ADD (EAX, I32) - Latency

Experiment 1

• Instruction: ADD EAX, 16777216
• Code:

     0:	05 00 00 00 01       	add    eax,0x1000000
  

• Show nanoBench command
• Results:
  • Instructions retired: 1.0
  • Core cycles: 1.0
  • Reference cycles: 1.0
  • RS_UOPS_DISPATCHED: 1.0

Experiment 2

• Instruction: ADD EAX, 16777216
• Chain instructions: MOVSX RAX, EAX;MOVSX RAX, EAX;MOVSX RAX, EAX;MOVSX RAX, EAX;MOVSX RAX, EAX
• Chain latency: 5
• Code:

     0:	05 00 00 00 01       	add    eax,0x1000000
     5:	48 63 c0             	movsxd rax,eax
     8:	48 63 c0             	movsxd rax,eax
     b:	48 63 c0             	movsxd rax,eax
     e:	48 63 c0             	movsxd rax,eax
    11:	48 63 c0             	movsxd rax,eax
  

• Show nanoBench command
• Results:
  • Instructions retired: 6.0
  • Core cycles: 5.99
  • Reference cycles: 5.96
  • RS_UOPS_DISPATCHED: 6.0

Experiment 1

• Instruction: ADD EAX, 16777216
• Chain instructions: CMOVC R15D, R15D;MOVSX RAX, R15D;MOVSX RAX, EAX;MOVSX RAX, EAX;MOVSX RAX, EAX;MOVSX RAX, EAX
• Chain latency: 7
• Code:

     0:	05 00 00 00 01       	add    eax,0x1000000
     5:	45 0f 42 ff          	cmovb  r15d,r15d
     9:	49 63 c7             	movsxd rax,r15d
     c:	48 63 c0             	movsxd rax,eax
     f:	48 63 c0             	movsxd rax,eax
    12:	48 63 c0             	movsxd rax,eax
    15:	48 63 c0             	movsxd rax,eax
  

• Show nanoBench command
• Results:
  • Instructions retired: 7.0
  • Core cycles: 8.0
  • Reference cycles: 7.97
  • RS_UOPS_DISPATCHED: 8.0

Experiment 2

• Instruction: ADD EAX, 16777216
• Chain instructions: CMOVP R15D, R15D;MOVSX RAX, R15D;MOVSX RAX, EAX;MOVSX RAX, EAX;MOVSX RAX, EAX;MOVSX RAX, EAX
• Chain latency: 7
• Code:

     0:	05 00 00 00 01       	add    eax,0x1000000
     5:	45 0f 4a ff          	cmovp  r15d,r15d
     9:	49 63 c7             	movsxd rax,r15d
     c:	48 63 c0             	movsxd rax,eax
     f:	48 63 c0             	movsxd rax,eax
    12:	48 63 c0             	movsxd rax,eax
    15:	48 63 c0             	movsxd rax,eax
  

• Show nanoBench command
• Results:
  • Instructions retired: 7.0
  • Core cycles: 8.0
  • Reference cycles: 7.96
  • RS_UOPS_DISPATCHED: 8.0

Experiment 3

• Instruction: ADD EAX, 16777216
• Chain instructions: CMOVS R15D, R15D;MOVSX RAX, R15D;MOVSX RAX, EAX;MOVSX RAX, EAX;MOVSX RAX, EAX;MOVSX RAX, EAX
• Chain latency: 7
• Code:

     0:	05 00 00 00 01       	add    eax,0x1000000
     5:	45 0f 48 ff          	cmovs  r15d,r15d
     9:	49 63 c7             	movsxd rax,r15d
     c:	48 63 c0             	movsxd rax,eax
     f:	48 63 c0             	movsxd rax,eax
    12:	48 63 c0             	movsxd rax,eax
    15:	48 63 c0             	movsxd rax,eax
  

• Show nanoBench command
• Results:
  • Instructions retired: 7.0
  • Core cycles: 8.0
  • Reference cycles: 8.0
  • RS_UOPS_DISPATCHED: 8.0

Experiment 4

• Instruction: ADD EAX, 16777216
• Chain instructions: CMOVZ R15D, R15D;MOVSX RAX, R15D;MOVSX RAX, EAX;MOVSX RAX, EAX;MOVSX RAX, EAX;MOVSX RAX, EAX
• Chain latency: 7
• Code:

     0:	05 00 00 00 01       	add    eax,0x1000000
     5:	45 0f 44 ff          	cmove  r15d,r15d
     9:	49 63 c7             	movsxd rax,r15d
     c:	48 63 c0             	movsxd rax,eax
     f:	48 63 c0             	movsxd rax,eax
    12:	48 63 c0             	movsxd rax,eax
    15:	48 63 c0             	movsxd rax,eax
  

• Show nanoBench command
• Results:
  • Instructions retired: 7.0
  • Core cycles: 8.0
  • Reference cycles: 7.99
  • RS_UOPS_DISPATCHED: 8.0

Experiment 5

• Instruction: ADD EAX, 16777216
• Chain instructions: CMOVO R15D, R15D;MOVSX RAX, R15D;MOVSX RAX, EAX;MOVSX RAX, EAX;MOVSX RAX, EAX;MOVSX RAX, EAX
• Chain latency: 7
• Code:

     0:	05 00 00 00 01       	add    eax,0x1000000
     5:	45 0f 40 ff          	cmovo  r15d,r15d
     9:	49 63 c7             	movsxd rax,r15d
     c:	48 63 c0             	movsxd rax,eax
     f:	48 63 c0             	movsxd rax,eax
    12:	48 63 c0             	movsxd rax,eax
    15:	48 63 c0             	movsxd rax,eax
  

• Show nanoBench command
• Results:
  • Instructions retired: 7.0
  • Core cycles: 8.0
  • Reference cycles: 7.96
  • RS_UOPS_DISPATCHED: 8.0