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Re: [RFC v2 15/15] target/riscv: rvb: support and turn on B-extension fr
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From: |
Richard Henderson |
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Subject: |
Re: [RFC v2 15/15] target/riscv: rvb: support and turn on B-extension from command line |
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Date: |
Wed, 16 Dec 2020 12:31:48 -0600 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 |
On 12/16/20 3:14 AM, Kito Cheng wrote:
> Hi Alistair, Frank:
>
> Should we add the bext_spec option like Vector-ext? I would suggest
> adding one to align the behavior between V and B.
> But I have no strong opinion for this.
>
I don't think there's any point in that. The experimental extension will be
updated without backward compatibility until it reaches 1.0. After which we
could add one, *if* we expected there to be future incompatible changes.
r~
- [RFC v2 12/15] target/riscv: rvb: generalized or-combine, (continued)
- [RFC v2 12/15] target/riscv: rvb: generalized or-combine, frank . chang, 2020/12/15
- [RFC v2 13/15] target/riscv: rvb: address calculation, frank . chang, 2020/12/15
- [RFC v2 14/15] target/riscv: rvb: add/sub with postfix zero-extend, frank . chang, 2020/12/15
- [RFC v2 11/15] target/riscv: rvb: generalized reverse, frank . chang, 2020/12/15
- [RFC v2 15/15] target/riscv: rvb: support and turn on B-extension from command line, frank . chang, 2020/12/15