test/Analysis/ScalarEvolution/and-xor.ll

; RUN: llvm-as < %s | opt -scalar-evolution -analyze -disable-output \
; RUN:   | grep {\\-->  (zext} | count 2

define i32 @foo(i32 %x) {
  %n = and i32 %x, 255
  %y = xor i32 %n, 255
  ret i32 %y
}