[PATCH] D114650: [SCEV] Construct SCEV iteratively.

Florian Hahn via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Wed Jul 13 21:32:47 PDT 2022


fhahn added a comment.

In D114650#3641601 <https://reviews.llvm.org/D114650#3641601>, @fhahn wrote:

> In D114650#3639074 <https://reviews.llvm.org/D114650#3639074>, @foad wrote:
>
>> Hi! We are seeing some large compile time increases with this patch. For example on F23720290 <https://reviews.llvm.org/F23720290>, the time for `opt -passes=loop-unroll` goes from about 2s to 14s while producing identical output.
>
> Interesting, I'll take a look

I put up a fix: D129731 <https://reviews.llvm.org/D129731>


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