[llvm] [LV][NFC] Move and add truncated-related FindLastIV reduction test cases. (PR #67674)

[Ramkumar Ramachandra via llvm-commits]

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@@ -0,0 +1,285 @@
+; RUN: opt -passes=loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -S < %s | FileCheck %s --check-prefix=CHECK
+; RUN: opt -passes=loop-vectorize -force-vector-interleave=4 -force-vector-width=4 -S < %s | FileCheck %s --check-prefix=CHECK
+; RUN: opt -passes=loop-vectorize -force-vector-interleave=4 -force-vector-width=1 -S < %s | FileCheck %s --check-prefix=CHECK
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artagnon wrote:

Please remove `--check-prefix=CHECK`, as it is the default check prefix.

https://github.com/llvm/llvm-project/pull/67674