POPCNT (R64, R64)

With unroll_count=500 and no inner loop

Code:

   0:	f3 4d 0f b8 c1       	popcnt r8,r9

Show nanoBench command
Results:
- Instructions retired: 1.0
- Core cycles: 1.0
- Reference cycles: 0.59
- TOPDOWN_RETIRING.ALL: 1.0
- UOPS_MS: 0.0

With loop_count=1000 and unroll_count=10

Code:

   0:	f3 4d 0f b8 c1       	popcnt r8,r9

Show nanoBench command
Results:
- Instructions retired: 1.2
- Core cycles: 1.0
- Reference cycles: 0.61
- TOPDOWN_RETIRING.ALL: 1.2
- UOPS_MS: 0.0

With loop_count=100 and unroll_count=100

Code:

   0:	f3 4d 0f b8 c1       	popcnt r8,r9

Show nanoBench command
Results:
- Instructions retired: 1.02
- Core cycles: 1.0
- Reference cycles: 0.61
- TOPDOWN_RETIRING.ALL: 1.02
- UOPS_MS: 0.0

With 4 independent instructions

With unroll_count=200 and no inner loop

Code:

   0:	f3 4d 0f b8 c1       	popcnt r8,r9
   5:	f3 4d 0f b8 d1       	popcnt r10,r9
   a:	f3 4d 0f b8 d9       	popcnt r11,r9
   f:	f3 4d 0f b8 e1       	popcnt r12,r9

Show nanoBench command
Results:
- Instructions retired: 4.0
- Core cycles: 4.0
- Reference cycles: 2.47
- TOPDOWN_RETIRING.ALL: 4.0
- UOPS_MS: 0.0

With loop_count=1000 and unroll_count=2

Code:

   0:	f3 4d 0f b8 c1       	popcnt r8,r9
   5:	f3 4d 0f b8 d1       	popcnt r10,r9
   a:	f3 4d 0f b8 d9       	popcnt r11,r9
   f:	f3 4d 0f b8 e1       	popcnt r12,r9

Show nanoBench command
Results:
- Instructions retired: 5.0
- Core cycles: 4.01
- Reference cycles: 2.43
- TOPDOWN_RETIRING.ALL: 5.0
- UOPS_MS: 0.0

With loop_count=100 and unroll_count=20

Code:

   0:	f3 4d 0f b8 c1       	popcnt r8,r9
   5:	f3 4d 0f b8 d1       	popcnt r10,r9
   a:	f3 4d 0f b8 d9       	popcnt r11,r9
   f:	f3 4d 0f b8 e1       	popcnt r12,r9

Show nanoBench command
Results:
- Instructions retired: 4.1
- Core cycles: 4.01
- Reference cycles: 2.43
- TOPDOWN_RETIRING.ALL: 4.1
- UOPS_MS: 0.0

With 8 independent instructions

With unroll_count=100 and no inner loop

Code:

   0:	f3 4d 0f b8 c1       	popcnt r8,r9
   5:	f3 4d 0f b8 d1       	popcnt r10,r9
   a:	f3 4d 0f b8 d9       	popcnt r11,r9
   f:	f3 4d 0f b8 e1       	popcnt r12,r9
  14:	f3 4d 0f b8 e9       	popcnt r13,r9
  19:	f3 4d 0f b8 f1       	popcnt r14,r9
  1e:	f3 49 0f b8 d9       	popcnt rbx,r9
  23:	f3 49 0f b8 c9       	popcnt rcx,r9

Show nanoBench command
Results:
- Instructions retired: 8.0
- Core cycles: 8.0
- Reference cycles: 4.94
- TOPDOWN_RETIRING.ALL: 8.0
- UOPS_MS: 0.0

With loop_count=1000 and unroll_count=1

Code:

   0:	f3 4d 0f b8 c1       	popcnt r8,r9
   5:	f3 4d 0f b8 d1       	popcnt r10,r9
   a:	f3 4d 0f b8 d9       	popcnt r11,r9
   f:	f3 4d 0f b8 e1       	popcnt r12,r9
  14:	f3 4d 0f b8 e9       	popcnt r13,r9
  19:	f3 4d 0f b8 f1       	popcnt r14,r9
  1e:	f3 49 0f b8 d9       	popcnt rbx,r9
  23:	f3 49 0f b8 c9       	popcnt rcx,r9

Show nanoBench command
Results:
- Instructions retired: 10.0
- Core cycles: 8.02
- Reference cycles: 4.86
- TOPDOWN_RETIRING.ALL: 10.0
- UOPS_MS: 0.0

