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From: Jan Beulich <jbeulich@suse.com>
To: Li Xu <xuli1@eswincomputing.com>
Cc: kito.cheng@gmail.com, palmer@dabbelt.com, binutils@sourceware.org
Subject: Re: [PATCH] RISC-V: Warn in AS if vsew/vlmul/vtype is reserved.
Date: Fri, 19 May 2023 08:21:54 +0200	[thread overview]
Message-ID: <ee50f3f8-44ba-c425-4b92-2eebddcf0532@suse.com> (raw)
In-Reply-To: <20230518065950.6166-1-xuli1@eswincomputing.com>

On 18.05.2023 08:59, Li Xu wrote:
> Consider the following case:
> 
> vsetvli  a0, a1,  0x4           # unrecognized vlmul
> vsetvli  a0, a1,  0x20          # unrecognized vsew
> vsetvli  a0, a1, 0x700          # unrecognized vtype
> 
> The current AS doesn't have any hints, so I think
> it's better to give a warning.
> 
> After this patch:
> test.s: Assembler messages:
> test.s:1: Warning: The vtype encoding of vlmul = 0x4 is reserved.
> test.s:2: Warning: The vtype encoding of vsew = 0x4 is reserved.
> test.s:3: Warning: The vtype encoding of 0x700 is reserved.

But then I think there wants to be a way to silence these warnings,
which may be of interest if any of the presently reserved values
gains a meaning.

Jan

  reply	other threads:[~2023-05-19  6:21 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-18  6:59 Li Xu
2023-05-19  6:21 ` Jan Beulich [this message]
2023-05-19  2:14 Li Xu

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