[Bug rtl-optimization/85925] [7/8/9 regression] Mis-compilation at -02, masking with 257 goes wrong in combine

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85925

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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  Attachment #45029|0                           |1
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--- Comment #19 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Created attachment 45031
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45031&action=edit
Tentative fix #4

Slightly improved.