VPCOMPRESSB (ZMM, K, ZMM)

Experiment 1

Instruction: VPCOMPRESSB ZMM0 {K1}, ZMM1

Code:

   0:	62 f2 7d 49 63 c8    	vpcompressb zmm0{k1},zmm1

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS ZMM0, ZMM0, ZMM0;
VXORPS ZMM1, ZMM1, ZMM1

Show nanoBench command
Results:
- MPERF: 4.47
- APERF: 5.03
- UOPS: 2.0

Experiment 2

Instruction: VPCOMPRESSB ZMM0 {K1}, ZMM1
Chain instructions: VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0
Chain latency: 9

Code:

   0:	62 f2 7d 49 63 c8    	vpcompressb zmm0{k1},zmm1
   6:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
   c:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  12:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  18:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  1e:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  24:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  2a:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  30:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  36:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS ZMM0, ZMM0, ZMM0;
VXORPS ZMM1, ZMM1, ZMM1

Show nanoBench command
Results:
- MPERF: 15.98
- APERF: 18.52
- UOPS: 11.0

Experiment 3

Instruction: VPCOMPRESSB ZMM0 {K1}, ZMM1
Chain instructions: VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0
Chain latency: 9

Code:

   0:	62 f2 7d 49 63 c8    	vpcompressb zmm0{k1},zmm1
   6:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
   c:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  12:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  18:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  1e:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  24:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  2a:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  30:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  36:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS ZMM0, ZMM0, ZMM0;
VXORPS ZMM1, ZMM1, ZMM1

Show nanoBench command
Results:
- MPERF: 14.96
- APERF: 17.3
- UOPS: 11.0

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

Instruction: VPCOMPRESSB ZMM0 {K1}, ZMM1

Code:

   0:	62 f2 7d 49 63 c8    	vpcompressb zmm0{k1},zmm1

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS ZMM0, ZMM0, ZMM0;
VXORPS ZMM1, ZMM1, ZMM1;
VPCOMPRESSB ZMM0  {K1}, ZMM1;
VPCOMPRESSB ZMM1  {K1}, ZMM0

Show nanoBench command
Results:
- MPERF: 4.54
- APERF: 5.05
- UOPS: 2.0

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

Instruction: VPCOMPRESSB ZMM0 {K1}, ZMM1
Chain instructions: VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0
Chain latency: 9

Code:

   0:	62 f2 7d 49 63 c8    	vpcompressb zmm0{k1},zmm1
   6:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
   c:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  12:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  18:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  1e:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  24:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  2a:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  30:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  36:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS ZMM0, ZMM0, ZMM0;
VXORPS ZMM1, ZMM1, ZMM1;
VPCOMPRESSB ZMM0  {K1}, ZMM1;
VPCOMPRESSB ZMM1  {K1}, ZMM0

Show nanoBench command
Results:
- MPERF: 14.73
- APERF: 16.99
- UOPS: 11.0

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

Instruction: VPCOMPRESSB ZMM0 {K1}, ZMM1
Chain instructions: VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0
Chain latency: 9

Code:

   0:	62 f2 7d 49 63 c8    	vpcompressb zmm0{k1},zmm1
   6:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
   c:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  12:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  18:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  1e:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  24:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  2a:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  30:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  36:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS ZMM0, ZMM0, ZMM0;
VXORPS ZMM1, ZMM1, ZMM1;
VPCOMPRESSB ZMM0  {K1}, ZMM1;
VPCOMPRESSB ZMM1  {K1}, ZMM0

Show nanoBench command
Results:
- MPERF: 16.14
- APERF: 18.52
- UOPS: 11.0

Latency operand 2 → 1: 9

Experiment 1

Instruction: VPCOMPRESSB ZMM0 {K1}, ZMM1
Chain instruction: VPMOVQ2M K1, ZMM0
Chain latency: 5

Code:

   0:	62 f2 7d 49 63 c8    	vpcompressb zmm0{k1},zmm1
   6:	62 f2 fe 48 39 c8    	vpmovq2m k1,zmm0

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS ZMM0, ZMM0, ZMM0;
VXORPS ZMM1, ZMM1, ZMM1

Show nanoBench command
Results:
- MPERF: 11.99
- APERF: 14.0
- UOPS: 3.0

Experiment 2 (with dependency-breaking instructions)

Instruction: VPCOMPRESSB ZMM0 {K1}, ZMM1
Chain instructions: VPMOVQ2M K1, ZMM0;;VXORPS ZMM0, ZMM0, ZMM0
Chain latency: 5

Code:

