VCVTDQ2PS (YMM, YMM)

With unroll_count=500 and no inner loop

Code:

   0:	c5 fc 5b c1          	vcvtdq2ps ymm0,ymm1

Init:

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

Show nanoBench command
Results:
- MPERF: 1.73
- APERF: 2.0
- UOPS: 2.0
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 2.0
- DIV_CYCLES: 0.0

With loop_count=1000 and unroll_count=10

Code:

   0:	c5 fc 5b c1          	vcvtdq2ps ymm0,ymm1

Init:

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

Show nanoBench command
Results:
- MPERF: 1.74
- APERF: 2.0
- UOPS: 2.2
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 1.99
- DIV_CYCLES: 0.0

With loop_count=100 and unroll_count=100

Code:

   0:	c5 fc 5b c1          	vcvtdq2ps ymm0,ymm1

Init:

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

Show nanoBench command
Results:
- MPERF: 1.74
- APERF: 2.0
- UOPS: 2.02
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 1.99
- DIV_CYCLES: 0.0

With 4 independent instructions

With unroll_count=200 and no inner loop

Code:

   0:	c5 fc 5b c1          	vcvtdq2ps ymm0,ymm1
   4:	c5 fc 5b d1          	vcvtdq2ps ymm2,ymm1
   8:	c5 fc 5b d9          	vcvtdq2ps ymm3,ymm1
   c:	c5 fc 5b e1          	vcvtdq2ps ymm4,ymm1

Init:

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

Show nanoBench command
Results:
- MPERF: 6.97
- APERF: 8.0
- UOPS: 8.0
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 8.0
- DIV_CYCLES: 0.0

With loop_count=1000 and unroll_count=2

Code:

   0:	c5 fc 5b c1          	vcvtdq2ps ymm0,ymm1
   4:	c5 fc 5b d1          	vcvtdq2ps ymm2,ymm1
   8:	c5 fc 5b d9          	vcvtdq2ps ymm3,ymm1
   c:	c5 fc 5b e1          	vcvtdq2ps ymm4,ymm1

Init:

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

Show nanoBench command
Results:
- MPERF: 6.98
- APERF: 8.0
- UOPS: 9.0
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 7.97
- DIV_CYCLES: 0.0

With loop_count=100 and unroll_count=20

Code:

   0:	c5 fc 5b c1          	vcvtdq2ps ymm0,ymm1
   4:	c5 fc 5b d1          	vcvtdq2ps ymm2,ymm1
   8:	c5 fc 5b d9          	vcvtdq2ps ymm3,ymm1
   c:	c5 fc 5b e1          	vcvtdq2ps ymm4,ymm1

Init:

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

Show nanoBench command
Results:
- MPERF: 6.97
- APERF: 8.0
- UOPS: 8.1
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 7.97
- DIV_CYCLES: 0.0

With 8 independent instructions

With unroll_count=100 and no inner loop

Code:

   0:	c5 fc 5b c1          	vcvtdq2ps ymm0,ymm1
   4:	c5 fc 5b d1          	vcvtdq2ps ymm2,ymm1
   8:	c5 fc 5b d9          	vcvtdq2ps ymm3,ymm1
   c:	c5 fc 5b e1          	vcvtdq2ps ymm4,ymm1
  10:	c5 fc 5b e9          	vcvtdq2ps ymm5,ymm1
  14:	c5 fc 5b f1          	vcvtdq2ps ymm6,ymm1
  18:	c5 fc 5b f9          	vcvtdq2ps ymm7,ymm1
  1c:	c5 7c 5b c1          	vcvtdq2ps ymm8,ymm1

Init:

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

Show nanoBench command
Results:
- MPERF: 13.94
- APERF: 16.0
- UOPS: 16.0
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 16.0
- DIV_CYCLES: 0.0

With loop_count=1000 and unroll_count=1

Code:

   0:	c5 fc 5b c1          	vcvtdq2ps ymm0,ymm1
   4:	c5 fc 5b d1          	vcvtdq2ps ymm2,ymm1
   8:	c5 fc 5b d9          	vcvtdq2ps ymm3,ymm1
   c:	c5 fc 5b e1          	vcvtdq2ps ymm4,ymm1
  10:	c5 fc 5b e9          	vcvtdq2ps ymm5,ymm1
  14:	c5 fc 5b f1          	vcvtdq2ps ymm6,ymm1
  18:	c5 fc 5b f9          	vcvtdq2ps ymm7,ymm1
  1c:	c5 7c 5b c1          	vcvtdq2ps ymm8,ymm1

Init:

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

Show nanoBench command
Results:
- MPERF: 13.95
- APERF: 16.0
- UOPS: 18.0
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 15.94
- DIV_CYCLES: 0.0

With loop_count=100 and unroll_count=10

Code:

   0:	c5 fc 5b c1          	vcvtdq2ps ymm0,ymm1
   4:	c5 fc 5b d1          	vcvtdq2ps ymm2,ymm1
   8:	c5 fc 5b d9          	vcvtdq2ps ymm3,ymm1
   c:	c5 fc 5b e1          	vcvtdq2ps ymm4,ymm1
  10:	c5 fc 5b e9          	vcvtdq2ps ymm5,ymm1
  14:	c5 fc 5b f1          	vcvtdq2ps ymm6,ymm1
  18:	c5 fc 5b f9          	vcvtdq2ps ymm7,ymm1
  1c:	c5 7c 5b c1          	vcvtdq2ps ymm8,ymm1

Init:

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

Show nanoBench command
Results:
- MPERF: 13.95
- APERF: 16.0
- UOPS: 16.2
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 15.94
- DIV_CYCLES: 0.0

With 12 independent instructions

With unroll_count=100 and no inner loop

Code:

   0:	c5 fc 5b c1          	vcvtdq2ps ymm0,ymm1
   4:	c5 fc 5b d1          	vcvtdq2ps ymm2,ymm1
   8:	c5 fc 5b d9          	vcvtdq2ps ymm3,ymm1
   c:	c5 fc 5b e1          	vcvtdq2ps ymm4,ymm1
  10:	c5 fc 5b e9          	vcvtdq2ps ymm5,ymm1
  14:	c5 fc 5b f1          	vcvtdq2ps ymm6,ymm1
  18:	c5 fc 5b f9          	vcvtdq2ps ymm7,ymm1
  1c:	c5 7c 5b c1          	vcvtdq2ps ymm8,ymm1
  20:	c5 7c 5b c9          	vcvtdq2ps ymm9,ymm1
  24:	c5 7c 5b d1          	vcvtdq2ps ymm10,ymm1
  28:	c5 7c 5b d9          	vcvtdq2ps ymm11,ymm1
  2c:	c5 7c 5b e1          	vcvtdq2ps ymm12,ymm1

Init:

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

Show nanoBench command
Results:
- MPERF: 20.91
- APERF: 24.0
- UOPS: 24.0
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 24.0
- DIV_CYCLES: 0.0

With loop_count=1000 and unroll_count=1

Code:

   0:	c5 fc 5b c1          	vcvtdq2ps ymm0,ymm1
   4:	c5 fc 5b d1          	vcvtdq2ps ymm2,ymm1
   8:	c5 fc 5b d9          	vcvtdq2ps ymm3,ymm1
   c:	c5 fc 5b e1          	vcvtdq2ps ymm4,ymm1
  10:	c5 fc 5b e9          	vcvtdq2ps ymm5,ymm1
  14:	c5 fc 5b f1          	vcvtdq2ps ymm6,ymm1
  18:	c5 fc 5b f9          	vcvtdq2ps ymm7,ymm1
  1c:	c5 7c 5b c1          	vcvtdq2ps ymm8,ymm1
  20:	c5 7c 5b c9          	vcvtdq2ps ymm9,ymm1
  24:	c5 7c 5b d1          	vcvtdq2ps ymm10,ymm1
  28:	c5 7c 5b d9          	vcvtdq2ps ymm11,ymm1
  2c:	c5 7c 5b e1          	vcvtdq2ps ymm12,ymm1

Init:

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

Show nanoBench command
Results:
- MPERF: 20.91
- APERF: 24.0
- UOPS: 26.0
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 23.94
- DIV_CYCLES: 0.0

With loop_count=100 and unroll_count=10

Code:

   0:	c5 fc 5b c1          	vcvtdq2ps ymm0,ymm1
   4:	c5 fc 5b d1          	vcvtdq2ps ymm2,ymm1
   8:	c5 fc 5b d9          	vcvtdq2ps ymm3,ymm1
   c:	c5 fc 5b e1          	vcvtdq2ps ymm4,ymm1
  10:	c5 fc 5b e9          	vcvtdq2ps ymm5,ymm1
  14:	c5 fc 5b f1          	vcvtdq2ps ymm6,ymm1
  18:	c5 fc 5b f9          	vcvtdq2ps ymm7,ymm1
  1c:	c5 7c 5b c1          	vcvtdq2ps ymm8,ymm1
  20:	c5 7c 5b c9          	vcvtdq2ps ymm9,ymm1
  24:	c5 7c 5b d1          	vcvtdq2ps ymm10,ymm1
  28:	c5 7c 5b d9          	vcvtdq2ps ymm11,ymm1
  2c:	c5 7c 5b e1          	vcvtdq2ps ymm12,ymm1

Init:

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

Show nanoBench command
Results:
- MPERF: 20.91
- APERF: 24.0
- UOPS: 24.2
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 23.94
- DIV_CYCLES: 0.0

With the same register for for different operands

With unroll_count=500 and no inner loop

Code:

   0:	c5 fc 5b c0          	vcvtdq2ps ymm0,ymm0

Init:

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

Show nanoBench command
Results:
- MPERF: 3.5
- APERF: 4.0
- UOPS: 2.0
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 2.0
- DIV_CYCLES: 0.0

With loop_count=1000 and unroll_count=10

Code:

   0:	c5 fc 5b c0          	vcvtdq2ps ymm0,ymm0

Init:

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

Show nanoBench command
Results:
- MPERF: 3.49
- APERF: 4.0
- UOPS: 2.2
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 2.0
- DIV_CYCLES: 0.0

With loop_count=100 and unroll_count=100

Code:

   0:	c5 fc 5b c0          	vcvtdq2ps ymm0,ymm0

Init:

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

Show nanoBench command
Results:
- MPERF: 3.49
- APERF: 4.0
- UOPS: 2.02
- FpuPipeAssignment.Total0: 0.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 2.0
- DIV_CYCLES: 0.0

VCVTDQ2PS (YMM, YMM) - Throughput and Uops

With different registers for different operands

With 1 independent instruction

With unroll_count=500 and no inner loop

With loop_count=1000 and unroll_count=10

With loop_count=100 and unroll_count=100

With 4 independent instructions

With unroll_count=200 and no inner loop

With loop_count=1000 and unroll_count=2

With loop_count=100 and unroll_count=20

With 8 independent instructions

With unroll_count=100 and no inner loop

With loop_count=1000 and unroll_count=1

With loop_count=100 and unroll_count=10

With 12 independent instructions

With unroll_count=100 and no inner loop

With loop_count=1000 and unroll_count=1

With loop_count=100 and unroll_count=10

With the same register for for different operands

With unroll_count=500 and no inner loop

With loop_count=1000 and unroll_count=10

With loop_count=100 and unroll_count=100