https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71779
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
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Component|target |rtl-optimization
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
BY the way it looks like combine:
> The next major change is after combine, which merges the zero_extract in with
> some other operations...
Should not have done that because of the way paradoxical subreg are defined as
not caring about the top bits of the register.