[llvm] r255286 - [DSE] Disable non-local DSE to see if the bots go green.

[Rafael Espíndola via llvm-commits]

https://drive.google.com/file/d/0B7iRtublysV6U0RoSFdiOFdzNms/view?usp=sharing

That is the IR from a LTO of llvm-ar. Running

opt -std-link-opts t.bc -o t2.bc

on it takes 22.5 seconds on my machine with an opt built with assertions.

With the patch applied opt has been running for 3 minutes already.

Cheers,
Rafael

On 10 December 2015 at 16:01, Chad Rosier <mcrosier at codeaurora.org> wrote:
> Great!! I'll have someone investigate.
>
>> On Dec 10, 2015, at 3:42 PM, Rafael Espíndola <rafael.espindola at gmail.com> wrote:
>>
>> It does. llvm-ar LTOed in a fraction of the time.
>>
>> Thanks,
>> Rafale
>>
>>
>>> On 10 December 2015 at 15:20, Chad Rosier <mcrosier at codeaurora.org> wrote:
>>> Thanks, Hans/Rafael.
>>>
>>> Please let me know if this commit addresses your problem.  If so, I'll have someone investigate before re-enabling the pass.
>>>
>>> Chad
>>>
>>> -----Original Message-----
>>> From: Rafael Espíndola [mailto:rafael.espindola at gmail.com]
>>> Sent: Thursday, December 10, 2015 3:01 PM
>>> To: Hans Wennborg
>>> Cc: Chad Rosier; ibaev at codeaurora.org; llvm-commits
>>> Subject: Re: [llvm] r255286 - [DSE] Disable non-local DSE to see if the bots go green.
>>>
>>> Interesting, I just noticed a lto build taking 20 minutes in llvm-ar.
>>> I wonder if this is why.
>>>
>>> I will git pull and retry.
>>>
>>> Thanks,
>>> Rafael
>>>
>>>
>>> On 10 December 2015 at 14:55, Hans Wennborg via llvm-commits
>>> <llvm-commits at lists.llvm.org> wrote:
>>>> On Thu, Dec 10, 2015 at 11:23 AM, Chad Rosier via llvm-commits
>>>> <llvm-commits at lists.llvm.org> wrote:
>>>>> Author: mcrosier
>>>>> Date: Thu Dec 10 13:23:02 2015
>>>>> New Revision: 255286
>>>>>
>>>>> URL: http://llvm.org/viewvc/llvm-project?rev=255286&view=rev
>>>>> Log:
>>>>> [DSE] Disable non-local DSE to see if the bots go green.
>>>>>
>>>>> I see a few bots timing out, so I'm speculatively disabling r255247.
>>>>
>>>> We saw Chromium builds time out as well, after more than doubled
>>>> compile times, and suspect r255247. Let's see if it improves now.
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>>>