Firestorm: SHRN2 (4S) measurements

Code:

  shrn2 v0.8h, v1.4s, #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: 0.000

Load/store unit issues: 0.000

SIMD/FP unit issues: 1.000

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

retire uop (01)	cycle (02)	03	19	1e	3f	4e	51	schedule uop (52)	schedule simd uop (54)	dispatch simd uop (57)	ldst uops in schedulers (5b)	60	69	6d	6e	map stall dispatch (70)	map rewind (75)	map stall (76)	dispatch uop (78)	map simd uop (7e)	map simd uop inputs (81)	82	83	flush restart other nonspec (84)	85	inst all (8c)	inst simd alu (9a)	l1d cache writeback (a8)	ac	cf	d5	map dispatch bubble (d6)	dd	fetch restart (de)	e0	? simd retires (ee)	f5	f6	f7	f8	fd
1004	3037	22	0	0	61	2548	25	1000	1000	1000	398313	0	3018	3037	3037	2415	3	2895	1000	1000	2000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2630	1000	3038	3038	3038	3038	3038
1004	3037	23	0	15	61	2548	25	1000	1000	1000	398313	0	3018	3037	3037	2415	3	2895	1000	1000	2000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2630	1000	3038	3038	3038	3038	3038
1004	3037	23	0	0	61	2548	25	1000	1000	1000	398313	0	3018	3037	3085	2415	3	2895	1000	1000	2000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2630	1000	3038	3038	3038	3038	3038
1004	3037	22	0	12	82	2548	25	1000	1000	1000	398313	0	3018	3037	3037	2415	3	2895	1000	1000	2000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2630	1000	3038	3038	3085	3038	3038
1004	3037	23	0	3	61	2548	25	1000	1000	1000	398313	0	3018	3037	3037	2415	3	2895	1000	1000	2000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2630	1000	3038	3038	3038	3038	3038
1004	3037	22	0	12	61	2548	25	1000	1000	1000	398313	0	3018	3037	3037	2415	3	2895	1000	1000	2000	3037	3037	1	1	1001	1000	1	0	73	1	16	1	1	2630	1000	3038	3038	3038	3038	3038
1004	3037	23	0	0	61	2548	25	1000	1000	1000	398313	0	3018	3037	3037	2415	3	2895	1000	1000	2000	3037	3037	1	1	1001	1000	1	0	73	1	16	1	1	2630	1000	3038	3038	3038	3038	3038
1004	3037	22	0	0	61	2548	25	1000	1000	1000	398313	0	3018	3037	3037	2415	3	2895	1000	1000	2000	3037	3037	1	1	1001	1000	1	0	73	1	16	1	1	2630	1000	3038	3038	3038	3038	3038
1004	3037	22	0	0	61	2548	25	1000	1000	1000	398313	0	3018	3037	3037	2415	3	2895	1000	1000	2000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2630	1000	3038	3038	3038	3038	3038
1004	3037	22	0	12	189	2548	25	1000	1000	1000	398313	0	3018	3037	3037	2415	3	2895	1000	1000	2000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2630	1000	3038	3038	3038	3038	3038

Test 2: Latency 1->1

Code:

  shrn2 v0.8h, v1.4s, #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): 3.0037

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

retire uop (01)	cycle (02)	03	mmu table walk data (08)	18	19	1e	1f	3f	4e	51	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)	60	69	6d	6e	map stall dispatch (70)	map rewind (75)	map stall (76)	dispatch uop (78)	map int uop (7c)	map simd uop (7e)	map int uop inputs (7f)	map simd uop inputs (81)	82	83	flush restart other nonspec (84)	85	inst all (8c)	inst branch (8d)	inst branch taken (90)	inst branch cond (94)	inst int alu (97)	inst simd alu (9a)	9f	l1d tlb access (a0)	l1d tlb miss (a1)	ld unit uop (a6)	l1d cache writeback (a8)	a9	ac	c2	branch cond mispred nonspec (c5)	cf	d5	map dispatch bubble (d6)	dd	fetch restart (de)	e0	? int output thing (e9)	? simd retires (ee)	? int retires (ef)	f5	f6	f7	f8	fd
10204	30037	225	0	0	0	12	0	61	29548	25	10100	100	10000	100	10000	500	4277313	0	30018	30037	30037	28265	3	28745	10100	200	10000	200	20000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	0	0	0	0	0	0	710	1	16	1	1	29634	0	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	0	0	0	0	985	29548	25	10100	100	10000	100	10000	500	4277313	0	30018	30037	30037	28265	3	28745	10100	200	10000	200	20000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	0	0	0	0	2	0	710	1	16	1	1	29634	0	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	0	0	0	0	61	29548	25	10100	100	10000	100	10000	500	4277313	0	30018	30037	30037	28265	3	28745	10100	200	10000	200	20000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	0	0	0	0	0	0	710	1	16	1	1	29634	0	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	0	0	0	0	61	29548	25	10100	100	10000	100	10000	500	4277313	0	30018	30037	30037	28265	3	28745	10100	200	10000	200	20000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	0	0	0	0	0	0	710	1	16	1	1	29634	0	10000	100	30038	30038	30038	30038	30038
10204	30037	224	0	0	0	0	0	61	29548	25	10100	100	10000	100	10000	500	4277313	0	30018	30037	30037	28265	3	28745	10100	200	10000	200	20000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	0	0	0	0	0	0	710	1	16	1	1	29634	0	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	0	0	0	0	173	29548	25	10100	100	10000	100	10000	500	4277313	0	30018	30037	30037	28265	3	28745	10100	200	10000	200	20000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	0	0	0	0	0	0	710	1	16	1	1	29634	0	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	0	0	0	0	61	29548	25	10100	100	10000	100	10000	500	4277313	0	30018	30037	30037	28265	3	28745	10100	200	10000	200	20000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	0	0	0	0	0	0	710	1	16	1	1	29634	0	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	0	0	0	0	61	29548	25	10100	100	10000	100	10000	679	4277313	0	30018	30037	30037	28265	3	28745	10100	200	10000	200	20000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	0	0	0	24	0	0	710	1	16	1	1	29634	0	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	0	0	0	0	61	29548	25	10100	100	10000	100	10000	500	4277313	0	30018	30037	30037	28265	3	28745	10100	200	10000	200	20000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	0	0	0	0	0	0	710	1	16	1	1	29634	0	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	0	0	0	0	251	29548	25	10100	100	10000	100	10000	500	4277313	0	30018	30037	30037	28265	3	28745	10100	200	10000	200	20000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	0	0	0	0	0	0	710	1	16	1	1	29634	0	10000	100	30038	30038	30038	30038	30038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

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

retire uop (01)	cycle (02)	03	1e	1f	3f	4e	51	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)	60	69	6d	6e	map stall dispatch (70)	map rewind (75)	map stall (76)	dispatch uop (78)	map int uop (7c)	map simd uop (7e)	map int uop inputs (7f)	map simd uop inputs (81)	82	83	flush restart other nonspec (84)	85	inst all (8c)	inst branch (8d)	inst branch taken (90)	inst branch cond (94)	inst int alu (97)	inst simd alu (9a)	9f	ac	cf	d5	map dispatch bubble (d6)	dd	fetch restart (de)	e0	? simd retires (ee)	? int retires (ef)	f5	f6	f7	f8	fd
10024	30037	225	0	0	61	29548	25	10010	10	10000	10	10000	50	4277313	0	30018	30037	30037	28287	3	28767	10010	20	10000	20	20000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	640	2	16	2	2	29630	10000	10	30038	30038	30038	30038	30038
10024	30037	225	0	0	61	29548	25	10010	10	10000	10	10000	50	4277313	0	30018	30037	30037	28287	3	28767	10010	20	10000	20	20000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	640	2	16	2	2	29630	10000	10	30038	30038	30038	30038	30038
10024	30037	225	0	0	61	29548	25	10010	10	10000	10	10000	50	4277313	0	30018	30037	30037	28287	3	28767	10010	20	10000	20	20000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	640	2	16	2	2	29630	10000	10	30038	30038	30038	30038	30038
10024	30037	225	0	0	61	29548	25	10010	10	10000	10	10000	50	4277313	0	30018	30037	30037	28287	3	28767	10010	20	10000	20	20000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	640	2	16	2	2	29630	10000	10	30038	30038	30038	30038	30038
10024	30037	224	18	0	61	29548	25	10010	10	10000	10	10000	50	4277313	0	30018	30037	30037	28287	3	28767	10010	20	10000	22	20332	30037	30037	1	1	10021	10	9	10	10	10000	10	0	640	2	16	2	2	29630	10000	10	30038	30038	30038	30038	30038
10024	30037	225	0	0	61	29548	25	10010	10	10000	10	10000	50	4277313	0	30018	30037	30037	28287	3	28767	10010	20	10000	20	20000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	640	2	16	2	2	29630	10000	10	30038	30038	30038	30038	30038
10024	30037	225	0	0	61	29548	25	10010	10	10000	10	10000	50	4277313	0	30018	30037	30037	28287	3	28767	10010	20	10000	20	20000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	640	2	16	2	2	29630	10000	10	30038	30038	30038	30038	30038
10024	30037	225	0	0	61	29548	25	10010	10	10000	10	10000	50	4277313	0	30018	30037	30037	28287	3	28767	10010	20	10000	20	20000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	640	2	16	2	2	29630	10000	10	30038	30038	30038	30038	30038
10024	30037	225	0	0	61	29548	25	10010	10	10000	10	10000	50	4277313	0	30018	30037	30037	28287	3	28767	10010	20	10000	20	20000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	640	2	16	2	2	29630	10000	10	30038	30038	30038	30038	30038
10024	30037	225	0	0	61	29548	25	10010	10	10000	10	10000	50	4277313	0	30018	30037	30037	28287	3	28767	10010	20	10000	20	20000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	640	2	16	2	2	29630	10000	10	30038	30038	30038	30038	30038

Test 3: Latency 1->2

Code:

  shrn2 v0.8h, v0.4s, #3

Initialization

  movi v0.16b, 1

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 3.0037

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

retire uop (01)	cycle (02)	03	mmu table walk data (08)	18	19	1e	1f	3a	3f	4e	51	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)	60	69	6d	6e	map stall dispatch (70)	map rewind (75)	map stall (76)	dispatch uop (78)	map int uop (7c)	map simd uop (7e)	map int uop inputs (7f)	map simd uop inputs (81)	82	83	flush restart other nonspec (84)	85	inst all (8c)	inst branch (8d)	inst branch taken (90)	inst branch cond (94)	inst int alu (97)	inst simd alu (9a)	9f	l1d cache writeback (a8)	ac	branch cond mispred nonspec (c5)	branch mispred nonspec (cb)	cd	cf	d5	map dispatch bubble (d6)	dd	fetch restart (de)	e0	? int output thing (e9)	? simd retires (ee)	? int retires (ef)	f5	f6	f7	f8	fd
10204	30037	224	0	0	0	0	0	0	61	29547	25	10100	100	10000	100	10000	500	4277160	0	30018	30037	30037	28271	6	28740	10100	200	10008	200	20016	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	1	1	1	722	2	24	2	2	29629	0	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	0	0	0	0	0	97	29547	25	10100	100	10000	100	10000	500	4277160	1	30018	30037	30037	28252	6	28733	10100	200	10000	200	20000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	1	1	1	722	2	24	2	2	29629	0	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	0	0	0	0	0	97	29547	25	10100	100	10000	100	10000	500	4277160	1	30018	30037	30037	28252	6	28733	10100	200	10000	200	20000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	1	1	1	722	2	24	2	2	29629	0	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	0	0	0	0	0	97	29547	25	10100	100	10000	100	10000	500	4277160	0	30018	30037	30037	28252	6	28733	10100	200	10000	200	20000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	1	1	1	722	2	24	2	2	29629	0	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	0	0	0	0	1	97	29547	25	10100	100	10000	100	10000	500	4277160	1	30018	30037	30037	28252	6	28733	10255	200	10000	200	20000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	1	1	1	722	2	24	2	2	29629	0	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	0	0	0	0	1	97	29547	25	10100	100	10000	100	10000	500	4277160	0	30018	30037	30037	28252	6	28733	10100	200	10000	200	20000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	3	1	1	1	722	2	24	2	2	29629	0	10000	100	30038	30038	30038	30038	30038
10204	30037	224	0	0	0	0	0	1	97	29547	25	10100	100	10000	100	10000	500	4277160	1	30018	30037	30037	28252	6	28733	10100	200	10000	200	20000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	1	1	1	722	2	24	2	2	29629	0	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	0	0	0	0	0	61	29547	25	10100	100	10000	100	10000	500	4277160	0	30018	30037	30037	28271	6	28740	10100	200	10008	200	20016	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	1	1	1	717	0	16	0	0	29646	0	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	0	0	0	0	0	61	29547	25	10100	100	10000	100	10000	500	4277160	0	30018	30037	30037	28271	6	28741	10100	200	10008	200	20016	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	1	1	1	717	0	16	0	0	29645	0	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	0	0	0	0	0	61	29547	25	10100	100	10000	100	10000	500	4277160	1	30018	30037	30037	28271	7	28741	10100	200	10008	200	20016	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	1	1	1	718	0	16	0	0	29646	0	10000	100	30038	30038	30038	30038	30038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

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

retire uop (01)	cycle (02)	03	mmu table walk data (08)	09	l2 tlb miss data (0b)	1e	3f	4e	51	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)	60	69	6d	6e	map stall dispatch (70)	map rewind (75)	map stall (76)	dispatch uop (78)	map int uop (7c)	map simd uop (7e)	map int uop inputs (7f)	map simd uop inputs (81)	82	83	flush restart other nonspec (84)	85	inst all (8c)	inst branch (8d)	inst branch taken (90)	inst branch cond (94)	inst int alu (97)	inst simd alu (9a)	9f	l1d tlb miss (a1)	l1d cache writeback (a8)	a9	ac	branch cond mispred nonspec (c5)	cf	d5	map dispatch bubble (d6)	dd	fetch restart (de)	e0	? int output thing (e9)	eb	? simd retires (ee)	? int retires (ef)	f5	f6	f7	f8	fd
10024	30037	225	0	0	0	0	61	29547	25	10010	10	10000	10	10000	50	4277160	0	30018	30037	30037	28286	3	28767	10010	20	10000	20	20000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	640	2	16	2	2	29629	0	0	10000	10	30038	30038	30038	30038	30038
10024	30037	225	0	0	0	0	61	29547	25	10010	10	10000	10	10000	50	4277160	0	30018	30037	30037	28286	3	28767	10010	20	10000	20	20000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	640	2	16	2	2	29629	0	4	10000	10	30038	30038	30038	30038	30038
10024	30037	224	0	0	0	0	253	29547	25	10010	10	10000	10	10000	50	4277160	0	30018	30037	30037	28286	3	28767	10010	20	10000	20	20000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	640	2	16	2	2	29629	0	0	10000	10	30038	30038	30038	30038	30038
10024	30037	225	0	0	0	0	61	29547	25	10010	10	10000	10	10000	50	4277160	0	30018	30037	30037	28286	3	28767	10010	20	10000	20	20000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	3	0	640	2	16	2	2	29629	0	0	10000	10	30038	30038	30038	30038	30038
10024	30037	225	0	0	0	0	61	29547	25	10010	10	10000	10	10000	50	4277160	1	30018	30037	30037	28286	3	28767	10010	20	10000	20	20000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	640	2	16	2	2	29629	0	0	10000	10	30038	30038	30038	30038	30038
10024	30037	225	0	0	0	0	61	29547	25	10010	10	10000	10	10000	50	4277160	0	30018	30037	30037	28286	3	28767	10010	20	10000	20	20000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	640	2	16	2	2	29629	0	0	10000	10	30038	30038	30038	30038	30038
10024	30037	225	0	0	0	0	61	29547	25	10010	10	10000	10	10000	50	4277160	1	30018	30037	30037	28286	3	28767	10010	20	10000	20	20000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	640	2	16	2	2	29629	0	0	10000	10	30038	30038	30038	30038	30038
10024	30037	225	0	0	0	0	156	29547	25	10010	10	10000	10	10000	50	4277160	0	30018	30037	30037	28286	3	28767	10010	20	10000	20	20000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	640	2	16	2	2	29629	0	0	10000	10	30038	30038	30038	30038	30038
10024	30037	225	0	0	0	0	61	29547	25	10010	10	10000	10	10000	50	4277160	0	30018	30037	30037	28286	3	28767	10010	20	10000	20	20000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	640	2	16	2	2	29629	0	0	10000	10	30038	30038	30038	30038	30038
10024	30037	224	0	0	0	0	61	29547	25	10010	10	10000	10	10000	50	4277160	0	30018	30037	30037	28286	3	28767	10010	20	10000	20	20000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	640	2	16	2	2	29629	0	0	10000	10	30038	30038	30038	30038	30038

Test 4: throughput

Count: 8

Code:

  movi v0.16b, 0
  shrn2 v0.8h, v8.4s, #3
  movi v1.16b, 0
  shrn2 v1.8h, v8.4s, #3
  movi v2.16b, 0
  shrn2 v2.8h, v8.4s, #3
  movi v3.16b, 0
  shrn2 v3.8h, v8.4s, #3
  movi v4.16b, 0
  shrn2 v4.8h, v8.4s, #3
  movi v5.16b, 0
  shrn2 v5.8h, v8.4s, #3
  movi v6.16b, 0
  shrn2 v6.8h, v8.4s, #3
  movi v7.16b, 0
  shrn2 v7.8h, v8.4s, #3

