BTS (M64, 0)

Experiment 1

Instruction: BTS qword ptr [R14], 0
Chain instructions: MOV R12, [R14];MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;XOR R14, R12; XOR R14, R12
Chain latency: ≥13

Code:

   0:	49 0f ba 2e 00       	bts    QWORD PTR [r14],0x0
   5:	4d 8b 26             	mov    r12,QWORD PTR [r14]
   8:	4d 63 e4             	movsxd r12,r12d
   b:	4d 63 e4             	movsxd r12,r12d
   e:	4d 63 e4             	movsxd r12,r12d
  11:	4d 63 e4             	movsxd r12,r12d
  14:	4d 63 e4             	movsxd r12,r12d
  17:	4d 63 e4             	movsxd r12,r12d
  1a:	4d 63 e4             	movsxd r12,r12d
  1d:	4d 63 e4             	movsxd r12,r12d
  20:	4d 63 e4             	movsxd r12,r12d
  23:	4d 63 e4             	movsxd r12,r12d
  26:	4d 31 e6             	xor    r14,r12
  29:	4d 31 e6             	xor    r14,r12

Show nanoBench command
Results:
- MPERF: 18.5
- APERF: 23.05
- UOPS: 17.0

Experiment 2 (with additional nop)

Instruction: BTS qword ptr [R14], 0
Chain instructions: MOV R12, [R14];MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;XOR R14, R12; XOR R14, R12;nop
Chain latency: ≥13

Code:

   0:	49 0f ba 2e 00       	bts    QWORD PTR [r14],0x0
   5:	4d 8b 26             	mov    r12,QWORD PTR [r14]
   8:	4d 63 e4             	movsxd r12,r12d
   b:	4d 63 e4             	movsxd r12,r12d
   e:	4d 63 e4             	movsxd r12,r12d
  11:	4d 63 e4             	movsxd r12,r12d
  14:	4d 63 e4             	movsxd r12,r12d
  17:	4d 63 e4             	movsxd r12,r12d
  1a:	4d 63 e4             	movsxd r12,r12d
  1d:	4d 63 e4             	movsxd r12,r12d
  20:	4d 63 e4             	movsxd r12,r12d
  23:	4d 63 e4             	movsxd r12,r12d
  26:	4d 31 e6             	xor    r14,r12
  29:	4d 31 e6             	xor    r14,r12
  2c:	90                   	nop

Show nanoBench command
Results:
- MPERF: 18.5
- APERF: 23.05
- UOPS: 18.0

Latency operand 1 → 1 (address, index register): ≤10

Experiment 1

Instruction: BTS qword ptr [R14+R13], 0
Chain instructions: MOV R12, [R14+R13];MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;XOR R13, R12; XOR R13, R12
Chain latency: ≥13

Code:

   0:	4b 0f ba 2c 2e 00    	bts    QWORD PTR [r14+r13*1],0x0
   6:	4f 8b 24 2e          	mov    r12,QWORD PTR [r14+r13*1]
   a:	4d 63 e4             	movsxd r12,r12d
   d:	4d 63 e4             	movsxd r12,r12d
  10:	4d 63 e4             	movsxd r12,r12d
  13:	4d 63 e4             	movsxd r12,r12d
  16:	4d 63 e4             	movsxd r12,r12d
  19:	4d 63 e4             	movsxd r12,r12d
  1c:	4d 63 e4             	movsxd r12,r12d
  1f:	4d 63 e4             	movsxd r12,r12d
  22:	4d 63 e4             	movsxd r12,r12d
  25:	4d 63 e4             	movsxd r12,r12d
  28:	4d 31 e5             	xor    r13,r12
  2b:	4d 31 e5             	xor    r13,r12

Init:
```
XOR R13, R13
```
Show nanoBench command
Results:
- MPERF: 18.5
- APERF: 23.05
- UOPS: 17.0

Experiment 2 (with additional nop)

Instruction: BTS qword ptr [R14+R13], 0
Chain instructions: MOV R12, [R14+R13];MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;XOR R13, R12; XOR R13, R12;nop
Chain latency: ≥13

Code:

   0:	4b 0f ba 2c 2e 00    	bts    QWORD PTR [r14+r13*1],0x0
   6:	4f 8b 24 2e          	mov    r12,QWORD PTR [r14+r13*1]
   a:	4d 63 e4             	movsxd r12,r12d
   d:	4d 63 e4             	movsxd r12,r12d
  10:	4d 63 e4             	movsxd r12,r12d
  13:	4d 63 e4             	movsxd r12,r12d
  16:	4d 63 e4             	movsxd r12,r12d
  19:	4d 63 e4             	movsxd r12,r12d
  1c:	4d 63 e4             	movsxd r12,r12d
  1f:	4d 63 e4             	movsxd r12,r12d
  22:	4d 63 e4             	movsxd r12,r12d
  25:	4d 63 e4             	movsxd r12,r12d
  28:	4d 31 e5             	xor    r13,r12
  2b:	4d 31 e5             	xor    r13,r12
  2e:	90                   	nop

Init:
```
XOR R13, R13
```
Show nanoBench command
Results:
- MPERF: 18.5
- APERF: 23.05
- UOPS: 18.0

Latency operand 1 → 1 (memory): 8

Experiment 1

Instruction: BTS qword ptr [R14], 0

Code:

   0:	49 0f ba 2e 00       	bts    QWORD PTR [r14],0x0

Show nanoBench command
Results:
- MPERF: 6.48
- APERF: 8.08
- UOPS: 4.0

Experiment 2

Instruction: BTS qword ptr [R14], 0
Chain instructions: MOV R12, [R14];MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOVSX R12, R12D;MOV [R14], R12
Chain latency: 16

