llvm-project/llvm/test/CodeGen/Thumb2/thumb2-rev16.ll

; XFAIL: *
; fixme rev16 pattern is not matching

; RUN: llc < %s -mtriple=thumb-- -mcpu=arm1156t2-s -mattr=+thumb2 | grep "rev16\W*r[0-9]*,\W*r[0-9]*" | count 1

; 0xff00ff00 = 4278255360
; 0x00ff00ff = 16711935
define i32 @f1(i32 %a) {
    %l8 = shl i32 %a, 8
    %r8 = lshr i32 %a, 8
    %mask_l8 = and i32 %l8, 4278255360
    %mask_r8 = and i32 %r8, 16711935
    %tmp = or i32 %mask_l8, %mask_r8
    ret i32 %tmp
}

; 0xff000000 = 4278190080
; 0x00ff0000 = 16711680
; 0x0000ff00 = 65280
; 0x000000ff = 255
define i32 @f2(i32 %a) {
    %l8 = shl i32 %a, 8
    %r8 = lshr i32 %a, 8
    %masklo_l8 = and i32 %l8, 65280
    %maskhi_l8 = and i32 %l8, 4278190080
    %masklo_r8 = and i32 %r8, 255
    %maskhi_r8 = and i32 %r8, 16711680
    %tmp1 = or i32 %masklo_l8, %masklo_r8
    %tmp2 = or i32 %maskhi_l8, %maskhi_r8
    %tmp = or i32 %tmp1, %tmp2
    ret i32 %tmp
}