IMUL (R32, R32)

With unroll_count=500 and no inner loop

Code:

   0:	45 0f af c1          	imul   r8d,r9d

Show nanoBench command
Results:
- MPERF: 2.53
- APERF: 3.0
- UOPS: 1.0
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- DIV_CYCLES: 0.0

With loop_count=1000 and unroll_count=10

Code:

   0:	45 0f af c1          	imul   r8d,r9d

Show nanoBench command
Results:
- MPERF: 2.53
- APERF: 3.0
- UOPS: 1.2
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- DIV_CYCLES: 0.0

With loop_count=100 and unroll_count=100

Code:

   0:	45 0f af c1          	imul   r8d,r9d

Show nanoBench command
Results:
- MPERF: 2.53
- APERF: 3.0
- UOPS: 1.02
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- DIV_CYCLES: 0.0

With 4 independent instructions

With unroll_count=200 and no inner loop

Code:

   0:	45 0f af c1          	imul   r8d,r9d
   4:	45 0f af d1          	imul   r10d,r9d
   8:	45 0f af d9          	imul   r11d,r9d
   c:	45 0f af e1          	imul   r12d,r9d

Show nanoBench command
Results:
- MPERF: 3.42
- APERF: 4.0
- UOPS: 4.0
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- DIV_CYCLES: 0.0

With loop_count=1000 and unroll_count=2

Code:

   0:	45 0f af c1          	imul   r8d,r9d
   4:	45 0f af d1          	imul   r10d,r9d
   8:	45 0f af d9          	imul   r11d,r9d
   c:	45 0f af e1          	imul   r12d,r9d

Show nanoBench command
Results:
- MPERF: 3.38
- APERF: 4.0
- UOPS: 5.0
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- DIV_CYCLES: 0.0

With loop_count=100 and unroll_count=20

Code:

   0:	45 0f af c1          	imul   r8d,r9d
   4:	45 0f af d1          	imul   r10d,r9d
   8:	45 0f af d9          	imul   r11d,r9d
   c:	45 0f af e1          	imul   r12d,r9d

Show nanoBench command
Results:
- MPERF: 3.37
- APERF: 4.0
- UOPS: 4.1
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- DIV_CYCLES: 0.0

With 8 independent instructions

With unroll_count=100 and no inner loop

Code:

   0:	45 0f af c1          	imul   r8d,r9d
   4:	45 0f af d1          	imul   r10d,r9d
   8:	45 0f af d9          	imul   r11d,r9d
   c:	45 0f af e1          	imul   r12d,r9d
  10:	45 0f af e9          	imul   r13d,r9d
  14:	45 0f af f1          	imul   r14d,r9d
  18:	41 0f af d9          	imul   ebx,r9d
  1c:	41 0f af c9          	imul   ecx,r9d

Show nanoBench command
Results:
- MPERF: 6.66
- APERF: 8.0
- UOPS: 8.0
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- DIV_CYCLES: 0.0

With loop_count=1000 and unroll_count=1

Code:

   0:	45 0f af c1          	imul   r8d,r9d
   4:	45 0f af d1          	imul   r10d,r9d
   8:	45 0f af d9          	imul   r11d,r9d
   c:	45 0f af e1          	imul   r12d,r9d
  10:	45 0f af e9          	imul   r13d,r9d
  14:	45 0f af f1          	imul   r14d,r9d
  18:	41 0f af d9          	imul   ebx,r9d
  1c:	41 0f af c9          	imul   ecx,r9d

Show nanoBench command
Results:
- MPERF: 6.75
- APERF: 8.01
- UOPS: 10.0
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- DIV_CYCLES: 0.0

With loop_count=100 and unroll_count=10

Code:

   0:	45 0f af c1          	imul   r8d,r9d
   4:	45 0f af d1          	imul   r10d,r9d
   8:	45 0f af d9          	imul   r11d,r9d
   c:	45 0f af e1          	imul   r12d,r9d
  10:	45 0f af e9          	imul   r13d,r9d
  14:	45 0f af f1          	imul   r14d,r9d
  18:	41 0f af d9          	imul   ebx,r9d
  1c:	41 0f af c9          	imul   ecx,r9d

Show nanoBench command
Results:
- MPERF: 6.74
- APERF: 8.01
- UOPS: 8.2
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- DIV_CYCLES: 0.0

With 13 independent instructions

With unroll_count=100 and no inner loop

Code:

   0:	45 0f af c1          	imul   r8d,r9d
   4:	45 0f af d1          	imul   r10d,r9d
   8:	45 0f af d9          	imul   r11d,r9d
   c:	45 0f af e1          	imul   r12d,r9d
  10:	45 0f af e9          	imul   r13d,r9d
  14:	45 0f af f1          	imul   r14d,r9d
  18:	41 0f af d9          	imul   ebx,r9d
  1c:	41 0f af c9          	imul   ecx,r9d
  20:	41 0f af d1          	imul   edx,r9d
  24:	41 0f af c1          	imul   eax,r9d
  28:	41 0f af f9          	imul   edi,r9d
  2c:	41 0f af f1          	imul   esi,r9d
  30:	41 0f af e9          	imul   ebp,r9d

