IMUL (R64, R64)

With unroll_count=500 and no inner loop

Code:

   0:	4d 0f af c1          	imul   r8,r9

Show nanoBench command
Results:
- Instructions retired: 1.0
- Core cycles: 13.01
- Reference cycles: 13.01
- UOPS_RETIRED.ANY: 6.0
- UOPS_MS: 6.0

With loop_count=1000 and unroll_count=10

Code:

   0:	4d 0f af c1          	imul   r8,r9

Show nanoBench command
Results:
- Instructions retired: 1.2
- Core cycles: 13.01
- Reference cycles: 13.01
- UOPS_RETIRED.ANY: 6.2
- UOPS_MS: 6.0

With loop_count=100 and unroll_count=100

Code:

   0:	4d 0f af c1          	imul   r8,r9

Show nanoBench command
Results:
- Instructions retired: 1.02
- Core cycles: 13.02
- Reference cycles: 13.02
- UOPS_RETIRED.ANY: 6.02
- UOPS_MS: 6.0

With 4 independent instructions

With unroll_count=200 and no inner loop

Code:

   0:	4d 0f af c1          	imul   r8,r9
   4:	4d 0f af d1          	imul   r10,r9
   8:	4d 0f af d9          	imul   r11,r9
   c:	4d 0f af e1          	imul   r12,r9

Show nanoBench command
Results:
- Instructions retired: 4.0
- Core cycles: 44.36
- Reference cycles: 44.37
- UOPS_RETIRED.ANY: 24.0
- UOPS_MS: 23.99

With loop_count=1000 and unroll_count=2

Code:

   0:	4d 0f af c1          	imul   r8,r9
   4:	4d 0f af d1          	imul   r10,r9
   8:	4d 0f af d9          	imul   r11,r9
   c:	4d 0f af e1          	imul   r12,r9

Show nanoBench command
Results:
- Instructions retired: 5.0
- Core cycles: 45.36
- Reference cycles: 45.36
- UOPS_RETIRED.ANY: 25.0
- UOPS_MS: 24.01

With loop_count=100 and unroll_count=20

Code:

   0:	4d 0f af c1          	imul   r8,r9
   4:	4d 0f af d1          	imul   r10,r9
   8:	4d 0f af d9          	imul   r11,r9
   c:	4d 0f af e1          	imul   r12,r9

Show nanoBench command
Results:
- Instructions retired: 4.1
- Core cycles: 44.68
- Reference cycles: 44.67
- UOPS_RETIRED.ANY: 24.1
- UOPS_MS: 24.01

With 8 independent instructions

With unroll_count=100 and no inner loop

Code:

   0:	4d 0f af c1          	imul   r8,r9
   4:	4d 0f af d1          	imul   r10,r9
   8:	4d 0f af d9          	imul   r11,r9
   c:	4d 0f af e1          	imul   r12,r9
  10:	4d 0f af e9          	imul   r13,r9
  14:	4d 0f af f1          	imul   r14,r9
  18:	49 0f af d9          	imul   rbx,r9
  1c:	49 0f af c9          	imul   rcx,r9

Show nanoBench command
Results:
- Instructions retired: 8.0
- Core cycles: 88.13
- Reference cycles: 88.13
- UOPS_RETIRED.ANY: 48.0
- UOPS_MS: 47.98

With loop_count=1000 and unroll_count=1

Code:

   0:	4d 0f af c1          	imul   r8,r9
   4:	4d 0f af d1          	imul   r10,r9
   8:	4d 0f af d9          	imul   r11,r9
   c:	4d 0f af e1          	imul   r12,r9
  10:	4d 0f af e9          	imul   r13,r9
  14:	4d 0f af f1          	imul   r14,r9
  18:	49 0f af d9          	imul   rbx,r9
  1c:	49 0f af c9          	imul   rcx,r9

