Firestorm: UXTB measurements

Code:

  uxtb w0, w0

Initialization

  mov x0, 1
  mov x1, 2

(no loop instructions)

1000 unrolls and 1 iteration

Retires: 1.000

Issues: 1.000

Integer unit issues: 1.000

Load/store unit issues: 0.000

SIMD/FP unit issues: 0.000

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

retire uop (01)	cycle (02)	03	3f	4d	51	schedule uop (52)	schedule int uop (53)	dispatch int uop (56)	int uops in schedulers (59)	6d	6e	map stall dispatch (70)	map rewind (75)	map stall (76)	dispatch uop (78)	map int uop (7c)	map int uop inputs (7f)	82	83	flush restart other nonspec (84)	85	inst all (8c)	inst int alu (97)	l1d cache writeback (a8)	ac	cf	d5	map dispatch bubble (d6)	dd	fetch restart (de)	e0	? int output thing (e9)	? int retires (ef)	f5	f6	f7	f8	fd
1004	1035	7	61	862	25	1000	1000	1000	16916	1035	1035	728	3	868	1000	1000	1000	1035	41	1	1	1001	1000	0	0	73	2	41	1	1	937	1000	1000	1036	1036	1036	1036	1036
1004	1035	8	61	862	25	1000	1000	1000	16916	1035	1035	728	3	868	1000	1000	1000	1035	41	1	1	1001	1000	0	0	73	1	41	1	1	937	1000	1000	1036	1036	1036	1036	1036
1004	1035	8	61	862	25	1000	1000	1000	16916	1035	1035	728	3	868	1000	1000	1000	1035	41	1	1	1001	1000	0	0	73	1	41	1	1	937	1000	1000	1036	1036	1036	1036	1036
1004	1035	7	61	862	25	1000	1000	1000	16916	1035	1035	728	3	868	1000	1000	1000	1035	41	1	1	1001	1000	0	0	73	1	41	1	1	937	1000	1000	1036	1036	1036	1036	1036
1004	1035	8	61	862	25	1000	1000	1000	16916	1035	1035	728	3	868	1000	1000	1000	1035	41	1	1	1001	1000	0	0	73	1	41	1	1	937	1000	1000	1036	1036	1036	1036	1036
1004	1035	8	61	862	25	1000	1000	1000	16916	1035	1035	728	3	868	1000	1000	1000	1035	41	1	1	1001	1000	0	0	73	1	41	1	1	937	1000	1000	1036	1036	1036	1036	1036
1004	1035	8	61	862	25	1000	1000	1000	16916	1035	1035	728	3	868	1000	1000	1000	1035	41	1	1	1001	1000	0	0	73	1	41	1	1	937	1000	1000	1036	1036	1036	1036	1036
1004	1035	7	61	862	25	1000	1000	1000	16916	1035	1035	728	3	868	1000	1000	1000	1035	41	1	1	1001	1000	0	0	73	1	41	1	1	937	1000	1000	1036	1036	1036	1036	1036
1004	1035	7	61	862	25	1000	1000	1000	16916	1035	1035	728	3	868	1000	1000	1000	1035	41	1	1	1001	1000	1	0	94	1	41	1	1	937	1000	1000	1036	1036	1036	1036	1036
1004	1035	8	61	862	25	1000	1000	1000	16916	1035	1035	728	3	868	1000	1000	1000	1035	41	1	1	1001	1000	0	0	73	1	41	1	1	937	1000	1000	1036	1036	1036	1036	1036

