| From: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
|---|---|
| To: | Devrim Gündüz <devrim(at)gunduz(dot)org> |
| Cc: | pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Guiding principle for dropping LLVM versions? |
| Date: | 2023-10-20 02:36:21 |
| Message-ID: | CA+hUKGJy5fz46B5arUE3qQmgCk9myb9np2gh_PpFng1a1Xb71g@mail.gmail.com |
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| Lists: | pgsql-hackers |
We could go further. With LLVM 14 as the minimum we can just use
opaque pointers everywhere, and delete more conditional code in
master. Tested on 14-18.
I explored using the new pass manager everywhere too. It almost
worked, but I couldn't see how to override the inlining threshold
before LLVM 16[1], even in C++, so we couldn't fix that with a
llvmjit_wrap.cpp hack.
I like this. How can I find out if someone would shout at me for
dropping LLVM 13?
[1] https://github.com/llvm/llvm-project/commit/4fa328074efd7eefdbb314b8f6e9f855e443ca20
| Attachment | Content-Type | Size |
|---|---|---|
| v2-0001-jit-Require-at-least-LLVM-14-if-enabled.patch | text/x-patch | 27.8 KB |
| v2-0002-jit-Use-opaque-pointers-in-all-supported-LLVM-ver.patch | text/x-patch | 7.9 KB |
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