DIV (R16)

Experiment 1 (fast division)

Instruction: DIV BX
Chain instructions: AND BX, AX; AND BX, CX; OR BX, CX; OR BX, BX; OR BX, BX; OR BX, BX; OR BX, BX; OR BX, BX; OR BX, BX; OR BX, BX; OR BX, BX; ; MOV AX, R8W;MOV DX, R9W
Chain latency: 11

Code:

   0:	66 f7 f3             	div    bx
   3:	66 21 c3             	and    bx,ax
   6:	66 21 cb             	and    bx,cx
   9:	66 09 cb             	or     bx,cx
   c:	66 09 db             	or     bx,bx
   f:	66 09 db             	or     bx,bx
  12:	66 09 db             	or     bx,bx
  15:	66 09 db             	or     bx,bx
  18:	66 09 db             	or     bx,bx
  1b:	66 09 db             	or     bx,bx
  1e:	66 09 db             	or     bx,bx
  21:	66 09 db             	or     bx,bx
  24:	66 44 89 c0          	mov    ax,r8w
  28:	66 44 89 ca          	mov    dx,r9w

Init:

MOV R8, 0;
MOV R9, 0;
MOV RCX, 1;
MOV BX, CX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 14.0
- Core cycles: 23.5
- Reference cycles: 18.72
- UOPS_RETIRED.ALL: 17.0

Experiment 2 (slow division)

Instruction: DIV BX
Chain instructions: AND BX, AX; AND BX, CX; OR BX, CX; OR BX, BX; OR BX, BX; OR BX, BX; OR BX, BX; OR BX, BX; OR BX, BX; OR BX, BX; OR BX, BX; ; MOV AX, R8W;MOV DX, R9W
Chain latency: 11

Code:

   0:	66 f7 f3             	div    bx
   3:	66 21 c3             	and    bx,ax
   6:	66 21 cb             	and    bx,cx
   9:	66 09 cb             	or     bx,cx
   c:	66 09 db             	or     bx,bx
   f:	66 09 db             	or     bx,bx
  12:	66 09 db             	or     bx,bx
  15:	66 09 db             	or     bx,bx
  18:	66 09 db             	or     bx,bx
  1b:	66 09 db             	or     bx,bx
  1e:	66 09 db             	or     bx,bx
  21:	66 09 db             	or     bx,bx
  24:	66 44 89 c0          	mov    ax,r8w
  28:	66 44 89 ca          	mov    dx,r9w

Init:

MOV R8, 133;
MOV R9, 0x343a;
MOV RCX, 0x75e6;
MOV BX, CX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 14.0
- Core cycles: 27.48
- Reference cycles: 21.84
- UOPS_RETIRED.ALL: 17.0

Latency operand 1 → 3: 13 ≤ lat ≤ 17

Experiment 1 (fast division)

Instruction: DIV BX
Chain instructions: AND BX, DX; AND BX, CX; OR BX, CX; OR BX, BX; OR BX, BX; OR BX, BX; OR BX, BX; OR BX, BX; OR BX, BX; OR BX, BX; OR BX, BX; ; MOV AX, R8W;MOV DX, R9W
Chain latency: 11

Code:

   0:	66 f7 f3             	div    bx
   3:	66 21 d3             	and    bx,dx
   6:	66 21 cb             	and    bx,cx
   9:	66 09 cb             	or     bx,cx
   c:	66 09 db             	or     bx,bx
   f:	66 09 db             	or     bx,bx
  12:	66 09 db             	or     bx,bx
  15:	66 09 db             	or     bx,bx
  18:	66 09 db             	or     bx,bx
  1b:	66 09 db             	or     bx,bx
  1e:	66 09 db             	or     bx,bx
  21:	66 09 db             	or     bx,bx
  24:	66 44 89 c0          	mov    ax,r8w
  28:	66 44 89 ca          	mov    dx,r9w

Init:

MOV R8, 0;
MOV R9, 0;
MOV RCX, 1;
MOV BX, CX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 14.0
- Core cycles: 24.0
- Reference cycles: 18.98
- UOPS_RETIRED.ALL: 17.0

Experiment 2 (slow division)