Test 2: Latency 1->2

Code:

  uxtb w0, w0

Initialization

  mov x0, 1
  mov x1, 2

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 1.0035

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

retire uop (01)	cycle (02)	03	l2 tlb miss data (0b)	1e	3f	4d	51	schedule uop (52)	schedule int uop (53)	dispatch int uop (56)	int uops in schedulers (59)	60	69	6a	6b	6d	6e	map stall dispatch (70)	int prf full (71)	map rewind (75)	map stall (76)	dispatch uop (78)	map int uop (7c)	map int uop inputs (7f)	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)	9f	cf	d5	map dispatch bubble (d6)	dd	fetch restart (de)	e0	? int output thing (e9)	? int retires (ef)	f5	f6	f7	f8	fd
10204	10035	75	0	141	61	9877	25	10100	10100	10100	88664	0	49	6955	0	10035	10035	8580	0	3	8722	10100	10200	10200	10035	41	1	1	10201	100	99	100	10100	100	710	1	37	1	1	9941	10000	10100	10036	10036	10036	10036	10036
10204	10035	75	0	18	61	9877	25	10100	10100	10100	88664	1	49	6955	0	10035	10035	8580	0	3	8722	10100	10200	10200	10035	41	1	1	10201	100	99	100	10100	100	710	1	37	1	1	9941	10000	10100	10036	10036	10036	10036	10036
10204	10035	75	0	0	61	9877	25	10100	10100	10100	88664	1	49	6955	0	10035	10035	8580	0	3	8722	10100	10200	10200	10035	41	1	1	10201	100	99	100	10100	100	710	1	37	1	1	9941	10000	10100	10036	10036	10036	10036	10036
10204	10035	75	0	54	61	9877	25	10100	10100	10100	88664	1	49	6955	0	10035	10035	8580	0	3	8722	10100	10200	10200	10035	41	1	1	10201	100	99	100	10100	100	710	1	37	1	1	9941	10000	10100	10036	10036	10036	10036	10036
10204	10035	75	0	24	61	9877	25	10100	10100	10100	88664	1	49	6955	0	10035	10035	8580	0	3	8722	10100	10200	10200	10035	41	1	1	10201	100	99	100	10100	100	710	1	37	1	1	9941	10000	10100	10036	10036	10036	10036	10036
10204	10035	75	0	6	61	9877	25	10100	10100	10100	88664	1	49	6955	0	10035	10035	8580	0	3	8722	10100	10200	10200	10035	41	1	1	10201	100	99	100	10100	100	710	1	37	1	1	9941	10000	10100	10036	10036	10036	10036	10036
10204	10035	75	0	0	61	9877	25	10100	10100	10100	88664	1	49	6955	0	10035	10035	8580	0	3	8722	10100	10200	10200	10035	41	1	1	10201	100	99	100	10100	100	710	1	37	1	1	9941	10000	10100	10036	10036	10036	10036	10036
10204	10035	75	0	0	61	9877	25	10100	10100	10100	88664	1	49	6955	0	10035	10035	8580	0	3	8722	10100	10200	10200	10035	41	1	1	10201	100	99	100	10100	100	710	1	37	1	1	9941	10000	10100	10036	10036	10036	10036	10036
10204	10035	75	0	12	61	9877	25	10100	10100	10100	88664	0	49	6955	0	10035	10035	8580	0	3	8722	10100	10200	10200	10035	41	1	1	10201	100	99	100	10100	100	710	1	37	1	1	9941	10000	10100	10036	10036	10036	10036	10036
10204	10035	75	0	0	84	9877	25	10100	10100	10100	88664	0	49	6955	0	10035	10035	8580	0	3	8722	10100	10200	10200	10035	41	1	1	10201	100	99	100	10100	100	710	1	37	1	1	9941	10000	10100	10036	10036	10036	10036	10036

