[llvm] [VPlan][LV] Fix invalid truncation in VPScalarIVStepsRecipe (PR #137832)

[Luke Lau via llvm-commits]

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@@ -0,0 +1,31 @@
+; RUN: opt -passes=loop-vectorize -S < %s > /dev/null
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lukel97 wrote:

Instead of piping to /dev/null you can pass `-disable-output`. But it's probably still useful to include the output by running this with ./llvm/utils/update_test_checks.py

https://github.com/llvm/llvm-project/pull/137832