Initialization

  movi v8.16b, 9

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.2508

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

retire uop (01)	cycle (02)	03	18	1e	1f	3f	51	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)	69	6d	6e	map rewind (75)	map stall (76)	dispatch uop (78)	map int uop (7c)	map simd uop (7e)	map int uop inputs (7f)	map simd uop inputs (81)	82	83	flush restart other nonspec (84)	85	inst all (8c)	inst branch (8d)	inst branch taken (90)	inst branch cond (94)	inst int alu (97)	inst simd alu (9a)	9f	l1d tlb access (a0)	l1d tlb miss (a1)	ld unit uop (a6)	l1d cache writeback (a8)	a9	ac	c2	branch cond mispred nonspec (c5)	branch mispred nonspec (cb)	cd	cf	map dispatch bubble (d6)	e0	? simd retires (ee)	? int retires (ef)	f5	f6	f7	f8	fd
160204	20088	150	0	0	0	71	25	80116	100	80016	100	80028	500	640196	20045	20065	20065	6	12	80128	200	80028	200	160056	20065	20065	1	1	160201	100	99	100	100	160000	100	0	0	0	1	0	0	0	1	1	1	10119	16	20062	160000	100	20066	20066	20066	20066	20066
160204	20065	150	0	0	0	29	25	80116	100	80016	100	80028	500	640196	20045	20065	20065	6	12	80128	200	80028	200	160056	20065	20065	1	1	160201	100	99	100	100	160000	100	0	0	0	0	0	0	0	1	1	1	10119	16	20062	160000	100	20066	20066	20066	20066	20066
160204	20065	150	0	0	0	29	25	80116	100	80016	100	80028	500	640196	20045	20065	20065	6	101	80128	200	80028	200	160056	20065	20065	1	1	160201	100	99	100	100	160000	100	0	0	0	1	0	0	0	1	1	1	10119	16	20062	160000	100	20066	20066	20066	20171	20066
160204	20065	150	0	0	0	29	25	80116	100	80016	100	80028	500	640196	20045	20065	20065	6	12	80128	200	80028	200	160056	20065	20065	1	1	160201	100	99	100	100	160000	100	2	2	0	1	0	0	0	1	1	1	10119	16	20062	160000	100	20066	20066	20066	20066	20066
160204	20065	151	0	0	0	29	25	80116	100	80016	100	80028	500	640196	20045	20065	20065	6	12	80128	200	80028	200	160056	20065	20065	1	1	160201	100	99	100	100	160000	100	0	0	0	0	0	0	0	1	1	1	10119	16	20062	160000	100	20066	20066	20066	20066	20066
160204	20065	151	0	0	0	29	25	80116	100	80016	100	80028	500	641876	20045	20065	20065	6	12	80128	200	80028	200	160056	20065	20065	1	1	160201	100	99	100	100	160000	100	0	0	0	0	0	0	0	1	1	1	10119	16	20062	160000	100	20066	20066	20066	20066	20066
160204	20065	151	0	12	0	29	25	80116	100	80016	100	80028	500	640196	20045	20065	20065	6	12	80128	200	80343	200	160056	20065	20065	1	1	160201	100	99	100	100	160000	100	0	0	0	1	0	0	0	1	1	1	10119	16	20062	160000	100	20066	20066	20066	20066	20066
160204	20065	150	0	0	0	29	25	80116	100	80016	100	80028	500	640196	20045	20065	20065	6	12	80128	200	80028	200	160056	20065	20065	1	1	160201	100	99	100	100	160000	100	0	0	0	0	0	0	0	1	1	1	10119	16	20062	160000	100	20066	20066	20066	20066	20066
160204	20065	150	0	0	0	29	25	80116	100	80016	100	80028	500	640196	20045	20065	20065	6	12	80128	200	80028	200	160056	20065	20065	1	1	160201	100	99	100	100	160000	100	0	0	0	0	0	0	0	1	1	1	10119	16	20062	160000	100	20066	20066	20066	20066	20066
160204	20065	150	0	0	0	29	25	80116	100	80016	100	80028	500	640196	20045	20065	20065	6	12	80128	200	80028	200	160056	20065	20065	1	1	160201	100	99	100	100	160000	100	0	0	0	0	0	0	0	1	1	1	10119	16	20062	160000	100	20066	20066	20066	20066	20066

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.2506

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

retire uop (01)	cycle (02)	03	18	1e	3f	51	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)	5f	60	61	69	6d	6e	map rewind (75)	map stall (76)	dispatch uop (78)	map int uop (7c)	map simd uop (7e)	map int uop inputs (7f)	map simd uop inputs (81)	82	83	flush restart other nonspec (84)	85	inst all (8c)	inst branch (8d)	inst branch taken (90)	inst branch cond (94)	inst int alu (97)	inst simd alu (9a)	9f	l1d cache writeback (a8)	ac	c2	cf	d0	d2	l1i cache miss demand (d3)	d5	map dispatch bubble (d6)	d9	da	db	dd	fetch restart (de)	e0	ea	eb	ec	? simd retires (ee)	? int retires (ef)	f5	f6	f7	f8	fd
160024	20091	150	1	0	51	27	80010	10	80000	10	80000	50	640000	0	1	0	20032	20051	20051	3	22	80010	20	80000	20	160000	20060	20060	1	1	160021	10	9	10	10	160000	10	0	0	2	10031	8	3	1	7	34	4	2	1	8	9	20057	20	36	3	160000	10	20061	20061	20061	20061	20061
160024	20060	150	1	0	45	27	80010	10	80000	10	80000	50	640000	0	1	5	20105	20060	20060	3	22	80010	20	80000	20	160000	20060	20060	1	1	160021	10	9	10	10	160000	10	0	0	0	10031	11	6	2	10	25	4	2	2	9	9	20057	40	36	2	160000	10	20061	20061	20061	20061	20061
160024	20051	150	0	0	51	29	80010	10	80000	10	80000	50	640000	0	1	5	20032	20060	20060	3	22	80010	20	80000	20	160000	20060	20060	1	1	160021	10	9	10	10	160000	10	0	0	0	10031	11	6	2	9	34	2	2	2	9	9	20057	40	35	2	160000	10	20061	20052	20061	20061	20061
160024	20060	150	0	0	51	29	80010	10	80000	10	80000	50	640000	0	1	5	20041	20060	20060	3	22	80010	20	80000	20	160000	20060	20060	1	1	160021	10	9	10	10	160000	10	0	0	0	10036	11	6	2	10	34	4	2	2	10	8	20057	40	22	2	160000	10	20061	20061	20061	20061	20061
160024	20060	150	0	0	51	29	80010	10	80000	10	80000	50	640000	0	1	5	20041	20060	20060	3	22	80010	20	80000	20	160000	20060	20060	1	1	160021	10	9	10	10	160000	10	21	9	0	10036	11	6	2	8	34	4	2	2	8	10	20057	40	10	2	160000	10	20061	20061	20061	20063	20061
160024	20060	150	0	0	51	29	80010	10	80000	10	80000	50	640000	0	1	5	20041	20060	20060	3	22	80010	20	80000	20	160000	20060	20060	1	1	160021	10	9	10	10	160000	10	0	0	0	10037	11	6	2	9	34	4	2	2	11	7	20057	40	16	2	160000	10	20061	20061	20061	20061	20061
160024	20060	150	0	0	51	29	80010	10	80000	10	80000	50	640000	0	1	5	20041	20060	20060	3	22	80010	20	80000	20	160000	20060	20051	1	1	160021	10	9	10	10	160000	10	0	0	0	10037	11	6	2	6	34	4	2	2	7	9	20057	40	10	2	160000	10	20061	20061	20061	20061	20061
160024	20060	151	0	0	51	29	80010	10	80000	10	80000	50	640000	0	1	5	20041	20060	20060	3	22	80010	20	80000	20	160000	20060	20060	1	1	160021	10	9	10	10	160000	10	0	0	0	10033	11	6	2	7	34	4	2	2	10	7	20057	40	18	2	160000	10	20061	20061	20061	20061	20061
160024	20060	150	0	0	51	29	80010	10	80000	10	80000	50	640000	0	1	5	20041	20060	20060	3	22	80010	20	80000	20	160000	20060	20060	1	1	160021	10	9	10	10	160000	10	7	0	0	10033	11	6	2	9	34	4	2	2	7	9	20057	40	12	2	160000	10	20061	20061	20061	20061	20061
160024	20060	150	0	0	51	29	80010	10	80000	10	80000	50	640000	0	1	5	20032	20060	20060	3	22	80010	20	80000	20	160000	20060	20060	1	1	160021	10	9	10	10	160000	10	0	0	0	10034	11	6	2	10	34	4	2	2	10	7	20057	20	10	2	160000	10	20061	20061	20061	20061	20052

Test 5: throughput

Count: 16

Code:

  shrn2 v0.8h, v16.4s, #3
  shrn2 v1.8h, v16.4s, #3
  shrn2 v2.8h, v16.4s, #3
  shrn2 v3.8h, v16.4s, #3
  shrn2 v4.8h, v16.4s, #3
  shrn2 v5.8h, v16.4s, #3
  shrn2 v6.8h, v16.4s, #3
  shrn2 v7.8h, v16.4s, #3
  shrn2 v8.8h, v16.4s, #3
  shrn2 v9.8h, v16.4s, #3
  shrn2 v10.8h, v16.4s, #3
  shrn2 v11.8h, v16.4s, #3
  shrn2 v12.8h, v16.4s, #3
  shrn2 v13.8h, v16.4s, #3
  shrn2 v14.8h, v16.4s, #3
  shrn2 v15.8h, v16.4s, #3

