[llvm] [LV] Autovectorization for the all-in-one histogram intrinsic (PR #91458)

[Paschalis Mpeis via llvm-commits]

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@@ -0,0 +1,82 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3
+; RUN: opt < %s -passes=loop-vectorize -force-vector-interleave=1 -force-target-instruction-cost=1 -S | FileCheck %s
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paschalis-mpeis wrote:

Eventually we want this to be controlled using only `-aarch64-base-histcnt-cost=1` ?

https://github.com/llvm/llvm-project/pull/91458