BEXTR (R32, R32, R32)

Experiment 1

Instruction: BEXTR R9D, R8D, R10D
Chain instructions: MOVSX R8, R9D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D
Chain latency: 5

Code:

   0:	c4 42 28 f7 c8       	bextr  r9d,r8d,r10d
   5:	4d 63 c1             	movsxd r8,r9d
   8:	4d 63 c0             	movsxd r8,r8d
   b:	4d 63 c0             	movsxd r8,r8d
   e:	4d 63 c0             	movsxd r8,r8d
  11:	4d 63 c0             	movsxd r8,r8d

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL

Show nanoBench command
Results:
- Instructions retired: 6.0
- Core cycles: 11.0
- Reference cycles: 8.32
- UOPS_EXECUTED.THREAD: 7.0

Latency operand 2 → 4: 6

Experiment 1

Instruction: BEXTR R9D, R8D, R10D
Chain instructions: CMOVZ R15D, R15D;MOVSX R8, R15D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D
Chain latency: 6

Code:

   0:	c4 42 28 f7 c8       	bextr  r9d,r8d,r10d
   5:	45 0f 44 ff          	cmove  r15d,r15d
   9:	4d 63 c7             	movsxd r8,r15d
   c:	4d 63 c0             	movsxd r8,r8d
   f:	4d 63 c0             	movsxd r8,r8d
  12:	4d 63 c0             	movsxd r8,r8d
  15:	4d 63 c0             	movsxd r8,r8d

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL

Show nanoBench command
Results:
- Instructions retired: 7.0
- Core cycles: 12.01
- Reference cycles: 9.6
- UOPS_EXECUTED.THREAD: 8.03

Latency operand 3 → 1: 4

Experiment 1

Instruction: BEXTR R9D, R10D, R8D
Chain instructions: MOVSX R8, R9D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D
Chain latency: 5

Code:

   0:	c4 42 38 f7 ca       	bextr  r9d,r10d,r8d
   5:	4d 63 c1             	movsxd r8,r9d
   8:	4d 63 c0             	movsxd r8,r8d
   b:	4d 63 c0             	movsxd r8,r8d
   e:	4d 63 c0             	movsxd r8,r8d
  11:	4d 63 c0             	movsxd r8,r8d

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL

Show nanoBench command
Results:
- Instructions retired: 6.0
- Core cycles: 9.02
- Reference cycles: 6.72
- UOPS_EXECUTED.THREAD: 7.02

Latency operand 3 → 4: 4

Experiment 1

Instruction: BEXTR R9D, R10D, R8D
Chain instructions: CMOVZ R15D, R15D;MOVSX R8, R15D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D
Chain latency: 6

Code:

   0:	c4 42 38 f7 ca       	bextr  r9d,r10d,r8d
   5:	45 0f 44 ff          	cmove  r15d,r15d
   9:	4d 63 c7             	movsxd r8,r15d
   c:	4d 63 c0             	movsxd r8,r8d
   f:	4d 63 c0             	movsxd r8,r8d
  12:	4d 63 c0             	movsxd r8,r8d
  15:	4d 63 c0             	movsxd r8,r8d

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL

Show nanoBench command
Results:
- Instructions retired: 7.0
- Core cycles: 10.0
- Reference cycles: 7.36
- UOPS_EXECUTED.THREAD: 8.0

BEXTR (R32, R32, R32) - Latency

Operands

Latency operand 2 → 1: 6

Latency operand 2 → 4: 6

Latency operand 3 → 1: 4

Latency operand 3 → 4: 4

Latency operand 2 → 1: 6

Experiment 1

Latency operand 2 → 4: 6

Experiment 1

Latency operand 3 → 1: 4

Experiment 1

Latency operand 3 → 4: 4

Experiment 1