Initialization

  movi v16.16b, 17

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.2502

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

retire uop (01)	cycle (02)	03	1e	3f	51	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)	60	69	6d	6e	map stall dispatch (70)	map rewind (75)	map stall (76)	dispatch uop (78)	map int uop (7c)	map simd uop (7e)	map int uop inputs (7f)	map simd uop inputs (81)	82	83	flush restart other nonspec (84)	85	inst all (8c)	inst branch (8d)	inst branch taken (90)	inst branch cond (94)	inst int alu (97)	inst simd alu (9a)	9f	ac	branch cond mispred nonspec (c5)	branch mispred nonspec (cb)	cd	cf	d5	map dispatch bubble (d6)	dd	fetch restart (de)	e0	ea	eb	? simd retires (ee)	? int retires (ef)	f5	f6	f7	f8	fd
160204	40058	300	0	1467	25	160108	100	160008	100	160020	500	1280132	1	40020	40039	40039	19977	6	19990	160120	200	160032	200	320064	40039	40039	1	1	160201	100	99	100	100	160000	100	0	1	1	1	10118	2	16	3	4	40036	0	0	160000	100	40040	40040	40040	40040	40040
160204	40039	300	0	51	25	160108	100	160008	100	160020	500	1280132	1	40020	40039	40039	19977	6	19990	160120	200	160032	200	320064	40039	40039	1	1	160201	100	99	100	100	160000	100	0	1	1	1	10118	3	16	4	3	40036	0	0	160000	100	40040	40040	40040	40040	40040
160204	40039	300	0	30	25	160108	100	160008	100	160020	500	1280132	1	40020	40039	40039	19977	6	19990	160120	200	160032	200	320064	40039	40039	1	1	160201	100	99	100	100	160000	100	0	1	1	1	10118	3	16	4	3	40036	0	0	160000	100	40040	40040	40040	40040	40040
160204	40039	300	0	30	25	160108	100	160008	100	160020	500	1280132	1	40020	40039	40039	19977	6	19990	160120	200	160032	200	320064	40039	40039	1	1	160201	100	99	100	100	160000	100	0	1	1	1	10118	4	16	2	4	40036	0	6	160000	100	40040	40040	40040	40040	40040
160204	40039	300	0	30	25	160108	100	160008	100	160020	500	1280132	0	40020	40039	40039	19977	6	19990	160120	200	160032	200	320064	40039	40039	1	1	160201	100	99	100	100	160000	100	0	1	1	1	10118	4	16	4	4	40036	0	0	160000	100	40040	40040	40040	40040	40040
160204	40039	300	0	30	25	160108	110	160008	100	160020	500	1280132	0	40020	40039	40039	19977	6	19990	160120	200	160032	200	320064	40039	40039	1	1	160201	100	99	100	100	160000	100	0	1	1	1	10118	3	16	3	3	40036	0	0	160000	100	40040	40040	40040	40040	40040
160204	40039	300	0	30	25	160108	100	160008	100	160020	500	1280132	0	40020	40039	40039	19977	6	19990	160120	200	160032	200	320064	40039	40039	1	1	160201	100	99	100	100	160000	100	0	1	1	1	10118	3	16	3	3	40036	0	0	160000	100	40040	40040	40040	40040	40040
160204	40039	300	0	220	25	160108	100	160008	100	160020	500	1280132	0	40020	40039	40039	19977	6	19990	160120	200	160032	200	320064	40039	40039	1	1	160201	100	99	100	100	160000	100	132	1	1	1	10118	3	16	3	4	40036	0	0	160000	100	40040	40040	40040	40040	40040
160204	40039	300	0	30	25	160108	100	160008	100	160020	500	1280132	0	40020	40039	40039	19977	6	19990	160120	200	160032	200	320064	40039	40039	1	1	160201	100	99	100	100	160000	100	0	1	1	1	10118	4	16	4	3	40036	0	0	160000	100	40040	40040	40040	40040	40040
160204	40039	299	0	281	25	160108	100	160008	100	160020	500	1280132	0	40020	40039	40039	19977	6	19990	160120	200	160032	200	320064	40039	40039	1	1	160201	100	99	100	100	160000	100	0	1	1	1	10118	3	16	3	4	40036	0	0	160000	100	40040	40040	40040	40040	40040

