[Bug target/95704] PPC: int128 shifts should be implemented branchless

[jens.seifert at de dot ibm.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95704

--- Comment #1 from Jens Seifert <jens.seifert at de dot ibm.com> ---
Created attachment 48742
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48742&action=edit
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