[PATCH] D39228: [SCEV] Enhance SCEVFindUnsafe for division

[Evgeny Astigeevich via Phabricator via llvm-commits]

eastig added subscribers: qcolombet, wmi, eastig.
eastig reopened this revision.
eastig added a comment.
This revision is now accepted and ready to land.

Hi,
This patch caused SingleSource/Benchmarks/Shootout/shootout-sieve regression on Arm public bots:

http://lnt.llvm.org/db_default/v4/nts/76950  13.43% 
http://lnt.llvm.org/db_default/v4/nts/77068  10.61%

The affected pass is LSR.
I'll provide more data shortly.

Thanks,
Evgeny Astigeevich
The ARM Compiler Optimization team leader


Repository:
  rL LLVM

https://reviews.llvm.org/D39228