From: Tom Lane <tgl@sss.pgh.pa.us>
To: hpc researcher_mspk <hpcresearch.mspk@gmail.com>
cc: pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #17200: PostgreSQL-Support Profile Guide
 Optimization(Clang/GCC)?
In-reply-to: 
 <CAL_6wb3WcUQfNExD5Lj0FKs+MdSUtUpazH4X+_yj3SaZyRQGBQ@mail.gmail.com>
References: <17200-d5d5c376327f7197@postgresql.org>
 <CAL_6wb3WcUQfNExD5Lj0FKs+MdSUtUpazH4X+_yj3SaZyRQGBQ@mail.gmail.com>
Comments: In-reply-to hpc researcher_mspk <hpcresearch.mspk@gmail.com>
	message dated "Tue, 28 Sep 2021 11:45:34 +0530"
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-ID: <2834313.1632836376.1@sss.pgh.pa.us>
Date: Tue, 28 Sep 2021 09:39:36 -0400
Message-ID: <2834314.1632836376@sss.pgh.pa.us>
Archived-At: 
 <https://www.postgresql.org/message-id/2834314.1632836376%40sss.pgh.pa.us>
Precedence: bulk

hpc researcher_mspk <hpcresearch.mspk@gmail.com> writes:
> Tried PostgreSQL with GCC-Profile guided optimization(PGO) and it is
> working with the HammerDB benchmark environment. Similarly, we tried
> PostgreSQL with Clang(12.0V) -Profile guided optimization(PGO) and it is
> not working and observed an error
> "warning: default.profraw: Failed to uncompress data (zlib)
> error: No profiles could be merged"

> Are there any plans to fix this issue in upcoming releases?

I see no reason to believe that this is Postgres' problem to fix.
Try filing a bug with the Clang people.

			regards, tom lane