Code:

   0:	49 0f ba 2e 00       	bts    QWORD PTR [r14],0x0
   5:	4d 8b 26             	mov    r12,QWORD PTR [r14]
   8:	4d 63 e4             	movsxd r12,r12d
   b:	4d 63 e4             	movsxd r12,r12d
   e:	4d 63 e4             	movsxd r12,r12d
  11:	4d 63 e4             	movsxd r12,r12d
  14:	4d 63 e4             	movsxd r12,r12d
  17:	4d 63 e4             	movsxd r12,r12d
  1a:	4d 63 e4             	movsxd r12,r12d
  1d:	4d 63 e4             	movsxd r12,r12d
  20:	4d 63 e4             	movsxd r12,r12d
  23:	4d 63 e4             	movsxd r12,r12d
  26:	4d 89 26             	mov    QWORD PTR [r14],r12

Show nanoBench command
Results:
- MPERF: 19.49
- APERF: 24.1
- UOPS: 16.0

Latency operand 1 → 3 (address, base register): 12

Experiment 1

Instruction: BTS qword ptr [R14], 0
Chain instruction: CMOVC R14, R14
Chain latency: 1

Code:

   0:	49 0f ba 2e 00       	bts    QWORD PTR [r14],0x0
   5:	4d 0f 42 f6          	cmovb  r14,r14

Show nanoBench command
Results:
- MPERF: 10.48
- APERF: 13.0
- UOPS: 5.0

Experiment 2 (with dependency-breaking instructions)

Instruction: BTS qword ptr [R14], 0
Chain instructions: CMOVC R14, R14;MOV qword ptr [R14], 0
Chain latency: 1

Code:

   0:	49 0f ba 2e 00       	bts    QWORD PTR [r14],0x0
   5:	4d 0f 42 f6          	cmovb  r14,r14
   9:	49 c7 06 00 00 00 00 	mov    QWORD PTR [r14],0x0

Show nanoBench command
Results:
- MPERF: 10.48
- APERF: 12.97
- UOPS: 6.0

Latency operand 1 → 3 (address, index register): 5

Experiment 1

Instruction: BTS qword ptr [R14+R13], 0
Chain instruction: CMOVC R13, R13
Chain latency: 1

Code:

   0:	4b 0f ba 2c 2e 00    	bts    QWORD PTR [r14+r13*1],0x0
   6:	4d 0f 42 ed          	cmovb  r13,r13

Init:
```
XOR R13, R13
```
Show nanoBench command
Results:
- MPERF: 10.48
- APERF: 13.0
- UOPS: 5.0

Experiment 2 (with dependency-breaking instructions)

Instruction: BTS qword ptr [R14+R13], 0
Chain instructions: CMOVC R13, R13;MOV qword ptr [R14], 0
Chain latency: 1

Code:

   0:	4b 0f ba 2c 2e 00    	bts    QWORD PTR [r14+r13*1],0x0
   6:	4d 0f 42 ed          	cmovb  r13,r13
   a:	49 c7 06 00 00 00 00 	mov    QWORD PTR [r14],0x0

Init:
```
XOR R13, R13
```
Show nanoBench command
Results:
- MPERF: 4.69
- APERF: 6.0
- UOPS: 6.0

Latency operand 1 → 3 (memory): ≤7

Experiment 1

Instruction: BTS qword ptr [R14], 0
Chain instructions: CMOVC R12, R12;MOVSX R12, R12d;MOVSX R12, R12d;MOVSX R12, R12d;MOVSX R12, R12d;MOVSX R12, R12d;MOVSX R12, R12d;MOVSX R12, R12d;MOVSX R12, R12d;MOVSX R12, R12d;MOVSX R12, R12d;mov [R14], R12
Chain latency: ≥12

Code:

   0:	49 0f ba 2e 00       	bts    QWORD PTR [r14],0x0
   5:	4d 0f 42 e4          	cmovb  r12,r12
   9:	4d 63 e4             	movsxd r12,r12d
   c:	4d 63 e4             	movsxd r12,r12d
   f:	4d 63 e4             	movsxd r12,r12d
  12:	4d 63 e4             	movsxd r12,r12d
  15:	4d 63 e4             	movsxd r12,r12d
  18:	4d 63 e4             	movsxd r12,r12d
  1b:	4d 63 e4             	movsxd r12,r12d
  1e:	4d 63 e4             	movsxd r12,r12d
  21:	4d 63 e4             	movsxd r12,r12d
  24:	4d 63 e4             	movsxd r12,r12d
  27:	4d 89 26             	mov    QWORD PTR [r14],r12

Show nanoBench command
Results:
- MPERF: 15.54
- APERF: 19.2
- UOPS: 16.0

BTS (M64, 0) - Latency

Operands

Latency operand 1 → 1 (address, base register): ≤10

Latency operand 1 → 1 (address, index register): ≤10

Latency operand 1 → 1 (memory): 8

Latency operand 1 → 3 (address, base register): 12

Latency operand 1 → 3 (address, index register): 5

Latency operand 1 → 3 (memory): ≤7

Latency operand 1 → 1 (address, base register): ≤10

Experiment 1

Experiment 2 (with additional nop)

Latency operand 1 → 1 (address, index register): ≤10

Experiment 1

Experiment 2 (with additional nop)

Latency operand 1 → 1 (memory): 8

Experiment 1

Experiment 2

Latency operand 1 → 3 (address, base register): 12

Experiment 1

Experiment 2 (with dependency-breaking instructions)

Latency operand 1 → 3 (address, index register): 5

Experiment 1

Experiment 2 (with dependency-breaking instructions)

Latency operand 1 → 3 (memory): ≤7

Experiment 1