Icestorm: SQRSHRN2 (2D) measurements

Code:

  sqrshrn2 v0.4s, v1.2d, #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)	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 simd uop inputs (81)	? int output thing (e9)	? simd retires (ee)
1004	3033	1001	1	1000	1000	0	0	0	75905	1000	0	0	1000	2000	1	1000
1004	3033	1001	1	1000	1000	0	0	0	75905	1000	0	0	1000	2000	1	1000
1004	3033	1001	1	1000	1000	0	0	0	75905	1000	0	0	1000	2000	1	1000
1004	3033	1001	1	1000	1000	0	0	0	75905	1000	0	0	1000	2000	1	1000
1004	3033	1001	1	1000	1000	0	0	0	75905	1000	0	0	1000	2000	1	1000
1004	3033	1001	1	1000	1000	0	0	0	75905	1000	0	0	1000	2000	1	1000
1004	3033	1001	1	1000	1000	0	0	0	75905	1000	0	0	1000	2000	1	1000
1004	3033	1001	1	1000	1000	0	0	0	75905	1000	0	0	1000	2000	1	1000
1004	3033	1001	1	1000	1000	0	0	0	75905	1000	0	0	1000	2000	1	1000
1004	3033	1001	1	1000	1000	0	0	0	75905	1000	0	0	1000	2000	1	1000

Test 2: Latency 1->1

Code:

  sqrshrn2 v0.4s, v1.2d, #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): 3.0033

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	30033	10101	101	10000	100	10000	300	768905	10100	200	10006	200	20012	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0033

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	30033	10021	21	10000	20	10000	70	768905	10020	20	10004	20	20008	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	69	768905	10020	20	10004	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10

Test 3: Latency 1->2

Code:

  sqrshrn2 v0.4s, v0.2d, #3

Initialization

  movi v0.16b, 1

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 3.0033

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	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	769247	10131	200	10048	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0033

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	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10025	30066	10027	21	10006	20	10031	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10

Test 4: throughput

Count: 8

Code:

  movi v0.16b, 0
  sqrshrn2 v0.4s, v8.2d, #3
  movi v1.16b, 0
  sqrshrn2 v1.4s, v8.2d, #3
  movi v2.16b, 0
  sqrshrn2 v2.4s, v8.2d, #3
  movi v3.16b, 0
  sqrshrn2 v3.4s, v8.2d, #3
  movi v4.16b, 0
  sqrshrn2 v4.4s, v8.2d, #3
  movi v5.16b, 0
  sqrshrn2 v5.4s, v8.2d, #3
  movi v6.16b, 0
  sqrshrn2 v6.4s, v8.2d, #3
  movi v7.16b, 0
  sqrshrn2 v7.4s, v8.2d, #3

Initialization

  movi v8.16b, 9

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.5011

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)
160204	40508	80109	101	80008	100	80012	300	320052	80112	200	80012	200	160026	1	160000	100
160204	40185	80110	101	80009	100	80013	300	320052	80112	200	80012	200	160024	1	160000	100
160204	40086	80109	101	80008	100	80012	300	320052	80112	200	80012	200	160024	1	160000	100
160204	40086	80109	101	80008	100	80012	300	320052	80112	200	80012	200	160024	1	160000	100
160204	40086	80109	101	80008	100	80012	300	320052	80112	200	80012	200	160024	1	160000	100
160204	40086	80109	101	80008	100	80012	300	320052	80112	200	80012	200	160024	1	160000	100
160204	40086	80109	101	80008	100	80012	300	320052	80112	200	80012	200	160024	1	160000	100
160204	40086	80109	101	80008	100	80012	300	320052	80112	200	80012	200	160024	1	160000	100
160204	40086	80109	101	80008	100	80012	300	320052	80112	200	80012	200	160024	1	160000	100
160204	40110	80110	101	80009	100	80013	300	320052	80112	200	80012	200	160024	1	160000	100

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.5052

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)
160024	43739	80020	11	80009	10	80013	30	320052	80022	20	80012	20	160000	1	160000	10
160024	41223	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160000	1	160000	10
160024	40428	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160000	1	160000	10
160024	40412	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160000	1	160000	10
160024	40398	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160000	1	160000	10
160024	40421	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160000	1	160000	10
160024	40381	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160000	1	160000	10
160024	40421	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160000	1	160000	10
160024	40381	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160000	1	160000	10
160024	40417	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160000	1	160000	10

