[llvm] [GlobalISel] Combine (sext (trunc x)) to (sext_inreg x) (PR #131622)

[Pierre van Houtryve via llvm-commits]

Pierre-vh wrote:

* **#131624** <a href="https://app.graphite.dev/github/pr/llvm/llvm-project/131624?utm_source=stack-comment-icon" target="_blank"><img src="https://static.graphite.dev/graphite-32x32-black.png" alt="Graphite" width="10px" height="10px"/></a>
* **#131623** <a href="https://app.graphite.dev/github/pr/llvm/llvm-project/131623?utm_source=stack-comment-icon" target="_blank"><img src="https://static.graphite.dev/graphite-32x32-black.png" alt="Graphite" width="10px" height="10px"/></a>
* **#131622** <a href="https://app.graphite.dev/github/pr/llvm/llvm-project/131622?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.dev/github/pr/llvm/llvm-project/131622?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/131622