From: Mark Wielaard <mark@klomp.org>
To: Allan Sandfeld Jensen <linux@carewolf.com>
Cc: gcc@gcc.gnu.org, binutils@sourceware.org, dwz@sourceware.org
Subject: Re: DWZ 0.14 released
Date: Tue, 9 Mar 2021 10:09:18 +0100 [thread overview]
Message-ID: <20210309090918.GA28954@wildebeest.org> (raw)
In-Reply-To: <7438883.9MRIfJ1mQo@twilight>
Hi Allan,
On Tue, Mar 09, 2021 at 09:06:54AM +0100, Allan Sandfeld Jensen wrote:
> Btw, question for gcc/binutils
>
> Any reason the work done by tools like dwz couldn't be done in the compiler or
> linker? Seems a bit odd to have a post-linker that optimizes the generated
> code, when optimizations should already be enabled.
dwz does two kinds of optimization. First it attempts to optimize the
DWARF debugging information for a given object (executable or shared
library). Secondly it tries to put shared pieces of a list of given
objects into a supplemental file that gets referenced from all the
given object files.
Technically the first optimization could be done by the linker. But
the second optimization is really a post-linker step.
Cheers,
Mark
next prev parent reply other threads:[~2021-03-09 9:10 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-08 12:43 Tom de Vries
2021-03-09 8:06 ` Allan Sandfeld Jensen
2021-03-09 9:09 ` Mark Wielaard [this message]
2021-03-09 11:38 ` Hannes Domani
2021-03-09 11:45 ` Jakub Jelinek
2021-03-12 16:48 ` Nick Alcock
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