[llvm] [llvm][TargetLowering] `isTruncateFree(Type*, Type*)`: call `isTruncateFree(EVT, EVT)` by default (NFC) (PR #138776)

[Artem Belevich via llvm-commits]

https://github.com/Artem-B commented:

It would be useful to update PR description and elaborate on what makes the changes NFC.

On the surface `isTruncateFree()` does not look like an exact equivalent of `false` it replaces. Nor does it look like the target functions used to override the default implementation.

https://github.com/llvm/llvm-project/pull/138776