Icestorm: MVN (register, lsr, 32-bit) measurements

Code:

  mvn w0, w0, lsr #17

Initialization

  mov x0, 1
  mov x1, 2

(no loop instructions)

1000 unrolls and 1 iteration

Retires: 1.000

Issues: 2.000

Integer unit issues: 2.001

Load/store unit issues: 0.000

SIMD/FP unit issues: 0.000

Recorded non-zero counters (first 10 of 64 runs)

retire uop (01)	cycle (02)	schedule uop (52)	schedule int uop (53)	dispatch int uop (56)	int uops in schedulers (59)	dispatch uop (78)	map int uop (7c)	map int uop inputs (7f)	? int output thing (e9)	? int retires (ef)
1004	2030	2001	2001	1000	52265	1000	1000	1000	2001	1000
1004	2030	2001	2001	1000	52265	1000	1000	1000	2001	1000
1004	2030	2001	2001	1000	52265	1000	1000	1000	2001	1000
1004	2030	2001	2001	1000	52265	1000	1000	1000	2001	1000
1004	2030	2001	2001	1000	52265	1000	1000	1000	2001	1000
1004	2030	2001	2001	1000	52265	1000	1000	1000	2001	1000
1004	2030	2001	2001	1000	52265	1000	1000	1000	2001	1000
1004	2030	2001	2001	1000	52265	1000	1000	1000	2001	1000
1004	2030	2001	2001	1000	52265	1000	1000	1000	2001	1000
1004	2030	2001	2001	1000	52265	1000	1000	1000	2001	1000

Test 2: Latency 1->2

Code:

  mvn w0, w0, lsr #17

Initialization

  mov x0, 1
  mov x1, 2

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 2.0030

Recorded non-zero counters (first 10 of 64 runs)

retire uop (01)	cycle (02)	schedule uop (52)	schedule int uop (53)	dispatch int uop (56)	int uops in schedulers (59)	dispatch uop (78)	map int uop (7c)	map int uop inputs (7f)	? int output thing (e9)	? int retires (ef)
10204	20030	20101	20101	10104	529100	10104	10210	10212	20001	10100
10204	20030	20101	20101	10104	529186	10104	10212	10212	20001	10100
10204	20030	20101	20101	10104	529186	10104	10212	10212	20001	10100
10204	20030	20101	20101	10104	529186	10104	10212	10252	20016	10100
10204	20030	20101	20101	10104	529186	10104	10212	10212	20001	10100
10204	20030	20101	20101	10104	529186	10104	10212	10212	20001	10100
10204	20030	20101	20101	10104	529186	10104	10212	10212	20001	10100
10204	20030	20101	20101	10104	529186	10104	10212	10212	20001	10100
10204	20030	20101	20101	10104	529186	10104	10212	10212	20001	10100
10204	20030	20101	20101	10104	529186	10104	10212	10212	20001	10100

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0030

Recorded non-zero counters (first 10 of 64 runs)

retire uop (01)	cycle (02)	schedule uop (52)	schedule int uop (53)	dispatch int uop (56)	int uops in schedulers (59)	dispatch uop (78)	map int uop (7c)	map int uop inputs (7f)	? int output thing (e9)	? int retires (ef)
10024	20030	20021	20021	10025	529197	10020	10020	10020	20011	10010
10024	20030	20021	20021	10020	529253	10020	10020	10020	20011	10010
10024	20030	20021	20021	10020	529253	10020	10020	10020	20011	10010
10024	20078	20042	20042	10055	529253	10020	10020	10020	20011	10010
10024	20030	20021	20021	10020	530243	10090	10102	10061	20032	10010
10024	20078	20042	20042	10055	529253	10020	10020	10020	20011	10010
10024	20030	20021	20021	10020	529253	10020	10020	10020	20011	10010
10024	20030	20021	20021	10020	529253	10020	10020	10020	20011	10010
10024	20030	20021	20021	10020	529253	10020	10020	10020	20011	10010
10024	20030	20021	20021	10020	529253	10020	10020	10020	20011	10010