Show nanoBench command
Results:
- Instructions retired: 10.0
- Core cycles: 89.17
- Reference cycles: 89.17
- UOPS_RETIRED.ANY: 50.0
- UOPS_MS: 48.02

With loop_count=100 and unroll_count=10

Code:

   0:	4d 0f af c1          	imul   r8,r9
   4:	4d 0f af d1          	imul   r10,r9
   8:	4d 0f af d9          	imul   r11,r9
   c:	4d 0f af e1          	imul   r12,r9
  10:	4d 0f af e9          	imul   r13,r9
  14:	4d 0f af f1          	imul   r14,r9
  18:	49 0f af d9          	imul   rbx,r9
  1c:	49 0f af c9          	imul   rcx,r9

Show nanoBench command
Results:
- Instructions retired: 8.2
- Core cycles: 88.32
- Reference cycles: 88.32
- UOPS_RETIRED.ANY: 48.2
- UOPS_MS: 48.02

With 12 independent instructions

With unroll_count=100 and no inner loop

Code:

   0:	4d 0f af c1          	imul   r8,r9
   4:	4d 0f af d1          	imul   r10,r9
   8:	4d 0f af d9          	imul   r11,r9
   c:	4d 0f af e1          	imul   r12,r9
  10:	4d 0f af e9          	imul   r13,r9
  14:	4d 0f af f1          	imul   r14,r9
  18:	49 0f af d9          	imul   rbx,r9
  1c:	49 0f af c9          	imul   rcx,r9
  20:	49 0f af d1          	imul   rdx,r9
  24:	49 0f af f9          	imul   rdi,r9
  28:	49 0f af f1          	imul   rsi,r9
  2c:	49 0f af e9          	imul   rbp,r9

Show nanoBench command
Results:
- Instructions retired: 12.0
- Core cycles: 134.02
- Reference cycles: 134.01
- UOPS_RETIRED.ANY: 72.0
- UOPS_MS: 71.98

With loop_count=1000 and unroll_count=1

Code:

   0:	4d 0f af c1          	imul   r8,r9
   4:	4d 0f af d1          	imul   r10,r9
   8:	4d 0f af d9          	imul   r11,r9
   c:	4d 0f af e1          	imul   r12,r9
  10:	4d 0f af e9          	imul   r13,r9
  14:	4d 0f af f1          	imul   r14,r9
  18:	49 0f af d9          	imul   rbx,r9
  1c:	49 0f af c9          	imul   rcx,r9
  20:	49 0f af d1          	imul   rdx,r9
  24:	49 0f af f9          	imul   rdi,r9
  28:	49 0f af f1          	imul   rsi,r9
  2c:	49 0f af e9          	imul   rbp,r9

Show nanoBench command
Results:
- Instructions retired: 14.0
- Core cycles: 135.62
- Reference cycles: 135.62
- UOPS_RETIRED.ANY: 74.0
- UOPS_MS: 72.02

With loop_count=100 and unroll_count=10

Code:

   0:	4d 0f af c1          	imul   r8,r9
   4:	4d 0f af d1          	imul   r10,r9
   8:	4d 0f af d9          	imul   r11,r9
   c:	4d 0f af e1          	imul   r12,r9
  10:	4d 0f af e9          	imul   r13,r9
  14:	4d 0f af f1          	imul   r14,r9
  18:	49 0f af d9          	imul   rbx,r9
  1c:	49 0f af c9          	imul   rcx,r9
  20:	49 0f af d1          	imul   rdx,r9
  24:	49 0f af f9          	imul   rdi,r9
  28:	49 0f af f1          	imul   rsi,r9
  2c:	49 0f af e9          	imul   rbp,r9

Show nanoBench command
Results:
- Instructions retired: 12.2
- Core cycles: 132.68
- Reference cycles: 132.68
- UOPS_RETIRED.ANY: 72.2
- UOPS_MS: 72.02

With the same register for for different operands

With 1 independent instruction

With unroll_count=500 and no inner loop

Code:

   0:	4d 0f af c0          	imul   r8,r8

Show nanoBench command
Results:
- Instructions retired: 1.0
- Core cycles: 14.15
- Reference cycles: 14.14
- UOPS_RETIRED.ANY: 6.0
- UOPS_MS: 6.0

With loop_count=1000 and unroll_count=10

Code:

   0:	4d 0f af c0          	imul   r8,r8

Show nanoBench command
Results:
- Instructions retired: 1.2
- Core cycles: 14.17
- Reference cycles: 14.17
- UOPS_RETIRED.ANY: 6.2
- UOPS_MS: 6.0

With loop_count=100 and unroll_count=100

Code:

   0:	4d 0f af c0          	imul   r8,r8

Show nanoBench command
Results:
- Instructions retired: 1.02
- Core cycles: 14.01
- Reference cycles: 14.01
- UOPS_RETIRED.ANY: 6.02
- UOPS_MS: 6.0

With 4 independent instructions

With unroll_count=200 and no inner loop

Code:

   0:	4d 0f af c0          	imul   r8,r8
   4:	4d 0f af c9          	imul   r9,r9
   8:	4d 0f af d2          	imul   r10,r10
   c:	4d 0f af db          	imul   r11,r11

Show nanoBench command
Results:
- Instructions retired: 4.0
- Core cycles: 45.58
- Reference cycles: 45.61
- UOPS_RETIRED.ANY: 24.0
- UOPS_MS: 23.99

With loop_count=1000 and unroll_count=2

Code:

   0:	4d 0f af c0          	imul   r8,r8
   4:	4d 0f af c9          	imul   r9,r9
   8:	4d 0f af d2          	imul   r10,r10
   c:	4d 0f af db          	imul   r11,r11

Show nanoBench command
Results:
- Instructions retired: 5.0
- Core cycles: 44.6
- Reference cycles: 44.6
- UOPS_RETIRED.ANY: 25.0
- UOPS_MS: 24.01

With loop_count=100 and unroll_count=20

Code:

   0:	4d 0f af c0          	imul   r8,r8
   4:	4d 0f af c9          	imul   r9,r9
   8:	4d 0f af d2          	imul   r10,r10
   c:	4d 0f af db          	imul   r11,r11

Show nanoBench command
Results:
- Instructions retired: 4.1
- Core cycles: 44.14
- Reference cycles: 44.15
- UOPS_RETIRED.ANY: 24.1
- UOPS_MS: 24.01

With 8 independent instructions

With unroll_count=100 and no inner loop

Code:

   0:	4d 0f af c0          	imul   r8,r8
   4:	4d 0f af c9          	imul   r9,r9
   8:	4d 0f af d2          	imul   r10,r10
   c:	4d 0f af db          	imul   r11,r11
  10:	4d 0f af e4          	imul   r12,r12
  14:	4d 0f af ed          	imul   r13,r13
  18:	4d 0f af f6          	imul   r14,r14
  1c:	48 0f af db          	imul   rbx,rbx

Show nanoBench command
Results:
- Instructions retired: 8.0
- Core cycles: 88.18
- Reference cycles: 88.14
- UOPS_RETIRED.ANY: 48.0
- UOPS_MS: 47.98

With loop_count=1000 and unroll_count=1

Code:

   0:	4d 0f af c0          	imul   r8,r8
   4:	4d 0f af c9          	imul   r9,r9
   8:	4d 0f af d2          	imul   r10,r10
   c:	4d 0f af db          	imul   r11,r11
  10:	4d 0f af e4          	imul   r12,r12
  14:	4d 0f af ed          	imul   r13,r13
  18:	4d 0f af f6          	imul   r14,r14
  1c:	48 0f af db          	imul   rbx,rbx

Show nanoBench command
Results:
- Instructions retired: 10.0
- Core cycles: 89.16
- Reference cycles: 89.16
- UOPS_RETIRED.ANY: 50.0
- UOPS_MS: 48.02

