[llvm] Add support for single reductions in ComplexDeinterleavingPass (PR #112875)

[Nicholas Guy via llvm-commits]

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@@ -1,41 +1,100 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
-; RUN: opt -S --passes=complex-deinterleaving %s --mattr=+sve2 -o - | FileCheck %s
+; RUN: opt -S --passes=complex-deinterleaving %s --mattr=+sve2 -o - | FileCheck %s --check-prefix=CHECK-SVE2
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NickGuy-Arm wrote:

I've added a negative test, but the caching is an implementation detail and is not exposed in any testable way, it's also not new in this PR

https://github.com/llvm/llvm-project/pull/112875