RCR (R32, I8) - Throughput and Uops

With unroll_count=500 and no inner loop

• Code:

     0:	41 c1 d8 02          	rcr    r8d,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 1.0
  • Core cycles: 6.0
  • Reference cycles: 4.51
  • UOPS_EXECUTED.THREAD: 7.0
  • RETIRE_SLOTS: 7.0
  • UOPS_MITE: 2.0
  • UOPS_MS: 5.0
  • UOPS_PORT_0: 1.1
  • UOPS_PORT_1: 2.06
  • UOPS_PORT_6: 2.04
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 1.81
  • UOPS_PORT_5B>=2: 0.0
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 1.0

With unroll_count=500, no inner loop, and 1 NOP

• Code:

     0:	41 c1 d8 02          	rcr    r8d,0x2
     4:	90                   	nop
  

• Show nanoBench command
• Results:
  • Instructions retired: 2.0
  • Core cycles: 6.0
  • Reference cycles: 4.48
  • UOPS_EXECUTED.THREAD: 7.0
  • RETIRE_SLOTS: 8.0
  • UOPS_MITE: 2.98
  • UOPS_MS: 5.0
  • UOPS_PORT_0: 1.06
  • UOPS_PORT_1: 2.0
  • UOPS_PORT_6: 1.94
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 2.0
  • UOPS_PORT_5B>=2: 0.0
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 2.0

With loop_count=1000 and unroll_count=10

• Code:

     0:	41 c1 d8 02          	rcr    r8d,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 1.2
  • Core cycles: 6.0
  • Reference cycles: 4.52
  • UOPS_EXECUTED.THREAD: 7.1
  • RETIRE_SLOTS: 7.1
  • UOPS_MITE: 2.1
  • UOPS_MS: 5.01
  • UOPS_PORT_0: 1.11
  • UOPS_PORT_1: 2.05
  • UOPS_PORT_6: 2.13
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 1.8
  • UOPS_PORT_5B>=2: 0.0
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 1.1

With loop_count=100 and unroll_count=100

• Code:

     0:	41 c1 d8 02          	rcr    r8d,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 1.02
  • Core cycles: 6.0
  • Reference cycles: 4.52
  • UOPS_EXECUTED.THREAD: 7.01
  • RETIRE_SLOTS: 7.01
  • UOPS_MITE: 2.01
  • UOPS_MS: 5.0
  • UOPS_PORT_0: 1.1
  • UOPS_PORT_1: 2.05
  • UOPS_PORT_6: 2.05
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 1.81
  • UOPS_PORT_5B>=2: 0.0
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 1.01

With additional dependency-breaking instructions

With unroll_count=500 and no inner loop

• Code:

     0:	4d 85 ff             	test   r15,r15
     3:	41 c1 d8 02          	rcr    r8d,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 2.0
  • Core cycles: 5.87
  • Reference cycles: 4.42
  • UOPS_EXECUTED.THREAD: 8.0
  • RETIRE_SLOTS: 8.0
  • UOPS_MITE: 2.99
  • UOPS_MS: 5.02
  • UOPS_PORT_0: 1.45
  • UOPS_PORT_1: 2.01
  • UOPS_PORT_6: 1.99
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 2.55
  • UOPS_PORT_5B>=2: 0.56
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 1.99

With loop_count=1000 and unroll_count=10

• Code:

     0:	4d 85 ff             	test   r15,r15
     3:	41 c1 d8 02          	rcr    r8d,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 2.2
  • Core cycles: 6.0
  • Reference cycles: 4.51
  • UOPS_EXECUTED.THREAD: 8.1
  • RETIRE_SLOTS: 8.1
  • UOPS_MITE: 3.1
  • UOPS_MS: 5.0
  • UOPS_PORT_0: 1.51
  • UOPS_PORT_1: 2.0
  • UOPS_PORT_6: 2.09
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 2.5
  • UOPS_PORT_5B>=2: 0.5
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 2.0

With loop_count=100 and unroll_count=100

• Code:

     0:	4d 85 ff             	test   r15,r15
     3:	41 c1 d8 02          	rcr    r8d,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 2.02
  • Core cycles: 5.99
  • Reference cycles: 4.51
  • UOPS_EXECUTED.THREAD: 8.01
  • RETIRE_SLOTS: 8.01
  • UOPS_MITE: 3.01
  • UOPS_MS: 5.0
  • UOPS_PORT_0: 1.5
  • UOPS_PORT_1: 2.0
  • UOPS_PORT_6: 2.01
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 2.5
  • UOPS_PORT_5B>=2: 0.5
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 2.0

With unroll_count=200 and no inner loop

• Code:

     0:	41 c1 d8 02          	rcr    r8d,0x2
     4:	41 c1 d9 02          	rcr    r9d,0x2
     8:	41 c1 da 02          	rcr    r10d,0x2
     c:	41 c1 db 02          	rcr    r11d,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 4.0
  • Core cycles: 24.03
  • Reference cycles: 18.16
  • UOPS_EXECUTED.THREAD: 28.01
  • RETIRE_SLOTS: 28.0
  • UOPS_MITE: 7.97
  • UOPS_MS: 20.02
  • UOPS_PORT_0: 4.34
  • UOPS_PORT_1: 8.13
  • UOPS_PORT_6: 8.05
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 7.48
  • UOPS_PORT_5B>=2: 0.0
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 3.99

With loop_count=1000 and unroll_count=2

• Code:

     0:	41 c1 d8 02          	rcr    r8d,0x2
     4:	41 c1 d9 02          	rcr    r9d,0x2
     8:	41 c1 da 02          	rcr    r10d,0x2
     c:	41 c1 db 02          	rcr    r11d,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 5.0
  • Core cycles: 24.0
  • Reference cycles: 18.06
  • UOPS_EXECUTED.THREAD: 28.5
  • RETIRE_SLOTS: 28.5
  • UOPS_MITE: 8.52
  • UOPS_MS: 20.04
  • UOPS_PORT_0: 4.33
  • UOPS_PORT_1: 8.12
  • UOPS_PORT_6: 8.53
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 7.48
  • UOPS_PORT_5B>=2: 0.0
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 4.51

With loop_count=100 and unroll_count=20

• Code:

     0:	41 c1 d8 02          	rcr    r8d,0x2
     4:	41 c1 d9 02          	rcr    r9d,0x2
     8:	41 c1 da 02          	rcr    r10d,0x2
     c:	41 c1 db 02          	rcr    r11d,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 4.1
  • Core cycles: 24.0
  • Reference cycles: 18.06
  • UOPS_EXECUTED.THREAD: 28.05
  • RETIRE_SLOTS: 28.05
  • UOPS_MITE: 8.05
  • UOPS_MS: 20.0
  • UOPS_PORT_0: 4.33
  • UOPS_PORT_1: 8.13
  • UOPS_PORT_6: 8.11
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 7.48
  • UOPS_PORT_5B>=2: 0.0
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 4.05

With additional dependency-breaking instructions

With unroll_count=200 and no inner loop

• Code:

     0:	4d 85 ff             	test   r15,r15
     3:	41 c1 d8 02          	rcr    r8d,0x2
     7:	4d 85 ff             	test   r15,r15
     a:	41 c1 d9 02          	rcr    r9d,0x2
     e:	4d 85 ff             	test   r15,r15
    11:	41 c1 da 02          	rcr    r10d,0x2
    15:	4d 85 ff             	test   r15,r15
    18:	41 c1 db 02          	rcr    r11d,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 8.0
  • Core cycles: 23.64
  • Reference cycles: 17.76
  • UOPS_EXECUTED.THREAD: 32.0
  • RETIRE_SLOTS: 32.01
  • UOPS_MITE: 11.97
  • UOPS_MS: 20.06
  • UOPS_PORT_0: 5.98
  • UOPS_PORT_1: 8.02
  • UOPS_PORT_6: 8.0
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 10.01
  • UOPS_PORT_5B>=2: 0.06
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 7.97

With loop_count=1000 and unroll_count=2

• Code:

     0:	4d 85 ff             	test   r15,r15
     3:	41 c1 d8 02          	rcr    r8d,0x2
     7:	4d 85 ff             	test   r15,r15
     a:	41 c1 d9 02          	rcr    r9d,0x2
     e:	4d 85 ff             	test   r15,r15
    11:	41 c1 da 02          	rcr    r10d,0x2
    15:	4d 85 ff             	test   r15,r15
    18:	41 c1 db 02          	rcr    r11d,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 9.0
  • Core cycles: 23.98
  • Reference cycles: 18.03
  • UOPS_EXECUTED.THREAD: 32.5
  • RETIRE_SLOTS: 32.5
  • UOPS_MITE: 12.5
  • UOPS_MS: 20.01
  • UOPS_PORT_0: 6.0
  • UOPS_PORT_1: 8.0
  • UOPS_PORT_6: 8.5
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 10.0
  • UOPS_PORT_5B>=2: 0.01
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 8.0

With loop_count=100 and unroll_count=20

• Code:

     0:	4d 85 ff             	test   r15,r15
     3:	41 c1 d8 02          	rcr    r8d,0x2
     7:	4d 85 ff             	test   r15,r15
     a:	41 c1 d9 02          	rcr    r9d,0x2
     e:	4d 85 ff             	test   r15,r15
    11:	41 c1 da 02          	rcr    r10d,0x2
    15:	4d 85 ff             	test   r15,r15
    18:	41 c1 db 02          	rcr    r11d,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 8.1
  • Core cycles: 23.96
  • Reference cycles: 18.03
  • UOPS_EXECUTED.THREAD: 32.05
  • RETIRE_SLOTS: 32.05
  • UOPS_MITE: 12.05
  • UOPS_MS: 20.01
  • UOPS_PORT_0: 6.0
  • UOPS_PORT_1: 8.0
  • UOPS_PORT_6: 8.05
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 10.0
  • UOPS_PORT_5B>=2: 0.01
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 8.0

With unroll_count=100 and no inner loop

• Code:

     0:	41 c1 d8 02          	rcr    r8d,0x2
     4:	41 c1 d9 02          	rcr    r9d,0x2
     8:	41 c1 da 02          	rcr    r10d,0x2
     c:	41 c1 db 02          	rcr    r11d,0x2
    10:	41 c1 dc 02          	rcr    r12d,0x2
    14:	41 c1 dd 02          	rcr    r13d,0x2
    18:	41 c1 de 02          	rcr    r14d,0x2
    1c:	c1 db 02             	rcr    ebx,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 8.0
  • Core cycles: 48.0
  • Reference cycles: 36.0
  • UOPS_EXECUTED.THREAD: 56.0
  • RETIRE_SLOTS: 56.0
  • UOPS_MITE: 16.01
  • UOPS_MS: 40.02
  • UOPS_PORT_0: 8.44
  • UOPS_PORT_1: 16.05
  • UOPS_PORT_6: 15.92
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 15.63
  • UOPS_PORT_5B>=2: 0.0
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 8.0

With loop_count=1000 and unroll_count=1

• Code:

     0:	41 c1 d8 02          	rcr    r8d,0x2
     4:	41 c1 d9 02          	rcr    r9d,0x2
     8:	41 c1 da 02          	rcr    r10d,0x2
     c:	41 c1 db 02          	rcr    r11d,0x2
    10:	41 c1 dc 02          	rcr    r12d,0x2
    14:	41 c1 dd 02          	rcr    r13d,0x2
    18:	41 c1 de 02          	rcr    r14d,0x2
    1c:	c1 db 02             	rcr    ebx,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 10.0
  • Core cycles: 48.01
  • Reference cycles: 36.1
  • UOPS_EXECUTED.THREAD: 57.0
  • RETIRE_SLOTS: 57.0
  • UOPS_MITE: 17.03
  • UOPS_MS: 40.09
  • UOPS_PORT_0: 8.43
  • UOPS_PORT_1: 16.06
  • UOPS_PORT_6: 16.88
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 15.6
  • UOPS_PORT_5B>=2: 0.0
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 9.02

