SHA256RNDS2 (XMM, XMM)

Experiment 1

Instruction: SHA256RNDS2 XMM0, XMM1

Code:

   0:	0f 38 cb c1          	sha256rnds2 xmm0,xmm1,xmm0

Init:

VZEROALL;
PXOR XMM0, XMM0;
PXOR XMM1, XMM1

Show nanoBench command
Results:
- MPERF: 3.51
- APERF: 4.0
- UOPS: 1.0

Experiment 2

Instruction: SHA256RNDS2 XMM0, XMM1
Chain instructions: VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0
Chain latency: 7

Code:

   0:	0f 38 cb c1          	sha256rnds2 xmm0,xmm1,xmm0
   4:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
   8:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
   c:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
  10:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
  14:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
  18:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
  1c:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0

Init:

VZEROALL;
PXOR XMM0, XMM0;
PXOR XMM1, XMM1

Show nanoBench command
Results:
- MPERF: 11.5
- APERF: 13.0
- UOPS: 8.0

Experiment 3

Instruction: SHA256RNDS2 XMM0, XMM1
Chain instructions: PSHUFD XMM0, XMM0, 0;PAND XMM0, XMM0;PAND XMM0, XMM0;PAND XMM0, XMM0;PAND XMM0, XMM0;PAND XMM0, XMM0;PAND XMM0, XMM0
Chain latency: 7

Code:

   0:	0f 38 cb c1          	sha256rnds2 xmm0,xmm1,xmm0
   4:	66 0f 70 c0 00       	pshufd xmm0,xmm0,0x0
   9:	66 0f db c0          	pand   xmm0,xmm0
   d:	66 0f db c0          	pand   xmm0,xmm0
  11:	66 0f db c0          	pand   xmm0,xmm0
  15:	66 0f db c0          	pand   xmm0,xmm0
  19:	66 0f db c0          	pand   xmm0,xmm0
  1d:	66 0f db c0          	pand   xmm0,xmm0

Init:

VZEROALL;
PXOR XMM0, XMM0;
PXOR XMM1, XMM1

Show nanoBench command
Results:
- MPERF: 9.63
- APERF: 11.0
- UOPS: 8.0

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

Instruction: SHA256RNDS2 XMM0, XMM1

Code:

   0:	0f 38 cb c1          	sha256rnds2 xmm0,xmm1,xmm0

Init:

VZEROALL;
PXOR XMM0, XMM0;
PXOR XMM1, XMM1;
SHA256RNDS2 XMM0, XMM1;
SHA256RNDS2 XMM1, XMM2

Show nanoBench command
Results:
- MPERF: 3.46
- APERF: 4.0
- UOPS: 1.0

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

Instruction: SHA256RNDS2 XMM0, XMM1
Chain instructions: VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0
Chain latency: 7

Code:

   0:	0f 38 cb c1          	sha256rnds2 xmm0,xmm1,xmm0
   4:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
   8:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
   c:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
  10:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
  14:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
  18:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
  1c:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0

Init:

VZEROALL;
PXOR XMM0, XMM0;
PXOR XMM1, XMM1;
SHA256RNDS2 XMM0, XMM1;
SHA256RNDS2 XMM1, XMM2

Show nanoBench command
Results:
- MPERF: 11.39
- APERF: 13.0
- UOPS: 8.0

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

Instruction: SHA256RNDS2 XMM0, XMM1
Chain instructions: PSHUFD XMM0, XMM0, 0;PAND XMM0, XMM0;PAND XMM0, XMM0;PAND XMM0, XMM0;PAND XMM0, XMM0;PAND XMM0, XMM0;PAND XMM0, XMM0
Chain latency: 7

Code:

   0:	0f 38 cb c1          	sha256rnds2 xmm0,xmm1,xmm0
   4:	66 0f 70 c0 00       	pshufd xmm0,xmm0,0x0
   9:	66 0f db c0          	pand   xmm0,xmm0
   d:	66 0f db c0          	pand   xmm0,xmm0
  11:	66 0f db c0          	pand   xmm0,xmm0
  15:	66 0f db c0          	pand   xmm0,xmm0
  19:	66 0f db c0          	pand   xmm0,xmm0
  1d:	66 0f db c0          	pand   xmm0,xmm0

