[llvm] [LV] Support interleaving with FindLast reductions (PR #184099)

[Florian Hahn via llvm-commits]

================
@@ -0,0 +1,185 @@
+; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 6
+; RUN: opt -passes=loop-vectorize -vplan-print-after="printFinalVPlan$" \
+; RUN: -force-vector-width=4 -force-vector-interleave=4 -force-target-supports-masked-memory-ops -disable-output 2>&1 < %s | FileCheck %s --check-prefix=IC4
----------------
fhahn wrote:

I think you could use `-force-vector-interleave=2` instead to keep things more compact without loss of generality

https://github.com/llvm/llvm-project/pull/184099