With loop_count=100 and unroll_count=10

• Code:

     0:	41 c1 d8 02          	rcr    r8d,0x2
     4:	41 c1 d9 02          	rcr    r9d,0x2
     8:	41 c1 da 02          	rcr    r10d,0x2
     c:	41 c1 db 02          	rcr    r11d,0x2
    10:	41 c1 dc 02          	rcr    r12d,0x2
    14:	41 c1 dd 02          	rcr    r13d,0x2
    18:	41 c1 de 02          	rcr    r14d,0x2
    1c:	c1 db 02             	rcr    ebx,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 8.2
  • Core cycles: 48.01
  • Reference cycles: 36.14
  • UOPS_EXECUTED.THREAD: 56.1
  • RETIRE_SLOTS: 56.1
  • UOPS_MITE: 16.09
  • UOPS_MS: 40.01
  • UOPS_PORT_0: 8.41
  • UOPS_PORT_1: 16.05
  • UOPS_PORT_6: 16.02
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 15.62
  • UOPS_PORT_5B>=2: 0.0
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 8.1

With additional dependency-breaking instructions

With unroll_count=100 and no inner loop

• Code:

     0:	4d 85 ff             	test   r15,r15
     3:	41 c1 d8 02          	rcr    r8d,0x2
     7:	4d 85 ff             	test   r15,r15
     a:	41 c1 d9 02          	rcr    r9d,0x2
     e:	4d 85 ff             	test   r15,r15
    11:	41 c1 da 02          	rcr    r10d,0x2
    15:	4d 85 ff             	test   r15,r15
    18:	41 c1 db 02          	rcr    r11d,0x2
    1c:	4d 85 ff             	test   r15,r15
    1f:	41 c1 dc 02          	rcr    r12d,0x2
    23:	4d 85 ff             	test   r15,r15
    26:	41 c1 dd 02          	rcr    r13d,0x2
    2a:	4d 85 ff             	test   r15,r15
    2d:	41 c1 de 02          	rcr    r14d,0x2
    31:	4d 85 ff             	test   r15,r15
    34:	c1 db 02             	rcr    ebx,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 16.0
  • Core cycles: 48.01
  • Reference cycles: 36.16
  • UOPS_EXECUTED.THREAD: 64.0
  • RETIRE_SLOTS: 64.0
  • UOPS_MITE: 24.0
  • UOPS_MS: 40.0
  • UOPS_PORT_0: 12.0
  • UOPS_PORT_1: 16.0
  • UOPS_PORT_6: 16.0
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 20.0
  • UOPS_PORT_5B>=2: 0.0
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 16.0

With loop_count=1000 and unroll_count=1

• Code:

     0:	4d 85 ff             	test   r15,r15
     3:	41 c1 d8 02          	rcr    r8d,0x2
     7:	4d 85 ff             	test   r15,r15
     a:	41 c1 d9 02          	rcr    r9d,0x2
     e:	4d 85 ff             	test   r15,r15
    11:	41 c1 da 02          	rcr    r10d,0x2
    15:	4d 85 ff             	test   r15,r15
    18:	41 c1 db 02          	rcr    r11d,0x2
    1c:	4d 85 ff             	test   r15,r15
    1f:	41 c1 dc 02          	rcr    r12d,0x2
    23:	4d 85 ff             	test   r15,r15
    26:	41 c1 dd 02          	rcr    r13d,0x2
    2a:	4d 85 ff             	test   r15,r15
    2d:	41 c1 de 02          	rcr    r14d,0x2
    31:	4d 85 ff             	test   r15,r15
    34:	c1 db 02             	rcr    ebx,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 18.0
  • Core cycles: 47.95
  • Reference cycles: 36.08
  • UOPS_EXECUTED.THREAD: 65.0
  • RETIRE_SLOTS: 65.0
  • UOPS_MITE: 25.0
  • UOPS_MS: 40.02
  • UOPS_PORT_0: 12.0
  • UOPS_PORT_1: 16.0
  • UOPS_PORT_6: 17.0
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 20.0
  • UOPS_PORT_5B>=2: 0.02
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 16.0

