VAESENC (XMM, XMM, XMM) - Port Usage

With blocking instructions for port '5':

Code:

   0:	41 0f 6e c0          	movd   mm0,r8d
   4:	41 0f 6e c8          	movd   mm1,r8d
   8:	41 0f 6e d0          	movd   mm2,r8d
   c:	41 0f 6e d8          	movd   mm3,r8d
  10:	41 0f 6e e0          	movd   mm4,r8d
  14:	41 0f 6e e8          	movd   mm5,r8d
  18:	41 0f 6e f0          	movd   mm6,r8d
  1c:	41 0f 6e f8          	movd   mm7,r8d
  20:	41 0f 6e c0          	movd   mm0,r8d
  24:	41 0f 6e c8          	movd   mm1,r8d
  28:	c4 e2 71 dc c2       	vaesenc xmm0,xmm1,xmm2

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS XMM1, XMM1, XMM1;
VXORPS XMM2, XMM2, XMM2

Show nanoBench command
Results:
- Instructions retired: 11.0
- Core cycles: 11.17
- Reference cycles: 10.83
- UOPS_PORT_5: 11.0

⇨ One μop that can only use port '5'

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

Code:

   0:	45 8d 06             	lea    r8d,[r14]
   3:	45 8d 0e             	lea    r9d,[r14]
   6:	45 8d 16             	lea    r10d,[r14]
   9:	45 8d 1e             	lea    r11d,[r14]
   c:	45 8d 26             	lea    r12d,[r14]
   f:	41 8d 1e             	lea    ebx,[r14]
  12:	41 8d 0e             	lea    ecx,[r14]
  15:	41 8d 16             	lea    edx,[r14]
  18:	45 8d 06             	lea    r8d,[r14]
  1b:	45 8d 0e             	lea    r9d,[r14]
  1e:	c4 e2 71 dc c2       	vaesenc xmm0,xmm1,xmm2

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS XMM1, XMM1, XMM1;
VXORPS XMM2, XMM2, XMM2

Show nanoBench command
Results:
- Instructions retired: 11.0
- Core cycles: 5.05
- Reference cycles: 5.44
- UOPS_PORT_0: 5.0
- UOPS_PORT_1: 4.99

With blocking instructions for ports {'0', '1', '5'}:

Code:

   0:	41 b0 00             	mov    r8b,0x0
   3:	41 b1 00             	mov    r9b,0x0
   6:	41 b2 00             	mov    r10b,0x0
   9:	41 b3 00             	mov    r11b,0x0
   c:	41 b4 00             	mov    r12b,0x0
   f:	b3 00                	mov    bl,0x0
  11:	b1 00                	mov    cl,0x0
  13:	b2 00                	mov    dl,0x0
  15:	41 b0 00             	mov    r8b,0x0
  18:	41 b1 00             	mov    r9b,0x0
  1b:	c4 e2 71 dc c2       	vaesenc xmm0,xmm1,xmm2

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS XMM1, XMM1, XMM1;
VXORPS XMM2, XMM2, XMM2

Show nanoBench command
Results:
- Instructions retired: 11.0
- Core cycles: 4.16
- Reference cycles: 4.53
- UOPS_PORT_5: 3.98
- UOPS_PORT_0: 4.01
- UOPS_PORT_1: 4.01

⇨ One μop that can only use ports {'0', '1', '5'}