1000 unrolls and 10 iterations

Result (median cycles for code): 1.0035

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

retire uop (01)	cycle (02)	03	mmu table walk instruction (07)	l2 tlb miss instruction (0a)	1e	3a	3f	4d	51	schedule uop (52)	schedule int uop (53)	dispatch int uop (56)	int uops in schedulers (59)	60	69	6a	6d	6e	map stall dispatch (70)	map rewind (75)	map stall (76)	dispatch uop (78)	map int uop (7c)	map int uop inputs (7f)	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)	9f	l1d cache writeback (a8)	ac	cf	d5	map dispatch bubble (d6)	dd	fetch restart (de)	e0	? int output thing (e9)	? int retires (ef)	f5	f6	f7	f8	fd
10024	10035	75	1	1	0	3	133	9863	25	10010	10010	10010	88784	1	49	6955	10035	10035	8602	3	8740	10010	10020	10020	10035	41	1	1	10021	10	9	10	10010	10	0	0	646	11	41	11	13	9940	10000	10010	10036	10036	10036	10036	10036
10024	10035	75	1	1	0	3	68	9863	25	10010	10010	10010	88784	0	49	6955	10035	10035	8602	3	8740	10010	10020	10020	10035	41	1	1	10021	10	9	10	10010	10	0	0	646	11	41	11	12	9940	10000	10010	10036	10036	10036	10036	10036
10024	10035	75	1	1	0	3	68	9863	25	10010	10010	10010	88784	1	49	6955	10035	10035	8602	3	8740	10010	10020	10020	10035	41	1	1	10021	10	9	10	10010	10	0	0	646	13	41	13	13	9940	10000	10010	10036	10036	10036	10036	10036
10024	10035	75	1	1	0	3	68	9863	25	10010	10010	10010	88784	0	49	6955	10035	10035	8602	3	8740	10010	10020	10020	10035	41	1	1	10021	10	9	10	10010	10	0	0	646	12	41	11	12	9940	10000	10010	10036	10036	10036	10036	10036
10024	10035	75	1	1	0	3	91	9863	25	10010	10010	10010	88784	1	49	6955	10035	10035	8602	3	8740	10010	10020	10020	10035	41	1	1	10021	10	9	10	10010	10	0	0	646	8	41	13	13	9940	10000	10010	10036	10036	10036	10036	10036
10024	10035	75	1	1	0	3	89	9863	25	10010	10010	10010	88784	1	49	6955	10035	10035	8602	3	8740	10010	10020	10020	10035	41	1	1	10021	10	9	10	10010	10	0	0	646	6	41	11	13	9940	10000	10010	10036	10036	10036	10036	10036
10024	10035	75	1	1	0	3	91	9863	25	10010	10010	10010	88784	0	49	6955	10035	10035	8602	3	8740	10010	10020	10020	10035	41	1	1	10021	10	9	10	10010	10	0	0	646	11	41	11	13	9940	10000	10010	10036	10036	10036	10036	10036
10024	10035	75	1	1	0	3	254	9863	25	10010	10010	10010	88784	1	49	6955	10035	10035	8602	3	8740	10010	10020	10020	10035	41	1	1	10021	10	9	10	10010	10	0	0	646	11	41	6	11	9940	10000	10010	10036	10036	10036	10036	10036
10024	10035	75	1	1	0	3	496	9863	25	10010	10010	10010	88784	1	49	6955	10035	10035	8602	3	8740	10010	10020	10020	10035	41	1	1	10021	10	9	10	10010	10	0	0	646	11	41	12	12	9940	10000	10010	10036	10036	10036	10036	10036
10024	10035	75	1	1	0	3	68	9863	25	10010	10010	10010	88784	1	49	6955	10035	10035	8602	3	8740	10010	10020	10020	10035	41	1	1	10021	10	9	10	10010	10	0	0	646	6	41	11	11	9940	10000	10010	10036	10036	10036	10036	10036

Test 3: throughput

Count: 8

Code:

  uxtb w0, w8
  uxtb w1, w8
  uxtb w2, w8
  uxtb w3, w8
  uxtb w4, w8
  uxtb w5, w8
  uxtb w6, w8
  uxtb w7, w8

