Icestorm: REV64 (vector, 4H) measurements

Code:

  rev64 v0.4h, v0.4h

Initialization

  movi v0.16b, 1
  movi v1.16b, 2

(no loop instructions)

1000 unrolls and 1 iteration

Retires: 1.000

Issues: 1.000

Integer unit issues: 0.001

Load/store unit issues: 0.000

SIMD/FP unit issues: 1.000

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)	dispatch simd uop (57)	ldst uops in schedulers (5b)	dispatch uop (78)	map simd uop (7e)	map simd uop inputs (81)	? int output thing (e9)	? simd retires (ee)
1004	2033	1001	1	1000	1000	50248	1000	1000	1000	1	1000
1004	2033	1001	1	1000	1000	50248	1000	1000	1000	1	1000
1004	2033	1001	1	1000	1000	50248	1000	1000	1000	1	1000
1004	2033	1001	1	1000	1000	50248	1000	1000	1000	1	1000
1004	2033	1001	1	1000	1000	50248	1000	1000	1000	1	1000
1004	2033	1001	1	1000	1000	50248	1000	1000	1000	1	1000
1004	2033	1001	1	1000	1000	50248	1000	1000	1000	1	1000
1004	2033	1001	1	1000	1000	50248	1000	1000	1000	1	1000
1004	2033	1001	1	1000	1000	50248	1000	1000	1000	1	1000
1004	2033	1001	1	1000	1000	50248	1000	1000	1000	1	1000

Test 2: Latency 1->2

Code:

  rev64 v0.4h, v0.4h

Initialization

  movi v0.16b, 1
  movi v1.16b, 2

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 2.0033

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)	dispatch int uop (56)	dispatch simd uop (57)	int uops in schedulers (59)	ldst uops in schedulers (5b)	dispatch uop (78)	map int uop (7c)	map simd uop (7e)	map int uop inputs (7f)	map simd uop inputs (81)	? int output thing (e9)	? simd retires (ee)	? int retires (ef)
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10006	200	10004	1	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	10004	1	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	10004	1	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	10004	1	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	10004	1	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	10004	1	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	10004	1	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	10004	1	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	10004	1	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	10004	1	10000	100

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0033

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)	dispatch int uop (56)	dispatch simd uop (57)	int uops in schedulers (59)	ldst uops in schedulers (5b)	dispatch uop (78)	map int uop (7c)	map simd uop (7e)	map int uop inputs (7f)	map simd uop inputs (81)	? int output thing (e9)	? simd retires (ee)	? int retires (ef)
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	10000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	10000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	10000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	10000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	10000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	10000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	10000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	10000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	10000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	10000	11	10000	10

Test 3: throughput

Count: 8

Code:

  rev64 v0.4h, v8.4h
  rev64 v1.4h, v8.4h
  rev64 v2.4h, v8.4h
  rev64 v3.4h, v8.4h
  rev64 v4.4h, v8.4h
  rev64 v5.4h, v8.4h
  rev64 v6.4h, v8.4h
  rev64 v7.4h, v8.4h

Initialization

  movi v8.16b, 9

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.5004

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)	dispatch int uop (56)	dispatch simd uop (57)	int uops in schedulers (59)	ldst uops in schedulers (5b)	dispatch uop (78)	map int uop (7c)	map simd uop (7e)	map int uop inputs (7f)	map ldst uop inputs (80)	map simd uop inputs (81)	? int output thing (e9)	? ldst retires (ed)	? simd retires (ee)	? int retires (ef)
80204	40042	80107	101	80006	100	80010	300	320036	80108	200	80012	200	0	80012	1	0	80000	100
80204	40034	80107	101	80006	100	80010	300	320036	80108	200	80012	200	0	80012	1	0	80000	100
80204	40034	80105	101	80004	100	80008	300	320036	80108	200	80012	200	0	80012	1	0	80000	100
80204	40034	80105	101	80004	100	80008	300	320036	80108	200	80012	200	0	80012	1	0	80000	100
80204	40034	80105	101	80004	100	80008	300	320036	80108	200	80012	200	0	80012	1	0	80000	100
80204	40034	80105	101	80004	100	80008	300	320036	80108	200	80012	200	0	80014	1	0	80000	100
80204	40054	80105	101	80004	100	80008	300	320036	80108	200	80012	200	0	80012	1	0	80000	100
80204	40034	80105	101	80004	100	80008	300	320036	80108	200	80012	200	0	80012	1	0	80000	100
80204	40034	80105	101	80004	100	80008	300	320036	80108	200	80012	200	0	80012	1	0	80000	100
80204	40034	80105	101	80004	100	80008	300	320036	80108	200	80012	200	0	80012	1	0	80000	100

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.5004

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)	dispatch int uop (56)	dispatch simd uop (57)	int uops in schedulers (59)	ldst uops in schedulers (5b)	dispatch uop (78)	map int uop (7c)	map simd uop (7e)	map int uop inputs (7f)	map ldst uop inputs (80)	map simd uop inputs (81)	? int output thing (e9)	? ldst retires (ed)	? simd retires (ee)	? int retires (ef)
80024	40118	80029	21	80008	20	80012	70	320216	80076	20	80065	20	0	80016	11	0	80000	10
80024	40034	80021	21	80000	20	80000	70	320000	80020	20	80000	20	0	80000	11	0	80000	10
80024	40034	80021	21	80000	20	80000	70	320000	80020	20	80000	20	0	80000	11	0	80000	10
80024	40034	80021	21	80000	20	80000	70	320000	80020	20	80000	20	0	80000	11	0	80000	10
80024	40034	80021	21	80000	20	80000	70	320000	80020	20	80000	20	0	80188	11	0	80000	10
80024	40034	80021	21	80000	20	80000	70	320000	80020	20	80000	20	0	80000	11	0	80000	10
80024	40034	80021	21	80000	20	80000	70	320000	80020	20	80000	20	0	80000	11	0	80000	10
80024	40034	80021	21	80000	20	80000	70	320000	80020	20	80000	20	0	80000	11	0	80000	10
80025	40080	80065	21	80044	20	80056	70	320756	80209	20	80189	20	0	80000	11	0	80000	10
80024	40034	80021	21	80000	20	80000	70	320000	80020	20	80000	20	0	80000	11	0	80000	10

REV64 (vector, 4H)

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