BSF (R64, R64)

Experiment 1 (with R9=0)

Instruction: BSF R8, R9

Code:

   0:	4d 0f bc c1          	bsf    r8,r9

Init:
```
MOV R9, 0
```
Show nanoBench command
Results:
- Instructions retired: 1.0
- Core cycles: 3.0
- Reference cycles: 2.8
- UOPS_RETIRED.ANY: 1.0

Experiment 2 (with R9=1)

Instruction: BSF R8, R9

Code:

   0:	4d 0f bc c1          	bsf    r8,r9

Init:
```
MOV R9, 1
```
Show nanoBench command
Results:
- Instructions retired: 1.0
- Core cycles: 3.0
- Reference cycles: 2.84
- UOPS_RETIRED.ANY: 1.0

Experiment 3 (with R9=2)

Instruction: BSF R8, R9

Code:

   0:	4d 0f bc c1          	bsf    r8,r9

Init:
```
MOV R9, 2
```
Show nanoBench command
Results:
- Instructions retired: 1.0
- Core cycles: 3.0
- Reference cycles: 2.84
- UOPS_RETIRED.ANY: 1.0

Experiment 4 (with R9=0)

Instruction: BSF R8, R9
Chain instructions: MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D
Chain latency: 7

Code:

   0:	4d 0f bc c1          	bsf    r8,r9
   4:	4d 63 c0             	movsxd r8,r8d
   7:	4d 63 c0             	movsxd r8,r8d
   a:	4d 63 c0             	movsxd r8,r8d
   d:	4d 63 c0             	movsxd r8,r8d
  10:	4d 63 c0             	movsxd r8,r8d
  13:	4d 63 c0             	movsxd r8,r8d
  16:	4d 63 c0             	movsxd r8,r8d

Init:
```
MOV R9, 0
```
Show nanoBench command
Results:
- Instructions retired: 8.0
- Core cycles: 10.0
- Reference cycles: 9.24
- UOPS_RETIRED.ANY: 8.0

Experiment 5 (with R9=1)

Instruction: BSF R8, R9
Chain instructions: MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D
Chain latency: 7

Code:

   0:	4d 0f bc c1          	bsf    r8,r9
   4:	4d 63 c0             	movsxd r8,r8d
   7:	4d 63 c0             	movsxd r8,r8d
   a:	4d 63 c0             	movsxd r8,r8d
   d:	4d 63 c0             	movsxd r8,r8d
  10:	4d 63 c0             	movsxd r8,r8d
  13:	4d 63 c0             	movsxd r8,r8d
  16:	4d 63 c0             	movsxd r8,r8d

Init:
```
MOV R9, 1
```
Show nanoBench command
Results:
- Instructions retired: 8.0
- Core cycles: 10.0
- Reference cycles: 9.16
- UOPS_RETIRED.ANY: 8.0

Experiment 6 (with R9=2)

Instruction: BSF R8, R9
Chain instructions: MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D
Chain latency: 7

Code:

   0:	4d 0f bc c1          	bsf    r8,r9
   4:	4d 63 c0             	movsxd r8,r8d
   7:	4d 63 c0             	movsxd r8,r8d
   a:	4d 63 c0             	movsxd r8,r8d
   d:	4d 63 c0             	movsxd r8,r8d
  10:	4d 63 c0             	movsxd r8,r8d
  13:	4d 63 c0             	movsxd r8,r8d
  16:	4d 63 c0             	movsxd r8,r8d

Init:
```
MOV R9, 2
```
Show nanoBench command
Results:
- Instructions retired: 8.0
- Core cycles: 10.0
- Reference cycles: 9.24
- UOPS_RETIRED.ANY: 8.0

Experiment 1 (with R9=0)

Instruction: BSF R8, R9
Chain instructions: CMOVZ R15, R15;MOVSX R8, R15D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D
Chain latency: 9

Code:

   0:	4d 0f bc c1          	bsf    r8,r9
   4:	4d 0f 44 ff          	cmove  r15,r15
   8:	4d 63 c7             	movsxd r8,r15d
   b:	4d 63 c0             	movsxd r8,r8d
   e:	4d 63 c0             	movsxd r8,r8d
  11:	4d 63 c0             	movsxd r8,r8d
  14:	4d 63 c0             	movsxd r8,r8d
  17:	4d 63 c0             	movsxd r8,r8d
  1a:	4d 63 c0             	movsxd r8,r8d

Init:
```
MOV R9, 0
```
Show nanoBench command
Results:
- Instructions retired: 9.0
- Core cycles: 12.0
- Reference cycles: 11.04
- UOPS_RETIRED.ANY: 10.0

Experiment 2 (with R9=1)

Instruction: BSF R8, R9
Chain instructions: CMOVZ R15, R15;MOVSX R8, R15D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D
Chain latency: 9

Code:

   0:	4d 0f bc c1          	bsf    r8,r9
   4:	4d 0f 44 ff          	cmove  r15,r15
   8:	4d 63 c7             	movsxd r8,r15d
   b:	4d 63 c0             	movsxd r8,r8d
   e:	4d 63 c0             	movsxd r8,r8d
  11:	4d 63 c0             	movsxd r8,r8d
  14:	4d 63 c0             	movsxd r8,r8d
  17:	4d 63 c0             	movsxd r8,r8d
  1a:	4d 63 c0             	movsxd r8,r8d

Init:
```
MOV R9, 1
```
Show nanoBench command
Results:
- Instructions retired: 9.0
- Core cycles: 12.0
- Reference cycles: 11.08
- UOPS_RETIRED.ANY: 10.0

Experiment 3 (with R9=2)

Instruction: BSF R8, R9
Chain instructions: CMOVZ R15, R15;MOVSX R8, R15D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D
Chain latency: 9

Code:

   0:	4d 0f bc c1          	bsf    r8,r9
   4:	4d 0f 44 ff          	cmove  r15,r15
   8:	4d 63 c7             	movsxd r8,r15d
   b:	4d 63 c0             	movsxd r8,r8d
   e:	4d 63 c0             	movsxd r8,r8d
  11:	4d 63 c0             	movsxd r8,r8d
  14:	4d 63 c0             	movsxd r8,r8d
  17:	4d 63 c0             	movsxd r8,r8d
  1a:	4d 63 c0             	movsxd r8,r8d

Init:
```
MOV R9, 2
```
Show nanoBench command
Results:
- Instructions retired: 9.0
- Core cycles: 12.0
- Reference cycles: 11.04
- UOPS_RETIRED.ANY: 10.0

BSF (R64, R64) - Latency

Operands

Latency operand 1 → 1: 3

Latency operand 1 → 3: 3

Latency operand 2 → 1: 3

Latency operand 2 → 3: 3

Latency operand 1 → 1: 3

Experiment 1 (with R9=0)

Experiment 2 (with R9=1)

Experiment 3 (with R9=2)

Experiment 4 (with R9=0)

Experiment 5 (with R9=1)

Experiment 6 (with R9=2)

Latency operand 1 → 3: 3

Experiment 1 (with R9=0)

Experiment 2 (with R9=1)

Experiment 3 (with R9=2)

Latency operand 2 → 1: 3

Experiment 1

Latency operand 2 → 3: 3

Experiment 1