[TBAA] Invalid TBAA added to libcalls

[wsmoses]

See https://godbolt.org/z/nc5E4js4Y

  %call = tail call double @cos(double noundef %x) #2, !dbg !18, !tbaa !19
  !19 = !{!20, !20, i64 0}
  !20 = !{!"int", !21, i64 0}

This should have double not int as the tbaa on it, no?

possibly related: #100302

@vfdff @arsenm

[wsmoses]

Oh I see, this is due to the setting of errno, not the input/result.