[llvm] [LV] Simplify the chain traversal in `getScaledReductions()` (NFCI) (PR #184830)

[Florian Hahn via llvm-commits]

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@@ -0,0 +1,105 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 6
+; RUN: opt -p loop-vectorize -force-vector-width=8 -force-vector-interleave=1 %s -S | FileCheck %s
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fhahn wrote:

do we need forced VF/IC here?

https://github.com/llvm/llvm-project/pull/184830