[Bug tree-optimization/115864] right shift being optimised out incorrectly

[notzed at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115864

--- Comment #1 from Michael Zutti <notzed at gmail dot com> ---
Created attachment 58629
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58629&action=edit
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