Test 3: throughput

Count: 8

Code:

  mvn w0, w8, lsr #17
  mvn w1, w8, lsr #17
  mvn w2, w8, lsr #17
  mvn w3, w8, lsr #17
  mvn w4, w8, lsr #17
  mvn w5, w8, lsr #17
  mvn w6, w8, lsr #17
  mvn w7, w8, lsr #17

Initialization

  mov x8, 9

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.6675

Recorded non-zero counters (first 10 of 64 runs)

retire uop (01)	cycle (02)	schedule uop (52)	schedule int uop (53)	schedule simd uop (54)	schedule ldst uop (55)	dispatch int uop (56)	dispatch simd uop (57)	dispatch ldst uop (58)	int uops in schedulers (59)	simd uops in schedulers (5a)	ldst uops in schedulers (5b)	dispatch uop (78)	map int uop (7c)	map ldst uop (7d)	map simd uop (7e)	map int uop inputs (7f)	? int output thing (e9)	? int retires (ef)
80205	53435	160162	160162	0	0	80177	0	0	1360566	0	0	80130	80236	0	0	80334	160142	80100
80204	53415	160116	160116	0	0	80130	0	0	1360838	0	0	80130	80236	0	0	80448	160278	80100
80204	53404	160117	160117	0	0	80130	0	0	1360838	0	0	80130	80236	0	0	80236	160017	80100
80204	53404	160117	160117	0	0	80130	0	0	1360838	0	0	80130	80236	0	0	80236	160017	80100
80204	53404	160117	160117	0	0	80130	0	0	1360838	0	0	80130	80236	0	0	80236	160017	80100
80204	53404	160117	160117	0	0	80130	0	0	1360838	0	0	80130	80236	0	0	80236	160017	80100
80204	53404	160117	160117	0	0	80130	0	0	1360838	0	0	80130	80236	0	0	80236	160017	80100
80204	53404	160117	160117	0	0	80130	0	0	1360838	0	0	80130	80236	0	0	80236	160017	80100
80204	53404	160117	160117	0	0	80130	0	0	1360838	0	0	80130	80236	0	0	80236	160017	80100
80205	53434	160162	160162	0	0	80177	0	0	1360838	0	0	80130	80236	0	0	80236	160017	80100

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.6671

Recorded non-zero counters (first 10 of 64 runs)

retire uop (01)	cycle (02)	schedule uop (52)	schedule int uop (53)	dispatch int uop (56)	int uops in schedulers (59)	dispatch uop (78)	map int uop (7c)	map int uop inputs (7f)	? int output thing (e9)	? int retires (ef)
80024	53378	160039	160039	80051	1359975	80051	80056	80020	160011	80010
80024	53371	160021	160021	80020	1359903	80020	80020	80020	160011	80010
80024	53371	160021	160021	80020	1359903	80020	80020	80020	160011	80010
80024	53371	160021	160021	80020	1359903	80020	80020	80020	160011	80010
80024	53371	160021	160021	80020	1359903	80020	80020	80020	160011	80010
80024	53371	160021	160021	80020	1359903	80020	80020	80112	160077	80010
80024	53371	160021	160021	80020	1359903	80020	80020	80020	160011	80010
80024	53371	160021	160021	80020	1359903	80020	80020	80020	160011	80010
80024	53371	160021	160021	80020	1359903	80020	80020	80020	160011	80010
80024	53371	160021	160021	80020	1359903	80020	80020	80020	160011	80010

MVN (register, lsr, 32-bit)

Test 1: uops

1000 unrolls and 1 iteration

Test 2: Latency 1->2

100 unrolls and 100 iterations

1000 unrolls and 10 iterations

Test 3: throughput

100 unrolls and 100 iterations

1000 unrolls and 10 iterations