https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117132
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to LIU Hao from comment #2) > (In reply to Andrew Pinski from comment #1) > > It depends on the ABI, some require the extension while others don't. > > PR 14441 is for a target which has the extension. > > This is not about sign-extension but truncation which I think should always > be safe. It depends on the target. Some targets require you to have an extended (either zero/sign) return in the register. Witness why I said PR 14441 for targets that require to have an extended version in the register ...
