VGATHERQPD (YMM, VSIB_YMM, YMM) - Latency

Experiment 1

• Instruction: VGATHERQPD YMM0, [R14+YMM14], YMM1
• Chain instruction: VPCMPEQD YMM1, YMM1, YMM1
• Code:

     0:	c4 82 f5 93 04 36    	vgatherqpd ymm0,QWORD PTR [r14+ymm14*1],ymm1
     6:	c5 f5 76 c9          	vpcmpeqd ymm1,ymm1,ymm1
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM0, [R14];
  VXORPS YMM1, YMM1, YMM1;
  VXORPS YMM14, YMM14, YMM14

• Show nanoBench command
• Results:
  • MPERF: 7.62
  • APERF: 9.01
  • UOPS: 33.0

Experiment 2

• Instruction: VGATHERQPD YMM0, [R14+YMM14], YMM1
• Chain instructions: VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VPCMPEQD YMM1, YMM1, YMM1
• Chain latency: 13
• Code:

     0:	c4 82 f5 93 04 36    	vgatherqpd ymm0,QWORD PTR [r14+ymm14*1],ymm1
     6:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
     a:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
     e:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    12:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    16:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    1a:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    1e:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    22:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    26:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    2a:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    2e:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    32:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    36:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    3a:	c5 f5 76 c9          	vpcmpeqd ymm1,ymm1,ymm1
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM0, [R14];
  VXORPS YMM1, YMM1, YMM1;
  VXORPS YMM14, YMM14, YMM14

• Show nanoBench command
• Results:
  • MPERF: 14.4
  • APERF: 17.22
  • UOPS: 46.0

Experiment 3

• Instruction: VGATHERQPD YMM0, [R14+YMM14], YMM1
• Chain instructions: VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPCMPEQD YMM1, YMM1, YMM1
• Chain latency: 13
• Code:

     0:	c4 82 f5 93 04 36    	vgatherqpd ymm0,QWORD PTR [r14+ymm14*1],ymm1
     6:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
     a:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
     e:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    12:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    16:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    1a:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    1e:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    22:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    26:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    2a:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    2e:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    32:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    36:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    3a:	c5 f5 76 c9          	vpcmpeqd ymm1,ymm1,ymm1
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM0, [R14];
  VXORPS YMM1, YMM1, YMM1;
  VXORPS YMM14, YMM14, YMM14

• Show nanoBench command
• Results:
  • MPERF: 16.2
  • APERF: 19.23
  • UOPS: 46.0

Experiment 4 (source registers initialized by an instruction of the same kind)

• Instruction: VGATHERQPD YMM0, [R14+YMM14], YMM1
• Chain instruction: VPCMPEQD YMM1, YMM1, YMM1
• Code:

     0:	c4 82 f5 93 04 36    	vgatherqpd ymm0,QWORD PTR [r14+ymm14*1],ymm1
     6:	c5 f5 76 c9          	vpcmpeqd ymm1,ymm1,ymm1
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM0, [R14];
  VXORPS YMM1, YMM1, YMM1;
  VXORPS YMM14, YMM14, YMM14;
  VGATHERQPD YMM0, [R14+YMM14], YMM1;
  VGATHERQPD YMM1, [R14+YMM14], YMM0

• Show nanoBench command
• Results:
  • MPERF: 7.56
  • APERF: 9.0
  • UOPS: 33.0

Experiment 5 (source registers initialized by an instruction of the same kind)

• Instruction: VGATHERQPD YMM0, [R14+YMM14], YMM1
• Chain instructions: VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VPCMPEQD YMM1, YMM1, YMM1
• Chain latency: 13
• Code:

     0:	c4 82 f5 93 04 36    	vgatherqpd ymm0,QWORD PTR [r14+ymm14*1],ymm1
     6:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
     a:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
     e:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    12:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    16:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    1a:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    1e:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    22:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    26:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    2a:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    2e:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    32:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    36:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    3a:	c5 f5 76 c9          	vpcmpeqd ymm1,ymm1,ymm1
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM0, [R14];
  VXORPS YMM1, YMM1, YMM1;
  VXORPS YMM14, YMM14, YMM14;
  VGATHERQPD YMM0, [R14+YMM14], YMM1;
  VGATHERQPD YMM1, [R14+YMM14], YMM0

• Show nanoBench command
• Results:
  • MPERF: 14.76
  • APERF: 17.44
  • UOPS: 46.0

Experiment 6 (source registers initialized by an instruction of the same kind)

• Instruction: VGATHERQPD YMM0, [R14+YMM14], YMM1
• Chain instructions: VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPCMPEQD YMM1, YMM1, YMM1
• Chain latency: 13
• Code:

     0:	c4 82 f5 93 04 36    	vgatherqpd ymm0,QWORD PTR [r14+ymm14*1],ymm1
     6:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
     a:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
     e:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    12:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    16:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    1a:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    1e:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    22:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    26:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    2a:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    2e:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    32:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    36:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    3a:	c5 f5 76 c9          	vpcmpeqd ymm1,ymm1,ymm1
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM0, [R14];
  VXORPS YMM1, YMM1, YMM1;
  VXORPS YMM14, YMM14, YMM14;
  VGATHERQPD YMM0, [R14+YMM14], YMM1;
  VGATHERQPD YMM1, [R14+YMM14], YMM0

