BZHI (R32, R32, R32)

Experiment 1

Instruction: BZHI 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 f5 c8       	bzhi   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: 6.0
- Reference cycles: 6.03
- UOPS_EXECUTED.CORE: 6.0

Latency operand 2 → 4: 1

Experiment 1

Instruction: BZHI R9D, R8D, R10D
Chain instructions: CMOVS R15D, R15D;MOVSX R8, R15D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D
Chain latency: 7

Code:

   0:	c4 42 28 f5 c8       	bzhi   r9d,r8d,r10d
   5:	45 0f 48 ff          	cmovs  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: 8.0
- Reference cycles: 8.11
- UOPS_EXECUTED.CORE: 8.0

Experiment 2

Instruction: BZHI R9D, R8D, R10D
Chain instructions: CMOVC R15D, R15D;MOVSX R8, R15D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D
Chain latency: 7

Code:

   0:	c4 42 28 f5 c8       	bzhi   r9d,r8d,r10d
   5:	45 0f 42 ff          	cmovb  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: 8.0
- Reference cycles: 8.05
- UOPS_EXECUTED.CORE: 8.0

Experiment 3

Instruction: BZHI 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: 7

Code:

   0:	c4 42 28 f5 c8       	bzhi   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: 8.0
- Reference cycles: 7.95
- UOPS_EXECUTED.CORE: 8.0

Experiment 4

Instruction: BZHI R9D, R8D, R10D
Chain instructions: CMOVO R15D, R15D;MOVSX R8, R15D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D
Chain latency: 7

Code:

   0:	c4 42 28 f5 c8       	bzhi   r9d,r8d,r10d
   5:	45 0f 40 ff          	cmovo  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: 8.0
- Reference cycles: 8.05
- UOPS_EXECUTED.CORE: 8.0

Latency operand 3 → 1: 1

Experiment 1

Instruction: BZHI 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 f5 ca       	bzhi   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: 6.0
- Reference cycles: 6.08
- UOPS_EXECUTED.CORE: 6.0

Latency operand 3 → 4: 1

Experiment 1

Instruction: BZHI R9D, R10D, R8D
Chain instructions: CMOVS R15D, R15D;MOVSX R8, R15D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D
Chain latency: 7

Code:

   0:	c4 42 38 f5 ca       	bzhi   r9d,r10d,r8d
   5:	45 0f 48 ff          	cmovs  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: 8.0
- Reference cycles: 8.05
- UOPS_EXECUTED.CORE: 8.0

Experiment 2

Instruction: BZHI R9D, R10D, R8D
Chain instructions: CMOVC R15D, R15D;MOVSX R8, R15D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D
Chain latency: 7

Code:

   0:	c4 42 38 f5 ca       	bzhi   r9d,r10d,r8d
   5:	45 0f 42 ff          	cmovb  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: 8.0
- Reference cycles: 8.05
- UOPS_EXECUTED.CORE: 8.0

Experiment 3

Instruction: BZHI 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: 7

Code:

   0:	c4 42 38 f5 ca       	bzhi   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: 8.0
- Reference cycles: 7.95
- UOPS_EXECUTED.CORE: 8.0

Experiment 4

Instruction: BZHI R9D, R10D, R8D
Chain instructions: CMOVO R15D, R15D;MOVSX R8, R15D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D
Chain latency: 7

Code:

   0:	c4 42 38 f5 ca       	bzhi   r9d,r10d,r8d
   5:	45 0f 40 ff          	cmovo  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: 8.0
- Reference cycles: 8.0
- UOPS_EXECUTED.CORE: 8.0

BZHI (R32, R32, R32) - Latency

Operands

Latency operand 2 → 1: 1

Latency operand 2 → 4: 1

Latency operand 3 → 1: 1

Latency operand 3 → 4: 1

Latency operand 2 → 1: 1

Experiment 1

Latency operand 2 → 4: 1

Experiment 1

Experiment 2

Experiment 3

Experiment 4

Latency operand 3 → 1: 1

Experiment 1

Latency operand 3 → 4: 1

Experiment 1

Experiment 2

Experiment 3

Experiment 4