From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
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To: | Theo Schlossnagle <jesus(at)omniti(dot)com> |
Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Alan Stange <stange(at)rentec(dot)com>, pgsql-ports(at)postgresql(dot)org |
Subject: | Re: solaris build problem with Sun compilers |
Date: | 2006-05-18 00:30:52 |
Message-ID: | 200605180030.k4I0UqV13733@candle.pha.pa.us |
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Thread: | |
Lists: | pgsql-ports |
Theo Schlossnagle wrote:
> > Oh, I just found this email that has a simplified sparc8 asm:
> >
> > http://archives.postgresql.org/pgsql-ports/2006-05/msg00025.php
> >
> > Attached is the new solaris_sparc.s file with the #ifdef sparc8 test;
> > applied.
>
> I don't think that asm does what you think it does. That hex
> encoding of the cas instruction doesn't work on Sparcv8, only
> sparcv8plus. The reason that it is hacked that way is that, for
> other reasons, they can't use the -xarch=v8plus flag (despite
> compiling on v8plus capable chips). Basically that code hardcodes a
> v8plus instruction into a v8 binary "knowing" that it will never run
> on a non-v8plus capable chip. The reason that they can do this is
> because they (as I understand it) open solaris won't support any
> chips so old as to not run v8plus code.
>
> We shouldn't be suffering from that problem and -xarch=v8plus should
> be used to produce 32-bit binaries and -xarch=v9 should be used to
> produce 64-bit sparc binaries. I can't think of a reason to every
> compile the Postgres source with -xarch=v8 instead of -xarch=v8plus,
> the latter will produce much better code overall.
OK, so what do you suggest? Remove that URL from the comments?
Anything else?
--
Bruce Momjian http://candle.pha.pa.us
EnterpriseDB http://www.enterprisedb.com
+ If your life is a hard drive, Christ can be your backup. +
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