• Show nanoBench command
• Results:
  • MPERF: 16.08
  • APERF: 19.25
  • UOPS: 46.0

Experiment 1

• Instruction: VGATHERQPD YMM0, [R14+YMM14], YMM1
• Chain instructions: VANDPD YMM0, YMM1, YMM1;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VPCMPEQD YMM1, YMM1, YMM1
• Chain latency: 13
• Code:

     0:	c4 82 f5 93 04 36    	vgatherqpd ymm0,QWORD PTR [r14+ymm14*1],ymm1
     6:	c5 f5 54 c1          	vandpd ymm0,ymm1,ymm1
     a:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
     e:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    12:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    16:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    1a:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    1e:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    22:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    26:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    2a:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    2e:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    32:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    36:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    3a:	c5 f5 76 c9          	vpcmpeqd ymm1,ymm1,ymm1
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM0, [R14];
  VXORPS YMM1, YMM1, YMM1;
  VXORPS YMM14, YMM14, YMM14

• Show nanoBench command
• Results:
  • MPERF: 10.08
  • APERF: 12.0
  • UOPS: 46.0

Experiment 2

• Instruction: VGATHERQPD YMM0, [R14+YMM14], YMM1
• Chain instructions: VPAND YMM0, YMM1, YMM1;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPCMPEQD YMM1, YMM1, YMM1
• Chain latency: 13
• Code:

     0:	c4 82 f5 93 04 36    	vgatherqpd ymm0,QWORD PTR [r14+ymm14*1],ymm1
     6:	c5 f5 db c1          	vpand  ymm0,ymm1,ymm1
     a:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
     e:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    12:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    16:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    1a:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    1e:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    22:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    26:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    2a:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    2e:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    32:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    36:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    3a:	c5 f5 76 c9          	vpcmpeqd ymm1,ymm1,ymm1
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM0, [R14];
  VXORPS YMM1, YMM1, YMM1;
  VXORPS YMM14, YMM14, YMM14

• Show nanoBench command
• Results:
  • MPERF: 10.26
  • APERF: 12.01
  • UOPS: 46.0

Experiment 3 (source registers initialized by an instruction of the same kind)

• Instruction: VGATHERQPD YMM0, [R14+YMM14], YMM1
• Chain instructions: VANDPD YMM0, YMM1, YMM1;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VPCMPEQD YMM1, YMM1, YMM1
• Chain latency: 13
• Code:

     0:	c4 82 f5 93 04 36    	vgatherqpd ymm0,QWORD PTR [r14+ymm14*1],ymm1
     6:	c5 f5 54 c1          	vandpd ymm0,ymm1,ymm1
     a:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
     e:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    12:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    16:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    1a:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    1e:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    22:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    26:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    2a:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    2e:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    32:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    36:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    3a:	c5 f5 76 c9          	vpcmpeqd ymm1,ymm1,ymm1
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM0, [R14];
  VXORPS YMM1, YMM1, YMM1;
  VXORPS YMM14, YMM14, YMM14;
  VGATHERQPD YMM0, [R14+YMM14], YMM1;
  VGATHERQPD YMM1, [R14+YMM14], YMM0

• Show nanoBench command
• Results:
  • MPERF: 10.2
  • APERF: 12.0
  • UOPS: 46.0

Experiment 4 (source registers initialized by an instruction of the same kind)

• Instruction: VGATHERQPD YMM0, [R14+YMM14], YMM1
• Chain instructions: VPAND YMM0, YMM1, YMM1;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPCMPEQD YMM1, YMM1, YMM1
• Chain latency: 13
• Code:

     0:	c4 82 f5 93 04 36    	vgatherqpd ymm0,QWORD PTR [r14+ymm14*1],ymm1
     6:	c5 f5 db c1          	vpand  ymm0,ymm1,ymm1
     a:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
     e:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    12:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    16:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    1a:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    1e:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    22:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    26:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    2a:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    2e:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    32:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    36:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    3a:	c5 f5 76 c9          	vpcmpeqd ymm1,ymm1,ymm1
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM0, [R14];
  VXORPS YMM1, YMM1, YMM1;
  VXORPS YMM14, YMM14, YMM14;
  VGATHERQPD YMM0, [R14+YMM14], YMM1;
  VGATHERQPD YMM1, [R14+YMM14], YMM0

• Show nanoBench command
• Results:
  • MPERF: 10.08
  • APERF: 11.99
  • UOPS: 46.0

Experiment 1

• Instruction: VGATHERQPD YMM0, [R14+YMM14], YMM1
• Chain instructions: VMOVQ R12, XMM0;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;VPCMPEQD YMM1, YMM1, YMM1
• Chain latency: ≥13
• Code:

     0:	c4 82 f5 93 04 36    	vgatherqpd ymm0,QWORD PTR [r14+ymm14*1],ymm1
     6:	c4 c1 f9 7e c4       	vmovq  r12,xmm0
     b:	4d 31 e6             	xor    r14,r12
     e:	4d 31 e6             	xor    r14,r12
    11:	4d 31 e6             	xor    r14,r12
    14:	4d 31 e6             	xor    r14,r12
    17:	4d 31 e6             	xor    r14,r12
    1a:	4d 31 e6             	xor    r14,r12
    1d:	4d 31 e6             	xor    r14,r12
    20:	4d 31 e6             	xor    r14,r12
    23:	4d 31 e6             	xor    r14,r12
    26:	4d 31 e6             	xor    r14,r12
    29:	4d 31 e6             	xor    r14,r12
    2c:	4d 31 e6             	xor    r14,r12
    2f:	c5 f5 76 c9          	vpcmpeqd ymm1,ymm1,ymm1
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM0, [R14];
  VXORPS YMM1, YMM1, YMM1;
  VXORPS YMM14, YMM14, YMM14

• Show nanoBench command
• Results:
  • MPERF: 26.4
  • APERF: 31.25
  • UOPS: 46.0

Experiment 2 (source registers initialized by an instruction of the same kind)

• Instruction: VGATHERQPD YMM0, [R14+YMM14], YMM1
• Chain instructions: VMOVQ R12, XMM0;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;VPCMPEQD YMM1, YMM1, YMM1
• Chain latency: ≥13
• Code:

     0:	c4 82 f5 93 04 36    	vgatherqpd ymm0,QWORD PTR [r14+ymm14*1],ymm1
     6:	c4 c1 f9 7e c4       	vmovq  r12,xmm0
     b:	4d 31 e6             	xor    r14,r12
     e:	4d 31 e6             	xor    r14,r12
    11:	4d 31 e6             	xor    r14,r12
    14:	4d 31 e6             	xor    r14,r12
    17:	4d 31 e6             	xor    r14,r12
    1a:	4d 31 e6             	xor    r14,r12
    1d:	4d 31 e6             	xor    r14,r12
    20:	4d 31 e6             	xor    r14,r12
    23:	4d 31 e6             	xor    r14,r12
    26:	4d 31 e6             	xor    r14,r12
    29:	4d 31 e6             	xor    r14,r12
    2c:	4d 31 e6             	xor    r14,r12
    2f:	c5 f5 76 c9          	vpcmpeqd ymm1,ymm1,ymm1
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM0, [R14];
  VXORPS YMM1, YMM1, YMM1;
  VXORPS YMM14, YMM14, YMM14;
  VGATHERQPD YMM0, [R14+YMM14], YMM1;
  VGATHERQPD YMM1, [R14+YMM14], YMM0

• Show nanoBench command
• Results:
  • MPERF: 26.34
  • APERF: 31.25
  • UOPS: 46.0

Experiment 1

• Instruction: VGATHERQPD YMM0, [R14+YMM14], YMM1
• Chain instructions: VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VPCMPEQD YMM1, YMM1, YMM1
• Chain latency: ≥12
• Code:

     0:	c4 82 f5 93 04 36    	vgatherqpd ymm0,QWORD PTR [r14+ymm14*1],ymm1
     6:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
     a:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
     e:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    12:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    16:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    1a:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    1e:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    22:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    26:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    2a:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    2e:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    32:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    36:	c5 f5 76 c9          	vpcmpeqd ymm1,ymm1,ymm1
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM0, [R14];
  VXORPS YMM1, YMM1, YMM1;
  VXORPS YMM14, YMM14, YMM14

• Show nanoBench command
• Results:
  • MPERF: 25.26
  • APERF: 30.0
  • UOPS: 45.0

Experiment 2 (source registers initialized by an instruction of the same kind)

• Instruction: VGATHERQPD YMM0, [R14+YMM14], YMM1
• Chain instructions: VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VPCMPEQD YMM1, YMM1, YMM1
• Chain latency: ≥12
• Code:

     0:	c4 82 f5 93 04 36    	vgatherqpd ymm0,QWORD PTR [r14+ymm14*1],ymm1
     6:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
     a:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
     e:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    12:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    16:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    1a:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    1e:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    22:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    26:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    2a:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    2e:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    32:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    36:	c5 f5 76 c9          	vpcmpeqd ymm1,ymm1,ymm1
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM0, [R14];
  VXORPS YMM1, YMM1, YMM1;
  VXORPS YMM14, YMM14, YMM14;
  VGATHERQPD YMM0, [R14+YMM14], YMM1;
  VGATHERQPD YMM1, [R14+YMM14], YMM0

• Show nanoBench command
• Results:
  • MPERF: 25.44
  • APERF: 30.0
  • UOPS: 45.0

Experiment 1

• Instruction: VGATHERQPD YMM0, [R14+YMM14], YMM1
• Chain instructions: VANDPD XMM13, XMM0, XMM0;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VMOVSD [R14], XMM13;VPCMPEQD YMM1, YMM1, YMM1
• Chain latency: ≥14
• Code:

     0:	c4 82 f5 93 04 36    	vgatherqpd ymm0,QWORD PTR [r14+ymm14*1],ymm1
     6:	c5 79 54 e8          	vandpd xmm13,xmm0,xmm0
     a:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
     f:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    14:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    19:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    1e:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    23:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    28:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    2d:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    32:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    37:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    3c:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    41:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    46:	c4 41 7b 11 2e       	vmovsd QWORD PTR [r14],xmm13
    4b:	c5 f5 76 c9          	vpcmpeqd ymm1,ymm1,ymm1
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM0, [R14];
  VXORPS YMM1, YMM1, YMM1;
  VXORPS YMM14, YMM14, YMM14

