RCL (R64, CL) - Latency

Experiment 1 (with CL=0)

• Instruction: RCL R8, CL
• Chain instructions: MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D
• Chain latency: 7
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	4d 63 c0             	movsxd r8,r8d
     6:	4d 63 c0             	movsxd r8,r8d
     9:	4d 63 c0             	movsxd r8,r8d
     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 CL, 0

• Show nanoBench command
• Results:
  • MPERF: 7.68
  • APERF: 9.32
  • UOPS: 16.0

Experiment 2 (with CL=1)

• Instruction: RCL R8, CL
• Chain instructions: MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D
• Chain latency: 7
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	4d 63 c0             	movsxd r8,r8d
     6:	4d 63 c0             	movsxd r8,r8d
     9:	4d 63 c0             	movsxd r8,r8d
     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 CL, 1

• Show nanoBench command
• Results:
  • MPERF: 7.92
  • APERF: 9.32
  • UOPS: 16.0

Experiment 3 (with CL=2)

• Instruction: RCL R8, CL
• Chain instructions: MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D
• Chain latency: 7
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	4d 63 c0             	movsxd r8,r8d
     6:	4d 63 c0             	movsxd r8,r8d
     9:	4d 63 c0             	movsxd r8,r8d
     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 CL, 2

• Show nanoBench command
• Results:
  • MPERF: 7.92
  • APERF: 9.32
  • UOPS: 16.0

Experiment 4 (with CL=0)

• Instruction: RCL R8, CL
• Code:

     0:	49 d3 d0             	rcl    r8,cl
  

• Init:

  MOV CL, 0

• Show nanoBench command
• Results:
  • MPERF: 3.54
  • APERF: 4.0
  • UOPS: 9.0

Experiment 5 (with CL=0, with dependency-breaking instructions)

• Instruction: RCL R8, CL
• Chain instruction: TEST R15, R15
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	4d 85 ff             	test   r15,r15
  

• Init:

  MOV CL, 0

• Show nanoBench command
• Results:
  • MPERF: 3.24
  • APERF: 3.98
  • UOPS: 10.0

Experiment 6 (with CL=1)

• Instruction: RCL R8, CL
• Code:

     0:	49 d3 d0             	rcl    r8,cl
  

• Init:

  MOV CL, 1

• Show nanoBench command
• Results:
  • MPERF: 3.6
  • APERF: 4.0
  • UOPS: 9.0

Experiment 7 (with CL=1, with dependency-breaking instructions)

• Instruction: RCL R8, CL
• Chain instruction: TEST R15, R15
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	4d 85 ff             	test   r15,r15
  

• Init:

  MOV CL, 1

• Show nanoBench command
• Results:
  • MPERF: 3.6
  • APERF: 3.98
  • UOPS: 10.0

Experiment 8 (with CL=2)

• Instruction: RCL R8, CL
• Code:

     0:	49 d3 d0             	rcl    r8,cl
  

• Init:

  MOV CL, 2

• Show nanoBench command
• Results:
  • MPERF: 3.24
  • APERF: 4.0
  • UOPS: 9.0

Experiment 9 (with CL=2, with dependency-breaking instructions)

• Instruction: RCL R8, CL
• Chain instruction: TEST R15, R15
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	4d 85 ff             	test   r15,r15
  

• Init:

  MOV CL, 2

• Show nanoBench command
• Results:
  • MPERF: 3.24
  • APERF: 3.98
  • UOPS: 10.0

Experiment 1 (with CL=0)

• Instruction: RCL R8, CL
• Chain instructions: CMOVC R15, R15;MOVSX R8, R15D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D
• Chain latency: 8
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	4d 0f 42 ff          	cmovb  r15,r15
     7:	4d 63 c7             	movsxd r8,r15d
     a:	4d 63 c0             	movsxd r8,r8d
     d:	4d 63 c0             	movsxd r8,r8d
    10:	4d 63 c0             	movsxd r8,r8d
    13:	4d 63 c0             	movsxd r8,r8d
    16:	4d 63 c0             	movsxd r8,r8d
    19:	4d 63 c0             	movsxd r8,r8d
  

