[llvm] [LoongArch] Permit auto-vectorization using LSX/LASX with `auto-vec` feature (PR #78943)

[Florian Hahn via llvm-commits]

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@@ -0,0 +1,65 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
+; RUN: opt < %s -passes=loop-vectorize -mtriple loongarch64-linux-gnu -mattr=+lasx,+auto-vec -S 2>&1 | FileCheck %s
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fhahn wrote:

remove `2>&1`, this test doesn't check debug output.

https://github.com/llvm/llvm-project/pull/78943