{
int offset;
/* Hard registers can be reused for multiple purposes within the same
function, so setting REG_ATTRS, REG_POINTER and REG_POINTER_ALIGN
on them is wrong. */
if (HARD_REGISTER_P (reg))
return;
offset = byte_lowpart_offset (GET_MODE (reg), GET_MODE (x));
if (MEM_P (x))