mov ax, mm0 ; add [bx+si], al
mov ax, xmm0 ; add [bx+si], al
mov ax, ymm0 ; add [bx+si], al
+ mov ax, xmm16 ; add [bx+si], al
+ mov ax, zmm0 ; add [bx+si], al
.arch generic32
.code32
mov eax, mm0
mov eax, xmm0
mov eax, ymm0
+ mov eax, xmm16
+ mov eax, zmm0
.arch .387
ffree st