Initialization

  mov x8, 9

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.1674

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

retire uop (01)	cycle (02)	03	mmu table walk data (08)	l2 tlb miss data (0b)	18	19	1e	1f	3a	3f	51	schedule uop (52)	schedule int uop (53)	dispatch int uop (56)	int uops in schedulers (59)	60	69	6a	6b	6d	6e	map stall dispatch (70)	int prf full (71)	map rewind (75)	map stall (76)	dispatch uop (78)	map int uop (7c)	map int uop inputs (7f)	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)	9f	l1d tlb access (a0)	l1d tlb miss (a1)	ld unit uop (a6)	st unit uop (a7)	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)	? int retires (ef)	f5	f6	f7	f8	fd
80204	13414	100	0	0	0	0	0	0	0	28	27	80136	80136	80148	400710	1	49	10310	0	13390	13390	3326	0	6	3336	80148	80264	80264	13390	39	1	1	80201	100	99	100	80100	100	0	0	0	0	0	0	3	0	1	1	1	5119	1	16	0	0	13387	80036	80100	13391	13391	13391	13391	13391
80204	13390	100	0	0	0	0	0	0	0	28	27	80136	80136	80148	400710	0	49	10310	0	13390	13390	3326	0	6	3336	80148	80264	80264	13390	39	1	1	80201	100	99	100	80100	100	0	0	0	0	0	0	0	0	1	1	1	5119	0	16	0	0	13387	80036	80100	13391	13391	13391	13391	13391
80204	13390	101	0	0	0	0	0	0	0	28	27	80136	80136	80148	400710	0	49	10310	0	13390	13390	3326	0	6	3336	80148	80264	80264	13390	39	1	1	80201	100	99	100	80100	100	0	0	0	0	2	0	3	0	1	1	1	5119	0	16	0	0	13387	80036	80100	13391	13391	13391	13391	13391
80204	13390	100	0	0	0	0	0	0	0	28	27	80136	80136	80148	400710	0	49	10310	0	13390	13390	3326	0	6	3336	80148	80264	80264	13390	39	1	1	80201	100	99	100	80100	100	0	0	0	0	0	0	12	0	1	1	1	5119	0	16	0	0	13387	80036	80100	13391	13391	13391	13391	13391
80204	13390	101	0	0	0	0	0	0	0	28	27	80136	80136	80148	400710	0	49	10310	0	13390	13390	3326	0	6	3336	80148	80264	80264	13390	39	1	1	80201	100	99	100	80100	100	0	0	0	0	22	0	87	0	1	1	1	5119	0	16	0	0	13387	80036	80100	13391	13391	13391	13391	13391
80204	13390	100	0	0	0	0	0	0	0	28	27	80136	80136	80148	400710	0	49	10310	0	13390	13390	3326	0	6	3336	80148	80264	80264	13390	39	1	1	80201	100	99	100	80100	100	0	0	0	0	0	0	0	0	1	1	1	5119	0	16	0	0	13387	80036	80100	13391	13391	13391	13391	13391
80204	13390	100	0	0	0	0	0	0	0	70	27	80136	80136	80148	400710	0	49	10310	0	13390	13390	3326	0	6	3336	80148	80264	80264	13390	39	1	1	80201	100	99	100	80100	100	0	0	0	0	0	0	48	0	1	1	1	5119	0	16	0	0	13387	80036	80100	13391	13391	13391	13391	13391
80204	13390	101	0	0	0	0	0	0	0	28	27	80136	80136	80148	400710	0	49	10310	0	13390	13390	3326	0	6	3336	80148	80264	80264	13390	39	1	1	80201	100	99	100	80100	100	0	0	0	0	0	0	36	0	1	1	1	5119	0	16	0	0	13387	80036	80100	13391	13391	13391	13391	13391
80204	13390	101	0	0	0	0	0	0	0	28	27	80136	80136	80148	400710	0	49	10310	0	13390	13390	3326	0	6	3336	80148	80264	80264	13390	39	1	1	80201	100	99	100	80100	100	0	0	0	0	6	0	0	0	1	1	1	5119	0	16	0	0	13387	80036	80100	13391	13391	13391	13391	13391
80204	13390	101	0	0	0	0	0	0	0	28	27	80136	80136	80148	400710	0	49	10310	0	13390	13390	3326	0	6	3336	80148	80264	80264	13390	39	1	1	80201	100	99	100	80100	100	0	0	0	0	0	0	0	0	1	1	1	5119	0	16	0	0	13387	80036	80100	13391	13391	13391	13391	13391