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.2502

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

retire uop (01)	cycle (02)	03	mmu table walk instruction (07)	mmu table walk data (08)	l2 tlb miss instruction (0a)	18	19	1e	1f	3f	51	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)	5f	60	61	69	6d	6e	map stall dispatch (70)	map rewind (75)	map stall (76)	dispatch uop (78)	map int uop (7c)	map simd uop (7e)	map int uop inputs (7f)	map simd uop inputs (81)	82	83	flush restart other nonspec (84)	85	inst all (8c)	inst branch (8d)	inst branch taken (90)	inst branch cond (94)	inst int alu (97)	inst simd alu (9a)	9f	l1d tlb access (a0)	l1d tlb miss (a1)	l1d cache writeback (a8)	ac	c2	cf	d0	d2	l1i cache miss demand (d3)	d5	map dispatch bubble (d6)	d9	da	db	dd	fetch restart (de)	e0	ea	eb	? simd retires (ee)	? int retires (ef)	f5	f6	f7	f8	fd
160024	40050	299	0	0	0	0	0	0	0	305	25	160010	10	160000	10	160000	50	1280000	1	0	0	40020	40039	40039	19996	3	20019	160010	20	160000	20	320000	40039	40039	1	1	160021	10	9	10	10	160000	10	0	0	0	0	0	10022	3	1	1	5	16	4	1	1	3	4	40036	40	6	160000	10	40040	40040	40040	40040	40040
160024	40039	300	0	0	0	0	0	0	0	455	25	160010	10	160000	10	160000	50	1280000	1	1	0	40020	40039	40039	19996	3	20019	160010	20	160000	20	320000	40039	40039	1	1	160021	10	9	10	10	160000	10	0	0	0	0	0	10022	3	2	1	4	16	2	1	1	4	4	40036	40	12	160000	10	40040	40040	40040	40040	40040
160024	40039	300	0	0	0	0	0	0	0	717	25	160010	11	160000	10	160000	50	1280000	1	0	5	40020	40039	40039	19996	3	20019	160010	20	160000	20	320000	40039	40039	1	1	160021	10	9	10	10	160000	10	0	0	0	0	0	10022	3	1	1	4	16	2	1	1	4	3	40036	40	13	160000	10	40249	40558	40562	40505	40502
160024	40559	303	0	1	1	10	8	1455	792	1864	210	160983	10	160883	10	160621	50	1288228	1	0	5	40428	40510	40554	20070	44	20284	160965	20	160952	20	322098	40349	40557	12	1	160021	10	9	10	10	160000	10	2	2	1	2845	0	10201	3	1	1	3	64	4	2	1	4	4	40437	20	6	160000	10	40611	40555	40297	40606	40555
160024	40576	304	2	1	0	11	5	1461	880	1977	206	160983	10	160917	11	161157	50	1284156	1	1	0	40465	40606	40607	20088	47	20311	161053	20	161058	20	322116	40502	40613	8	1	160021	10	9	10	10	160000	10	0	0	0	0	0	10022	8	2	1	4	16	2	1	1	4	4	40036	40	12	160000	10	40040	40040	40040	40040	40040
160024	40039	300	0	0	1	0	0	0	0	491	25	160010	10	160000	10	160106	50	1280000	0	0	5	40020	40039	40039	19996	3	20019	160010	20	160000	20	320000	40039	40039	1	1	160021	10	9	10	10	160000	10	0	0	0	0	0	10022	3	1	1	4	16	2	1	1	4	3	40036	20	6	160000	10	40040	40040	40040	40040	40040
160024	40039	300	0	0	0	0	0	0	0	344	25	160010	10	160000	10	160000	50	1280000	1	0	0	40020	40039	40039	19996	3	20019	160010	20	160000	20	320000	40039	40039	1	1	160021	10	9	10	10	160000	10	0	0	0	0	0	10022	11	3	1	3	16	2	1	1	3	4	40036	40	12	160000	10	40040	40040	40040	40040	40040
160024	40039	300	0	0	0	0	0	0	0	512	25	160010	10	160000	10	160000	50	1280000	1	0	0	40020	40039	40039	19996	3	20019	160010	20	160000	20	320000	40039	40039	1	1	160021	10	9	10	10	160000	10	0	0	0	0	0	10022	8	1	1	4	16	4	1	1	3	4	40036	20	6	160000	10	40040	40040	40040	40040	40040
160024	40039	300	0	0	0	0	0	0	0	468	25	160010	10	160000	10	160000	50	1280000	1	1	0	40020	40039	40039	19996	3	20019	160010	20	160000	20	320000	40039	40039	1	1	160021	10	9	10	10	160000	10	0	0	0	0	0	10022	11	3	1	4	16	2	2	1	4	4	40036	40	12	160000	10	40040	40040	40040	40040	40040
160024	40039	299	0	0	0	0	0	0	0	52	25	160010	10	160000	10	160000	50	1282456	1	1	5	40020	40039	40039	19996	3	20019	160010	20	160000	20	320000	40039	40039	1	1	160021	10	9	10	10	160000	10	0	0	0	0	4	10022	8	2	1	4	16	2	1	1	3	4	40036	20	6	160000	10	40040	40040	40040	40040	40040

SHRN2 (4S)

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