LEA_B_IS (R64) - Latency

Operands

Operand 1 (w): Register (RAX, RCX, RDX, RBX, RSP, RBP, RSI, RDI, R8, R9, R10, R11, R12, R13, R14, R15)
Operand 2 (r):

Latency operand 2 → 1 (address, base register): 2

Latency operand 2 → 1 (address, index register): 2

Latency operand 2 → 1 (address, base register): 2

Experiment 1

Instruction: LEA R8, [R14+2*R13]
Chain instructions: MOVSX R8, R8D;XOR R14, R8;XOR R14, R8;XOR R14, R8;XOR R14, R8
Chain latency: 5

Code:

   0:	4f 8d 04 6e          	lea    r8,[r14+r13*2]
   4:	4d 63 c0             	movsxd r8,r8d
   7:	4d 31 c6             	xor    r14,r8
   a:	4d 31 c6             	xor    r14,r8
   d:	4d 31 c6             	xor    r14,r8
  10:	4d 31 c6             	xor    r14,r8

Show nanoBench command
Results:
- Instructions retired: 6.0
- Core cycles: 7.0
- Reference cycles: 4.0
- UOPS_EXECUTED.THREAD: 6.0

Latency operand 2 → 1 (address, index register): 2

Experiment 1

Instruction: LEA R8, [R14+2*R13]
Chain instructions: MOVSX R8, R8D;XOR R13, R8;XOR R13, R8;XOR R13, R8;XOR R13, R8
Chain latency: 5

Code:

   0:	4f 8d 04 6e          	lea    r8,[r14+r13*2]
   4:	4d 63 c0             	movsxd r8,r8d
   7:	4d 31 c5             	xor    r13,r8
   a:	4d 31 c5             	xor    r13,r8
   d:	4d 31 c5             	xor    r13,r8
  10:	4d 31 c5             	xor    r13,r8

Show nanoBench command
Results:
- Instructions retired: 6.0
- Core cycles: 7.0
- Reference cycles: 4.0
- UOPS_EXECUTED.THREAD: 6.0