Test 5: throughput

Count: 16

Code:

  sqrshrn2 v0.4s, v16.2d, #3
  sqrshrn2 v1.4s, v16.2d, #3
  sqrshrn2 v2.4s, v16.2d, #3
  sqrshrn2 v3.4s, v16.2d, #3
  sqrshrn2 v4.4s, v16.2d, #3
  sqrshrn2 v5.4s, v16.2d, #3
  sqrshrn2 v6.4s, v16.2d, #3
  sqrshrn2 v7.4s, v16.2d, #3
  sqrshrn2 v8.4s, v16.2d, #3
  sqrshrn2 v9.4s, v16.2d, #3
  sqrshrn2 v10.4s, v16.2d, #3
  sqrshrn2 v11.4s, v16.2d, #3
  sqrshrn2 v12.4s, v16.2d, #3
  sqrshrn2 v13.4s, v16.2d, #3
  sqrshrn2 v14.4s, v16.2d, #3
  sqrshrn2 v15.4s, v16.2d, #3

Initialization

  movi v16.16b, 17

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.5002

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 ldst uop inputs (80)	map simd uop inputs (81)	? int output thing (e9)	? ldst retires (ed)	? simd retires (ee)	? int retires (ef)
160204	80071	160107	101	160006	0	100	160010	300	640036	160108	200	160012	200	0	320028	1	0	160000	100
160204	80035	160107	101	160006	0	100	160010	300	640036	160108	200	160012	200	0	320024	1	0	160000	100
160204	80035	160105	101	160004	0	100	160008	300	640036	160108	200	160012	655	407	320126	221	118	160001	317
160204	80035	160107	101	160006	0	100	160010	300	640036	160108	200	160012	200	0	320128	1	0	160000	100
160205	80079	160141	101	160040	0	100	160052	300	640036	160108	200	160012	200	0	320024	1	0	160000	100
160204	80035	160105	101	160004	0	100	160008	300	640036	160108	200	160012	200	0	320024	1	0	160000	100
160204	80035	160105	101	160004	0	100	160008	300	640036	160108	200	160012	200	0	320024	1	0	160000	100
160204	80035	160105	101	160004	0	100	160008	300	640036	160108	200	160012	200	0	320024	1	0	160000	100
160204	80035	160105	101	160004	0	100	160008	300	640036	160108	200	160012	200	0	320024	1	0	160000	100
160204	80035	160105	101	160004	0	100	160008	300	640036	160108	200	160012	200	0	320024	1	0	160000	100

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.5002

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)
160024	80162	160017	11	160006	10	160010	30	640000	160010	20	160000	20	320000	1	160000	10
160024	80107	160011	11	160000	10	160000	30	640000	160010	20	160000	20	320000	1	160000	10
160024	80035	160011	11	160000	10	160000	30	640000	160010	20	160000	20	320000	1	160000	10
160024	80035	160011	11	160000	10	160000	30	640000	160010	20	160000	20	320000	1	160000	10
160024	80035	160011	11	160000	10	160000	30	640000	160010	20	160000	20	320000	1	160000	10
160024	80035	160011	11	160000	10	160000	30	640000	160010	20	160000	20	320000	1	160000	10
160025	80071	160054	11	160043	10	160055	30	640000	160010	20	160000	20	320000	1	160000	10
160024	80035	160011	11	160000	10	160000	30	640000	160010	20	160000	20	320000	1	160000	10
160024	80035	160011	11	160000	10	160000	30	640000	160010	20	160000	20	320000	1	160000	10
160024	80035	160011	11	160000	10	160000	30	640000	160010	20	160000	20	320000	1	160000	10

SQRSHRN2 (2D)

Test 1: uops

1000 unrolls and 1 iteration

Test 2: Latency 1->1

100 unrolls and 100 iterations

1000 unrolls and 10 iterations

Test 3: Latency 1->2

100 unrolls and 100 iterations

1000 unrolls and 10 iterations

Test 4: throughput

100 unrolls and 100 iterations

1000 unrolls and 10 iterations

Test 5: throughput

100 unrolls and 100 iterations

1000 unrolls and 10 iterations