• Show nanoBench command
• Results:
  • MPERF: 21.3
  • APERF: 25.34
  • UOPS: 47.0

Experiment 2

• Instruction: VGATHERQPD YMM0, [R14+YMM14], YMM1
• Chain instructions: VPAND XMM13, XMM0, XMM0;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VMOVQ [R14], XMM13;VPCMPEQD YMM1, YMM1, YMM1
• Chain latency: ≥14
• Code:

     0:	c4 82 f5 93 04 36    	vgatherqpd ymm0,QWORD PTR [r14+ymm14*1],ymm1
     6:	c5 79 db e8          	vpand  xmm13,xmm0,xmm0
     a:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
     f:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    14:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    19:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    1e:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    23:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    28:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    2d:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    32:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    37:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    3c:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    41:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    46:	c4 41 79 d6 2e       	vmovq  QWORD PTR [r14],xmm13
    4b:	c5 f5 76 c9          	vpcmpeqd ymm1,ymm1,ymm1
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM0, [R14];
  VXORPS YMM1, YMM1, YMM1;
  VXORPS YMM14, YMM14, YMM14

• Show nanoBench command
• Results:
  • MPERF: 22.2
  • APERF: 26.31
  • UOPS: 47.0

Experiment 3 (source registers initialized by an instruction of the same kind)

• Instruction: VGATHERQPD YMM0, [R14+YMM14], YMM1
• Chain instructions: VANDPD XMM13, XMM0, XMM0;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VMOVSD [R14], XMM13;VPCMPEQD YMM1, YMM1, YMM1
• Chain latency: ≥14
• Code:

     0:	c4 82 f5 93 04 36    	vgatherqpd ymm0,QWORD PTR [r14+ymm14*1],ymm1
     6:	c5 79 54 e8          	vandpd xmm13,xmm0,xmm0
     a:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
     f:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    14:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    19:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    1e:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    23:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    28:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    2d:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    32:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    37:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    3c:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    41:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    46:	c4 41 7b 11 2e       	vmovsd QWORD PTR [r14],xmm13
    4b:	c5 f5 76 c9          	vpcmpeqd ymm1,ymm1,ymm1
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM0, [R14];
  VXORPS YMM1, YMM1, YMM1;
  VXORPS YMM14, YMM14, YMM14;
  VGATHERQPD YMM0, [R14+YMM14], YMM1;
  VGATHERQPD YMM1, [R14+YMM14], YMM0

• Show nanoBench command
• Results:
  • MPERF: 21.18
  • APERF: 25.29
  • UOPS: 47.0

Experiment 4 (source registers initialized by an instruction of the same kind)

• Instruction: VGATHERQPD YMM0, [R14+YMM14], YMM1
• Chain instructions: VPAND XMM13, XMM0, XMM0;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VMOVQ [R14], XMM13;VPCMPEQD YMM1, YMM1, YMM1
• Chain latency: ≥14
• Code:

     0:	c4 82 f5 93 04 36    	vgatherqpd ymm0,QWORD PTR [r14+ymm14*1],ymm1
     6:	c5 79 db e8          	vpand  xmm13,xmm0,xmm0
     a:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
     f:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    14:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    19:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    1e:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    23:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    28:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    2d:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    32:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    37:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    3c:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    41:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    46:	c4 41 79 d6 2e       	vmovq  QWORD PTR [r14],xmm13
    4b:	c5 f5 76 c9          	vpcmpeqd ymm1,ymm1,ymm1
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM0, [R14];
  VXORPS YMM1, YMM1, YMM1;
  VXORPS YMM14, YMM14, YMM14;
  VGATHERQPD YMM0, [R14+YMM14], YMM1;
  VGATHERQPD YMM1, [R14+YMM14], YMM0

• Show nanoBench command
• Results:
  • MPERF: 22.08
  • APERF: 26.29
  • UOPS: 47.0

Experiment 1

• Instruction: VGATHERQPD YMM1, [R14+YMM14], YMM0
• Chain instructions: VMOVQ R12, XMM0;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;VPCMPEQD YMM0, YMM0, YMM0
• Chain latency: ≥13
• Code:

     0:	c4 82 fd 93 0c 36    	vgatherqpd ymm1,QWORD PTR [r14+ymm14*1],ymm0
     6:	c4 c1 f9 7e c4       	vmovq  r12,xmm0
     b:	4d 31 e6             	xor    r14,r12
     e:	4d 31 e6             	xor    r14,r12
    11:	4d 31 e6             	xor    r14,r12
    14:	4d 31 e6             	xor    r14,r12
    17:	4d 31 e6             	xor    r14,r12
    1a:	4d 31 e6             	xor    r14,r12
    1d:	4d 31 e6             	xor    r14,r12
    20:	4d 31 e6             	xor    r14,r12
    23:	4d 31 e6             	xor    r14,r12
    26:	4d 31 e6             	xor    r14,r12
    29:	4d 31 e6             	xor    r14,r12
    2c:	4d 31 e6             	xor    r14,r12
    2f:	c5 fd 76 c0          	vpcmpeqd ymm0,ymm0,ymm0
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM1, [R14];
  VXORPS YMM0, YMM0, YMM0;
  VXORPS YMM14, YMM14, YMM14