   0:	62 f2 7d 49 63 c8    	vpcompressb zmm0{k1},zmm1
   6:	62 f2 fe 48 39 c8    	vpmovq2m k1,zmm0
   c:	62 f1 7c 48 57 c0    	vxorps zmm0,zmm0,zmm0

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS ZMM0, ZMM0, ZMM0;
VXORPS ZMM1, ZMM1, ZMM1

Show nanoBench command
Results:
- MPERF: 11.91
- APERF: 14.0
- UOPS: 4.0

Experiment 3

Instruction: VPCOMPRESSB ZMM0 {K1}, ZMM1
Chain instruction: VPTESTNMQ K1 {K1}, ZMM0, ZMM0
Chain latency: 5

Code:

   0:	62 f2 7d 49 63 c8    	vpcompressb zmm0{k1},zmm1
   6:	62 f2 fe 49 27 c8    	vptestnmq k1{k1},zmm0,zmm0

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS ZMM0, ZMM0, ZMM0;
VXORPS ZMM1, ZMM1, ZMM1

Show nanoBench command
Results:
- MPERF: 11.99
- APERF: 14.0
- UOPS: 3.0

Experiment 4 (with dependency-breaking instructions)

Instruction: VPCOMPRESSB ZMM0 {K1}, ZMM1
Chain instructions: VPTESTNMQ K1 {K1}, ZMM0, ZMM0;;VXORPS ZMM0, ZMM0, ZMM0
Chain latency: 5

Code:

   0:	62 f2 7d 49 63 c8    	vpcompressb zmm0{k1},zmm1
   6:	62 f2 fe 49 27 c8    	vptestnmq k1{k1},zmm0,zmm0
   c:	62 f1 7c 48 57 c0    	vxorps zmm0,zmm0,zmm0

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS ZMM0, ZMM0, ZMM0;
VXORPS ZMM1, ZMM1, ZMM1

Show nanoBench command
Results:
- MPERF: 12.06
- APERF: 14.0
- UOPS: 4.0

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

Instruction: VPCOMPRESSB ZMM0 {K1}, ZMM1
Chain instruction: VPMOVQ2M K1, ZMM0
Chain latency: 5

Code:

   0:	62 f2 7d 49 63 c8    	vpcompressb zmm0{k1},zmm1
   6:	62 f2 fe 48 39 c8    	vpmovq2m k1,zmm0

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS ZMM0, ZMM0, ZMM0;
VXORPS ZMM1, ZMM1, ZMM1;
VPCOMPRESSB ZMM0  {K1}, ZMM1;
VPCOMPRESSB ZMM1  {K1}, ZMM0

Show nanoBench command
Results:
- MPERF: 11.99
- APERF: 14.0
- UOPS: 3.0

Experiment 6 (source registers initialized by an instruction of the same kind, with dependency-breaking instructions)

Instruction: VPCOMPRESSB ZMM0 {K1}, ZMM1
Chain instructions: VPMOVQ2M K1, ZMM0;;VXORPS ZMM0, ZMM0, ZMM0
Chain latency: 5

Code:

   0:	62 f2 7d 49 63 c8    	vpcompressb zmm0{k1},zmm1
   6:	62 f2 fe 48 39 c8    	vpmovq2m k1,zmm0
   c:	62 f1 7c 48 57 c0    	vxorps zmm0,zmm0,zmm0

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS ZMM0, ZMM0, ZMM0;
VXORPS ZMM1, ZMM1, ZMM1;
VPCOMPRESSB ZMM0  {K1}, ZMM1;
VPCOMPRESSB ZMM1  {K1}, ZMM0

Show nanoBench command
Results:
- MPERF: 12.06
- APERF: 14.0
- UOPS: 4.0

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

Instruction: VPCOMPRESSB ZMM0 {K1}, ZMM1
Chain instruction: VPTESTNMQ K1 {K1}, ZMM0, ZMM0
Chain latency: 5

Code:

   0:	62 f2 7d 49 63 c8    	vpcompressb zmm0{k1},zmm1
   6:	62 f2 fe 49 27 c8    	vptestnmq k1{k1},zmm0,zmm0

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS ZMM0, ZMM0, ZMM0;
VXORPS ZMM1, ZMM1, ZMM1;
VPCOMPRESSB ZMM0  {K1}, ZMM1;
VPCOMPRESSB ZMM1  {K1}, ZMM0

