VCVTPS2PD (ZMM, YMM) - Port Usage

With blocking instructions for port '0':

Code:

   0:	41 0f 7e c0          	movd   r8d,mm0
   4:	41 0f 7e c1          	movd   r9d,mm0
   8:	41 0f 7e c2          	movd   r10d,mm0
   c:	41 0f 7e c3          	movd   r11d,mm0
  10:	41 0f 7e c4          	movd   r12d,mm0
  14:	0f 7e c3             	movd   ebx,mm0
  17:	0f 7e c1             	movd   ecx,mm0
  1a:	0f 7e c2             	movd   edx,mm0
  1d:	0f 7e c0             	movd   eax,mm0
  20:	41 0f 7e c0          	movd   r8d,mm0
  24:	62 f1 7c 48 5a c1    	vcvtps2pd zmm0,ymm1

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
DEC R15;
JNZ L;
PXOR MM0, MM0;
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: 10.02
- Reference cycles: 7.07
- UOPS_PORT_0: 10.01

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:	62 f1 7c 48 5a c1    	vcvtps2pd zmm0,ymm1

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
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: 11.06
- Reference cycles: 6.93
- UOPS_PORT_5B: 11.01
- UOPS_PORT_5B>=2: 0.0

⇨ One μop that can only use port '5'

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:	62 f1 7c 48 5a c1    	vcvtps2pd zmm0,ymm1

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
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: 9.98
- Reference cycles: 6.4
- UOPS_PORT_1: 0.06
- UOPS_PORT_0: 9.94

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

Code:

   0:	0f 6f c1             	movq   mm0,mm1
   3:	0f 6f d1             	movq   mm2,mm1
   6:	0f 6f d9             	movq   mm3,mm1
   9:	0f 6f e1             	movq   mm4,mm1
   c:	0f 6f e9             	movq   mm5,mm1
   f:	0f 6f f1             	movq   mm6,mm1
  12:	0f 6f f9             	movq   mm7,mm1
  15:	0f 6f c1             	movq   mm0,mm1
  18:	0f 6f d1             	movq   mm2,mm1
  1b:	0f 6f d9             	movq   mm3,mm1
  1e:	62 f1 7c 48 5a c1    	vcvtps2pd zmm0,ymm1

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
DEC R15;
JNZ L;
PXOR MM1, MM1;
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: 6.07
- Reference cycles: 4.0
- UOPS_PORT_0: 5.99
- UOPS_PORT_5B: 6.01
- UOPS_PORT_5B>=2: 0.0

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