Icestorm: STNP (Q) measurements

Code:

  stnp q0, q1, [x6]
  nop ; nop ; nop ; nop ; nop ; nop ; nop

Initialization

  mov x0, 0

(no loop instructions)

1000 unrolls and 1 iteration

Retires (minus 7 nops): 2.000

Issues: 2.000

Integer unit issues: 0.001

Load/store unit issues: 2.000

SIMD/FP unit issues: 0.000

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

retire uop (01)	cycle (02)	schedule uop (52)	schedule int uop (53)	schedule ldst uop (55)	dispatch ldst uop (58)	simd uops in schedulers (5a)	dispatch uop (78)	map ldst uop (7d)	map ldst uop inputs (80)	? int output thing (e9)	? ldst retires (ed)
9005	4067	2019	1	2018	2000	8843	2000	2000	4000	1	2000
9004	2386	2001	1	2000	2000	9203	2000	2000	4000	1	2000
9004	2309	2001	1	2000	2000	9197	2000	2000	4000	1	2000
9004	2302	2001	1	2000	2000	9197	2000	2000	4000	1	2000
9004	2302	2001	1	2000	2000	9197	2000	2000	4000	1	2000
9004	2302	2001	1	2000	2000	9197	2000	2000	4000	1	2000
9004	2302	2001	1	2000	2000	9197	2000	2000	4000	1	2000
9004	2302	2001	1	2000	2000	9197	2000	2000	4000	1	2000
9004	2302	2001	1	2000	2000	9197	2000	2000	4000	1	2000
9004	2302	2001	1	2000	2000	9197	2000	2000	4000	1	2000

Count: 8

Code:

  stnp q0, q1, [x6]
  stnp q0, q1, [x6]
  stnp q0, q1, [x6]
  stnp q0, q1, [x6]
  stnp q0, q1, [x6]
  stnp q0, q1, [x6]
  stnp q0, q1, [x6]
  stnp q0, q1, [x6]

Initialization

  mov x7, x6
  mov x8, x6
  mov x9, x6
  mov x10, x6
  mov x11, x6
  mov x12, x6
  mov x13, x6

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 2.0753

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

retire uop (01)	cycle (02)	schedule uop (52)	schedule int uop (53)	schedule ldst uop (55)	dispatch int uop (56)	dispatch ldst uop (58)	int uops in schedulers (59)	simd uops in schedulers (5a)	dispatch uop (78)	map int uop (7c)	map ldst uop (7d)	map int uop inputs (7f)	map ldst uop inputs (80)	? int output thing (e9)	? ldst retires (ed)	? int retires (ef)
160205	160150	160119	101	160018	100	160001	300	2826768	160101	200	160008	200	320016	1	160000	100
160204	165978	160101	101	160000	100	160001	300	2826804	160101	200	160008	200	320016	1	160000	100
160205	166011	160118	101	160017	100	160001	300	2826804	160101	200	160008	200	320016	1	160000	100
160204	165978	160101	101	160000	100	160001	300	2826804	160101	200	160008	200	320016	1	160000	100
160204	165978	160101	101	160000	100	160001	300	2826804	160101	200	160008	200	320096	1	160000	100
160204	165978	160101	101	160000	100	160000	300	2828313	160100	200	160008	200	320016	1	160000	100
160204	166028	160101	101	160000	100	160001	300	2827704	160101	200	160008	200	320016	1	160000	100
160204	166028	160101	101	160000	100	160001	300	2827704	160101	200	160008	200	320016	1	160000	100
160205	166059	160118	101	160017	100	160001	300	2827704	160101	200	160008	200	320016	1	160000	100
160204	166028	160101	101	160000	100	160001	300	2827704	160101	200	160008	200	320016	1	160000	100

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 2.0753

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)	dispatch ldst uop (58)	int uops in schedulers (59)	simd uops in schedulers (5a)	dispatch uop (78)	map int uop (7c)	map ldst uop (7d)	map int uop inputs (7f)	map ldst uop inputs (80)	? int output thing (e9)	? ldst retires (ed)	? int retires (ef)
160026	160197	160046	11	0	160035	10	0	160003	30	2826762	160013	20	160010	20	320000	1	160000	10
160024	165978	160011	11	0	160000	10	0	160000	30	2826801	160010	20	160000	20	320000	1	160000	10
160024	165978	160011	11	0	160000	10	0	160000	30	2826801	160010	20	160000	20	320000	1	160000	10
160024	165978	160011	11	0	160000	10	0	160000	30	2826801	160010	20	160000	20	320096	1	160000	10
160024	165978	160011	11	0	160000	10	0	160000	30	2826801	160010	20	160000	20	320000	1	160000	10
160024	165978	160011	11	0	160000	10	0	160000	30	2826801	160010	20	160000	20	320000	1	160000	10
160024	165978	160011	11	0	160000	10	0	160000	30	2826801	160010	20	160000	20	320000	1	160000	10
160024	165978	160011	11	0	160000	10	0	160034	30	2826932	160044	20	160048	20	320000	1	160000	10
160024	165978	160011	11	0	160000	10	0	160000	30	2826801	160010	20	160000	20	320000	1	160000	10
160024	165978	160011	11	0	160000	10	0	160000	30	2826801	160010	20	160000	20	320000	1	160000	10

STNP (Q)

Test 1: uops

1000 unrolls and 1 iteration

Test 2: throughput

100 unrolls and 100 iterations

1000 unrolls and 10 iterations