With loop_count=100 and unroll_count=10

Code:

   0:	4d 0f af c0          	imul   r8,r8
   4:	4d 0f af c9          	imul   r9,r9
   8:	4d 0f af d2          	imul   r10,r10
   c:	4d 0f af db          	imul   r11,r11
  10:	4d 0f af e4          	imul   r12,r12
  14:	4d 0f af ed          	imul   r13,r13
  18:	4d 0f af f6          	imul   r14,r14
  1c:	48 0f af db          	imul   rbx,rbx

Show nanoBench command
Results:
- Instructions retired: 8.2
- Core cycles: 90.49
- Reference cycles: 90.49
- UOPS_RETIRED.ANY: 48.2
- UOPS_MS: 48.02

With 13 independent instructions

With unroll_count=100 and no inner loop

Code:

   0:	4d 0f af c0          	imul   r8,r8
   4:	4d 0f af c9          	imul   r9,r9
   8:	4d 0f af d2          	imul   r10,r10
   c:	4d 0f af db          	imul   r11,r11
  10:	4d 0f af e4          	imul   r12,r12
  14:	4d 0f af ed          	imul   r13,r13
  18:	4d 0f af f6          	imul   r14,r14
  1c:	48 0f af db          	imul   rbx,rbx
  20:	48 0f af c9          	imul   rcx,rcx
  24:	48 0f af d2          	imul   rdx,rdx
  28:	48 0f af ff          	imul   rdi,rdi
  2c:	48 0f af f6          	imul   rsi,rsi
  30:	48 0f af ed          	imul   rbp,rbp

Show nanoBench command
Results:
- Instructions retired: 13.0
- Core cycles: 143.25
- Reference cycles: 143.24
- UOPS_RETIRED.ANY: 78.0
- UOPS_MS: 77.98

With loop_count=1000 and unroll_count=1

Code:

   0:	4d 0f af c0          	imul   r8,r8
   4:	4d 0f af c9          	imul   r9,r9
   8:	4d 0f af d2          	imul   r10,r10
   c:	4d 0f af db          	imul   r11,r11
  10:	4d 0f af e4          	imul   r12,r12
  14:	4d 0f af ed          	imul   r13,r13
  18:	4d 0f af f6          	imul   r14,r14
  1c:	48 0f af db          	imul   rbx,rbx
  20:	48 0f af c9          	imul   rcx,rcx
  24:	48 0f af d2          	imul   rdx,rdx
  28:	48 0f af ff          	imul   rdi,rdi
  2c:	48 0f af f6          	imul   rsi,rsi
  30:	48 0f af ed          	imul   rbp,rbp

Show nanoBench command
Results:
- Instructions retired: 15.0
- Core cycles: 144.25
- Reference cycles: 144.24
- UOPS_RETIRED.ANY: 80.0
- UOPS_MS: 78.05

With loop_count=100 and unroll_count=10

Code:

   0:	4d 0f af c0          	imul   r8,r8
   4:	4d 0f af c9          	imul   r9,r9
   8:	4d 0f af d2          	imul   r10,r10
   c:	4d 0f af db          	imul   r11,r11
  10:	4d 0f af e4          	imul   r12,r12
  14:	4d 0f af ed          	imul   r13,r13
  18:	4d 0f af f6          	imul   r14,r14
  1c:	48 0f af db          	imul   rbx,rbx
  20:	48 0f af c9          	imul   rcx,rcx
  24:	48 0f af d2          	imul   rdx,rdx
  28:	48 0f af ff          	imul   rdi,rdi
  2c:	48 0f af f6          	imul   rsi,rsi
  30:	48 0f af ed          	imul   rbp,rbp

Show nanoBench command
Results:
- Instructions retired: 13.2
- Core cycles: 143.34
- Reference cycles: 143.33
- UOPS_RETIRED.ANY: 78.2
- UOPS_MS: 78.02

IMUL (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