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Re: [PATCH+DOC] Print registers not saved in the frame as "<not saved>", instead of "<optimized out>".
- From: Mark Kettenis <mark dot kettenis at xs4all dot nl>
- To: eliz at gnu dot org
- Cc: palves at redhat dot com, aburgess at broadcom dot com, gdb-patches at sourceware dot org, mark dot kettenis at xs4all dot nl
- Date: Wed, 18 Sep 2013 22:47:24 +0200 (CEST)
- Subject: Re: [PATCH+DOC] Print registers not saved in the frame as "<not saved>", instead of "<optimized out>".
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> Date: Wed, 18 Sep 2013 19:30:07 +0300
> From: Eli Zaretskii <eliz@gnu.org>
>
> Also, shouldn't we mention optimizations as (the main) reason for
> registers being unavailable?
I don't consider optimisations as an important cause of registers not
being saved. It is primarily a consequence of the fact that most ABIs
reserve some registers as "scratch" registers that don't need to be
saved.