[llvm] [LV] fix logical error in trunc cost (PR #91136)

[Florian Hahn via llvm-commits]

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@@ -1,7 +1,139 @@
-; REQUIRES: asserts
-; RUN: not --crash opt -passes=loop-vectorize -mtriple=s390x -mcpu=z14 -disable-output %s
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
+; RUN: opt -passes=loop-vectorize,dce,simplifycfg -mtriple=s390x -mcpu=z14 -S %s | FileCheck %s
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fhahn wrote:

We usually try to avoid having the tests depend on other passes, to avoid them breaking if other passes change.

https://github.com/llvm/llvm-project/pull/91136