POPCNT (R16, R16)

With unroll_count=500 and no inner loop

Code:

   0:	66 f3 45 0f b8 c1    	popcnt r8w,r9w

Show nanoBench command
Results:
- Instructions retired: 1.0
- Core cycles: 4.0
- Reference cycles: 2.52
- UOPS_RETIRED.ANY: 2.0
- UOPS_MS: 2.0

With loop_count=1000 and unroll_count=10

Code:

   0:	66 f3 45 0f b8 c1    	popcnt r8w,r9w

Show nanoBench command
Results:
- Instructions retired: 1.2
- Core cycles: 1.51
- Reference cycles: 0.98
- UOPS_RETIRED.ANY: 2.2
- UOPS_MS: 2.0

With loop_count=100 and unroll_count=100

Code:

   0:	66 f3 45 0f b8 c1    	popcnt r8w,r9w

Show nanoBench command
Results:
- Instructions retired: 1.02
- Core cycles: 4.01
- Reference cycles: 2.62
- UOPS_RETIRED.ANY: 2.02
- UOPS_MS: 2.0

With 4 independent instructions

With unroll_count=200 and no inner loop

Code:

   0:	66 f3 45 0f b8 c1    	popcnt r8w,r9w
   6:	66 f3 45 0f b8 d1    	popcnt r10w,r9w
   c:	66 f3 45 0f b8 d9    	popcnt r11w,r9w
  12:	66 f3 45 0f b8 e1    	popcnt r12w,r9w

Show nanoBench command
Results:
- Instructions retired: 4.0
- Core cycles: 16.0
- Reference cycles: 10.34
- UOPS_RETIRED.ANY: 8.0
- UOPS_MS: 8.0

With loop_count=1000 and unroll_count=2

Code:

   0:	66 f3 45 0f b8 c1    	popcnt r8w,r9w
   6:	66 f3 45 0f b8 d1    	popcnt r10w,r9w
   c:	66 f3 45 0f b8 d9    	popcnt r11w,r9w
  12:	66 f3 45 0f b8 e1    	popcnt r12w,r9w

Show nanoBench command
Results:
- Instructions retired: 5.0
- Core cycles: 6.06
- Reference cycles: 3.94
- UOPS_RETIRED.ANY: 9.0
- UOPS_MS: 8.0

With loop_count=100 and unroll_count=20

Code:

   0:	66 f3 45 0f b8 c1    	popcnt r8w,r9w
   6:	66 f3 45 0f b8 d1    	popcnt r10w,r9w
   c:	66 f3 45 0f b8 d9    	popcnt r11w,r9w
  12:	66 f3 45 0f b8 e1    	popcnt r12w,r9w

Show nanoBench command
Results:
- Instructions retired: 4.1
- Core cycles: 16.04
- Reference cycles: 10.45
- UOPS_RETIRED.ANY: 8.1
- UOPS_MS: 8.0

With 8 independent instructions

With unroll_count=100 and no inner loop

Code:

   0:	66 f3 45 0f b8 c1    	popcnt r8w,r9w
   6:	66 f3 45 0f b8 d1    	popcnt r10w,r9w
   c:	66 f3 45 0f b8 d9    	popcnt r11w,r9w
  12:	66 f3 45 0f b8 e1    	popcnt r12w,r9w
  18:	66 f3 45 0f b8 e9    	popcnt r13w,r9w
  1e:	66 f3 45 0f b8 f1    	popcnt r14w,r9w
  24:	66 f3 41 0f b8 d9    	popcnt bx,r9w
  2a:	66 f3 41 0f b8 c9    	popcnt cx,r9w

Show nanoBench command
Results:
- Instructions retired: 8.0
- Core cycles: 32.0
- Reference cycles: 21.06
- UOPS_RETIRED.ANY: 16.0
- UOPS_MS: 16.0

With loop_count=1000 and unroll_count=1

Code:

   0:	66 f3 45 0f b8 c1    	popcnt r8w,r9w
   6:	66 f3 45 0f b8 d1    	popcnt r10w,r9w
   c:	66 f3 45 0f b8 d9    	popcnt r11w,r9w
  12:	66 f3 45 0f b8 e1    	popcnt r12w,r9w
  18:	66 f3 45 0f b8 e9    	popcnt r13w,r9w
  1e:	66 f3 45 0f b8 f1    	popcnt r14w,r9w
  24:	66 f3 41 0f b8 d9    	popcnt bx,r9w
  2a:	66 f3 41 0f b8 c9    	popcnt cx,r9w

Show nanoBench command
Results:
- Instructions retired: 10.0
- Core cycles: 12.11
- Reference cycles: 7.89
- UOPS_RETIRED.ANY: 18.0
- UOPS_MS: 16.0

With loop_count=100 and unroll_count=10

Code:

   0:	66 f3 45 0f b8 c1    	popcnt r8w,r9w
   6:	66 f3 45 0f b8 d1    	popcnt r10w,r9w
   c:	66 f3 45 0f b8 d9    	popcnt r11w,r9w
  12:	66 f3 45 0f b8 e1    	popcnt r12w,r9w
  18:	66 f3 45 0f b8 e9    	popcnt r13w,r9w
  1e:	66 f3 45 0f b8 f1    	popcnt r14w,r9w
  24:	66 f3 41 0f b8 d9    	popcnt bx,r9w
  2a:	66 f3 41 0f b8 c9    	popcnt cx,r9w

Show nanoBench command
Results:
- Instructions retired: 8.2
- Core cycles: 32.08
- Reference cycles: 20.97
- UOPS_RETIRED.ANY: 16.2
- UOPS_MS: 16.0

