From: Jan Beulich <jbeulich@suse.com>
To: Dmitry Selyutin <ghostmansd@gmail.com>
Cc: lkcl <luke.leighton@gmail.com>,
Binutils <binutils@sourceware.org>, Alan Modra <amodra@gmail.com>
Subject: Re: Teaching expression() to treat some operations specially
Date: Tue, 12 Jul 2022 13:39:36 +0200 [thread overview]
Message-ID: <488b7097-702b-cefa-ac3e-0c1c7c5ec145@suse.com> (raw)
In-Reply-To: <CAMqzjetddoeUfmfCbsV60Gn=aCvOkbk-nkk_9hmQ-UinRTJoww@mail.gmail.com>
On 12.07.2022 13:17, Dmitry Selyutin wrote:
> On Tue, Jul 12, 2022 at 1:44 PM Jan Beulich <jbeulich@suse.com> wrote:
>> why again can't you deal with *
>> there (converting the thing to an X_md<N> expression)?
>
> Actually this is what we already do. :-)
> https://git.libre-soc.org/?p=binutils-gdb.git;a=blob;f=gas/config/tc-ppc.c;h=989d1a29a56a364cdfcce6b670f7466ff8eaaeea;hb=refs/heads/svp64-ng#l4238
>
> There are two issues:
> 1. Handle register names in macros in a uniform way.
Note that from all I can tell equates (which is what I think you
mean) are a problem for expression in a wider sense. Things get
especially "interesting" once using transitive equates ...
Jan
> 2. Handle unary * operator.
>
> The thread became a bit confusing due to these questions being
> somewhat related (e.g. whether these should be parsed in the same
> place).
> My point was, since * is indeed an unary operator, it's kind of
> natural for it to be handled at md_operator.
> However, we can stick to md_operand, no problems; so the second
> question is already solved.
> As for the first one, I'm now preparing a patch for it (it's also
> about md_operand, anyway).
> I attempt to make the code somewhat more straightforward and generic,
> and also handle X_md stuff at port's side.
> I'll update on this. Thank you for your help and advice!
>
next prev parent reply other threads:[~2022-07-12 11:39 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-09 16:47 Dmitry Selyutin
2022-07-11 1:01 ` Alan Modra
2022-07-11 2:33 ` lkcl
2022-07-11 3:08 ` Alan Modra
2022-07-11 14:28 ` Dmitry Selyutin
2022-07-11 19:13 ` Dmitry Selyutin
2022-07-11 23:37 ` Alan Modra
2022-07-12 4:18 ` Dmitry Selyutin
2022-07-12 6:25 ` Jan Beulich
2022-07-12 6:47 ` Dmitry Selyutin
2022-07-12 6:57 ` Jan Beulich
2022-07-12 8:50 ` Dmitry Selyutin
2022-07-12 10:44 ` Jan Beulich
2022-07-12 11:17 ` Dmitry Selyutin
2022-07-12 11:39 ` Jan Beulich [this message]
2022-07-12 9:01 ` Dmitry Selyutin
2022-07-12 6:58 ` Dmitry Selyutin
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