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Summary: As [[ https://bugs.llvm.org/show_bug.cgi?id=45360 | PR45360 ]] reports, with new cost-model we can sometimes end up being able to expand `udiv`/`urem` instructions. And that exposes at least one instance of when we do that regardless of whether or not it is safe to do. In this particular case, it's `SimplifyIndvar::replaceIVUserWithLoopInvariant()`. It seems to me, we simply need to check with `isSafeToExpandAt()` first. The test isn't great. I'm not sure how to make it only run `-indvars`. Fixes [[ https://bugs.llvm.org/show_bug.cgi?id=45360 | PR45360 ]]. Reviewers: mkazantsev, reames, helloqirun Reviewed By: mkazantsev Subscribers: hiraditya, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D82108
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