With loop_count=100 and unroll_count=10

• Code:

     0:	4d 85 ff             	test   r15,r15
     3:	41 c1 d8 02          	rcr    r8d,0x2
     7:	4d 85 ff             	test   r15,r15
     a:	41 c1 d9 02          	rcr    r9d,0x2
     e:	4d 85 ff             	test   r15,r15
    11:	41 c1 da 02          	rcr    r10d,0x2
    15:	4d 85 ff             	test   r15,r15
    18:	41 c1 db 02          	rcr    r11d,0x2
    1c:	4d 85 ff             	test   r15,r15
    1f:	41 c1 dc 02          	rcr    r12d,0x2
    23:	4d 85 ff             	test   r15,r15
    26:	41 c1 dd 02          	rcr    r13d,0x2
    2a:	4d 85 ff             	test   r15,r15
    2d:	41 c1 de 02          	rcr    r14d,0x2
    31:	4d 85 ff             	test   r15,r15
    34:	c1 db 02             	rcr    ebx,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 16.2
  • Core cycles: 47.93
  • Reference cycles: 36.06
  • UOPS_EXECUTED.THREAD: 64.1
  • RETIRE_SLOTS: 64.1
  • UOPS_MITE: 24.09
  • UOPS_MS: 40.01
  • UOPS_PORT_0: 12.0
  • UOPS_PORT_1: 16.0
  • UOPS_PORT_6: 16.1
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 20.0
  • UOPS_PORT_5B>=2: 0.02
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 16.0

With unroll_count=100 and no inner loop

• Code:

     0:	41 c1 d8 02          	rcr    r8d,0x2
     4:	41 c1 d9 02          	rcr    r9d,0x2
     8:	41 c1 da 02          	rcr    r10d,0x2
     c:	41 c1 db 02          	rcr    r11d,0x2
    10:	41 c1 dc 02          	rcr    r12d,0x2
    14:	41 c1 dd 02          	rcr    r13d,0x2
    18:	41 c1 de 02          	rcr    r14d,0x2
    1c:	c1 db 02             	rcr    ebx,0x2
    1f:	c1 d9 02             	rcr    ecx,0x2
    22:	c1 da 02             	rcr    edx,0x2
    25:	c1 df 02             	rcr    edi,0x2
    28:	c1 de 02             	rcr    esi,0x2
    2b:	c1 dd 02             	rcr    ebp,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 13.0
  • Core cycles: 77.99
  • Reference cycles: 58.56
  • UOPS_EXECUTED.THREAD: 91.01
  • RETIRE_SLOTS: 91.0
  • UOPS_MITE: 26.0
  • UOPS_MS: 64.98
  • UOPS_PORT_0: 13.37
  • UOPS_PORT_1: 26.0
  • UOPS_PORT_6: 25.64
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 26.01
  • UOPS_PORT_5B>=2: 0.0
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 13.0

With loop_count=1000 and unroll_count=1

• Code:

     0:	41 c1 d8 02          	rcr    r8d,0x2
     4:	41 c1 d9 02          	rcr    r9d,0x2
     8:	41 c1 da 02          	rcr    r10d,0x2
     c:	41 c1 db 02          	rcr    r11d,0x2
    10:	41 c1 dc 02          	rcr    r12d,0x2
    14:	41 c1 dd 02          	rcr    r13d,0x2
    18:	41 c1 de 02          	rcr    r14d,0x2
    1c:	c1 db 02             	rcr    ebx,0x2
    1f:	c1 d9 02             	rcr    ecx,0x2
    22:	c1 da 02             	rcr    edx,0x2
    25:	c1 df 02             	rcr    edi,0x2
    28:	c1 de 02             	rcr    esi,0x2
    2b:	c1 dd 02             	rcr    ebp,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 15.0
  • Core cycles: 78.01
  • Reference cycles: 58.72
  • UOPS_EXECUTED.THREAD: 92.0
  • RETIRE_SLOTS: 92.0
  • UOPS_MITE: 27.03
  • UOPS_MS: 65.09
  • UOPS_PORT_0: 13.43
  • UOPS_PORT_1: 26.0
  • UOPS_PORT_6: 26.6
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 25.97
  • UOPS_PORT_5B>=2: 0.0
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 14.01

