[PATCH] D100495: [SLP] Add detection of shuffled/perfect matching of tree entries.

Mon Apr 26 07:50:53 PDT 2021

ABataev added a comment.

In D100495#2716748 <https://reviews.llvm.org/D100495#2716748>, @RKSimon wrote:

> In D100495#2716725 <https://reviews.llvm.org/D100495#2716725>, @ABataev wrote:
>
>> In D100495#2716713 <https://reviews.llvm.org/D100495#2716713>, @RKSimon wrote:
>>
>>> @ABataev If you can email me the IR with/without the masked gathers I can investigate if there's a problem in the backend (or a later pass).
>>
>> What kind of reproducer do you need? The reproducer reported by @phawkins and attached here after SLP vectorizer with and without masked gathers?
>
> Yes please, the IR files emitted after the SLP pass should be sufficient - how much diff is there other than with/without masked gathers ?

Uploaded. They must be quite similar except for some cases where we do not vectorize small trees of height 2 with second gather entry.

Repository:
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  https://reviews.llvm.org/D100495/new/

https://reviews.llvm.org/D100495