L21_DESC
SIG_EXPR_DECL_SINGLE(ROMA15, ROM8, L21_DESC, VPO_OFF_12);
SIG_EXPR_DECL_SINGLE(ROMA15, ROM16, L21_DESC, VPO_OFF_12);
SIG_EXPR_DECL_SINGLE(VPOG5, VPO24, L21_DESC, VPO24_DESC);
SIG_EXPR_DECL_SINGLE(VPOG5, VPOOFF1, L21_DESC, VPOOFF1_DESC);