• Show nanoBench command
• Results:
  • MPERF: 13.32
  • APERF: 15.76
  • UOPS: 46.0

Experiment 2 (source registers initialized by an instruction of the same kind)

• Instruction: VGATHERQPD YMM1, [R14+YMM14], YMM0
• Chain instructions: VMOVQ R12, XMM0;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;XOR R14, R12;VPCMPEQD YMM0, YMM0, YMM0
• Chain latency: ≥13
• Code:

     0:	c4 82 fd 93 0c 36    	vgatherqpd ymm1,QWORD PTR [r14+ymm14*1],ymm0
     6:	c4 c1 f9 7e c4       	vmovq  r12,xmm0
     b:	4d 31 e6             	xor    r14,r12
     e:	4d 31 e6             	xor    r14,r12
    11:	4d 31 e6             	xor    r14,r12
    14:	4d 31 e6             	xor    r14,r12
    17:	4d 31 e6             	xor    r14,r12
    1a:	4d 31 e6             	xor    r14,r12
    1d:	4d 31 e6             	xor    r14,r12
    20:	4d 31 e6             	xor    r14,r12
    23:	4d 31 e6             	xor    r14,r12
    26:	4d 31 e6             	xor    r14,r12
    29:	4d 31 e6             	xor    r14,r12
    2c:	4d 31 e6             	xor    r14,r12
    2f:	c5 fd 76 c0          	vpcmpeqd ymm0,ymm0,ymm0
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM1, [R14];
  VXORPS YMM0, YMM0, YMM0;
  VXORPS YMM14, YMM14, YMM14;
  VGATHERQPD YMM1, [R14+YMM14], YMM0;
  VGATHERQPD YMM0, [R14+YMM14], YMM1

• Show nanoBench command
• Results:
  • MPERF: 13.08
  • APERF: 15.77
  • UOPS: 46.0

Experiment 1

• Instruction: VGATHERQPD YMM1, [R14+YMM14], YMM0
• Chain instructions: VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VPCMPEQD YMM0, YMM0, YMM0
• Chain latency: ≥12
• Code:

     0:	c4 82 fd 93 0c 36    	vgatherqpd ymm1,QWORD PTR [r14+ymm14*1],ymm0
     6:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
     a:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
     e:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    12:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    16:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    1a:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    1e:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    22:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    26:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    2a:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    2e:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    32:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    36:	c5 fd 76 c0          	vpcmpeqd ymm0,ymm0,ymm0
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM1, [R14];
  VXORPS YMM0, YMM0, YMM0;
  VXORPS YMM14, YMM14, YMM14

• Show nanoBench command
• Results:
  • MPERF: 11.88
  • APERF: 14.22
  • UOPS: 45.0

Experiment 2 (source registers initialized by an instruction of the same kind)

• Instruction: VGATHERQPD YMM1, [R14+YMM14], YMM0
• Chain instructions: VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VANDPD YMM14, YMM14, YMM0;VPCMPEQD YMM0, YMM0, YMM0
• Chain latency: ≥12
• Code:

     0:	c4 82 fd 93 0c 36    	vgatherqpd ymm1,QWORD PTR [r14+ymm14*1],ymm0
     6:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
     a:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
     e:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    12:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    16:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    1a:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    1e:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    22:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    26:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    2a:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    2e:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    32:	c5 0d 54 f0          	vandpd ymm14,ymm14,ymm0
    36:	c5 fd 76 c0          	vpcmpeqd ymm0,ymm0,ymm0
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM1, [R14];
  VXORPS YMM0, YMM0, YMM0;
  VXORPS YMM14, YMM14, YMM14;
  VGATHERQPD YMM1, [R14+YMM14], YMM0;
  VGATHERQPD YMM0, [R14+YMM14], YMM1

• Show nanoBench command
• Results:
  • MPERF: 12.12
  • APERF: 14.28
  • UOPS: 45.0

Experiment 1

• Instruction: VGATHERQPD YMM1, [R14+YMM14], YMM0
• Chain instructions: VANDPD XMM13, XMM0, XMM0;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VMOVSD [R14], XMM13;VPCMPEQD YMM0, YMM0, YMM0
• Chain latency: ≥14
• Code:

     0:	c4 82 fd 93 0c 36    	vgatherqpd ymm1,QWORD PTR [r14+ymm14*1],ymm0
     6:	c5 79 54 e8          	vandpd xmm13,xmm0,xmm0
     a:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
     f:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    14:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    19:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    1e:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    23:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    28:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    2d:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    32:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    37:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    3c:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    41:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    46:	c4 41 7b 11 2e       	vmovsd QWORD PTR [r14],xmm13
    4b:	c5 fd 76 c0          	vpcmpeqd ymm0,ymm0,ymm0
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM1, [R14];
  VXORPS YMM0, YMM0, YMM0;
  VXORPS YMM14, YMM14, YMM14

• Show nanoBench command
• Results:
  • MPERF: 9.96
  • APERF: 12.01
  • UOPS: 47.0

