SH-2A Datasheet, PDF (487/501 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Section 8 Pipeline Operation
(18) Floating-Point Compare Instructions
Instruction Types
FCMP/EQ
FCMP/GT
FCMP/EQ
FCMP/GT
FRm,FRn
FRm,FRn
DRm,DRn
DRm,DRn
Pipeline
• Single-Precision
Instruction A
Next instruction
Instruction after next
↔ ↔ ↔ ↔ ↔ ↔ ↔ Slots
IF ID EX
: CPU pipeline
IF DF E1 E2
: FPU pipeline
IF ID EX ⋅ ⋅ ⋅
: CPU pipeline
IF DF EX NA SF
: FPU pipeline
IF ID EX ⋅ ⋅ ⋅
: CPU pipeline
IF DF E1 E2 SF : FPU pipeline
• Double-Precision
Instruction A
Next instruction
Instruction after next
↔ ↔ ↔ ↔ ↔ ↔ ↔ Slots
IF ID EX EX
: CPU pipeline
IF DF E1 E1 E2
: FPU pipeline
IF — ID EX ⋅ ⋅ ⋅
: CPU pipeline
IF — DF EX NA SF
: FPU pipeline
IF — ID EX ⋅ ⋅ ⋅
: CPU pipeline
IF — DF EX NA SF : FPU pipeline
Rev. 3.00 Jul 08, 2005 page 473 of 484
REJ09B0051-0300