With loop_count=100 and unroll_count=10

Code:

   0:	f3 4d 0f b8 c1       	popcnt r8,r9
   5:	f3 4d 0f b8 d1       	popcnt r10,r9
   a:	f3 4d 0f b8 d9       	popcnt r11,r9
   f:	f3 4d 0f b8 e1       	popcnt r12,r9
  14:	f3 4d 0f b8 e9       	popcnt r13,r9
  19:	f3 4d 0f b8 f1       	popcnt r14,r9
  1e:	f3 49 0f b8 d9       	popcnt rbx,r9
  23:	f3 49 0f b8 c9       	popcnt rcx,r9

Show nanoBench command
Results:
- Instructions retired: 8.2
- Core cycles: 8.02
- Reference cycles: 4.85
- TOPDOWN_RETIRING.ALL: 8.2
- UOPS_MS: 0.0

With 12 independent instructions

With unroll_count=100 and no inner loop

Code:

   0:	f3 4d 0f b8 c1       	popcnt r8,r9
   5:	f3 4d 0f b8 d1       	popcnt r10,r9
   a:	f3 4d 0f b8 d9       	popcnt r11,r9
   f:	f3 4d 0f b8 e1       	popcnt r12,r9
  14:	f3 4d 0f b8 e9       	popcnt r13,r9
  19:	f3 4d 0f b8 f1       	popcnt r14,r9
  1e:	f3 49 0f b8 d9       	popcnt rbx,r9
  23:	f3 49 0f b8 c9       	popcnt rcx,r9
  28:	f3 49 0f b8 d1       	popcnt rdx,r9
  2d:	f3 49 0f b8 f9       	popcnt rdi,r9
  32:	f3 49 0f b8 f1       	popcnt rsi,r9
  37:	f3 49 0f b8 e9       	popcnt rbp,r9

Show nanoBench command
Results:
- Instructions retired: 12.0
- Core cycles: 12.0
- Reference cycles: 7.28
- TOPDOWN_RETIRING.ALL: 12.0
- UOPS_MS: 0.0

With loop_count=1000 and unroll_count=1

Code:

   0:	f3 4d 0f b8 c1       	popcnt r8,r9
   5:	f3 4d 0f b8 d1       	popcnt r10,r9
   a:	f3 4d 0f b8 d9       	popcnt r11,r9
   f:	f3 4d 0f b8 e1       	popcnt r12,r9
  14:	f3 4d 0f b8 e9       	popcnt r13,r9
  19:	f3 4d 0f b8 f1       	popcnt r14,r9
  1e:	f3 49 0f b8 d9       	popcnt rbx,r9
  23:	f3 49 0f b8 c9       	popcnt rcx,r9
  28:	f3 49 0f b8 d1       	popcnt rdx,r9
  2d:	f3 49 0f b8 f9       	popcnt rdi,r9
  32:	f3 49 0f b8 f1       	popcnt rsi,r9
  37:	f3 49 0f b8 e9       	popcnt rbp,r9

Show nanoBench command
Results:
- Instructions retired: 14.0
- Core cycles: 12.02
- Reference cycles: 7.28
- TOPDOWN_RETIRING.ALL: 14.0
- UOPS_MS: 0.0

With loop_count=100 and unroll_count=10

Code:

   0:	f3 4d 0f b8 c1       	popcnt r8,r9
   5:	f3 4d 0f b8 d1       	popcnt r10,r9
   a:	f3 4d 0f b8 d9       	popcnt r11,r9
   f:	f3 4d 0f b8 e1       	popcnt r12,r9
  14:	f3 4d 0f b8 e9       	popcnt r13,r9
  19:	f3 4d 0f b8 f1       	popcnt r14,r9
  1e:	f3 49 0f b8 d9       	popcnt rbx,r9
  23:	f3 49 0f b8 c9       	popcnt rcx,r9
  28:	f3 49 0f b8 d1       	popcnt rdx,r9
  2d:	f3 49 0f b8 f9       	popcnt rdi,r9
  32:	f3 49 0f b8 f1       	popcnt rsi,r9
  37:	f3 49 0f b8 e9       	popcnt rbp,r9

Show nanoBench command
Results:
- Instructions retired: 12.2
- Core cycles: 12.02
- Reference cycles: 7.28
- TOPDOWN_RETIRING.ALL: 12.2
- UOPS_MS: 0.0

With the same register for for different operands

With 1 independent instruction

With unroll_count=500 and no inner loop

Code:

   0:	f3 4d 0f b8 c0       	popcnt r8,r8

Show nanoBench command
Results:
- Instructions retired: 1.0
- Core cycles: 3.0
- Reference cycles: 1.82
- TOPDOWN_RETIRING.ALL: 1.0
- UOPS_MS: 0.0

With loop_count=1000 and unroll_count=10

Code:

   0:	f3 4d 0f b8 c0       	popcnt r8,r8

Show nanoBench command
Results:
- Instructions retired: 1.2
- Core cycles: 3.0
- Reference cycles: 1.82
- TOPDOWN_RETIRING.ALL: 1.2
- UOPS_MS: 0.0

With loop_count=100 and unroll_count=100

Code:

   0:	f3 4d 0f b8 c0       	popcnt r8,r8

Show nanoBench command
Results:
- Instructions retired: 1.02
- Core cycles: 3.0
- Reference cycles: 1.82
- TOPDOWN_RETIRING.ALL: 1.02
- UOPS_MS: 0.0

With 4 independent instructions

With unroll_count=200 and no inner loop

Code:

   0:	f3 4d 0f b8 c0       	popcnt r8,r8
   5:	f3 4d 0f b8 c9       	popcnt r9,r9
   a:	f3 4d 0f b8 d2       	popcnt r10,r10
   f:	f3 4d 0f b8 db       	popcnt r11,r11

Show nanoBench command
Results:
- Instructions retired: 4.0
- Core cycles: 4.0
- Reference cycles: 2.47
- TOPDOWN_RETIRING.ALL: 4.0
- UOPS_MS: 0.0

With loop_count=1000 and unroll_count=2

Code:

   0:	f3 4d 0f b8 c0       	popcnt r8,r8
   5:	f3 4d 0f b8 c9       	popcnt r9,r9
   a:	f3 4d 0f b8 d2       	popcnt r10,r10
   f:	f3 4d 0f b8 db       	popcnt r11,r11

Show nanoBench command
Results:
- Instructions retired: 5.0
- Core cycles: 4.01
- Reference cycles: 2.43
- TOPDOWN_RETIRING.ALL: 5.0
- UOPS_MS: 0.0

With loop_count=100 and unroll_count=20

Code:

   0:	f3 4d 0f b8 c0       	popcnt r8,r8
   5:	f3 4d 0f b8 c9       	popcnt r9,r9
   a:	f3 4d 0f b8 d2       	popcnt r10,r10
   f:	f3 4d 0f b8 db       	popcnt r11,r11

Show nanoBench command
Results:
- Instructions retired: 4.1
- Core cycles: 4.01
- Reference cycles: 2.43
- TOPDOWN_RETIRING.ALL: 4.1
- UOPS_MS: 0.0

With 8 independent instructions

With unroll_count=100 and no inner loop

Code:

   0:	f3 4d 0f b8 c0       	popcnt r8,r8
   5:	f3 4d 0f b8 c9       	popcnt r9,r9
   a:	f3 4d 0f b8 d2       	popcnt r10,r10
   f:	f3 4d 0f b8 db       	popcnt r11,r11
  14:	f3 4d 0f b8 e4       	popcnt r12,r12
  19:	f3 4d 0f b8 ed       	popcnt r13,r13
  1e:	f3 4d 0f b8 f6       	popcnt r14,r14
  23:	f3 48 0f b8 db       	popcnt rbx,rbx

Show nanoBench command
Results:
- Instructions retired: 8.0
- Core cycles: 8.0
- Reference cycles: 4.94
- TOPDOWN_RETIRING.ALL: 8.0
- UOPS_MS: 0.0

With loop_count=1000 and unroll_count=1

Code:

   0:	f3 4d 0f b8 c0       	popcnt r8,r8
   5:	f3 4d 0f b8 c9       	popcnt r9,r9
   a:	f3 4d 0f b8 d2       	popcnt r10,r10
   f:	f3 4d 0f b8 db       	popcnt r11,r11
  14:	f3 4d 0f b8 e4       	popcnt r12,r12
  19:	f3 4d 0f b8 ed       	popcnt r13,r13
  1e:	f3 4d 0f b8 f6       	popcnt r14,r14
  23:	f3 48 0f b8 db       	popcnt rbx,rbx

Show nanoBench command
Results:
- Instructions retired: 10.0
- Core cycles: 8.02
- Reference cycles: 4.86
- TOPDOWN_RETIRING.ALL: 10.0
- UOPS_MS: 0.0

With loop_count=100 and unroll_count=10

Code:

   0:	f3 4d 0f b8 c0       	popcnt r8,r8
   5:	f3 4d 0f b8 c9       	popcnt r9,r9
   a:	f3 4d 0f b8 d2       	popcnt r10,r10
   f:	f3 4d 0f b8 db       	popcnt r11,r11
  14:	f3 4d 0f b8 e4       	popcnt r12,r12
  19:	f3 4d 0f b8 ed       	popcnt r13,r13
  1e:	f3 4d 0f b8 f6       	popcnt r14,r14
  23:	f3 48 0f b8 db       	popcnt rbx,rbx

Show nanoBench command
Results:
- Instructions retired: 8.2
- Core cycles: 8.02
- Reference cycles: 4.87
- TOPDOWN_RETIRING.ALL: 8.2
- UOPS_MS: 0.0

With 13 independent instructions

With unroll_count=100 and no inner loop

Code:

   0:	f3 4d 0f b8 c0       	popcnt r8,r8
   5:	f3 4d 0f b8 c9       	popcnt r9,r9
   a:	f3 4d 0f b8 d2       	popcnt r10,r10
   f:	f3 4d 0f b8 db       	popcnt r11,r11
  14:	f3 4d 0f b8 e4       	popcnt r12,r12
  19:	f3 4d 0f b8 ed       	popcnt r13,r13
  1e:	f3 4d 0f b8 f6       	popcnt r14,r14
  23:	f3 48 0f b8 db       	popcnt rbx,rbx
  28:	f3 48 0f b8 c9       	popcnt rcx,rcx
  2d:	f3 48 0f b8 d2       	popcnt rdx,rdx
  32:	f3 48 0f b8 ff       	popcnt rdi,rdi
  37:	f3 48 0f b8 f6       	popcnt rsi,rsi
  3c:	f3 48 0f b8 ed       	popcnt rbp,rbp

Show nanoBench command
Results:
- Instructions retired: 13.0
- Core cycles: 13.0
- Reference cycles: 7.8
- TOPDOWN_RETIRING.ALL: 13.0
- UOPS_MS: 0.0

With loop_count=1000 and unroll_count=1

Code:

   0:	f3 4d 0f b8 c0       	popcnt r8,r8
   5:	f3 4d 0f b8 c9       	popcnt r9,r9
   a:	f3 4d 0f b8 d2       	popcnt r10,r10
   f:	f3 4d 0f b8 db       	popcnt r11,r11
  14:	f3 4d 0f b8 e4       	popcnt r12,r12
  19:	f3 4d 0f b8 ed       	popcnt r13,r13
  1e:	f3 4d 0f b8 f6       	popcnt r14,r14
  23:	f3 48 0f b8 db       	popcnt rbx,rbx
  28:	f3 48 0f b8 c9       	popcnt rcx,rcx
  2d:	f3 48 0f b8 d2       	popcnt rdx,rdx
  32:	f3 48 0f b8 ff       	popcnt rdi,rdi
  37:	f3 48 0f b8 f6       	popcnt rsi,rsi
  3c:	f3 48 0f b8 ed       	popcnt rbp,rbp

Show nanoBench command
Results:
- Instructions retired: 15.0
- Core cycles: 13.02
- Reference cycles: 7.9
- TOPDOWN_RETIRING.ALL: 15.0
- UOPS_MS: 0.0

With loop_count=100 and unroll_count=10

Code:

   0:	f3 4d 0f b8 c0       	popcnt r8,r8
   5:	f3 4d 0f b8 c9       	popcnt r9,r9
   a:	f3 4d 0f b8 d2       	popcnt r10,r10
   f:	f3 4d 0f b8 db       	popcnt r11,r11
  14:	f3 4d 0f b8 e4       	popcnt r12,r12
  19:	f3 4d 0f b8 ed       	popcnt r13,r13
  1e:	f3 4d 0f b8 f6       	popcnt r14,r14
  23:	f3 48 0f b8 db       	popcnt rbx,rbx
  28:	f3 48 0f b8 c9       	popcnt rcx,rcx
  2d:	f3 48 0f b8 d2       	popcnt rdx,rdx
  32:	f3 48 0f b8 ff       	popcnt rdi,rdi
  37:	f3 48 0f b8 f6       	popcnt rsi,rsi
  3c:	f3 48 0f b8 ed       	popcnt rbp,rbp

Show nanoBench command
Results:
- Instructions retired: 13.2
- Core cycles: 13.02
- Reference cycles: 7.9
- TOPDOWN_RETIRING.ALL: 13.2
- UOPS_MS: 0.0

POPCNT (R64, R64) - 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 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 13 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