[llvm-branch-commits] [SPARC][IAS] Add aliases for %asr20-21 as defined in JPS1 (PR #94247)

[via llvm-branch-commits]

https://github.com/koachan created https://github.com/llvm/llvm-project/pull/94247

This adds %set_softint and %clear_softint alias for %asr20 and %asr21
as defined in JPS1.