Firestorm: SQSHRN (H) measurements

Code:

  sqshrn b0, h0, #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	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	23	0	61	2547	25	1000	1000	1000	398160	1	3018	3037	3037	2414	3	2895	1000	1000	1000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2629	1000	3038	3038	3038	3038	3038
1004	3037	23	0	61	2547	25	1000	1000	1000	398160	0	3018	3037	3037	2414	3	2895	1000	1000	1000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2629	1000	3038	3038	3038	3038	3038
1004	3037	22	0	61	2547	25	1000	1000	1000	398160	0	3018	3037	3037	2414	3	2895	1000	1000	1000	3037	3037	1	1	1001	1000	1	0	73	1	16	1	1	2629	1000	3038	3038	3038	3038	3038
1004	3037	23	0	61	2547	25	1000	1000	1000	398160	0	3018	3037	3037	2414	3	2895	1000	1000	1000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2629	1000	3038	3038	3038	3038	3038
1004	3037	22	0	61	2547	25	1000	1000	1000	398160	0	3018	3037	3037	2414	3	2895	1000	1000	1000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2629	1000	3038	3038	3038	3038	3038
1004	3037	22	0	61	2547	25	1000	1000	1000	398160	0	3018	3037	3037	2414	3	2895	1000	1000	1000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2629	1000	3038	3038	3038	3038	3038
1004	3037	23	0	61	2547	25	1000	1000	1000	398160	0	3018	3037	3037	2414	3	2895	1000	1000	1000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2629	1000	3038	3038	3038	3038	3038
1004	3037	22	3	61	2547	25	1000	1000	1000	398160	0	3018	3037	3037	2414	3	2895	1000	1000	1000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2629	1000	3038	3038	3038	3038	3038
1004	3037	22	48	61	2547	25	1000	1000	1000	398160	1	3018	3037	3037	2414	3	2895	1000	1000	1000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2629	1000	3038	3038	3038	3038	3038
1004	3037	22	3	61	2547	25	1000	1000	1000	398160	1	3018	3037	3037	2414	3	2895	1000	1000	1000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2629	1000	3038	3038	3038	3038	3038

Test 2: Latency 1->2

Code:

  sqshrn b0, h0, #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	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)	simd prf full (72)	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	d5	map dispatch bubble (d6)	dd	fetch restart (de)	e0	? simd retires (ee)	? int retires (ef)	f5	f6	f7	f8	fd
10204	30037	225	0	61	29547	25	10100	100	10000	100	10000	500	4277160	0	30018	30037	30037	28264	0	3	28745	10100	200	10000	200	10000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	0	0	0	710	1	16	1	1	29633	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	61	29547	25	10100	100	10000	100	10000	500	4277160	1	30018	30037	30037	28264	0	3	28745	10100	200	10166	200	10000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	0	0	0	710	1	16	1	1	29633	10000	100	30038	30038	30038	30038	30038
10204	30037	224	0	61	29547	25	10100	100	10000	100	10000	500	4277160	0	30018	30037	30037	28264	0	3	28745	10100	200	10000	200	10000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	50	0	0	710	1	16	1	1	29633	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	61	29547	25	10100	100	10000	100	10000	500	4277160	0	30018	30037	30037	28264	0	3	28745	10100	200	10000	200	10000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	0	0	0	710	1	16	1	1	29633	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	61	29547	25	10100	100	10000	100	10000	548	4277160	0	30018	30037	30037	28264	0	3	28745	10100	200	10000	200	10000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	0	0	0	710	1	16	1	1	29633	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	61	29547	25	10100	100	10000	100	10000	500	4277160	0	30018	30037	30037	28264	0	3	28745	10100	200	10000	200	10000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	0	0	0	710	1	16	1	1	29633	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	61	29547	25	10100	100	10000	100	10000	500	4277160	0	30018	30037	30037	28264	0	3	28745	10100	204	10000	200	10000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	0	0	0	710	1	16	1	1	29633	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	61	29547	25	10100	100	10000	100	10000	500	4277160	0	30018	30037	30037	28264	0	3	28745	10100	200	10000	200	10000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	0	0	0	710	1	16	1	1	29633	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	61	29547	25	10100	100	10000	100	10000	500	4277160	0	30018	30037	30037	28264	0	3	28745	10100	200	10000	200	10000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	0	0	0	710	1	16	1	1	29633	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	61	29547	25	10100	100	10000	100	10000	500	4277160	0	30018	30037	30037	28264	0	3	28745	10100	200	10000	200	10000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	0	0	0	710	1	16	1	1	29633	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 instruction (07)	mmu table walk data (08)	l2 tlb miss instruction (0a)	l2 tlb miss data (0b)	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	6b	6d	6e	map stall dispatch (70)	simd prf full (72)	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)	st unit uop (a7)	l1d cache writeback (a8)	a9	ac	c2	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
10024	30037	225	1	0	1	0	0	0	0	0	2	71	29547	25	10010	10	10000	10	10000	50	4277160	1	30018	0	30037	30037	28286	0	3	28767	10010	20	10000	20	10000	30037	30225	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	0	0	0	644	10	16	10	11	29629	1	10000	10	30038	30038	30038	30038	30038
10024	30037	225	1	0	1	0	0	0	0	0	2	71	29547	25	10010	10	10000	10	10000	50	4277160	1	30018	0	30037	30037	28286	0	3	28767	10010	20	10000	20	10000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	0	0	0	644	10	16	10	10	29629	0	10000	10	30038	30038	30038	30038	30038
10024	30037	225	1	0	1	0	0	0	9	0	2	71	29547	25	10010	10	10000	10	10000	50	4277160	1	30018	0	30037	30037	28286	0	3	28767	10010	20	10000	20	10000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	0	0	0	644	10	16	11	10	29629	0	10000	10	30038	30038	30038	30038	30038
10024	30037	225	1	0	1	0	0	0	0	0	2	1124	29547	25	10010	10	10000	10	10000	50	4277160	1	30018	0	30037	30037	28286	0	3	28767	10010	20	10000	20	10000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	0	0	0	644	10	16	10	10	29629	0	10000	10	30038	30038	30038	30038	30038
10024	30037	225	1	0	1	0	0	0	0	0	2	71	29547	25	10010	10	10000	10	10000	50	4277160	1	30018	0	30037	30037	28286	0	3	28767	10010	20	10000	20	10000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	0	0	0	644	10	16	10	10	29629	0	10000	10	30038	30038	30038	30038	30038
10024	30037	225	1	0	1	0	0	0	0	0	2	71	29547	25	10010	10	10000	10	10000	50	4277160	1	30018	0	30037	30037	28286	0	3	28767	10010	22	10000	20	10000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	0	0	0	644	10	16	8	8	29629	0	10000	10	30038	30038	30038	30038	30038
10024	30037	225	1	0	1	0	0	0	0	0	2	71	29547	25	10010	10	10000	10	10000	50	4277160	1	30018	0	30037	30037	28286	0	3	28767	10010	20	10000	20	10000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	0	0	0	644	10	16	8	10	29629	0	10000	10	30038	30038	30038	30038	30038
10024	30037	225	1	0	1	0	0	0	0	0	2	71	29547	25	10010	10	10000	10	10000	50	4277160	1	30018	0	30037	30037	28286	0	3	28767	10010	20	10000	20	10000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	0	0	0	644	8	16	8	10	29629	0	10000	10	30038	30038	30038	30038	30038
10024	30037	225	1	0	1	0	0	0	0	0	2	71	29547	25	10010	10	10000	10	10000	50	4277160	1	30018	3	30037	30037	28286	0	3	28767	10010	20	10000	20	10000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	0	0	0	644	10	16	10	10	29629	0	10000	10	30038	30038	30038	30038	30038
10024	30037	225	1	0	1	0	0	0	0	0	2	71	29547	25	10010	10	10000	10	10000	50	4277160	1	30018	0	30037	30037	28286	0	3	28767	10010	20	10000	20	10000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	1	0	0	0	644	10	16	5	10	29629	0	10000	10	30038	30038	30038	30038	30038

Test 3: throughput

Count: 8

Code:

  sqshrn b0, h8, #3
  sqshrn b1, h8, #3
  sqshrn b2, h8, #3
  sqshrn b3, h8, #3
  sqshrn b4, h8, #3
  sqshrn b5, h8, #3
  sqshrn b6, h8, #3
  sqshrn b7, h8, #3