Show nanoBench command
Results:
- MPERF: 10.86
- APERF: 13.0
- UOPS: 13.0
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- DIV_CYCLES: 0.0

With loop_count=1000 and unroll_count=1

Code:

   0:	45 0f af c1          	imul   r8d,r9d
   4:	45 0f af d1          	imul   r10d,r9d
   8:	45 0f af d9          	imul   r11d,r9d
   c:	45 0f af e1          	imul   r12d,r9d
  10:	45 0f af e9          	imul   r13d,r9d
  14:	45 0f af f1          	imul   r14d,r9d
  18:	41 0f af d9          	imul   ebx,r9d
  1c:	41 0f af c9          	imul   ecx,r9d
  20:	41 0f af d1          	imul   edx,r9d
  24:	41 0f af c1          	imul   eax,r9d
  28:	41 0f af f9          	imul   edi,r9d
  2c:	41 0f af f1          	imul   esi,r9d
  30:	41 0f af e9          	imul   ebp,r9d

Show nanoBench command
Results:
- MPERF: 10.97
- APERF: 13.01
- UOPS: 15.0
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- DIV_CYCLES: 0.0

With loop_count=100 and unroll_count=10

Code:

   0:	45 0f af c1          	imul   r8d,r9d
   4:	45 0f af d1          	imul   r10d,r9d
   8:	45 0f af d9          	imul   r11d,r9d
   c:	45 0f af e1          	imul   r12d,r9d
  10:	45 0f af e9          	imul   r13d,r9d
  14:	45 0f af f1          	imul   r14d,r9d
  18:	41 0f af d9          	imul   ebx,r9d
  1c:	41 0f af c9          	imul   ecx,r9d
  20:	41 0f af d1          	imul   edx,r9d
  24:	41 0f af c1          	imul   eax,r9d
  28:	41 0f af f9          	imul   edi,r9d
  2c:	41 0f af f1          	imul   esi,r9d
  30:	41 0f af e9          	imul   ebp,r9d

Show nanoBench command
Results:
- MPERF: 10.96
- APERF: 13.01
- UOPS: 13.2
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- DIV_CYCLES: 0.0

With the same register for for different operands

With 1 independent instruction

With unroll_count=500 and no inner loop

Code:

   0:	45 0f af c0          	imul   r8d,r8d

Show nanoBench command
Results:
- MPERF: 2.54
- APERF: 3.0
- UOPS: 1.0
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- DIV_CYCLES: 0.0

With loop_count=1000 and unroll_count=10

Code:

   0:	45 0f af c0          	imul   r8d,r8d

Show nanoBench command
Results:
- MPERF: 2.51
- APERF: 3.0
- UOPS: 1.2
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- DIV_CYCLES: 0.0

With loop_count=100 and unroll_count=100

Code:

   0:	45 0f af c0          	imul   r8d,r8d

Show nanoBench command
Results:
- MPERF: 2.53
- APERF: 3.0
- UOPS: 1.02
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- DIV_CYCLES: 0.0

With 4 independent instructions

With unroll_count=200 and no inner loop

Code:

   0:	45 0f af c0          	imul   r8d,r8d
   4:	45 0f af c9          	imul   r9d,r9d
   8:	45 0f af d2          	imul   r10d,r10d
   c:	45 0f af db          	imul   r11d,r11d

Show nanoBench command
Results:
- MPERF: 3.42
- APERF: 4.0
- UOPS: 4.0
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- DIV_CYCLES: 0.0

With loop_count=1000 and unroll_count=2

Code:

   0:	45 0f af c0          	imul   r8d,r8d
   4:	45 0f af c9          	imul   r9d,r9d
   8:	45 0f af d2          	imul   r10d,r10d
   c:	45 0f af db          	imul   r11d,r11d

Show nanoBench command
Results:
- MPERF: 3.35
- APERF: 4.0
- UOPS: 5.0
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- DIV_CYCLES: 0.0

With loop_count=100 and unroll_count=20

Code:

   0:	45 0f af c0          	imul   r8d,r8d
   4:	45 0f af c9          	imul   r9d,r9d
   8:	45 0f af d2          	imul   r10d,r10d
   c:	45 0f af db          	imul   r11d,r11d

Show nanoBench command
Results:
- MPERF: 3.37
- APERF: 4.0
- UOPS: 4.1
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- DIV_CYCLES: 0.0

With 8 independent instructions

With unroll_count=100 and no inner loop

Code:

