[llvm] [LoopUnroll] Invalidate SCEV after full unrolling (PR #208874)

[Hongyu Chen via llvm-commits]

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+; RUN: opt -S -passes='loop(loop-idiom,indvars,loop-deletion,loop-unroll-full,loop-idiom,indvars),simplifycfg,instcombine' %s | FileCheck %s
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XChy wrote:

Are passes other than `loop-unroll-full` and `indvars` also required to reproduce?

https://github.com/llvm/llvm-project/pull/208874