• Init:

  MOV CL, 0

• Show nanoBench command
• Results:
  • MPERF: 8.64
  • APERF: 10.29
  • UOPS: 17.0

Experiment 2 (with CL=1)

• Instruction: RCL R8, CL
• Chain instructions: CMOVC R15, R15;MOVSX R8, R15D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D
• Chain latency: 8
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	4d 0f 42 ff          	cmovb  r15,r15
     7:	4d 63 c7             	movsxd r8,r15d
     a:	4d 63 c0             	movsxd r8,r8d
     d:	4d 63 c0             	movsxd r8,r8d
    10:	4d 63 c0             	movsxd r8,r8d
    13:	4d 63 c0             	movsxd r8,r8d
    16:	4d 63 c0             	movsxd r8,r8d
    19:	4d 63 c0             	movsxd r8,r8d
  

• Init:

  MOV CL, 1

• Show nanoBench command
• Results:
  • MPERF: 8.64
  • APERF: 10.29
  • UOPS: 17.0

Experiment 3 (with CL=2)

• Instruction: RCL R8, CL
• Chain instructions: CMOVC R15, R15;MOVSX R8, R15D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D
• Chain latency: 8
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	4d 0f 42 ff          	cmovb  r15,r15
     7:	4d 63 c7             	movsxd r8,r15d
     a:	4d 63 c0             	movsxd r8,r8d
     d:	4d 63 c0             	movsxd r8,r8d
    10:	4d 63 c0             	movsxd r8,r8d
    13:	4d 63 c0             	movsxd r8,r8d
    16:	4d 63 c0             	movsxd r8,r8d
    19:	4d 63 c0             	movsxd r8,r8d
  

• Init:

  MOV CL, 2

• Show nanoBench command
• Results:
  • MPERF: 8.64
  • APERF: 10.29
  • UOPS: 17.0

Experiment 1

• Instruction: RCL R8, CL
• Chain instructions: MOVSX RCX, R8D;MOVSX RCX, ECX;MOVSX RCX, ECX;MOVSX RCX, ECX;MOVSX RCX, ECX;MOVSX RCX, ECX;MOVSX RCX, ECX
• Chain latency: 7
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	49 63 c8             	movsxd rcx,r8d
     6:	48 63 c9             	movsxd rcx,ecx
     9:	48 63 c9             	movsxd rcx,ecx
     c:	48 63 c9             	movsxd rcx,ecx
     f:	48 63 c9             	movsxd rcx,ecx
    12:	48 63 c9             	movsxd rcx,ecx
    15:	48 63 c9             	movsxd rcx,ecx
  

• Show nanoBench command
• Results:
  • MPERF: 9.0
  • APERF: 10.75
  • UOPS: 16.0

Experiment 1

• Instruction: RCL R8, CL
• Chain instructions: SETC CL;MOVSX RCX, CL;MOVSX RCX, CL;MOVSX RCX, CL;MOVSX RCX, CL;MOVSX RCX, CL;MOVSX RCX, CL
• Chain latency: 7
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	0f 92 c1             	setb   cl
     6:	48 0f be c9          	movsx  rcx,cl
     a:	48 0f be c9          	movsx  rcx,cl
     e:	48 0f be c9          	movsx  rcx,cl
    12:	48 0f be c9          	movsx  rcx,cl
    16:	48 0f be c9          	movsx  rcx,cl
    1a:	48 0f be c9          	movsx  rcx,cl
  

• Show nanoBench command
• Results:
  • MPERF: 9.18
  • APERF: 10.75
  • UOPS: 16.0

Experiment 1 (with CL=0)

• Instruction: RCL R8, CL
• Chain instructions: MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;TEST R8, R8
• Chain latency: 7
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	4d 63 c0             	movsxd r8,r8d
     6:	4d 63 c0             	movsxd r8,r8d
     9:	4d 63 c0             	movsxd r8,r8d
     c:	4d 63 c0             	movsxd r8,r8d
     f:	4d 63 c0             	movsxd r8,r8d
    12:	4d 63 c0             	movsxd r8,r8d
    15:	4d 85 c0             	test   r8,r8
  