Experiment 2

• Instruction: VGATHERQPD YMM1, [R14+YMM14], YMM0
• Chain instructions: VPAND XMM13, XMM0, XMM0;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VMOVQ [R14], XMM13;VPCMPEQD YMM0, YMM0, YMM0
• Chain latency: ≥14
• Code:

     0:	c4 82 fd 93 0c 36    	vgatherqpd ymm1,QWORD PTR [r14+ymm14*1],ymm0
     6:	c5 79 db e8          	vpand  xmm13,xmm0,xmm0
     a:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
     f:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    14:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    19:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    1e:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    23:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    28:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    2d:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    32:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    37:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    3c:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    41:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    46:	c4 41 79 d6 2e       	vmovq  QWORD PTR [r14],xmm13
    4b:	c5 fd 76 c0          	vpcmpeqd ymm0,ymm0,ymm0
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM1, [R14];
  VXORPS YMM0, YMM0, YMM0;
  VXORPS YMM14, YMM14, YMM14

• Show nanoBench command
• Results:
  • MPERF: 10.08
  • APERF: 12.0
  • UOPS: 47.0

Experiment 3 (source registers initialized by an instruction of the same kind)

• Instruction: VGATHERQPD YMM1, [R14+YMM14], YMM0
• Chain instructions: VANDPD XMM13, XMM0, XMM0;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VANDPD XMM13, XMM13, XMM13;VMOVSD [R14], XMM13;VPCMPEQD YMM0, YMM0, YMM0
• Chain latency: ≥14
• Code:

     0:	c4 82 fd 93 0c 36    	vgatherqpd ymm1,QWORD PTR [r14+ymm14*1],ymm0
     6:	c5 79 54 e8          	vandpd xmm13,xmm0,xmm0
     a:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
     f:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    14:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    19:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    1e:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    23:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    28:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    2d:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    32:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    37:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    3c:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    41:	c4 41 11 54 ed       	vandpd xmm13,xmm13,xmm13
    46:	c4 41 7b 11 2e       	vmovsd QWORD PTR [r14],xmm13
    4b:	c5 fd 76 c0          	vpcmpeqd ymm0,ymm0,ymm0
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM1, [R14];
  VXORPS YMM0, YMM0, YMM0;
  VXORPS YMM14, YMM14, YMM14;
  VGATHERQPD YMM1, [R14+YMM14], YMM0;
  VGATHERQPD YMM0, [R14+YMM14], YMM1

• Show nanoBench command
• Results:
  • MPERF: 10.44
  • APERF: 12.25
  • UOPS: 47.0

Experiment 4 (source registers initialized by an instruction of the same kind)

• Instruction: VGATHERQPD YMM1, [R14+YMM14], YMM0
• Chain instructions: VPAND XMM13, XMM0, XMM0;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VPAND XMM13, XMM13, XMM13;VMOVQ [R14], XMM13;VPCMPEQD YMM0, YMM0, YMM0
• Chain latency: ≥14
• Code:

     0:	c4 82 fd 93 0c 36    	vgatherqpd ymm1,QWORD PTR [r14+ymm14*1],ymm0
     6:	c5 79 db e8          	vpand  xmm13,xmm0,xmm0
     a:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
     f:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    14:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    19:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    1e:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    23:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    28:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    2d:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    32:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    37:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    3c:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    41:	c4 41 11 db ed       	vpand  xmm13,xmm13,xmm13
    46:	c4 41 79 d6 2e       	vmovq  QWORD PTR [r14],xmm13
    4b:	c5 fd 76 c0          	vpcmpeqd ymm0,ymm0,ymm0
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM1, [R14];
  VXORPS YMM0, YMM0, YMM0;
  VXORPS YMM14, YMM14, YMM14;
  VGATHERQPD YMM1, [R14+YMM14], YMM0;
  VGATHERQPD YMM0, [R14+YMM14], YMM1

• Show nanoBench command
• Results:
  • MPERF: 10.44
  • APERF: 12.24
  • UOPS: 47.0

Experiment 1

• Instruction: VGATHERQPD YMM1, [R14+YMM14], YMM0
• Chain instructions: VANDPD YMM0, YMM1, YMM1;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VPCMPEQD YMM13, YMM13, YMM13;VPOR YMM0, YMM0, YMM13
• Chain latency: 14
• Code:

     0:	c4 82 fd 93 0c 36    	vgatherqpd ymm1,QWORD PTR [r14+ymm14*1],ymm0
     6:	c5 f5 54 c1          	vandpd ymm0,ymm1,ymm1
     a:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
     e:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    12:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    16:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    1a:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    1e:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    22:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    26:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    2a:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    2e:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    32:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    36:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    3a:	c4 41 15 76 ed       	vpcmpeqd ymm13,ymm13,ymm13
    3f:	c4 c1 7d eb c5       	vpor   ymm0,ymm0,ymm13
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM1, [R14];
  VXORPS YMM0, YMM0, YMM0;
  VXORPS YMM14, YMM14, YMM14

• Show nanoBench command
• Results:
  • MPERF: 27.78
  • APERF: 32.94
  • UOPS: 47.0

Experiment 2

• Instruction: VGATHERQPD YMM1, [R14+YMM14], YMM0
• Chain instructions: VPAND YMM0, YMM1, YMM1;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPCMPEQD YMM13, YMM13, YMM13;VPOR YMM0, YMM0, YMM13
• Chain latency: 14
• Code:

     0:	c4 82 fd 93 0c 36    	vgatherqpd ymm1,QWORD PTR [r14+ymm14*1],ymm0
     6:	c5 f5 db c1          	vpand  ymm0,ymm1,ymm1
     a:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
     e:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    12:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    16:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    1a:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    1e:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    22:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    26:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    2a:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    2e:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    32:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    36:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    3a:	c4 41 15 76 ed       	vpcmpeqd ymm13,ymm13,ymm13
    3f:	c4 c1 7d eb c5       	vpor   ymm0,ymm0,ymm13
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM1, [R14];
  VXORPS YMM0, YMM0, YMM0;
  VXORPS YMM14, YMM14, YMM14

• Show nanoBench command
• Results:
  • MPERF: 27.3
  • APERF: 32.56
  • UOPS: 47.0

Experiment 3 (source registers initialized by an instruction of the same kind)

• Instruction: VGATHERQPD YMM1, [R14+YMM14], YMM0
• Chain instructions: VANDPD YMM0, YMM1, YMM1;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VPCMPEQD YMM13, YMM13, YMM13;VPOR YMM0, YMM0, YMM13
• Chain latency: 14
• Code:

     0:	c4 82 fd 93 0c 36    	vgatherqpd ymm1,QWORD PTR [r14+ymm14*1],ymm0
     6:	c5 f5 54 c1          	vandpd ymm0,ymm1,ymm1
     a:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
     e:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    12:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    16:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    1a:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    1e:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    22:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    26:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    2a:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    2e:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    32:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    36:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    3a:	c4 41 15 76 ed       	vpcmpeqd ymm13,ymm13,ymm13
    3f:	c4 c1 7d eb c5       	vpor   ymm0,ymm0,ymm13
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM1, [R14];
  VXORPS YMM0, YMM0, YMM0;
  VXORPS YMM14, YMM14, YMM14;
  VGATHERQPD YMM1, [R14+YMM14], YMM0;
  VGATHERQPD YMM0, [R14+YMM14], YMM1

• Show nanoBench command
• Results:
  • MPERF: 28.08
  • APERF: 33.32
  • UOPS: 47.0

Experiment 4 (source registers initialized by an instruction of the same kind)

• Instruction: VGATHERQPD YMM1, [R14+YMM14], YMM0
• Chain instructions: VPAND YMM0, YMM1, YMM1;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPCMPEQD YMM13, YMM13, YMM13;VPOR YMM0, YMM0, YMM13
• Chain latency: 14
• Code:

     0:	c4 82 fd 93 0c 36    	vgatherqpd ymm1,QWORD PTR [r14+ymm14*1],ymm0
     6:	c5 f5 db c1          	vpand  ymm0,ymm1,ymm1
     a:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
     e:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    12:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    16:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    1a:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    1e:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    22:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    26:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    2a:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    2e:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    32:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    36:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    3a:	c4 41 15 76 ed       	vpcmpeqd ymm13,ymm13,ymm13
    3f:	c4 c1 7d eb c5       	vpor   ymm0,ymm0,ymm13
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM1, [R14];
  VXORPS YMM0, YMM0, YMM0;
  VXORPS YMM14, YMM14, YMM14;
  VGATHERQPD YMM1, [R14+YMM14], YMM0;
  VGATHERQPD YMM0, [R14+YMM14], YMM1

• Show nanoBench command
• Results:
  • MPERF: 27.72
  • APERF: 32.84
  • UOPS: 47.0

Experiment 1

• Instruction: VGATHERQPD YMM1, [R14+YMM14], YMM0
• Chain instructions: VPCMPEQD YMM13, YMM13, YMM13;VPOR YMM0, YMM0, YMM13
• Chain latency: 1
• Code:

     0:	c4 82 fd 93 0c 36    	vgatherqpd ymm1,QWORD PTR [r14+ymm14*1],ymm0
     6:	c4 41 15 76 ed       	vpcmpeqd ymm13,ymm13,ymm13
     b:	c4 c1 7d eb c5       	vpor   ymm0,ymm0,ymm13
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM1, [R14];
  VXORPS YMM0, YMM0, YMM0;
  VXORPS YMM14, YMM14, YMM14

• Show nanoBench command
• Results:
  • MPERF: 7.62
  • APERF: 9.0
  • UOPS: 34.0

Experiment 2

• Instruction: VGATHERQPD YMM1, [R14+YMM14], YMM0
• Chain instructions: VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VPCMPEQD YMM13, YMM13, YMM13;VPOR YMM0, YMM0, YMM13
• Chain latency: 14
• Code:

     0:	c4 82 fd 93 0c 36    	vgatherqpd ymm1,QWORD PTR [r14+ymm14*1],ymm0
     6:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
     a:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
     e:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    12:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    16:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    1a:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    1e:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    22:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    26:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    2a:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    2e:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    32:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    36:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    3a:	c4 41 15 76 ed       	vpcmpeqd ymm13,ymm13,ymm13
    3f:	c4 c1 7d eb c5       	vpor   ymm0,ymm0,ymm13
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM1, [R14];
  VXORPS YMM0, YMM0, YMM0;
  VXORPS YMM14, YMM14, YMM14