Init:

VZEROALL;
PXOR XMM0, XMM0;
PXOR XMM1, XMM1;
SHA256RNDS2 XMM0, XMM1;
SHA256RNDS2 XMM1, XMM2

Show nanoBench command
Results:
- MPERF: 9.52
- APERF: 11.0
- UOPS: 8.0

Latency operand 2 → 1: 4

Experiment 1

Instruction: SHA256RNDS2 XMM1, XMM0
Chain instructions: VANDPD XMM0, XMM1, XMM1;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0
Chain latency: 7

Code:

   0:	0f 38 cb c8          	sha256rnds2 xmm1,xmm0,xmm0
   4:	c5 f1 54 c1          	vandpd xmm0,xmm1,xmm1
   8:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
   c:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
  10:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
  14:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
  18:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
  1c:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0

Init:

VZEROALL;
PXOR XMM1, XMM1;
PXOR XMM0, XMM0

Show nanoBench command
Results:
- MPERF: 11.33
- APERF: 13.0
- UOPS: 8.0

Experiment 2

Instruction: SHA256RNDS2 XMM1, XMM0
Chain instructions: PSHUFD XMM0, XMM1, 0;PAND XMM0, XMM0;PAND XMM0, XMM0;PAND XMM0, XMM0;PAND XMM0, XMM0;PAND XMM0, XMM0;PAND XMM0, XMM0
Chain latency: 7

Code:

   0:	0f 38 cb c8          	sha256rnds2 xmm1,xmm0,xmm0
   4:	66 0f 70 c1 00       	pshufd xmm0,xmm1,0x0
   9:	66 0f db c0          	pand   xmm0,xmm0
   d:	66 0f db c0          	pand   xmm0,xmm0
  11:	66 0f db c0          	pand   xmm0,xmm0
  15:	66 0f db c0          	pand   xmm0,xmm0
  19:	66 0f db c0          	pand   xmm0,xmm0
  1d:	66 0f db c0          	pand   xmm0,xmm0

Init:

VZEROALL;
PXOR XMM1, XMM1;
PXOR XMM0, XMM0

Show nanoBench command
Results:
- MPERF: 9.52
- APERF: 11.0
- UOPS: 8.0

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

Instruction: SHA256RNDS2 XMM1, XMM0
Chain instructions: VANDPD XMM0, XMM1, XMM1;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0
Chain latency: 7

Code:

   0:	0f 38 cb c8          	sha256rnds2 xmm1,xmm0,xmm0
   4:	c5 f1 54 c1          	vandpd xmm0,xmm1,xmm1
   8:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
   c:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
  10:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
  14:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
  18:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
  1c:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0

Init:

VZEROALL;
PXOR XMM1, XMM1;
PXOR XMM0, XMM0;
SHA256RNDS2 XMM1, XMM2;
SHA256RNDS2 XMM0, XMM1

Show nanoBench command
Results:
- MPERF: 11.39
- APERF: 13.0
- UOPS: 8.0

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

Instruction: SHA256RNDS2 XMM1, XMM0
Chain instructions: PSHUFD XMM0, XMM1, 0;PAND XMM0, XMM0;PAND XMM0, XMM0;PAND XMM0, XMM0;PAND XMM0, XMM0;PAND XMM0, XMM0;PAND XMM0, XMM0
Chain latency: 7

Code:

   0:	0f 38 cb c8          	sha256rnds2 xmm1,xmm0,xmm0
   4:	66 0f 70 c1 00       	pshufd xmm0,xmm1,0x0
   9:	66 0f db c0          	pand   xmm0,xmm0
   d:	66 0f db c0          	pand   xmm0,xmm0
  11:	66 0f db c0          	pand   xmm0,xmm0
  15:	66 0f db c0          	pand   xmm0,xmm0
  19:	66 0f db c0          	pand   xmm0,xmm0
  1d:	66 0f db c0          	pand   xmm0,xmm0

