[llvm] [NVPTX] Derive f16 atomic FTZ behavior from the f16 denormal mode (PR #217584)

[Christian Sigg via llvm-commits]

chsigg wrote:

* **#217588** <a href="https://app.graphite.com/github/pr/llvm/llvm-project/217588?utm_source=stack-comment-icon" target="_blank"><img src="https://static.graphite.dev/graphite-32x32-black.png" alt="Graphite" width="10px" height="10px"/></a>
* **#217587** <a href="https://app.graphite.com/github/pr/llvm/llvm-project/217587?utm_source=stack-comment-icon" target="_blank"><img src="https://static.graphite.dev/graphite-32x32-black.png" alt="Graphite" width="10px" height="10px"/></a>
* **#217586** <a href="https://app.graphite.com/github/pr/llvm/llvm-project/217586?utm_source=stack-comment-icon" target="_blank"><img src="https://static.graphite.dev/graphite-32x32-black.png" alt="Graphite" width="10px" height="10px"/></a>
* **#217585** <a href="https://app.graphite.com/github/pr/llvm/llvm-project/217585?utm_source=stack-comment-icon" target="_blank"><img src="https://static.graphite.dev/graphite-32x32-black.png" alt="Graphite" width="10px" height="10px"/></a>
* **#217584** <a href="https://app.graphite.com/github/pr/llvm/llvm-project/217584?utm_source=stack-comment-icon" target="_blank"><img src="https://static.graphite.dev/graphite-32x32-black.png" alt="Graphite" width="10px" height="10px"/></a> 👈 <a href="https://app.graphite.com/github/pr/llvm/llvm-project/217584?utm_source=stack-comment-view-in-graphite" target="_blank">(View in Graphite)</a>
* `main`


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https://github.com/llvm/llvm-project/pull/217584