[Bug tree-optimization/98954] ((X << CST0) & CST1) == 0 is not optimized to 0 == (X & (CST1 >> CST0))

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98954

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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  Attachment #50271|0                           |1
        is obsolete|                            |

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 51911
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51911&action=edit
New patch

New partial patch, still need testcases. But this fixes this bug, PR 98956 and
PR 64992 .