CMPXCHG_LOCK (M16, R16) - Port Usage

With lfence (to avoid incorrect counts due to replays)

Code:

   0:	66 f0 45 0f b1 06    	lock cmpxchg WORD PTR [r14],r8w
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	0f ae e8             	lfence

Show nanoBench command
Results:
- Instructions retired: 12.0
- Core cycles: 32.51
- Reference cycles: 22.73
- UOPS_DISPATCHED.INT_EU_ALL: 8.0
- UOPS_DISPATCHED.ALU: 7.0
- UOPS_DISPATCHED.LD: 1.0
- UOPS_DISPATCHED.SLOW: 0.0
- UOPS_DISPATCHED.STD: 2.0
- UOPS_DISPATCHED.SHIFT: 0.0
- UOPS_DISPATCHED.JMP: 1.0
- UOPS_DISPATCHED.STA: 1.0

No uops

With an indexed addressing mode

With lfence (to avoid incorrect counts due to replays)

Code:

   0:	66 f0 47 0f b1 04 2e 	lock cmpxchg WORD PTR [r14+r13*1],r8w
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	0f ae e8             	lfence

Init:
```
XOR R13, R13
```
Show nanoBench command
Results:
- Instructions retired: 12.0
- Core cycles: 32.51
- Reference cycles: 22.56
- UOPS_DISPATCHED.INT_EU_ALL: 8.0
- UOPS_DISPATCHED.ALU: 7.0
- UOPS_DISPATCHED.LD: 1.0
- UOPS_DISPATCHED.SLOW: 0.0
- UOPS_DISPATCHED.STD: 2.0
- UOPS_DISPATCHED.SHIFT: 0.0
- UOPS_DISPATCHED.JMP: 1.0
- UOPS_DISPATCHED.STA: 1.0

No uops