[llvm-dev] Status of the ARC backend

[Pete Couperus via llvm-dev]

Hello,

We have an internal bot to make sure it keeps building and passing tests.
We have only had to make a couple of minor changes to fix breakages that weren't noticed and fixed by others first.

Pete

-----Original Message-----
From: Fangrui Song <maskray at google.com> 
Sent: Friday, February 21, 2020 4:41 PM
To: llvm-dev <llvm-dev at lists.llvm.org>
Cc: Nico Weber <thakis at chromium.org>; Pete Couperus <petecoup at synopsys.com>
Subject: [llvm-dev] Status of the ARC backend

On 2020-02-14, Nico Weber via llvm-dev wrote:
>Pros:
>- LLVM's release binaries contain AVR support :)
>- It'd happen to remove the only backend that's currently marked 
>experimental, which imho makes the build config easier to understand
>
>Cons:
>- Everyone gets to pay the cost for maintaining AVR for cross-cutting 
>changes. From the last 3 months, this seems to happen once or twice a 
>month. We have a bit over 100 commits/day, so that seems fine.
>- By default all backends get linked, so all binaries get larger by the 
>size of the AVR backend (but people who care probably already have an 
>explicit list of enabled targets)
>
>Mixed:
>- The AVR backend will likely grow more users, which might expose bugs 
>:)
>
>From an outsider's perspective (mine), the AVR backend seems in better 
>shape than some non-experimental targets.
>
>On Fri, Feb 14, 2020 at 12:13 PM Chris Lattner <clattner at nondot.org> wrote:
>
>> What do you see as the pros and cons of making it a stable target?  
>> Does anyone else have any concerns about doing so?
>>
>> -Chris
>>
>> On Feb 14, 2020, at 7:59 AM, Nico Weber via llvm-dev < 
>> llvm-dev at lists.llvm.org> wrote:
>>
>> +better dylanmckay address
>>
>> On Fri, Feb 14, 2020 at 10:58 AM Nico Weber <thakis at chromium.org> wrote:
>>
>>> Hi,
>>>
>>> There was a thread a few days ago about the expectations for 
>>> experimental targets. At the moment, the only experimental target is 
>>> AVR. It's been in the tree for a long time now, and generally seems well-behaved.
>>>
>>> Should we just make it a normal target?
>>>
>>> Nico

ARC is another experimental target Nico forgot to mention in https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.llvm.org_pipermail_llvm-2Ddev_2020-2DFebruary_139158.html&d=DwIBAg&c=DPL6_X_6JkXFx7AXWqB0tg&r=gUu06VtePB3jAvKtVZk7VEwJPmI8hDrxkOumP5OmHV4&m=krK4XsChsggb8T1C4_yqp6ai0uhqkqz01QilcFzrJ-U&s=utXbYC94kM-9Bjr-egGUzPLIRMLXUeKZTbu7odkyQ0A&e=  .

What is its status?