Re: [Xen-devel] [PATCH] build: Rename as-insn-check to as-insn-add

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 22/02/18 13:39, Jan Beulich wrote:
>>>> On 22.02.18 at 13:39, <george.dunlap@xxxxxxxxxx> wrote:
>> On 02/22/2018 12:22 PM, Jan Beulich wrote:
>>>>>> On 22.02.18 at 12:41, <andrew.cooper3@xxxxxxxxxx> wrote:
>>>> On 22/02/18 11:33, Jan Beulich wrote:
>>>>>>>> On 22.02.18 at 11:51, <andrew.cooper3@xxxxxxxxxx> wrote:
>>>>>> as-insn-check mutates the passed-in flags.  Rename it to as-insn-add, in 
>>>>>> line
>>>>>> with cc-option-add.  Update all callers.
>>>>> I'm not convinced - cc-option-add makes relatively clear that
>>>>> something is being added to the options passed to CC. If I
>>>>> take as-insn-add this way, the macro would need to add an
>>>>> insn to the AS invocation. While I agree as-insn-check doesn't
>>>>> make clear that it adds any options, I still find this less
>>>>> misleading than the suggested new name. Let's see what
>>>>> others think.
>>>> I'm open to better name suggestions.
>>> The best I can come up with is, well, as-insn-check, as that
>>> reasonably describes at least part of what the construct does.
>>> as-insn-check-and-add-option, besides being too long, isn't
>>> meaningfully better.
>> We're definitely getting into bikeshed territory here.
> Indeed, but I think a change in name should be an improvement,
> not going from one questionable name to another questionable
> one.
>
>>  I agree with
>> Andy that 'check' doesn't really convey that something changed.  Is the
>> check-and-add "add it if it doesn't exist already"?  Or add it if some
>> other check passes / fails?
> It is "check if this piece of assembly assembles and add the
> provided option to the indicated variable", extended by Roger's
> patch to "..., and add the other provided option if it doesn't
> assemble".

Ok - how do we unblock this?

There appears to be agreement that as-insn-check isn't a great name, and
my proposed as-insn-add isn't much better.

The base runes of as-insn and cc-option are compatible.  They check the
fragment, and yield one of two options.  cc-option-add and as-insn-check
are built on top of the base runes, and mutate the flags passed in.

as-check-frag-update-option ?

~Andrew

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