[llvm] [Transforms] Expand optimizeTan to fold more inverse trig pairs (PR #77799)

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

> @dtcxzyw Is this ready to merge?

Please wait for approval from @arsenm or @jcranmer-intel.


https://github.com/llvm/llvm-project/pull/77799