• Show nanoBench command
• Results:
  • MPERF: 10.08
  • APERF: 11.99
  • UOPS: 47.0

Experiment 3

• Instruction: VGATHERQPD YMM1, [R14+YMM14], YMM0
• Chain instructions: VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPCMPEQD YMM13, YMM13, YMM13;VPOR YMM0, YMM0, YMM13
• Chain latency: 14
• Code:

     0:	c4 82 fd 93 0c 36    	vgatherqpd ymm1,QWORD PTR [r14+ymm14*1],ymm0
     6:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
     a:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
     e:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    12:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    16:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    1a:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    1e:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    22:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    26:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    2a:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    2e:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    32:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    36:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    3a:	c4 41 15 76 ed       	vpcmpeqd ymm13,ymm13,ymm13
    3f:	c4 c1 7d eb c5       	vpor   ymm0,ymm0,ymm13
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM1, [R14];
  VXORPS YMM0, YMM0, YMM0;
  VXORPS YMM14, YMM14, YMM14

• Show nanoBench command
• Results:
  • MPERF: 9.96
  • APERF: 11.98
  • UOPS: 47.0

Experiment 4 (source registers initialized by an instruction of the same kind)

• Instruction: VGATHERQPD YMM1, [R14+YMM14], YMM0
• Chain instructions: VPCMPEQD YMM13, YMM13, YMM13;VPOR YMM0, YMM0, YMM13
• Chain latency: 1
• Code:

     0:	c4 82 fd 93 0c 36    	vgatherqpd ymm1,QWORD PTR [r14+ymm14*1],ymm0
     6:	c4 41 15 76 ed       	vpcmpeqd ymm13,ymm13,ymm13
     b:	c4 c1 7d eb c5       	vpor   ymm0,ymm0,ymm13
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM1, [R14];
  VXORPS YMM0, YMM0, YMM0;
  VXORPS YMM14, YMM14, YMM14;
  VGATHERQPD YMM1, [R14+YMM14], YMM0;
  VGATHERQPD YMM0, [R14+YMM14], YMM1

• Show nanoBench command
• Results:
  • MPERF: 7.5
  • APERF: 9.0
  • UOPS: 34.0

Experiment 5 (source registers initialized by an instruction of the same kind)

• Instruction: VGATHERQPD YMM1, [R14+YMM14], YMM0
• Chain instructions: VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VANDPD YMM0, YMM0, YMM0;VPCMPEQD YMM13, YMM13, YMM13;VPOR YMM0, YMM0, YMM13
• Chain latency: 14
• Code:

     0:	c4 82 fd 93 0c 36    	vgatherqpd ymm1,QWORD PTR [r14+ymm14*1],ymm0
     6:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
     a:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
     e:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    12:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    16:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    1a:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    1e:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    22:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    26:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    2a:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    2e:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    32:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    36:	c5 fd 54 c0          	vandpd ymm0,ymm0,ymm0
    3a:	c4 41 15 76 ed       	vpcmpeqd ymm13,ymm13,ymm13
    3f:	c4 c1 7d eb c5       	vpor   ymm0,ymm0,ymm13
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM1, [R14];
  VXORPS YMM0, YMM0, YMM0;
  VXORPS YMM14, YMM14, YMM14;
  VGATHERQPD YMM1, [R14+YMM14], YMM0;
  VGATHERQPD YMM0, [R14+YMM14], YMM1

• Show nanoBench command
• Results:
  • MPERF: 10.44
  • APERF: 12.36
  • UOPS: 47.0

Experiment 6 (source registers initialized by an instruction of the same kind)

• Instruction: VGATHERQPD YMM1, [R14+YMM14], YMM0
• Chain instructions: VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPAND YMM0, YMM0, YMM0;VPCMPEQD YMM13, YMM13, YMM13;VPOR YMM0, YMM0, YMM13
• Chain latency: 14
• Code:

     0:	c4 82 fd 93 0c 36    	vgatherqpd ymm1,QWORD PTR [r14+ymm14*1],ymm0
     6:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
     a:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
     e:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    12:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    16:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    1a:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    1e:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    22:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    26:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    2a:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    2e:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    32:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    36:	c5 fd db c0          	vpand  ymm0,ymm0,ymm0
    3a:	c4 41 15 76 ed       	vpcmpeqd ymm13,ymm13,ymm13
    3f:	c4 c1 7d eb c5       	vpor   ymm0,ymm0,ymm13
  

• Init:

  MOV R15, 10000;
  L: VADDPS YMM0, YMM1, YMM1;
  VADDPS YMM0, YMM1, YMM1;
  DEC R15;
  JNZ L;
  VZEROALL;
  MOV RAX, 0x4000000040000000;
  MOV [R14+0], RAX;
  MOV [R14+8], RAX;
  MOV [R14+16], RAX;
  MOV [R14+24], RAX;
  VMOVUPD YMM1, [R14];
  VXORPS YMM0, YMM0, YMM0;
  VXORPS YMM14, YMM14, YMM14;
  VGATHERQPD YMM1, [R14+YMM14], YMM0;
  VGATHERQPD YMM0, [R14+YMM14], YMM1

• Show nanoBench command
• Results:
  • MPERF: 10.14
  • APERF: 12.02
  • UOPS: 47.0