[Bug tree-optimization/82854] more missing simplifcations

[andi-gcc at firstfloor dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82854

--- Comment #1 from Andi Kleen <andi-gcc at firstfloor dot org> ---
Also I suppose a lot of them could be generalized to 8/16/64bit.