#define M_SSEXT(a,b) emit_movswq_reg_reg(cd, (a), (b))
#define M_ISEXT(a,b) emit_movslq_reg_reg(cd, (a), (b))
+#define M_BZEXT(a,b) emit_movzbq_reg_reg(cd, (a), (b))
#define M_CZEXT(a,b) emit_movzwq_reg_reg(cd, (a), (b))
#define M_ISLL_IMM(a,b) emit_shiftl_imm_reg(cd, SHIFT_SHL, (a), (b))