[llvm-branch-commits] [llvm] [AMDGPU] Mark `amdgcn_tanh` as canonicalized (PR #150059)

[Shilei Tian via llvm-branch-commits]

shiltian wrote:

### Merge activity

* **Jul 22, 11:55 PM UTC**: A user started a stack merge that includes this pull request via [Graphite](https://app.graphite.dev/github/pr/llvm/llvm-project/150059).


https://github.com/llvm/llvm-project/pull/150059