[llvm] 4b33b23 - Reapply "[LV] Vectorize (some) early and multiple exit loops"" w/fix for builder

[Philip Reames via llvm-commits]

On 4/8/21 9:44 AM, Philip Reames via llvm-commits wrote:
>
>
> On 4/8/21 8:05 AM, Florian Hahn wrote:
>> Hi Philip,
>>
>>> On Dec 28, 2020, at 18:15, Philip Reames via llvm-commits 
>>> <llvm-commits at lists.llvm.org <mailto:llvm-commits at lists.llvm.org>> 
>>> wrote:
>>>
>>>
>>> Author: Philip Reames
>>> Date: 2020-12-28T10:13:28-08:00
>>> New Revision: 4b33b2387787aef5020450cdcc8dde231eb0a5fc
>>>
>>> URL: 
>>> https://github.com/llvm/llvm-project/commit/4b33b2387787aef5020450cdcc8dde231eb0a5fc 
>>> <https://github.com/llvm/llvm-project/commit/4b33b2387787aef5020450cdcc8dde231eb0a5fc>
>>> DIFF: 
>>> https://github.com/llvm/llvm-project/commit/4b33b2387787aef5020450cdcc8dde231eb0a5fc.diff 
>>> <https://github.com/llvm/llvm-project/commit/4b33b2387787aef5020450cdcc8dde231eb0a5fc.diff>
>>>
>>> LOG: Reapply "[LV] Vectorize (some) early and multiple exit loops"" 
>>> w/fix for builder
>>>
>>> This reverts commit 4ffcd4fe9ac2ee948948f732baa16663eb63f1c7 thus 
>>> restoring e4df6a40dad.
>>>
>>> The only change from the original patch is to add "llvm::" before 
>>> the call to empty(iterator_range).  This is a speculative fix for 
>>> the ambiguity reported on some builders.
>>
>> It looks like the following failure started with the patch: 
>> https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33029 
>> <https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33029>
>>
>> It would be great if you could take a look.
>
> Happy to, but I'm going to need more information in this thread.  
> Looking at the chromium issue, I can download the test case, but the 
> detailed report information requires authentication.  Can you copy the 
> stack trace and reproduction instructions (e.g. what command line 
> arguments, etc..) into this email thread?
>
Actually, ignore this.  I realized I can reproduce on the test case with 
a simple invocation of "opt -loop-vectorize".

>
>>
>> Cheers,
>> Florian
>
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