• Init:

  MOV CL, 0

• Show nanoBench command
• Results:
  • MPERF: 7.74
  • APERF: 9.32
  • UOPS: 16.0

Experiment 2 (with CL=1)

• Instruction: RCL R8, CL
• Chain instructions: MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;TEST R8, R8
• Chain latency: 7
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	4d 63 c0             	movsxd r8,r8d
     6:	4d 63 c0             	movsxd r8,r8d
     9:	4d 63 c0             	movsxd r8,r8d
     c:	4d 63 c0             	movsxd r8,r8d
     f:	4d 63 c0             	movsxd r8,r8d
    12:	4d 63 c0             	movsxd r8,r8d
    15:	4d 85 c0             	test   r8,r8
  

• Init:

  MOV CL, 1

• Show nanoBench command
• Results:
  • MPERF: 7.92
  • APERF: 9.32
  • UOPS: 16.0

Experiment 3 (with CL=2)

• Instruction: RCL R8, CL
• Chain instructions: MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;MOVSX R8, R8D;TEST R8, R8
• Chain latency: 7
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	4d 63 c0             	movsxd r8,r8d
     6:	4d 63 c0             	movsxd r8,r8d
     9:	4d 63 c0             	movsxd r8,r8d
     c:	4d 63 c0             	movsxd r8,r8d
     f:	4d 63 c0             	movsxd r8,r8d
    12:	4d 63 c0             	movsxd r8,r8d
    15:	4d 85 c0             	test   r8,r8
  

• Init:

  MOV CL, 2

• Show nanoBench command
• Results:
  • MPERF: 7.92
  • APERF: 9.32
  • UOPS: 16.0

Experiment 4 (with CL=0)

• Instruction: RCL R8, CL
• Chain instruction: TEST R8, R8
• Chain latency: 1
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	4d 85 c0             	test   r8,r8
  

• Init:

  MOV CL, 0

• Show nanoBench command
• Results:
  • MPERF: 3.54
  • APERF: 3.99
  • UOPS: 10.0

Experiment 5 (with CL=0, with dependency-breaking instructions)

• Instruction: RCL R8, CL
• Chain instructions: TEST R8, R8;;MOV R8, 0
• Chain latency: 1
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	4d 85 c0             	test   r8,r8
     6:	49 c7 c0 00 00 00 00 	mov    r8,0x0
  

• Init:

  MOV CL, 0

• Show nanoBench command
• Results:
  • MPERF: 3.48
  • APERF: 3.99
  • UOPS: 11.0

Experiment 6 (with CL=1)

• Instruction: RCL R8, CL
• Chain instruction: TEST R8, R8
• Chain latency: 1
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	4d 85 c0             	test   r8,r8
  

• Init:

  MOV CL, 1

• Show nanoBench command
• Results:
  • MPERF: 3.18
  • APERF: 3.99
  • UOPS: 10.0

Experiment 7 (with CL=1, with dependency-breaking instructions)

• Instruction: RCL R8, CL
• Chain instructions: TEST R8, R8;;MOV R8, 0
• Chain latency: 1
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	4d 85 c0             	test   r8,r8
     6:	49 c7 c0 00 00 00 00 	mov    r8,0x0
  

• Init:

  MOV CL, 1

• Show nanoBench command
• Results:
  • MPERF: 3.6
  • APERF: 3.99
  • UOPS: 11.0

Experiment 8 (with CL=2)

• Instruction: RCL R8, CL
• Chain instruction: TEST R8, R8
• Chain latency: 1
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	4d 85 c0             	test   r8,r8
  

• Init:

  MOV CL, 2

• Show nanoBench command
• Results:
  • MPERF: 3.48
  • APERF: 3.99
  • UOPS: 10.0

Experiment 9 (with CL=2, with dependency-breaking instructions)

• Instruction: RCL R8, CL
• Chain instructions: TEST R8, R8;;MOV R8, 0
• Chain latency: 1
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	4d 85 c0             	test   r8,r8
     6:	49 c7 c0 00 00 00 00 	mov    r8,0x0
  

