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

[Sam Tebbs via llvm-commits]

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@@ -0,0 +1,58 @@
+; 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
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SamTebbs33 wrote:

We need some more tests, such as:
* No sve, no sve2
* More rotations
* I don't really understand the caching system, but some tests that test that functionality are needed
* More types

And negative tests for other code paths.

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