VMULPS (YMM, YMM, M256) - Port Usage

With blocking instructions for port '23A':

Code:

   0:	45 8b 46 40          	mov    r8d,DWORD PTR [r14+0x40]
   4:	45 8b 4e 44          	mov    r9d,DWORD PTR [r14+0x44]
   8:	45 8b 56 48          	mov    r10d,DWORD PTR [r14+0x48]
   c:	45 8b 5e 4c          	mov    r11d,DWORD PTR [r14+0x4c]
  10:	45 8b 66 50          	mov    r12d,DWORD PTR [r14+0x50]
  14:	41 8b 5e 54          	mov    ebx,DWORD PTR [r14+0x54]
  18:	41 8b 4e 58          	mov    ecx,DWORD PTR [r14+0x58]
  1c:	41 8b 56 5c          	mov    edx,DWORD PTR [r14+0x5c]
  20:	45 8b 46 40          	mov    r8d,DWORD PTR [r14+0x40]
  24:	45 8b 4e 44          	mov    r9d,DWORD PTR [r14+0x44]
  28:	c4 c1 74 59 06       	vmulps ymm0,ymm1,YMMWORD PTR [r14]

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]

Show nanoBench command
Results:
- Instructions retired: 11.0
- Core cycles: 3.76
- Reference cycles: 2.88
- UOPS_PORT_23A: 11.0

⇨ One μop that can only use port '23A'

With blocking instructions for ports {'0', '1'}:

Code:

   0:	c4 e2 61 de d4       	vaesdec xmm2,xmm3,xmm4
   5:	c4 e2 61 de ec       	vaesdec xmm5,xmm3,xmm4
   a:	c4 e2 61 de f4       	vaesdec xmm6,xmm3,xmm4
   f:	c4 e2 61 de fc       	vaesdec xmm7,xmm3,xmm4
  14:	c4 62 61 de c4       	vaesdec xmm8,xmm3,xmm4
  19:	c4 62 61 de cc       	vaesdec xmm9,xmm3,xmm4
  1e:	c4 62 61 de d4       	vaesdec xmm10,xmm3,xmm4
  23:	c4 62 61 de dc       	vaesdec xmm11,xmm3,xmm4
  28:	c4 62 61 de e4       	vaesdec xmm12,xmm3,xmm4
  2d:	c4 e2 61 de d4       	vaesdec xmm2,xmm3,xmm4
  32:	c4 c1 74 59 06       	vmulps ymm0,ymm1,YMMWORD PTR [r14]

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS XMM3, XMM3, XMM3;
VXORPS XMM4, XMM4, XMM4;
MOV RAX, 0x4000000040000000;
MOV [R14+0], RAX;
MOV [R14+8], RAX;
MOV [R14+16], RAX;
MOV [R14+24], RAX;
VMOVUPD YMM1, [R14]

Show nanoBench command
Results:
- Instructions retired: 11.0
- Core cycles: 5.55
- Reference cycles: 4.0
- UOPS_PORT_0: 5.49
- UOPS_PORT_1: 5.51

⇨ One μop that can only use ports {'0', '1'}

With an indexed addressing mode

With blocking instructions for port '23A':

Code:

   0:	45 8b 46 40          	mov    r8d,DWORD PTR [r14+0x40]
   4:	45 8b 4e 44          	mov    r9d,DWORD PTR [r14+0x44]
   8:	45 8b 56 48          	mov    r10d,DWORD PTR [r14+0x48]
   c:	45 8b 5e 4c          	mov    r11d,DWORD PTR [r14+0x4c]
  10:	45 8b 66 50          	mov    r12d,DWORD PTR [r14+0x50]
  14:	41 8b 5e 54          	mov    ebx,DWORD PTR [r14+0x54]
  18:	41 8b 4e 58          	mov    ecx,DWORD PTR [r14+0x58]
  1c:	41 8b 56 5c          	mov    edx,DWORD PTR [r14+0x5c]
  20:	45 8b 46 40          	mov    r8d,DWORD PTR [r14+0x40]
  24:	45 8b 4e 44          	mov    r9d,DWORD PTR [r14+0x44]
  28:	c4 81 74 59 04 2e    	vmulps ymm0,ymm1,YMMWORD PTR [r14+r13*1]

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];
XOR R13, R13

Show nanoBench command
Results:
- Instructions retired: 11.0
- Core cycles: 3.76
- Reference cycles: 2.88
- UOPS_PORT_23A: 11.0

⇨ One μop that can only use port '23A'

With blocking instructions for ports {'0', '1'}:

Code:

   0:	c4 e2 61 de d4       	vaesdec xmm2,xmm3,xmm4
   5:	c4 e2 61 de ec       	vaesdec xmm5,xmm3,xmm4
   a:	c4 e2 61 de f4       	vaesdec xmm6,xmm3,xmm4
   f:	c4 e2 61 de fc       	vaesdec xmm7,xmm3,xmm4
  14:	c4 62 61 de c4       	vaesdec xmm8,xmm3,xmm4
  19:	c4 62 61 de cc       	vaesdec xmm9,xmm3,xmm4
  1e:	c4 62 61 de d4       	vaesdec xmm10,xmm3,xmm4
  23:	c4 62 61 de dc       	vaesdec xmm11,xmm3,xmm4
  28:	c4 62 61 de e4       	vaesdec xmm12,xmm3,xmm4
  2d:	c4 e2 61 de d4       	vaesdec xmm2,xmm3,xmm4
  32:	c4 81 74 59 04 2e    	vmulps ymm0,ymm1,YMMWORD PTR [r14+r13*1]

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS XMM3, XMM3, XMM3;
VXORPS XMM4, XMM4, XMM4;
MOV RAX, 0x4000000040000000;
MOV [R14+0], RAX;
MOV [R14+8], RAX;
MOV [R14+16], RAX;
MOV [R14+24], RAX;
VMOVUPD YMM1, [R14];
XOR R13, R13

Show nanoBench command
Results:
- Instructions retired: 11.0
- Core cycles: 5.55
- Reference cycles: 4.32
- UOPS_PORT_0: 5.5
- UOPS_PORT_1: 5.5

⇨ One μop that can only use ports {'0', '1'}