Instruction: DIV BX
Chain instructions: AND BX, DX; AND BX, CX; OR BX, CX; OR BX, BX; OR BX, BX; OR BX, BX; OR BX, BX; OR BX, BX; OR BX, BX; OR BX, BX; OR BX, BX; ; MOV AX, R8W;MOV DX, R9W
Chain latency: 11

Code:

   0:	66 f7 f3             	div    bx
   3:	66 21 d3             	and    bx,dx
   6:	66 21 cb             	and    bx,cx
   9:	66 09 cb             	or     bx,cx
   c:	66 09 db             	or     bx,bx
   f:	66 09 db             	or     bx,bx
  12:	66 09 db             	or     bx,bx
  15:	66 09 db             	or     bx,bx
  18:	66 09 db             	or     bx,bx
  1b:	66 09 db             	or     bx,bx
  1e:	66 09 db             	or     bx,bx
  21:	66 09 db             	or     bx,bx
  24:	66 44 89 c0          	mov    ax,r8w
  28:	66 44 89 ca          	mov    dx,r9w

Init:

MOV R8, 133;
MOV R9, 0x343a;
MOV RCX, 0x75e6;
MOV BX, CX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 14.0
- Core cycles: 27.98
- Reference cycles: 21.84
- UOPS_RETIRED.ALL: 17.0

Latency operand 2 → 2: 11 ≤ lat ≤ 15

Experiment 1 (fast division)

Instruction: DIV BX
Chain instructions: AND AX, R8W; OR AX, R8W; OR AX, AX; OR AX, AX; OR AX, AX; OR AX, AX; OR AX, AX; OR AX, AX; OR AX, AX; OR AX, AX; ; MOV DX, R9W
Chain latency: 10

Code:

   0:	66 f7 f3             	div    bx
   3:	66 44 21 c0          	and    ax,r8w
   7:	66 44 09 c0          	or     ax,r8w
   b:	66 09 c0             	or     ax,ax
   e:	66 09 c0             	or     ax,ax
  11:	66 09 c0             	or     ax,ax
  14:	66 09 c0             	or     ax,ax
  17:	66 09 c0             	or     ax,ax
  1a:	66 09 c0             	or     ax,ax
  1d:	66 09 c0             	or     ax,ax
  20:	66 09 c0             	or     ax,ax
  23:	66 44 89 ca          	mov    dx,r9w

Init:

MOV R8, 0;
MOV R9, 0;
MOV RCX, 1;
MOV BX, CX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 12.0
- Core cycles: 21.19
- Reference cycles: 17.16
- UOPS_RETIRED.ALL: 15.0

Experiment 2 (slow division)

Instruction: DIV BX
Chain instructions: AND AX, R8W; OR AX, R8W; OR AX, AX; OR AX, AX; OR AX, AX; OR AX, AX; OR AX, AX; OR AX, AX; OR AX, AX; OR AX, AX; ; MOV DX, R9W
Chain latency: 10

Code:

   0:	66 f7 f3             	div    bx
   3:	66 44 21 c0          	and    ax,r8w
   7:	66 44 09 c0          	or     ax,r8w
   b:	66 09 c0             	or     ax,ax
   e:	66 09 c0             	or     ax,ax
  11:	66 09 c0             	or     ax,ax
  14:	66 09 c0             	or     ax,ax
  17:	66 09 c0             	or     ax,ax
  1a:	66 09 c0             	or     ax,ax
  1d:	66 09 c0             	or     ax,ax
  20:	66 09 c0             	or     ax,ax
  23:	66 44 89 ca          	mov    dx,r9w

Init:

MOV R8, 133;
MOV R9, 0x343a;
MOV RCX, 0x75e6;
MOV BX, CX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 12.0
- Core cycles: 25.12
- Reference cycles: 19.76
- UOPS_RETIRED.ALL: 15.0

Latency operand 2 → 3: 12 ≤ lat ≤ 16

Experiment 1 (fast division)

Instruction: DIV BX
Chain instructions: AND AX, DX; AND AX, R8W; OR AX, R8W; OR AX, AX; OR AX, AX; OR AX, AX; OR AX, AX; OR AX, AX; OR AX, AX; OR AX, AX; OR AX, AX; ; MOV DX, R9W
Chain latency: 11

Code:

   0:	66 f7 f3             	div    bx
   3:	66 21 d0             	and    ax,dx
   6:	66 44 21 c0          	and    ax,r8w
   a:	66 44 09 c0          	or     ax,r8w
   e:	66 09 c0             	or     ax,ax
  11:	66 09 c0             	or     ax,ax
  14:	66 09 c0             	or     ax,ax
  17:	66 09 c0             	or     ax,ax
  1a:	66 09 c0             	or     ax,ax
  1d:	66 09 c0             	or     ax,ax
  20:	66 09 c0             	or     ax,ax
  23:	66 09 c0             	or     ax,ax
  26:	66 44 89 ca          	mov    dx,r9w

Init:

MOV R8, 0;
MOV R9, 0;
MOV RCX, 1;
MOV BX, CX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 13.0
- Core cycles: 23.0
- Reference cycles: 18.2
- UOPS_RETIRED.ALL: 16.0

Experiment 2 (slow division)

Instruction: DIV BX
Chain instructions: AND AX, DX; AND AX, R8W; OR AX, R8W; OR AX, AX; OR AX, AX; OR AX, AX; OR AX, AX; OR AX, AX; OR AX, AX; OR AX, AX; OR AX, AX; ; MOV DX, R9W
Chain latency: 11

Code:

   0:	66 f7 f3             	div    bx
   3:	66 21 d0             	and    ax,dx
   6:	66 44 21 c0          	and    ax,r8w
   a:	66 44 09 c0          	or     ax,r8w
   e:	66 09 c0             	or     ax,ax
  11:	66 09 c0             	or     ax,ax
  14:	66 09 c0             	or     ax,ax
  17:	66 09 c0             	or     ax,ax
  1a:	66 09 c0             	or     ax,ax
  1d:	66 09 c0             	or     ax,ax
  20:	66 09 c0             	or     ax,ax
  23:	66 09 c0             	or     ax,ax
  26:	66 44 89 ca          	mov    dx,r9w

Init:

MOV R8, 133;
MOV R9, 0x343a;
MOV RCX, 0x75e6;
MOV BX, CX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 13.0
- Core cycles: 27.0
- Reference cycles: 21.32
- UOPS_RETIRED.ALL: 16.0

Latency operand 3 → 2: 11 ≤ lat ≤ 15

Experiment 1 (fast division)

Instruction: DIV BX
Chain instructions: AND DX, AX; AND DX, R9W; OR DX, R9W; OR DX, DX; OR DX, DX; OR DX, DX; OR DX, DX; OR DX, DX; OR DX, DX; OR DX, DX; OR DX, DX; ; MOV AX, R8W
Chain latency: 11

Code:

   0:	66 f7 f3             	div    bx
   3:	66 21 c2             	and    dx,ax
   6:	66 44 21 ca          	and    dx,r9w
   a:	66 44 09 ca          	or     dx,r9w
   e:	66 09 d2             	or     dx,dx
  11:	66 09 d2             	or     dx,dx
  14:	66 09 d2             	or     dx,dx
  17:	66 09 d2             	or     dx,dx
  1a:	66 09 d2             	or     dx,dx
  1d:	66 09 d2             	or     dx,dx
  20:	66 09 d2             	or     dx,dx
  23:	66 09 d2             	or     dx,dx
  26:	66 44 89 c0          	mov    ax,r8w

Init:

MOV R8, 0;
MOV R9, 0;
MOV RCX, 1;
MOV BX, CX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 13.0
- Core cycles: 21.97
- Reference cycles: 17.42
- UOPS_RETIRED.ALL: 16.0

Experiment 2 (slow division)

Instruction: DIV BX
Chain instructions: AND DX, AX; AND DX, R9W; OR DX, R9W; OR DX, DX; OR DX, DX; OR DX, DX; OR DX, DX; OR DX, DX; OR DX, DX; OR DX, DX; OR DX, DX; ; MOV AX, R8W
Chain latency: 11

Code:

   0:	66 f7 f3             	div    bx
   3:	66 21 c2             	and    dx,ax
   6:	66 44 21 ca          	and    dx,r9w
   a:	66 44 09 ca          	or     dx,r9w
   e:	66 09 d2             	or     dx,dx
  11:	66 09 d2             	or     dx,dx
  14:	66 09 d2             	or     dx,dx
  17:	66 09 d2             	or     dx,dx
  1a:	66 09 d2             	or     dx,dx
  1d:	66 09 d2             	or     dx,dx
  20:	66 09 d2             	or     dx,dx
  23:	66 09 d2             	or     dx,dx
  26:	66 44 89 c0          	mov    ax,r8w

