AMD AMD5K86 - Integer Dot Product Example

AMD~
AMD5xB6 Processor Technical Reference Manual
TABLE 4-1. Integer Instructions (continued)
Instruction Mnemonic
Opcode Format
SHRD mem, reg, imm
SHRD reg, reg, CL
SHRD mem, reg, CL
SUB reg, reg
SUB reg, mem
SUB mem, reg
SUB AL/AXIEAX, imm
SUB reg, imm
SUBmem,imm
TEST reg, reg
TEST mem, reg
TEST reg, imm
TEST AL/AX/EAX, imm
TEST mem, imm
XCHG reg, reg
XCHG mem, reg
XOR reg, reg
4-16
Fastpath or
Microcode
M
F
M
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
18524B/O-Mar1996
Execution
Unit Timing
alu1 1/1
ld 1/1
alu1 2/2
st 2/2/3
alu1 1/1
alu1 2/2
alu1 1/1
ld 1/1
alu1 2/2
st 2/2/3
alu 1/1
ld 1/1
alu 1/2
ld 1/1
alu 1/2
st 1/1/3
alu 1/1
alu 1/1
ld 111
alu 1/2
st 1/1/3
alu 1/1
ld 111
alu 112
alu 1/1
alu 1/1
ld 1/1
alu 1/2
alu
alu
alu
alu
alu
alu
ld
st
alu
alu
111
1/1
2/2
1/1
1/1
2/2
1/1
1/112
112
1/1
Performance