[llvm] [LoopVectorize] LLVM fails to vectorise loops with multi-bool varables (PR #89226)

[David Sherwood via llvm-commits]

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@@ -0,0 +1,883 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
+; RUN: opt -passes=loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -S < %s | FileCheck %s --check-prefix=CHECK
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david-arm wrote:

I think it probably makes sense to add these tests to the existing select-cmp.ll test file. However, if you prefer to leave them in this new file you should add some more RUN lines to cover more cases. For example, these two might test different scenarios ..

```
; RUN: opt -passes=loop-vectorize -force-vector-interleave=2 -force-vector-width=4 -S < %s | FileCheck %s --check-prefix=CHECK-VF4-IC2
; RUN: opt -passes=loop-vectorize -force-vector-interleave=2 -force-vector-width=1 -S < %s | FileCheck %s --check-prefix=CHECK-VF1-IC2
```

https://github.com/llvm/llvm-project/pull/89226