[llvm] [HEXAGON] AddrModeOpt support for HVX and optmize adds (PR #106368)

[Brian Cain via llvm-commits]

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+# It is not safe to make the transformation if the definition is killed by a call.
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androm3da wrote:

Does this file belong in `llvm/test/CodeGen/MIR/Hexagon/` instead?

https://github.com/llvm/llvm-project/pull/106368