Initialization

  movi v8.16b, 9

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.2505

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)	18	19	1e	1f	3a	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	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	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
80204	20058	150	0	0	0	0	0	0	0	0	30	25	80108	100	80008	100	80020	500	640132	0	20020	20039	20039	9977	6	9990	80120	200	80032	200	80032	20039	20039	1	1	80201	100	99	100	100	80000	100	0	0	0	0	0	0	0	1	1	1	5118	0	16	0	0	20036	0	80000	100	20040	20040	20040	20040	20040
80204	20039	150	0	0	0	0	0	0	0	0	30	25	80108	100	80008	100	80020	500	640132	0	20020	20039	20039	9977	6	9990	80120	200	80032	200	80032	20039	20039	1	1	80201	100	99	100	100	80000	100	0	0	0	0	0	6	0	1	1	1	5118	0	16	0	0	20036	0	80000	100	20040	20040	20040	20040	20040
80204	20039	150	0	0	0	0	0	0	0	0	30	25	80108	100	80008	100	80020	500	640132	1	20020	20039	20039	9977	6	9990	80120	200	80032	200	80032	20039	20039	1	1	80201	100	99	100	100	80000	100	0	0	0	0	0	0	0	1	1	1	5118	0	16	0	0	20036	0	80000	100	20040	20040	20040	20040	20040
80204	20039	150	0	0	0	0	0	0	0	0	30	25	80108	100	80008	100	80020	500	640132	0	20020	20039	20039	9977	6	9990	80120	200	80142	200	80032	20039	20039	1	1	80201	100	99	100	100	80000	100	0	0	0	0	0	0	0	1	1	1	5118	0	16	0	0	20036	0	80000	100	20040	20040	20040	20040	20040
80204	20039	150	0	0	0	0	0	0	0	0	30	25	80108	100	80008	100	80020	500	640132	0	20020	20039	20039	9977	6	9990	80120	200	80032	200	80032	20039	20039	1	1	80201	100	99	100	100	80000	100	0	0	0	0	0	0	0	1	1	1	5118	0	16	0	0	20036	0	80000	100	20040	20040	20040	20040	20040
80204	20039	150	0	0	0	0	0	0	0	0	30	25	80108	100	80008	100	80020	500	640132	1	20020	20039	20039	9977	6	9990	80120	200	80032	200	80032	20039	20039	1	1	80201	100	99	100	100	80000	100	0	0	0	0	0	0	0	1	1	1	5118	0	16	0	0	20036	0	80000	100	20040	20040	20040	20040	20040
80204	20039	150	0	0	0	0	0	0	0	0	30	25	80108	100	80008	100	80020	500	640132	1	20020	20039	20039	9977	6	9990	80120	200	80032	200	80032	20039	20039	1	1	80201	100	99	100	100	80000	100	0	0	0	0	0	0	0	1	1	1	5118	0	16	0	0	20036	0	80000	100	20040	20040	20040	20040	20040
80204	20039	150	0	0	0	0	0	0	0	0	30	25	80108	100	80008	100	80020	500	640132	0	20020	20039	20039	9977	6	9990	80120	200	80032	200	80032	20039	20039	1	1	80201	100	99	100	100	80000	100	0	0	0	0	0	0	0	1	1	1	5118	0	16	0	0	20036	0	80000	100	20040	20040	20040	20040	20040
80204	20039	150	0	0	0	0	0	0	0	0	30	25	80108	100	80008	100	80020	500	640132	0	20020	20039	20039	9977	6	9990	80120	200	80032	200	80032	20039	20039	1	1	80201	100	99	100	100	80000	100	0	0	0	0	0	0	0	1	1	1	5118	0	16	0	0	20036	0	80000	100	20040	20040	20040	20040	20040
80204	20039	150	0	0	0	0	0	0	0	0	30	25	80108	100	80008	100	80020	500	640132	1	20020	20039	20039	9977	6	9990	80120	200	80032	200	80032	20039	20039	1	1	80201	100	99	100	100	80000	100	0	0	0	0	0	0	0	1	1	1	5118	0	16	0	0	20036	0	80000	100	20040	20040	20040	20040	20040