With loop_count=100 and unroll_count=10

• Code:

     0:	41 c1 d8 02          	rcr    r8d,0x2
     4:	41 c1 d9 02          	rcr    r9d,0x2
     8:	41 c1 da 02          	rcr    r10d,0x2
     c:	41 c1 db 02          	rcr    r11d,0x2
    10:	41 c1 dc 02          	rcr    r12d,0x2
    14:	41 c1 dd 02          	rcr    r13d,0x2
    18:	41 c1 de 02          	rcr    r14d,0x2
    1c:	c1 db 02             	rcr    ebx,0x2
    1f:	c1 d9 02             	rcr    ecx,0x2
    22:	c1 da 02             	rcr    edx,0x2
    25:	c1 df 02             	rcr    edi,0x2
    28:	c1 de 02             	rcr    esi,0x2
    2b:	c1 dd 02             	rcr    ebp,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 13.2
  • Core cycles: 78.01
  • Reference cycles: 58.7
  • UOPS_EXECUTED.THREAD: 91.1
  • RETIRE_SLOTS: 91.1
  • UOPS_MITE: 26.09
  • UOPS_MS: 65.0
  • UOPS_PORT_0: 13.39
  • UOPS_PORT_1: 26.0
  • UOPS_PORT_6: 25.72
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 25.99
  • UOPS_PORT_5B>=2: 0.0
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 13.1

With additional dependency-breaking instructions

With unroll_count=100 and no inner loop

• Code:

     0:	4d 85 ff             	test   r15,r15
     3:	41 c1 d8 02          	rcr    r8d,0x2
     7:	4d 85 ff             	test   r15,r15
     a:	41 c1 d9 02          	rcr    r9d,0x2
     e:	4d 85 ff             	test   r15,r15
    11:	41 c1 da 02          	rcr    r10d,0x2
    15:	4d 85 ff             	test   r15,r15
    18:	41 c1 db 02          	rcr    r11d,0x2
    1c:	4d 85 ff             	test   r15,r15
    1f:	41 c1 dc 02          	rcr    r12d,0x2
    23:	4d 85 ff             	test   r15,r15
    26:	41 c1 dd 02          	rcr    r13d,0x2
    2a:	4d 85 ff             	test   r15,r15
    2d:	41 c1 de 02          	rcr    r14d,0x2
    31:	4d 85 ff             	test   r15,r15
    34:	c1 db 02             	rcr    ebx,0x2
    37:	4d 85 ff             	test   r15,r15
    3a:	c1 d9 02             	rcr    ecx,0x2
    3d:	4d 85 ff             	test   r15,r15
    40:	c1 da 02             	rcr    edx,0x2
    43:	4d 85 ff             	test   r15,r15
    46:	c1 df 02             	rcr    edi,0x2
    49:	4d 85 ff             	test   r15,r15
    4c:	c1 de 02             	rcr    esi,0x2
    4f:	4d 85 ff             	test   r15,r15
    52:	c1 dd 02             	rcr    ebp,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 26.0
  • Core cycles: 77.3
  • Reference cycles: 58.4
  • UOPS_EXECUTED.THREAD: 104.0
  • RETIRE_SLOTS: 104.0
  • UOPS_MITE: 38.74
  • UOPS_MS: 65.06
  • UOPS_PORT_0: 19.49
  • UOPS_PORT_1: 26.03
  • UOPS_PORT_6: 25.97
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 32.51
  • UOPS_PORT_5B>=2: 0.18
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 25.96

With loop_count=1000 and unroll_count=1

• Code:

     0:	4d 85 ff             	test   r15,r15
     3:	41 c1 d8 02          	rcr    r8d,0x2
     7:	4d 85 ff             	test   r15,r15
     a:	41 c1 d9 02          	rcr    r9d,0x2
     e:	4d 85 ff             	test   r15,r15
    11:	41 c1 da 02          	rcr    r10d,0x2
    15:	4d 85 ff             	test   r15,r15
    18:	41 c1 db 02          	rcr    r11d,0x2
    1c:	4d 85 ff             	test   r15,r15
    1f:	41 c1 dc 02          	rcr    r12d,0x2
    23:	4d 85 ff             	test   r15,r15
    26:	41 c1 dd 02          	rcr    r13d,0x2
    2a:	4d 85 ff             	test   r15,r15
    2d:	41 c1 de 02          	rcr    r14d,0x2
    31:	4d 85 ff             	test   r15,r15
    34:	c1 db 02             	rcr    ebx,0x2
    37:	4d 85 ff             	test   r15,r15
    3a:	c1 d9 02             	rcr    ecx,0x2
    3d:	4d 85 ff             	test   r15,r15
    40:	c1 da 02             	rcr    edx,0x2
    43:	4d 85 ff             	test   r15,r15
    46:	c1 df 02             	rcr    edi,0x2
    49:	4d 85 ff             	test   r15,r15
    4c:	c1 de 02             	rcr    esi,0x2
    4f:	4d 85 ff             	test   r15,r15
    52:	c1 dd 02             	rcr    ebp,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 28.0
  • Core cycles: 77.95
  • Reference cycles: 58.66
  • UOPS_EXECUTED.THREAD: 105.0
  • RETIRE_SLOTS: 105.0
  • UOPS_MITE: 40.03
  • UOPS_MS: 65.02
  • UOPS_PORT_0: 20.0
  • UOPS_PORT_1: 26.0
  • UOPS_PORT_6: 26.0
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 33.0
  • UOPS_PORT_5B>=2: 0.02
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 26.0

With loop_count=100 and unroll_count=10

• Code:

     0:	4d 85 ff             	test   r15,r15
     3:	41 c1 d8 02          	rcr    r8d,0x2
     7:	4d 85 ff             	test   r15,r15
     a:	41 c1 d9 02          	rcr    r9d,0x2
     e:	4d 85 ff             	test   r15,r15
    11:	41 c1 da 02          	rcr    r10d,0x2
    15:	4d 85 ff             	test   r15,r15
    18:	41 c1 db 02          	rcr    r11d,0x2
    1c:	4d 85 ff             	test   r15,r15
    1f:	41 c1 dc 02          	rcr    r12d,0x2
    23:	4d 85 ff             	test   r15,r15
    26:	41 c1 dd 02          	rcr    r13d,0x2
    2a:	4d 85 ff             	test   r15,r15
    2d:	41 c1 de 02          	rcr    r14d,0x2
    31:	4d 85 ff             	test   r15,r15
    34:	c1 db 02             	rcr    ebx,0x2
    37:	4d 85 ff             	test   r15,r15
    3a:	c1 d9 02             	rcr    ecx,0x2
    3d:	4d 85 ff             	test   r15,r15
    40:	c1 da 02             	rcr    edx,0x2
    43:	4d 85 ff             	test   r15,r15
    46:	c1 df 02             	rcr    edi,0x2
    49:	4d 85 ff             	test   r15,r15
    4c:	c1 de 02             	rcr    esi,0x2
    4f:	4d 85 ff             	test   r15,r15
    52:	c1 dd 02             	rcr    ebp,0x2
  

• Show nanoBench command
• Results:
  • Instructions retired: 26.2
  • Core cycles: 77.93
  • Reference cycles: 58.62
  • UOPS_EXECUTED.THREAD: 104.1
  • RETIRE_SLOTS: 104.1
  • UOPS_MITE: 39.1
  • UOPS_MS: 65.01
  • UOPS_PORT_0: 19.5
  • UOPS_PORT_1: 26.0
  • UOPS_PORT_6: 26.1
  • UOPS_PORT_49: 0.0
  • UOPS_PORT_78: 0.0
  • UOPS_PORT_5B: 32.5
  • UOPS_PORT_5B>=2: 0.02
  • UOPS_PORT_23A: 0.0
  • DIV_CYCLES: 0.0
  • ILD_STALL.LCP: 0.0
  • UOPS_MITE>=1: 26.0