Init:

VZEROALL;
PXOR XMM1, XMM1;
PXOR XMM0, XMM0;
SHA256RNDS2 XMM1, XMM2;
SHA256RNDS2 XMM0, XMM1

Show nanoBench command
Results:
- MPERF: 9.58
- APERF: 11.0
- UOPS: 8.0

Experiment 5

Instruction: SHA256RNDS2 XMM1, XMM0
Chain instruction: SHA256RNDS2 XMM0, XMM1

Code:

   0:	0f 38 cb c8          	sha256rnds2 xmm1,xmm0,xmm0
   4:	0f 38 cb c1          	sha256rnds2 xmm0,xmm1,xmm0

Init:

VZEROALL;
PXOR XMM1, XMM1;
PXOR XMM0, XMM0

Show nanoBench command
Results:
- MPERF: 7.03
- APERF: 8.0
- UOPS: 2.0

Experiment 6 (with dependency-breaking instructions)

Instruction: SHA256RNDS2 XMM1, XMM0
Chain instructions: SHA256RNDS2 XMM0, XMM1;PXOR XMM1, XMM1

Code:

   0:	0f 38 cb c8          	sha256rnds2 xmm1,xmm0,xmm0
   4:	0f 38 cb c1          	sha256rnds2 xmm0,xmm1,xmm0
   8:	66 0f ef c9          	pxor   xmm1,xmm1

Init:

VZEROALL;
PXOR XMM1, XMM1;
PXOR XMM0, XMM0

Show nanoBench command
Results:
- MPERF: 7.03
- APERF: 8.0
- UOPS: 3.0

Experiment 7 (source registers initialized by an instruction of the same kind)

Instruction: SHA256RNDS2 XMM1, XMM0
Chain instruction: SHA256RNDS2 XMM0, XMM1

Code:

   0:	0f 38 cb c8          	sha256rnds2 xmm1,xmm0,xmm0
   4:	0f 38 cb c1          	sha256rnds2 xmm0,xmm1,xmm0

Init:

VZEROALL;
PXOR XMM1, XMM1;
PXOR XMM0, XMM0;
SHA256RNDS2 XMM1, XMM2;
SHA256RNDS2 XMM0, XMM1

Show nanoBench command
Results:
- MPERF: 7.03
- APERF: 8.0
- UOPS: 2.0

Experiment 8 (source registers initialized by an instruction of the same kind, with dependency-breaking instructions)

Instruction: SHA256RNDS2 XMM1, XMM0
Chain instructions: SHA256RNDS2 XMM0, XMM1;PXOR XMM1, XMM1

Code:

   0:	0f 38 cb c8          	sha256rnds2 xmm1,xmm0,xmm0
   4:	0f 38 cb c1          	sha256rnds2 xmm0,xmm1,xmm0
   8:	66 0f ef c9          	pxor   xmm1,xmm1

Init:

VZEROALL;
PXOR XMM1, XMM1;
PXOR XMM0, XMM0;
SHA256RNDS2 XMM1, XMM2;
SHA256RNDS2 XMM0, XMM1

Show nanoBench command
Results:
- MPERF: 6.97
- APERF: 8.0
- UOPS: 3.0

Latency operand 3 → 1: 4

Experiment 1

Instruction: SHA256RNDS2 XMM1, XMM2
Chain instructions: VANDPD XMM0, XMM1, XMM1;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0
Chain latency: 7

Code:

   0:	0f 38 cb ca          	sha256rnds2 xmm1,xmm2,xmm0
   4:	c5 f1 54 c1          	vandpd xmm0,xmm1,xmm1
   8:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
   c:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
  10:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
  14:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
  18:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
  1c:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0

Init:

VZEROALL;
PXOR XMM1, XMM1;
PXOR XMM2, XMM2;
PXOR XMM0, XMM0

Show nanoBench command
Results:
- MPERF: 11.39
- APERF: 13.0
- UOPS: 8.0

Experiment 2

Instruction: SHA256RNDS2 XMM1, XMM2
Chain instructions: PSHUFD XMM0, XMM1, 0;PAND XMM0, XMM0;PAND XMM0, XMM0;PAND XMM0, XMM0;PAND XMM0, XMM0;PAND XMM0, XMM0;PAND XMM0, XMM0
Chain latency: 7

