Icestorm: SQSHLU (vector, 8B) measurements

Code:

  sqshlu v0.8b, v0.8b, #3

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:

  sqshlu v0.8b, v0.8b, #3

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 ldst uop inputs (80)	map simd uop inputs (81)	? int output thing (e9)	? ldst retires (ed)	? simd retires (ee)	? int retires (ef)
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10006	200	0	10006	1	0	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	0	10004	1	0	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	0	10004	1	0	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	0	10004	1	0	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	0	10004	1	0	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	0	10004	1	0	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	0	10004	1	0	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	0	10004	1	0	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	3947	2361	10091	1807	1042	10005	2028
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	0	10004	1	0	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	509247	10020	20	10006	20	10047	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	509246	10020	20	10004	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:

  sqshlu v0.8b, v8.8b, #3
  sqshlu v1.8b, v8.8b, #3
  sqshlu v2.8b, v8.8b, #3
  sqshlu v3.8b, v8.8b, #3
  sqshlu v4.8b, v8.8b, #3
  sqshlu v5.8b, v8.8b, #3
  sqshlu v6.8b, v8.8b, #3
  sqshlu v7.8b, v8.8b, #3

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)	schedule ldst uop (55)	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)
80204	40089	80107	101	80006	0	100	80010	300	320036	80108	200	80012	200	80014	1	80000	100
80204	40034	80107	101	80006	0	100	80010	300	320036	80108	200	80012	200	80012	1	80000	100
80204	40034	80105	101	80004	0	100	80008	300	320036	80108	200	80012	200	80012	1	80000	100
80204	40034	80105	101	80004	0	100	80008	300	320036	80108	200	80012	200	80012	1	80000	100
80204	40034	80105	101	80004	0	100	80008	300	320036	80108	200	80012	200	80061	1	80000	100
80204	40034	80105	101	80004	0	100	80008	300	320036	80108	200	80012	200	80012	1	80000	100
59326	31623	59284	355	58762	167	360	58782	300	320044	80110	200	80014	200	80012	1	80000	100
80204	40045	80105	101	80004	0	100	80008	300	320208	80154	200	80064	200	80012	1	80000	100
80204	40034	80105	101	80004	0	100	80008	300	320036	80108	200	80012	200	80012	1	80000	100
80204	40034	80105	101	80004	0	100	80008	300	320036	80108	200	80012	200	80012	1	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 simd uop inputs (81)	? int output thing (e9)	? simd retires (ee)	? int retires (ef)
80024	40206	80029	21	80008	20	80012	70	320000	80020	20	80000	20	80000	11	80000	10
80025	40068	80061	21	80040	20	80052	70	320000	80020	20	80000	20	80000	11	80000	10
80024	40034	80021	21	80000	20	80000	70	320208	80074	20	80066	20	80000	11	80000	10
80024	40034	80021	21	80000	20	80000	70	320000	80020	20	80000	20	80000	11	80000	10
80024	40034	80021	21	80000	20	80000	70	320000	80020	20	80000	20	80000	11	80000	10
80024	40034	80021	21	80000	20	80000	70	320000	80020	20	80000	20	80000	11	80000	10
80024	40034	80021	21	80000	20	80000	70	320000	80020	20	80000	20	80000	11	80000	10
80024	40034	80021	21	80000	20	80000	70	320000	80020	20	80000	20	80000	11	80000	10
80024	40034	80021	21	80000	20	80000	70	320000	80020	20	80000	20	80000	11	80000	10
80024	40034	80021	21	80000	20	80000	70	320000	80020	20	80000	20	80000	11	80000	10

SQSHLU (vector, 8B)

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