   0:	45 0f af c0          	imul   r8d,r8d
   4:	45 0f af c9          	imul   r9d,r9d
   8:	45 0f af d2          	imul   r10d,r10d
   c:	45 0f af db          	imul   r11d,r11d
  10:	45 0f af e4          	imul   r12d,r12d
  14:	45 0f af ed          	imul   r13d,r13d
  18:	45 0f af f6          	imul   r14d,r14d
  1c:	0f af db             	imul   ebx,ebx

Show nanoBench command
Results:
- MPERF: 6.84
- APERF: 8.0
- UOPS: 8.0
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- DIV_CYCLES: 0.0

With loop_count=1000 and unroll_count=1

Code:

   0:	45 0f af c0          	imul   r8d,r8d
   4:	45 0f af c9          	imul   r9d,r9d
   8:	45 0f af d2          	imul   r10d,r10d
   c:	45 0f af db          	imul   r11d,r11d
  10:	45 0f af e4          	imul   r12d,r12d
  14:	45 0f af ed          	imul   r13d,r13d
  18:	45 0f af f6          	imul   r14d,r14d
  1c:	0f af db             	imul   ebx,ebx

Show nanoBench command
Results:
- MPERF: 6.76
- APERF: 8.01
- UOPS: 10.0
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- DIV_CYCLES: 0.0

With loop_count=100 and unroll_count=10

Code:

   0:	45 0f af c0          	imul   r8d,r8d
   4:	45 0f af c9          	imul   r9d,r9d
   8:	45 0f af d2          	imul   r10d,r10d
   c:	45 0f af db          	imul   r11d,r11d
  10:	45 0f af e4          	imul   r12d,r12d
  14:	45 0f af ed          	imul   r13d,r13d
  18:	45 0f af f6          	imul   r14d,r14d
  1c:	0f af db             	imul   ebx,ebx

Show nanoBench command
Results:
- MPERF: 6.74
- APERF: 8.01
- UOPS: 8.2
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- DIV_CYCLES: 0.0

With 14 independent instructions

With unroll_count=100 and no inner loop

Code:

   0:	45 0f af c0          	imul   r8d,r8d
   4:	45 0f af c9          	imul   r9d,r9d
   8:	45 0f af d2          	imul   r10d,r10d
   c:	45 0f af db          	imul   r11d,r11d
  10:	45 0f af e4          	imul   r12d,r12d
  14:	45 0f af ed          	imul   r13d,r13d
  18:	45 0f af f6          	imul   r14d,r14d
  1c:	0f af db             	imul   ebx,ebx
  1f:	0f af c9             	imul   ecx,ecx
  22:	0f af d2             	imul   edx,edx
  25:	0f af c0             	imul   eax,eax
  28:	0f af ff             	imul   edi,edi
  2b:	0f af f6             	imul   esi,esi
  2e:	0f af ed             	imul   ebp,ebp

Show nanoBench command
Results:
- MPERF: 11.52
- APERF: 14.0
- UOPS: 14.0
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- DIV_CYCLES: 0.0

With loop_count=1000 and unroll_count=1

Code:

   0:	45 0f af c0          	imul   r8d,r8d
   4:	45 0f af c9          	imul   r9d,r9d
   8:	45 0f af d2          	imul   r10d,r10d
   c:	45 0f af db          	imul   r11d,r11d
  10:	45 0f af e4          	imul   r12d,r12d
  14:	45 0f af ed          	imul   r13d,r13d
  18:	45 0f af f6          	imul   r14d,r14d
  1c:	0f af db             	imul   ebx,ebx
  1f:	0f af c9             	imul   ecx,ecx
  22:	0f af d2             	imul   edx,edx
  25:	0f af c0             	imul   eax,eax
  28:	0f af ff             	imul   edi,edi
  2b:	0f af f6             	imul   esi,esi
  2e:	0f af ed             	imul   ebp,ebp

Show nanoBench command
Results:
- MPERF: 11.81
- APERF: 14.01
- UOPS: 16.0
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- DIV_CYCLES: 0.0

With loop_count=100 and unroll_count=10

Code:

   0:	45 0f af c0          	imul   r8d,r8d
   4:	45 0f af c9          	imul   r9d,r9d
   8:	45 0f af d2          	imul   r10d,r10d
   c:	45 0f af db          	imul   r11d,r11d
  10:	45 0f af e4          	imul   r12d,r12d
  14:	45 0f af ed          	imul   r13d,r13d
  18:	45 0f af f6          	imul   r14d,r14d
  1c:	0f af db             	imul   ebx,ebx
  1f:	0f af c9             	imul   ecx,ecx
  22:	0f af d2             	imul   edx,edx
  25:	0f af c0             	imul   eax,eax
  28:	0f af ff             	imul   edi,edi
  2b:	0f af f6             	imul   esi,esi
  2e:	0f af ed             	imul   ebp,ebp

Show nanoBench command
Results:
- MPERF: 11.79
- APERF: 14.01
- UOPS: 14.2
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- DIV_CYCLES: 0.0

IMUL (R32, R32) - 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 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

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 14 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