Code:

   0:	0f 38 cb ca          	sha256rnds2 xmm1,xmm2,xmm0
   4:	66 0f 70 c1 00       	pshufd xmm0,xmm1,0x0
   9:	66 0f db c0          	pand   xmm0,xmm0
   d:	66 0f db c0          	pand   xmm0,xmm0
  11:	66 0f db c0          	pand   xmm0,xmm0
  15:	66 0f db c0          	pand   xmm0,xmm0
  19:	66 0f db c0          	pand   xmm0,xmm0
  1d:	66 0f db c0          	pand   xmm0,xmm0

Init:

VZEROALL;
PXOR XMM1, XMM1;
PXOR XMM2, XMM2;
PXOR XMM0, XMM0

Show nanoBench command
Results:
- MPERF: 9.58
- APERF: 11.0
- UOPS: 8.0

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

Instruction: SHA256RNDS2 XMM1, XMM2
Chain instructions: VANDPD XMM0, XMM1, XMM1;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0;VANDPD XMM0, XMM0, XMM0
Chain latency: 7

Code:

   0:	0f 38 cb ca          	sha256rnds2 xmm1,xmm2,xmm0
   4:	c5 f1 54 c1          	vandpd xmm0,xmm1,xmm1
   8:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
   c:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
  10:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
  14:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
  18:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0
  1c:	c5 f9 54 c0          	vandpd xmm0,xmm0,xmm0

Init:

VZEROALL;
PXOR XMM1, XMM1;
PXOR XMM2, XMM2;
PXOR XMM0, XMM0;
SHA256RNDS2 XMM1, XMM2;
SHA256RNDS2 XMM2, XMM1

Show nanoBench command
Results:
- MPERF: 11.33
- APERF: 13.0
- UOPS: 8.0

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

Instruction: SHA256RNDS2 XMM1, XMM2
Chain instructions: PSHUFD XMM0, XMM1, 0;PAND XMM0, XMM0;PAND XMM0, XMM0;PAND XMM0, XMM0;PAND XMM0, XMM0;PAND XMM0, XMM0;PAND XMM0, XMM0
Chain latency: 7

Code:

   0:	0f 38 cb ca          	sha256rnds2 xmm1,xmm2,xmm0
   4:	66 0f 70 c1 00       	pshufd xmm0,xmm1,0x0
   9:	66 0f db c0          	pand   xmm0,xmm0
   d:	66 0f db c0          	pand   xmm0,xmm0
  11:	66 0f db c0          	pand   xmm0,xmm0
  15:	66 0f db c0          	pand   xmm0,xmm0
  19:	66 0f db c0          	pand   xmm0,xmm0
  1d:	66 0f db c0          	pand   xmm0,xmm0

Init:

VZEROALL;
PXOR XMM1, XMM1;
PXOR XMM2, XMM2;
PXOR XMM0, XMM0;
SHA256RNDS2 XMM1, XMM2;
SHA256RNDS2 XMM2, XMM1

Show nanoBench command
Results:
- MPERF: 9.52
- APERF: 11.0
- UOPS: 8.0

SHA256RNDS2 (XMM, XMM) - Latency

Operands

Latency operand 1 → 1: 4

Latency operand 2 → 1: 4

Latency operand 3 → 1: 4

Latency operand 1 → 1: 4

Experiment 1

Experiment 2

Experiment 3

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

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

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

Latency operand 2 → 1: 4

Experiment 1

Experiment 2

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

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

Experiment 5

Experiment 6 (with dependency-breaking instructions)

Experiment 7 (source registers initialized by an instruction of the same kind)

Experiment 8 (source registers initialized by an instruction of the same kind, with dependency-breaking instructions)

Latency operand 3 → 1: 4

Experiment 1

Experiment 2

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

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