Show nanoBench command
Results:
- MPERF: 11.99
- APERF: 14.0
- UOPS: 3.0

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

Instruction: VPCOMPRESSB ZMM0 {K1}, ZMM1
Chain instructions: VPTESTNMQ K1 {K1}, ZMM0, ZMM0;;VXORPS ZMM0, ZMM0, ZMM0
Chain latency: 5

Code:

   0:	62 f2 7d 49 63 c8    	vpcompressb zmm0{k1},zmm1
   6:	62 f2 fe 49 27 c8    	vptestnmq k1{k1},zmm0,zmm0
   c:	62 f1 7c 48 57 c0    	vxorps zmm0,zmm0,zmm0

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS ZMM0, ZMM0, ZMM0;
VXORPS ZMM1, ZMM1, ZMM1;
VPCOMPRESSB ZMM0  {K1}, ZMM1;
VPCOMPRESSB ZMM1  {K1}, ZMM0

Show nanoBench command
Results:
- MPERF: 12.06
- APERF: 14.0
- UOPS: 4.0

Latency operand 3 → 1: 8

Experiment 1

Instruction: VPCOMPRESSB ZMM1 {K1}, ZMM0
Chain instructions: VANDPD ZMM0, ZMM1, ZMM1;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0
Chain latency: 9

Code:

   0:	62 f2 7d 49 63 c1    	vpcompressb zmm1{k1},zmm0
   6:	62 f1 f5 48 54 c1    	vandpd zmm0,zmm1,zmm1
   c:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  12:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  18:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  1e:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  24:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  2a:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  30:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  36:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS ZMM1, ZMM1, ZMM1;
VXORPS ZMM0, ZMM0, ZMM0

Show nanoBench command
Results:
- MPERF: 15.12
- APERF: 17.5
- UOPS: 11.0

Experiment 2 (with dependency-breaking instructions)

Instruction: VPCOMPRESSB ZMM1 {K1}, ZMM0
Chain instructions: VANDPD ZMM0, ZMM1, ZMM1;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;;VXORPS ZMM1, ZMM1, ZMM1
Chain latency: 9

Code:

   0:	62 f2 7d 49 63 c1    	vpcompressb zmm1{k1},zmm0
   6:	62 f1 f5 48 54 c1    	vandpd zmm0,zmm1,zmm1
   c:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  12:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  18:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  1e:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  24:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  2a:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  30:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  36:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  3c:	62 f1 74 48 57 c9    	vxorps zmm1,zmm1,zmm1

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS ZMM1, ZMM1, ZMM1;
VXORPS ZMM0, ZMM0, ZMM0

Show nanoBench command
Results:
- MPERF: 15.12
- APERF: 17.5
- UOPS: 12.0

Experiment 3

Instruction: VPCOMPRESSB ZMM1 {K1}, ZMM0
Chain instructions: VPANDD ZMM0, ZMM1, ZMM1;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0
Chain latency: 9

Code:

   0:	62 f2 7d 49 63 c1    	vpcompressb zmm1{k1},zmm0
   6:	62 f1 75 48 db c1    	vpandd zmm0,zmm1,zmm1
   c:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  12:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  18:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  1e:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  24:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  2a:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  30:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  36:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS ZMM1, ZMM1, ZMM1;
VXORPS ZMM0, ZMM0, ZMM0

Show nanoBench command
Results:
- MPERF: 15.04
- APERF: 17.5
- UOPS: 11.0

Experiment 4 (with dependency-breaking instructions)

Instruction: VPCOMPRESSB ZMM1 {K1}, ZMM0
Chain instructions: VPANDD ZMM0, ZMM1, ZMM1;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;;VXORPS ZMM1, ZMM1, ZMM1
Chain latency: 9

Code:

   0:	62 f2 7d 49 63 c1    	vpcompressb zmm1{k1},zmm0
   6:	62 f1 75 48 db c1    	vpandd zmm0,zmm1,zmm1
   c:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  12:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  18:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  1e:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  24:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  2a:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  30:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  36:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  3c:	62 f1 74 48 57 c9    	vxorps zmm1,zmm1,zmm1

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS ZMM1, ZMM1, ZMM1;
VXORPS ZMM0, ZMM0, ZMM0

Show nanoBench command
Results:
- MPERF: 14.88
- APERF: 17.3
- UOPS: 12.0

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

Instruction: VPCOMPRESSB ZMM1 {K1}, ZMM0
Chain instructions: VANDPD ZMM0, ZMM1, ZMM1;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0
Chain latency: 9

Code:

   0:	62 f2 7d 49 63 c1    	vpcompressb zmm1{k1},zmm0
   6:	62 f1 f5 48 54 c1    	vandpd zmm0,zmm1,zmm1
   c:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  12:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  18:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  1e:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  24:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  2a:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  30:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  36:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS ZMM1, ZMM1, ZMM1;
VXORPS ZMM0, ZMM0, ZMM0;
VPCOMPRESSB ZMM1  {K1}, ZMM0;
VPCOMPRESSB ZMM0  {K1}, ZMM1

Show nanoBench command
Results:
- MPERF: 16.22
- APERF: 18.52
- UOPS: 11.0

Experiment 6 (source registers initialized by an instruction of the same kind, with dependency-breaking instructions)

Instruction: VPCOMPRESSB ZMM1 {K1}, ZMM0
Chain instructions: VANDPD ZMM0, ZMM1, ZMM1;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;VANDPD ZMM0, ZMM0, ZMM0;;VXORPS ZMM1, ZMM1, ZMM1
Chain latency: 9

Code:

   0:	62 f2 7d 49 63 c1    	vpcompressb zmm1{k1},zmm0
   6:	62 f1 f5 48 54 c1    	vandpd zmm0,zmm1,zmm1
   c:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  12:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  18:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  1e:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  24:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  2a:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  30:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  36:	62 f1 fd 48 54 c0    	vandpd zmm0,zmm0,zmm0
  3c:	62 f1 74 48 57 c9    	vxorps zmm1,zmm1,zmm1

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS ZMM1, ZMM1, ZMM1;
VXORPS ZMM0, ZMM0, ZMM0;
VPCOMPRESSB ZMM1  {K1}, ZMM0;
VPCOMPRESSB ZMM0  {K1}, ZMM1

Show nanoBench command
Results:
- MPERF: 16.14
- APERF: 18.52
- UOPS: 12.0

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

Instruction: VPCOMPRESSB ZMM1 {K1}, ZMM0
Chain instructions: VPANDD ZMM0, ZMM1, ZMM1;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0
Chain latency: 9

Code:

   0:	62 f2 7d 49 63 c1    	vpcompressb zmm1{k1},zmm0
   6:	62 f1 75 48 db c1    	vpandd zmm0,zmm1,zmm1
   c:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  12:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  18:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  1e:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  24:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  2a:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  30:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  36:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS ZMM1, ZMM1, ZMM1;
VXORPS ZMM0, ZMM0, ZMM0;
VPCOMPRESSB ZMM1  {K1}, ZMM0;
VPCOMPRESSB ZMM0  {K1}, ZMM1

Show nanoBench command
Results:
- MPERF: 16.06
- APERF: 18.52
- UOPS: 11.0

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

Instruction: VPCOMPRESSB ZMM1 {K1}, ZMM0
Chain instructions: VPANDD ZMM0, ZMM1, ZMM1;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;VPANDD ZMM0, ZMM0, ZMM0;;VXORPS ZMM1, ZMM1, ZMM1
Chain latency: 9

Code:

   0:	62 f2 7d 49 63 c1    	vpcompressb zmm1{k1},zmm0
   6:	62 f1 75 48 db c1    	vpandd zmm0,zmm1,zmm1
   c:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  12:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  18:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  1e:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  24:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  2a:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  30:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  36:	62 f1 7d 48 db c0    	vpandd zmm0,zmm0,zmm0
  3c:	62 f1 74 48 57 c9    	vxorps zmm1,zmm1,zmm1

Init:

MOV R15, 10000;
L: VADDPS ZMM0, ZMM1, ZMM1;
VADDPS ZMM0, ZMM1, ZMM1;
DEC R15;
JNZ L;
VZEROALL;
VXORPS ZMM1, ZMM1, ZMM1;
VXORPS ZMM0, ZMM0, ZMM0;
VPCOMPRESSB ZMM1  {K1}, ZMM0;
VPCOMPRESSB ZMM0  {K1}, ZMM1

Show nanoBench command
Results:
- MPERF: 15.98
- APERF: 18.52
- UOPS: 12.0

VPCOMPRESSB (ZMM, K, ZMM) - Latency

Operands

Latency operand 1 → 1: 5

Latency operand 2 → 1: 9

Latency operand 3 → 1: 8

Latency operand 1 → 1: 5

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: 9

Experiment 1

Experiment 2 (with dependency-breaking instructions)

Experiment 3

Experiment 4 (with dependency-breaking instructions)

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

Experiment 6 (source registers initialized by an instruction of the same kind, 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: 8

Experiment 1

Experiment 2 (with dependency-breaking instructions)

Experiment 3

Experiment 4 (with dependency-breaking instructions)

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

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