With 12 independent instructions

With unroll_count=100 and no inner loop

Code:

   0:	66 f3 45 0f b8 c1    	popcnt r8w,r9w
   6:	66 f3 45 0f b8 d1    	popcnt r10w,r9w
   c:	66 f3 45 0f b8 d9    	popcnt r11w,r9w
  12:	66 f3 45 0f b8 e1    	popcnt r12w,r9w
  18:	66 f3 45 0f b8 e9    	popcnt r13w,r9w
  1e:	66 f3 45 0f b8 f1    	popcnt r14w,r9w
  24:	66 f3 41 0f b8 d9    	popcnt bx,r9w
  2a:	66 f3 41 0f b8 c9    	popcnt cx,r9w
  30:	66 f3 41 0f b8 d1    	popcnt dx,r9w
  36:	66 f3 41 0f b8 f9    	popcnt di,r9w
  3c:	66 f3 41 0f b8 f1    	popcnt si,r9w
  42:	66 f3 41 0f b8 e9    	popcnt bp,r9w

Show nanoBench command
Results:
- Instructions retired: 12.0
- Core cycles: 48.0
- Reference cycles: 31.2
- UOPS_RETIRED.ANY: 24.0
- UOPS_MS: 24.0

With loop_count=1000 and unroll_count=1

Code:

   0:	66 f3 45 0f b8 c1    	popcnt r8w,r9w
   6:	66 f3 45 0f b8 d1    	popcnt r10w,r9w
   c:	66 f3 45 0f b8 d9    	popcnt r11w,r9w
  12:	66 f3 45 0f b8 e1    	popcnt r12w,r9w
  18:	66 f3 45 0f b8 e9    	popcnt r13w,r9w
  1e:	66 f3 45 0f b8 f1    	popcnt r14w,r9w
  24:	66 f3 41 0f b8 d9    	popcnt bx,r9w
  2a:	66 f3 41 0f b8 c9    	popcnt cx,r9w
  30:	66 f3 41 0f b8 d1    	popcnt dx,r9w
  36:	66 f3 41 0f b8 f9    	popcnt di,r9w
  3c:	66 f3 41 0f b8 f1    	popcnt si,r9w
  42:	66 f3 41 0f b8 e9    	popcnt bp,r9w

Show nanoBench command
Results:
- Instructions retired: 14.0
- Core cycles: 17.27
- Reference cycles: 11.3
- UOPS_RETIRED.ANY: 26.0
- UOPS_MS: 24.0

With loop_count=100 and unroll_count=10

Code:

   0:	66 f3 45 0f b8 c1    	popcnt r8w,r9w
   6:	66 f3 45 0f b8 d1    	popcnt r10w,r9w
   c:	66 f3 45 0f b8 d9    	popcnt r11w,r9w
  12:	66 f3 45 0f b8 e1    	popcnt r12w,r9w
  18:	66 f3 45 0f b8 e9    	popcnt r13w,r9w
  1e:	66 f3 45 0f b8 f1    	popcnt r14w,r9w
  24:	66 f3 41 0f b8 d9    	popcnt bx,r9w
  2a:	66 f3 41 0f b8 c9    	popcnt cx,r9w
  30:	66 f3 41 0f b8 d1    	popcnt dx,r9w
  36:	66 f3 41 0f b8 f9    	popcnt di,r9w
  3c:	66 f3 41 0f b8 f1    	popcnt si,r9w
  42:	66 f3 41 0f b8 e9    	popcnt bp,r9w

Show nanoBench command
Results:
- Instructions retired: 12.2
- Core cycles: 48.08
- Reference cycles: 32.81
- UOPS_RETIRED.ANY: 24.2
- UOPS_MS: 24.0

With the same register for for different operands

With unroll_count=500 and no inner loop

Code:

   0:	66 f3 45 0f b8 c0    	popcnt r8w,r8w

Show nanoBench command
Results:
- Instructions retired: 1.0
- Core cycles: 4.0
- Reference cycles: 2.57
- UOPS_RETIRED.ANY: 2.0
- UOPS_MS: 2.0

With loop_count=1000 and unroll_count=10

Code:

   0:	66 f3 45 0f b8 c0    	popcnt r8w,r8w

Show nanoBench command
Results:
- Instructions retired: 1.2
- Core cycles: 4.04
- Reference cycles: 2.64
- UOPS_RETIRED.ANY: 2.2
- UOPS_MS: 2.0

With loop_count=100 and unroll_count=100

Code:

   0:	66 f3 45 0f b8 c0    	popcnt r8w,r8w

Show nanoBench command
Results:
- Instructions retired: 1.02
- Core cycles: 4.01
- Reference cycles: 2.61
- UOPS_RETIRED.ANY: 2.02
- UOPS_MS: 2.0

POPCNT (R16, R16) - Throughput and Uops

With different registers for different operands

With 1 independent instruction

With unroll_count=500 and no inner loop

With loop_count=1000 and unroll_count=10

With loop_count=100 and unroll_count=100

With 4 independent instructions

With unroll_count=200 and no inner loop

With loop_count=1000 and unroll_count=2

With loop_count=100 and unroll_count=20

With 8 independent instructions

With unroll_count=100 and no inner loop

With loop_count=1000 and unroll_count=1

With loop_count=100 and unroll_count=10

With 12 independent instructions

With unroll_count=100 and no inner loop

With loop_count=1000 and unroll_count=1

With loop_count=100 and unroll_count=10

With the same register for for different operands

With unroll_count=500 and no inner loop

With loop_count=1000 and unroll_count=10

With loop_count=100 and unroll_count=100