; RUN: llvm-as < %s | llc -march=x86

implementation

declare int %llvm.readport (ushort)
declare void %llvm.writeport (int, ushort)

uint %in (uint %p) {
  %i1 = call int(ushort)* %llvm.readport (ushort 255)
  ret uint 5
}


uint %out (uint %p) {
  call void(int, ushort)* %llvm.writeport (int 1, ushort 255)
  ret uint 5
}