Renesas M32R-FPU - Manual (Page 174)

APPENDICES
APPENDICES-16 M32R-FPU Software Manual (Rev.1.01)
Appendix Figure 3.2.7 Pipeline Flow with Stalls (5)
<Case 12> The FPU and FMADD/FMSUB instructions run consecutively (with no register dependency)
IF D E1 E2 WB
IF D WB E2
D WB E2 E1 stall
IF D E2 WB EA EM
EA EM
stall
IF
<Case 13> The FPU and FMADD/FMSUB instructions run consecutively (with register dependency)
FADD R0,R1,R10
FADD R5,R6,R11
FMADD R2,R3,R4
FMADD R7,R8,R9
IF D E1 E2 WB
IF D WB E2
D WB E2 E1 stall
D stall
stall stall
stall stall stall stall
EA EM
stall stall
IF
FADD R0 ,R1,R10
FADD R0 , R0 ,R11
FMADD R0 , R0 ,R4
FMADD R0 ,R8,R9 IF WB E2 EA EM stall stall stall
APPENDIX 3
Appendix 3 Pipeline Processing