AN2203 Freescale Semiconductor / Motorola, AN2203 Datasheet - Page 73

• Manufacturer Part Number: AN2203
• Description: MPC7450 RISC Microprocessor Family Software Optimization Guide
• Manufacturer: Freescale Semiconductor / Motorola

Table A-11 lists vector permute (VPU) instruction latencies.
MOTOROLA
Table A-10. AltiVec Operations—Vector Floating-Point Unit (continued)
MPC7450 RISC Microprocessor Family Software Optimization Guide
1
vnmsubfp
vrefp
vrfim
vrfin
vrfip
vrfiz
vrsqrtefp
vsubfp
vmrghb
vmrghh
vmrghw
vmrglb
vmrglh
vmrglw
vperm
vpkpx
vpkshss
vpkshus
vpkswss
vpkswus
vpkuhum
vpkuhus
vpkuwum
vpkuwus
vsl
vsldoi
vslo
vspltb
In Java mode, MPC7400 VFPU instructions need a fifth cycle of
execution (5:1) but data dependencies are still forwarded from the end
of the fourth cycle as in non-Java mode.
Mnemonic
Mnemonic
Table A-11. AltiVec Operations—Vector Permute Unit
Freescale Semiconductor, Inc.
For More Information On This Product,
VALU-VFPU
VALU-VFPU
VALU-VFPU
VALU-VFPU
VALU-VFPU
VALU-VFPU
VALU-VFPU
VALU-VFPU
VALU-VSIU
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VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
Unit
Unit
MPC7400
MPC7400
Cycles
Cycles
4:1
4:1
4:1
4:1
4:1
4:1
4:1
4:1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
VFPU
VFPU
VFPU
VFPU
VFPU
VFPU
VFPU
VFPU
Unit
Unit
VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
VPU
MPC7450
MPC7450
MPC7450 Execution Latencies
Cycles
Cycles
4:1
4:1
4:1
4:1
4:1
4:1
4:1
4:1
2:1
2:1
2:1
2:1
2:1
2:1
2:1
2:1
2:1
2:1
2:1
2:1
2:1
2:1
2:1
2:1
2:1
2:1
2:1
2:1
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