[llvm] [SPARC] Add a test for `half` support (NFC) (PR #152723)

[via llvm-commits]

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+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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+; RUN: llc %s -o - -mtriple=sparc-linux-gnu           | FileCheck %s -check-prefixes=CHECK,SMARC32,V8
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koachan wrote:

`SMARC32` typo?

https://github.com/llvm/llvm-project/pull/152723