[PATCH] D102615: [LoopDeletion] Break backedge if we can prove that the loop is exited on 1st iteration (try 3)

[Max Kazantsev via Phabricator via llvm-commits]

mkazantsev added a comment.

In D102615#2790546 <https://reviews.llvm.org/D102615#2790546>, @mkazantsev wrote:

> In D102615#2790191 <https://reviews.llvm.org/D102615#2790191>, @xbolva00 wrote:
>
>> In D102615#2778811 <https://reviews.llvm.org/D102615#2778811>, @xbolva00 wrote:
>>
>>> Can this patch optimize code from comment #4 in https://bugs.llvm.org/show_bug.cgi?id=47491 ?
>>
>> Btw, any comment?
>
> Let me check.

It doesn't, and it shouldn't. There is no 1 iteration loops here, and the existing loop gets fully unrolled.


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