[llvm] [msan][test] Add another target("aarch64.svcount") test case (PR #164343)

[Thurston Dang via llvm-commits]

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@@ -1,5 +1,5 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt -S -passes=msan -mattr=+sme -o - %s | FileCheck %s
+; RUN: opt -S -passes=msan -mattr=+sme -o - %s 2>&1
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thurstond wrote:

Not necessary. Removed.

https://github.com/llvm/llvm-project/pull/164343