists, not only commitfest submissions. This is Hackorum's own CI rather than the PostgreSQL project's, and it is still under testing - please report anything that looks wrong.
You can run a PostgreSQL built from this patch straight from Docker, with no checkout and no build:
docker run --rm -p 5432:5432 ghcr.io/hackorum-dev/postgres-patch:t41333psql -h localhost -U postgresBuilt from patchset v1 (message #1), October 23, 2026 at 01:18 AM.
Every patchset is also pushed to a branch of our PostgreSQL fork, so you can check out the same tree CI built. Without a PostgreSQL checkout:
git clone --branch t41333_1 https://github.com/hackorum-dev/postgres.gitIn a checkout you already have, add the fork once:
git remote add hackorum https://github.com/hackorum-dev/postgres.gitthen, for this patchset and every later one:
git fetch hackorum t41333_1 && git checkout t41333_1Patchset v1 (message #1) is on t41333_1
Hello,
This is to introduce a patch to lower the memory footprint of JITed
code by optimizing functions at the function level (i.e. with
function-level optimization passes) as soon as they are generated.
This addresses the code comment inside llvm_optimize_module():
/*
* Do function level optimization. This could be moved to the point where
* functions are emitted, to reduce memory usage a bit.
*/
LLVMInitializeFunctionPassManager(llvm_fpm);
--
Soumyadeep (Deep)