[llvm] AMDGPU: Support local atomicrmw fmin/fmax for float/double (PR #95590)

[Matt Arsenault via llvm-commits]

arsenm wrote:

* **#95592** <a href="https://app.graphite.dev/github/pr/llvm/llvm-project/95592?utm_source=stack-comment-icon" target="_blank"><img src="https://static.graphite.dev/graphite-32x32-black.png" alt="Graphite" width="10px" height="10px"/></a>
* **#95591** <a href="https://app.graphite.dev/github/pr/llvm/llvm-project/95591?utm_source=stack-comment-icon" target="_blank"><img src="https://static.graphite.dev/graphite-32x32-black.png" alt="Graphite" width="10px" height="10px"/></a>
* **#95590** <a href="https://app.graphite.dev/github/pr/llvm/llvm-project/95590?utm_source=stack-comment-icon" target="_blank"><img src="https://static.graphite.dev/graphite-32x32-black.png" alt="Graphite" width="10px" height="10px"/></a> 👈
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https://github.com/llvm/llvm-project/pull/95590