.if \do_md
mov r12,r12,lsl #1
ldrneh r7, [r9, r12] @ t = palmd[pmd[0]]
tst lr, #0x20
ldrneb lr, [r11,#-1] @ MD pixel 1
strh r7, [r0], #2
.if \do_md
mov r12,r12,lsl #1
ldrneh r7, [r9, r12] @ t = palmd[pmd[0]]
tst lr, #0x20
ldrneb lr, [r11,#-1] @ MD pixel 1
strh r7, [r0], #2