[llvm-dev] Why doesn't this `and` get eliminated

[Riyaz Puthiyapurayil via llvm-dev]

define dso_local i32 @f(i32 %0) {
  %2 = and i32 %0, 7
  %3 = icmp eq i32 %2, 7
  %4 = zext i1 %3 to i32
  ret i32 %4
}

I thought instcombine would remove it. It doesn't and nothing else does either. LLVM Version is 10.0.0.

/Riyaz
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