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.1671

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

retire uop (01)	cycle (02)	03	mmu table walk data (08)	09	18	19	1e	1f	3a	3f	51	schedule uop (52)	schedule int uop (53)	dispatch int uop (56)	int uops in schedulers (59)	5f	60	69	6a	6d	6e	map stall dispatch (70)	map rewind (75)	map stall (76)	dispatch uop (78)	map int uop (7c)	map int uop inputs (7f)	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)	9f	l1d tlb access (a0)	l1d tlb miss (a1)	ld unit uop (a6)	l1d cache writeback (a8)	a9	ac	c2	cf	d5	map dispatch bubble (d6)	d9	dd	fetch restart (de)	e0	? int output thing (e9)	? int retires (ef)	f5	f6	f7	f8	fd
80024	13607	101	0	1	3	3	399	264	0	657	141	80397	80401	80535	402620	0	0	49	10488	13552	13614	3332	15	3400	80543	80423	80423	13553	39	4	1	80021	10	9	10	80010	10	0	0	0	0	0	1370	2	5100	9	121	0	7	3	13582	80645	80010	13616	13674	13667	13618	13673
80024	13612	102	0	1	4	4	540	0	0	891	152	80529	80531	80542	403351	0	0	49	10534	13619	13612	3332	20	3424	80010	80556	80699	13615	39	5	1	80021	10	9	10	80010	10	2	2	0	0	0	1843	0	5100	5	119	0	7	3	13368	80000	80010	13434	13498	13570	13555	13491
80024	13478	101	1	1	3	4	408	0	1	98	119	80394	80010	80541	402641	0	0	49	10474	13594	13555	3330	21	3422	80147	80020	80425	13554	39	4	1	80021	10	9	10	80010	10	0	0	3	1	2	0	0	5080	5	96	0	5	3	13563	80635	80010	13552	13372	13612	13558	13555
80024	13603	100	1	1	3	3	408	88	0	482	25	80010	80010	80010	400050	0	0	49	10291	13371	13371	3330	3	3348	80010	80151	80020	13371	39	1	1	80021	10	9	10	80010	10	0	0	0	0	0	0	0	5021	3	19	0	3	6	13368	80000	80010	13372	13372	13372	13372	13372
80024	13371	100	0	0	0	0	0	0	0	35	25	80010	80010	80010	400050	0	0	49	10291	13371	13371	3330	3	3348	80010	80020	80020	13371	39	1	1	80021	10	9	10	80010	10	0	0	0	0	0	0	0	5021	5	19	0	6	6	13368	80000	80010	13372	13372	13372	13372	13372
80024	13371	100	0	0	0	0	0	0	0	77	25	80010	80010	80010	400050	1	1	49	10291	13371	13371	3330	3	3348	80010	80020	80020	13371	39	1	1	80021	10	9	10	80010	10	0	0	0	0	0	0	0	5020	3	19	0	4	5	13368	80000	80010	13372	13372	13372	13372	13372
80024	13371	100	0	0	0	0	0	0	0	35	25	80010	80010	80010	400050	0	0	49	10291	13371	13371	3330	3	3348	80010	80020	80020	13371	39	1	1	80021	10	9	10	80010	10	0	0	0	0	0	0	0	5021	5	19	0	5	5	13368	80000	80010	13372	13372	13372	13372	13372
80024	13371	100	0	0	0	0	0	0	0	35	25	80010	80010	80010	400050	0	0	49	10291	13371	13371	3330	3	3348	80010	80020	80020	13371	39	1	1	80021	10	9	10	80010	10	0	0	0	0	0	3	0	5021	5	19	0	5	3	13368	80000	80010	13372	13372	13372	13372	13372
80024	13371	100	0	0	0	0	0	0	0	35	25	80010	80010	80010	400050	0	0	49	10291	13371	13371	3330	3	3348	80010	80020	80020	13371	39	1	1	80021	10	9	10	80010	10	0	0	0	0	0	0	0	5021	5	19	0	4	5	13368	80000	80010	13372	13372	13372	13372	13372
80024	13371	100	0	0	0	0	0	0	0	35	25	80010	80010	80010	400050	0	0	49	10291	13371	13371	3330	3	3348	80010	80020	80020	13371	39	1	1	80021	10	9	10	80010	10	0	0	0	0	0	0	0	5021	3	19	0	5	6	13368	80000	80010	13372	13372	13372	13372	13372

UXTB

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