[llvm] [DAG] Add generic expansion for ISD::FCANONICALIZE nodes (PR #142105)

[Dominik Steenken via llvm-commits]

dominik-steenken wrote:

> > > Patch title is now less clear, this is DAG codegen support
> > 
> > 
> > So, something like "DAG codegen support for `llvm.canonicalize`"?
> 
> How about "[DAG] Add generic expansion for ISD::FCANONICALIZE nodes"?
> 
> The summary description still needs work

I have rebased and reworded my commits. Does that suffice? I can also reword/edit the PR description if needed.

https://github.com/llvm/llvm-project/pull/142105