ADD (AL, I8) - Throughput and Uops

With unroll_count=500 and no inner loop

• Code:

     0:	04 02                	add    al,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 1.0
  • Core cycles: 1.0
  • Reference cycles: 0.96
  • UOPS_RETIRED.ALL: 1.0
  • UOPS_MS: 0.0

With loop_count=1000 and unroll_count=10

• Code:

     0:	04 02                	add    al,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 1.2
  • Core cycles: 1.01
  • Reference cycles: 1.03
  • UOPS_RETIRED.ALL: 1.2
  • UOPS_MS: 0.0

With loop_count=100 and unroll_count=100

• Code:

     0:	04 02                	add    al,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 1.02
  • Core cycles: 1.0
  • Reference cycles: 1.03
  • UOPS_RETIRED.ALL: 1.02
  • UOPS_MS: 0.0

With additional dependency-breaking instructions

With unroll_count=500 and no inner loop

• Code:

     0:	48 31 c0             	xor    rax,rax
     3:	04 02                	add    al,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 2.0
  • Core cycles: 0.5
  • Reference cycles: 0.54
  • UOPS_RETIRED.ALL: 2.0
  • UOPS_MS: 0.0

With loop_count=1000 and unroll_count=10

• Code:

     0:	48 31 c0             	xor    rax,rax
     3:	04 02                	add    al,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 2.2
  • Core cycles: 0.55
  • Reference cycles: 0.57
  • UOPS_RETIRED.ALL: 2.2
  • UOPS_MS: 0.0

With loop_count=100 and unroll_count=100

• Code:

     0:	48 31 c0             	xor    rax,rax
     3:	04 02                	add    al,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 2.02
  • Core cycles: 0.51
  • Reference cycles: 0.52
  • UOPS_RETIRED.ALL: 2.02
  • UOPS_MS: 0.0