[Bug rtl-optimization/66706] Redundant bitmask instruction on x >> (n & 32)

[guojiufu at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66706
Bug 66706 depends on bug 66552, which changed state.

Bug 66552 Summary: Missed optimization when shift amount is result of signed modulus
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66552

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED