Icestorm: NEG (register, asr, 32-bit) measurements

Code:

  neg w0, w0, asr #17

Initialization

  mov x0, 1
  mov x1, 2

(no loop instructions)

1000 unrolls and 1 iteration

Retires: 1.000

Issues: 2.000

Integer unit issues: 2.001

Load/store unit issues: 0.000

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)	dispatch int uop (56)	int uops in schedulers (59)	dispatch uop (78)	map int uop (7c)	map int uop inputs (7f)	? int output thing (e9)	? int retires (ef)
1004	2030	2001	2001	1000	52265	1000	1000	1000	2001	1000
1004	2030	2001	2001	1000	52265	1000	1000	1000	2001	1000
1004	2030	2001	2001	1000	52265	1000	1000	1000	2001	1000
1004	2030	2001	2001	1000	52265	1000	1000	1000	2001	1000
1004	2030	2001	2001	1000	52265	1000	1000	1000	2001	1000
1004	2030	2001	2001	1000	52265	1000	1000	1000	2001	1000
1004	2030	2001	2001	1000	52265	1000	1000	1000	2001	1000
1004	2030	2001	2001	1000	52265	1000	1000	1000	2001	1000
1004	2030	2001	2001	1000	52265	1000	1000	1000	2001	1000
1004	2030	2001	2001	1000	52265	1000	1000	1000	2001	1000

Test 2: Latency 1->2

Code:

  neg w0, w0, asr #17

Initialization

  mov x0, 1
  mov x1, 2

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 2.0030

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

retire uop (01)	cycle (02)	schedule uop (52)	schedule int uop (53)	dispatch int uop (56)	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 int uop inputs (7f)	? int output thing (e9)	? int retires (ef)
10204	20030	20101	20101	10104	0	529100	0	0	10104	10210	0	0	10210	20001	10100
10204	20030	20101	20101	10104	0	529186	0	0	10104	10212	0	0	10212	20001	10100
10204	20030	20101	20101	10104	0	529186	0	0	10104	10212	0	0	10212	20001	10100
10204	20030	20101	20101	10104	0	529186	0	0	10104	10212	0	0	10212	20001	10100
10204	20030	20101	20101	10104	0	529186	0	0	10104	10212	0	0	10212	20001	10100
10204	20030	20101	20101	10104	0	529186	0	0	10104	10212	0	0	10212	20001	10100
10204	20030	20101	20101	10104	0	529186	0	0	10104	10212	0	0	10212	20001	10100
10204	20030	20101	20101	10104	0	529186	0	0	10104	10212	0	0	10212	20001	10100
10204	20030	20101	20101	10104	0	529186	0	0	10104	10212	0	0	10212	20001	10100
10204	20030	20101	20101	10104	0	529186	0	0	10104	10212	0	0	10212	20001	10100

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0030

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)	dispatch uop (78)	map int uop (7c)	map int uop inputs (7f)	? int output thing (e9)	? int retires (ef)
10024	20030	20021	20021	0	0	10025	0	529197	10020	10020	10020	20011	10010
10024	20030	20021	20021	0	0	10020	0	529253	10020	10020	10020	20011	10010
10024	20030	20021	20021	0	0	10020	0	529253	10020	10020	10020	20011	10010
10024	20030	20021	20021	0	0	10020	0	529253	10020	10020	10020	20011	10010
10024	20030	20021	20021	0	0	10020	0	529253	10020	10020	10020	20011	10010
10024	20030	20021	20021	0	0	10020	0	529253	10020	10020	10020	20011	10010
10024	20030	20021	20021	0	0	10020	0	529253	10020	10020	10020	20011	10010
10024	20030	20021	20021	0	0	10020	0	529253	10020	10020	10020	20011	10010
10024	20030	20021	20021	0	0	10020	0	529253	10020	10020	10020	20011	10010
10024	20030	20021	20021	0	0	10020	0	529253	10020	10020	10020	20011	10010

Test 3: throughput

Count: 8

Code:

  neg w0, w8, asr #17
  neg w1, w8, asr #17
  neg w2, w8, asr #17
  neg w3, w8, asr #17
  neg w4, w8, asr #17
  neg w5, w8, asr #17
  neg w6, w8, asr #17
  neg w7, w8, asr #17

Initialization

  mov x8, 9

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.6675

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

retire uop (01)	cycle (02)	schedule uop (52)	schedule int uop (53)	dispatch int uop (56)	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 int uop inputs (7f)	? int output thing (e9)	? int retires (ef)
80204	53415	160116	160116	80129	0	1360300	0	0	80130	80236	0	0	80236	160016	80100
80204	53415	160116	160116	80130	0	1360838	0	0	80130	80236	0	0	80236	160017	80100
80204	53404	160117	160117	80130	0	1360838	0	0	80130	80236	0	0	80236	160017	80100
80204	53404	160117	160117	80130	0	1360838	0	0	80130	80236	0	0	80236	160017	80100
80204	53404	160117	160117	80130	0	1360838	0	0	80130	80236	0	0	80236	160017	80100
80204	53404	160117	160117	80130	0	1360838	0	0	80130	80236	0	0	80236	160017	80100
80204	53404	160117	160117	80130	0	1360838	0	0	80130	80236	0	0	80236	160017	80100
80204	53404	160117	160117	80130	0	1361165	0	0	80177	80288	0	0	80236	160017	80100
80204	53404	160117	160117	80130	0	1360838	0	0	80130	80236	0	0	80236	160017	80100
80204	53404	160117	160117	80130	0	1360838	0	0	80130	80236	0	0	80236	160017	80100

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.6671

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

retire uop (01)	cycle (02)	schedule uop (52)	schedule int uop (53)	dispatch int uop (56)	int uops in schedulers (59)	dispatch uop (78)	map int uop (7c)	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)
80024	53402	160039	160039	80051	1359903	80020	80020	80020	0	0	160011	0	0	80010
80024	53371	160021	160021	80020	1359903	80020	80020	80020	0	0	160011	0	0	80010
80024	53371	160021	160021	80020	1359903	80020	80020	80020	0	0	160011	0	0	80010
80024	53371	160021	160021	80020	1359903	80020	80020	80020	0	0	160011	0	0	80010
80024	53371	160021	160021	80020	1360558	80098	80112	80020	0	0	160011	0	0	80010
80024	53371	160021	160021	80020	1359903	80020	80020	80020	0	0	160011	0	0	80010
80024	53371	160021	160021	80020	1359903	80020	80020	80020	0	0	160011	0	0	80010
80024	53371	160021	160021	80020	1359903	80020	80020	80020	0	0	160011	0	0	80010
80024	53371	160021	160021	80020	1359903	80020	80020	80020	0	0	160011	0	0	80010
80024	53371	160021	160021	80020	1359903	80020	80020	80020	0	0	160011	0	0	80010

NEG (register, asr, 32-bit)

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