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.2505

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

retire uop (01)	cycle (02)	03	l2 tlb miss data (0b)	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)	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 cache writeback (a8)	a9	ac	cf	d0	d2	l1i cache miss demand (d3)	d5	map dispatch bubble (d6)	dd	fetch restart (de)	e0	? simd retires (ee)	? int retires (ef)	f5	f6	f7	f8	fd
80024	20050	150	0	0	0	40	25	80010	10	80000	10	80000	50	640000	0	0	20020	20039	20039	9996	3	10019	80010	20	80000	20	80000	20039	20039	1	1	80021	10	9	10	10	80000	10	0	0	0	0	5020	0	0	0	6	16	2	2	20036	80000	10	20040	20040	20040	20040	20040
80024	20039	150	0	0	0	40	25	80010	10	80000	10	80000	50	640000	0	0	20020	20039	20039	9996	3	10019	80010	20	80000	20	80000	20039	20039	1	1	80021	10	9	10	10	80000	10	0	0	0	0	5020	0	0	0	3	16	2	2	20036	80000	10	20040	20040	20040	20040	20040
80024	20039	150	0	0	0	40	25	80010	10	80000	10	80000	50	640000	1	0	20020	20039	20039	9996	3	10019	80010	20	80000	20	80412	20039	20039	1	1	80021	10	9	10	10	80000	10	0	0	0	0	5020	0	0	0	3	16	3	2	20036	80000	10	20040	20040	20040	20040	20040
80024	20039	150	0	0	0	40	25	80010	10	80000	10	80000	50	640000	0	0	20020	20039	20039	9996	3	10019	80010	20	80000	20	80000	20039	20039	1	1	80021	10	9	10	10	80000	10	0	0	0	0	5020	0	0	0	4	16	4	2	20036	80000	10	20040	20040	20040	20040	20040
80024	20039	150	0	0	486	40	25	80010	10	80000	10	80000	50	640000	1	0	20020	20039	20039	9996	3	10019	80010	20	80000	20	80000	20039	20039	1	1	80021	10	9	10	10	80000	10	0	0	0	0	5020	0	0	0	2	16	2	2	20036	80000	10	20040	20040	20040	20040	20040
80024	20039	150	0	0	0	40	25	80010	10	80000	10	80000	50	640000	0	0	20020	20039	20039	9996	3	10019	80010	20	80000	20	80000	20039	20039	1	1	80021	10	9	10	10	80000	10	0	0	0	0	5020	0	0	0	4	16	2	2	20036	80000	10	20040	20040	20040	20040	20040
80024	20039	150	0	0	0	40	25	80010	10	80000	10	80000	50	640000	1	0	20020	20039	20039	9996	3	10019	80010	20	80000	20	80000	20039	20039	1	1	80021	10	9	10	10	80000	10	0	0	0	0	5020	0	0	0	2	16	4	2	20036	80000	10	20040	20040	20040	20040	20040
80024	20039	150	0	0	0	40	25	80010	10	80000	10	80000	50	640000	0	0	20020	20039	20039	9996	3	10019	80222	20	80000	20	80000	20039	20039	1	1	80021	10	9	10	10	80000	10	0	0	0	0	5020	0	0	0	4	16	2	2	20036	80000	10	20040	20040	20040	20040	20040
80024	20039	150	0	0	0	40	25	80010	10	80000	10	80000	50	640000	1	0	20020	20039	20039	9996	3	10019	80010	20	80000	20	80000	20039	20039	1	1	80021	10	9	10	10	80000	10	0	0	0	0	5020	0	0	0	2	16	2	2	20036	80000	10	20040	20040	20040	20040	20040
80024	20039	150	0	0	0	40	25	80010	10	80000	10	80000	50	640000	1	0	20020	20039	20039	9996	3	10019	80010	20	80000	20	80000	20039	20039	1	1	80021	10	9	10	10	80000	10	0	0	0	0	5020	0	0	0	3	16	3	3	20036	80000	10	20040	20040	20040	20040	20040

SQSHRN (H)

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