• Init:

  MOV CL, 2

• Show nanoBench command
• Results:
  • MPERF: 3.36
  • APERF: 3.99
  • UOPS: 11.0

Experiment 1 (with CL=0)

• Instruction: RCL R8, CL
• Chain instructions: CMC;CMC;CMC;CMC;CMC;CMC
• Chain latency: 6
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	f5                   	cmc    
     4:	f5                   	cmc    
     5:	f5                   	cmc    
     6:	f5                   	cmc    
     7:	f5                   	cmc    
     8:	f5                   	cmc    
  

• Init:

  MOV CL, 0

• Show nanoBench command
• Results:
  • MPERF: 7.2
  • APERF: 8.57
  • UOPS: 15.0

Experiment 2 (with CL=1)

• Instruction: RCL R8, CL
• Chain instructions: CMC;CMC;CMC;CMC;CMC;CMC
• Chain latency: 6
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	f5                   	cmc    
     4:	f5                   	cmc    
     5:	f5                   	cmc    
     6:	f5                   	cmc    
     7:	f5                   	cmc    
     8:	f5                   	cmc    
  

• Init:

  MOV CL, 1

• Show nanoBench command
• Results:
  • MPERF: 7.2
  • APERF: 8.57
  • UOPS: 15.0

Experiment 3 (with CL=2)

• Instruction: RCL R8, CL
• Chain instructions: CMC;CMC;CMC;CMC;CMC;CMC
• Chain latency: 6
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	f5                   	cmc    
     4:	f5                   	cmc    
     5:	f5                   	cmc    
     6:	f5                   	cmc    
     7:	f5                   	cmc    
     8:	f5                   	cmc    
  

• Init:

  MOV CL, 2

• Show nanoBench command
• Results:
  • MPERF: 7.26
  • APERF: 8.57
  • UOPS: 15.0

Experiment 4 (with CL=0)

• Instruction: RCL R8, CL
• Code:

     0:	49 d3 d0             	rcl    r8,cl
  

• Init:

  MOV CL, 0

• Show nanoBench command
• Results:
  • MPERF: 3.36
  • APERF: 4.0
  • UOPS: 9.0

Experiment 5 (with CL=0, with dependency-breaking instructions)

• Instruction: RCL R8, CL
• Chain instruction: MOV R8, 0
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	49 c7 c0 00 00 00 00 	mov    r8,0x0
  

• Init:

  MOV CL, 0

• Show nanoBench command
• Results:
  • MPERF: 3.48
  • APERF: 3.98
  • UOPS: 10.0

Experiment 6 (with CL=1)

• Instruction: RCL R8, CL
• Code:

     0:	49 d3 d0             	rcl    r8,cl
  

• Init:

  MOV CL, 1

• Show nanoBench command
• Results:
  • MPERF: 3.3
  • APERF: 4.0
  • UOPS: 9.0

Experiment 7 (with CL=1, with dependency-breaking instructions)

• Instruction: RCL R8, CL
• Chain instruction: MOV R8, 0
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	49 c7 c0 00 00 00 00 	mov    r8,0x0
  

• Init:

  MOV CL, 1

• Show nanoBench command
• Results:
  • MPERF: 3.24
  • APERF: 3.98
  • UOPS: 10.0

Experiment 8 (with CL=2)

• Instruction: RCL R8, CL
• Code:

     0:	49 d3 d0             	rcl    r8,cl
  

• Init:

  MOV CL, 2

• Show nanoBench command
• Results:
  • MPERF: 3.36
  • APERF: 4.0
  • UOPS: 9.0

Experiment 9 (with CL=2, with dependency-breaking instructions)

• Instruction: RCL R8, CL
• Chain instruction: MOV R8, 0
• Code:

     0:	49 d3 d0             	rcl    r8,cl
     3:	49 c7 c0 00 00 00 00 	mov    r8,0x0
  

• Init:

  MOV CL, 2

• Show nanoBench command
• Results:
  • MPERF: 3.24
  • APERF: 3.98
  • UOPS: 10.0