VPBROADCASTW (YMM, XMM) - Latency

Operands

Operand 1 (w): Register (YMM0, YMM1, YMM2, YMM3, YMM4, YMM5, YMM6, YMM7, YMM8, YMM9, YMM10, YMM11, YMM12, YMM13, YMM14, YMM15)
Operand 2 (r): Register (XMM0, XMM1, XMM2, XMM3, XMM4, XMM5, XMM6, XMM7, XMM8, XMM9, XMM10, XMM11, XMM12, XMM13, XMM14, XMM15)

Latency operand 2 → 1: 3

Latency operand 2 → 1: 3

Experiment 1

Instruction: VPBROADCASTW YMM1, XMM0
Chain instructions: VSHUFPD XMM0, XMM1, XMM1, 0;VSHUFPD XMM0, XMM0, XMM0, 0;VSHUFPD XMM0, XMM0, XMM0, 0;VSHUFPD XMM0, XMM0, XMM0, 0;VSHUFPD XMM0, XMM0, XMM0, 0
Chain latency: 5

Code:

   0:	c4 e2 7d 79 c8       	vpbroadcastw ymm1,xmm0
   5:	c5 f1 c6 c1 00       	vshufpd xmm0,xmm1,xmm1,0x0
   a:	c5 f9 c6 c0 00       	vshufpd xmm0,xmm0,xmm0,0x0
   f:	c5 f9 c6 c0 00       	vshufpd xmm0,xmm0,xmm0,0x0
  14:	c5 f9 c6 c0 00       	vshufpd xmm0,xmm0,xmm0,0x0
  19:	c5 f9 c6 c0 00       	vshufpd xmm0,xmm0,xmm0,0x0

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS XMM0, XMM0, XMM0

Show nanoBench command
Results:
- Instructions retired: 6.0
- Core cycles: 8.01
- Reference cycles: 3.64
- UOPS_EXECUTED.THREAD: 6.0

Experiment 2

Instruction: VPBROADCASTW YMM1, XMM0
Chain instructions: VPAND XMM0, XMM1, XMM1;VPAND XMM0, XMM0, XMM0;VPAND XMM0, XMM0, XMM0;VPAND XMM0, XMM0, XMM0;VPAND XMM0, XMM0, XMM0
Chain latency: 5

Code:

   0:	c4 e2 7d 79 c8       	vpbroadcastw ymm1,xmm0
   5:	c5 f1 db c1          	vpand  xmm0,xmm1,xmm1
   9:	c5 f9 db c0          	vpand  xmm0,xmm0,xmm0
   d:	c5 f9 db c0          	vpand  xmm0,xmm0,xmm0
  11:	c5 f9 db c0          	vpand  xmm0,xmm0,xmm0
  15:	c5 f9 db c0          	vpand  xmm0,xmm0,xmm0

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS XMM0, XMM0, XMM0

Show nanoBench command
Results:
- Instructions retired: 6.0
- Core cycles: 8.02
- Reference cycles: 3.81
- UOPS_EXECUTED.THREAD: 6.0