Init:

MOV R8, 133;
MOV R9, 0x343a;
MOV RCX, 0x75e6;
MOV BX, CX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 13.0
- Core cycles: 25.97
- Reference cycles: 20.54
- UOPS_RETIRED.ALL: 16.0

Latency operand 3 → 3: 11 ≤ lat ≤ 15

Experiment 1 (fast division)

Instruction: DIV BX
Chain instructions: AND DX, R9W; OR DX, R9W; OR DX, DX; OR DX, DX; OR DX, DX; OR DX, DX; OR DX, DX; OR DX, DX; OR DX, DX; OR DX, DX; ; MOV AX, R8W
Chain latency: 10

Code:

   0:	66 f7 f3             	div    bx
   3:	66 44 21 ca          	and    dx,r9w
   7:	66 44 09 ca          	or     dx,r9w
   b:	66 09 d2             	or     dx,dx
   e:	66 09 d2             	or     dx,dx
  11:	66 09 d2             	or     dx,dx
  14:	66 09 d2             	or     dx,dx
  17:	66 09 d2             	or     dx,dx
  1a:	66 09 d2             	or     dx,dx
  1d:	66 09 d2             	or     dx,dx
  20:	66 09 d2             	or     dx,dx
  23:	66 44 89 c0          	mov    ax,r8w

Init:

MOV R8, 0;
MOV R9, 0;
MOV RCX, 1;
MOV BX, CX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 12.0
- Core cycles: 21.0
- Reference cycles: 16.77
- UOPS_RETIRED.ALL: 15.0

Experiment 2 (slow division)

Instruction: DIV BX
Chain instructions: AND DX, R9W; OR DX, R9W; OR DX, DX; OR DX, DX; OR DX, DX; OR DX, DX; OR DX, DX; OR DX, DX; OR DX, DX; OR DX, DX; ; MOV AX, R8W
Chain latency: 10

Code:

   0:	66 f7 f3             	div    bx
   3:	66 44 21 ca          	and    dx,r9w
   7:	66 44 09 ca          	or     dx,r9w
   b:	66 09 d2             	or     dx,dx
   e:	66 09 d2             	or     dx,dx
  11:	66 09 d2             	or     dx,dx
  14:	66 09 d2             	or     dx,dx
  17:	66 09 d2             	or     dx,dx
  1a:	66 09 d2             	or     dx,dx
  1d:	66 09 d2             	or     dx,dx
  20:	66 09 d2             	or     dx,dx
  23:	66 44 89 c0          	mov    ax,r8w

Init:

MOV R8, 133;
MOV R9, 0x343a;
MOV RCX, 0x75e6;
MOV BX, CX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 12.0
- Core cycles: 25.0
- Reference cycles: 19.76
- UOPS_RETIRED.ALL: 15.0

DIV (R16) - Latency

Operands

Latency operand 1 → 2: 12 ≤ lat ≤ 16

Latency operand 1 → 3: 13 ≤ lat ≤ 17

Latency operand 2 → 2: 11 ≤ lat ≤ 15

Latency operand 2 → 3: 12 ≤ lat ≤ 16

Latency operand 3 → 2: 11 ≤ lat ≤ 15

Latency operand 3 → 3: 11 ≤ lat ≤ 15

Latency operand 1 → 2: 12 ≤ lat ≤ 16

Experiment 1 (fast division)

Experiment 2 (slow division)

Latency operand 1 → 3: 13 ≤ lat ≤ 17

Experiment 1 (fast division)

Experiment 2 (slow division)

Latency operand 2 → 2: 11 ≤ lat ≤ 15

Experiment 1 (fast division)

Experiment 2 (slow division)

Latency operand 2 → 3: 12 ≤ lat ≤ 16

Experiment 1 (fast division)

Experiment 2 (slow division)

Latency operand 3 → 2: 11 ≤ lat ≤ 15

Experiment 1 (fast division)

Experiment 2 (slow division)

Latency operand 3 → 3: 11 ≤ lat ≤ 15

Experiment 1 (fast division)

Experiment 2 (slow division)