_MUL2_x2
_MUL2_x2(VR0(r), VR1(r)); \
_MUL2_x2(VR2(r), VR3(r)); \
_MUL2_x2(VR0(r), VR1(r)); \
_MUL2_x2(R_01(r)); \
_MUL2_x2(R_23(r)); \
_MUL2_x2(r); \