Icestorm: LSL (register, 64-bit) measurements

Code:

  lsl x0, x0, x1

Initialization

  mov x0, 1
  mov x1, 2

(no loop instructions)

1000 unrolls and 1 iteration

Retires: 1.000

Issues: 1.000

Integer unit issues: 1.001

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)	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)
1004	1030	1001	1001	0	0	1000	0	25603	1000	1000	2000	1001	1000
1004	1030	1001	1001	0	0	1000	0	25603	1000	1000	2000	1001	1000
1004	1030	1001	1001	0	0	1000	0	25603	1000	1000	2000	1001	1000
1004	1030	1001	1001	0	0	1000	0	25603	1000	1000	2000	1001	1000
1004	1030	1001	1001	0	0	1000	0	25603	1000	1000	2000	1001	1000
1004	1030	1001	1001	0	0	1000	0	25603	1000	1000	2000	1001	1000
1004	1030	1001	1001	0	0	1000	0	25603	1000	1000	2000	1001	1000
1004	1030	1001	1001	0	0	1000	0	25603	1000	1000	2000	1001	1000
1004	1030	1001	1001	0	0	1000	0	25603	1000	1000	2000	1001	1000
1004	1030	1001	1001	0	0	1000	0	25603	1000	1000	2000	1001	1000

Test 2: Latency 1->2

Code:

  lsl x0, x0, x1

Initialization

  mov x0, 1
  mov x1, 2

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 1.0030

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)
10204	10030	10101	10101	0	0	10108	0	259433	10107	10214	20228	10001	10100
10204	10030	10101	10101	0	0	10107	0	259539	10107	10212	20224	10001	10100
10204	10030	10101	10101	0	0	10107	0	259539	10107	10212	20224	10001	10100
10204	10030	10101	10101	0	0	10107	0	259539	10107	10212	20224	10001	10100
10204	10030	10101	10101	0	0	10107	0	259539	10107	10212	20224	10001	10100
10204	10030	10101	10101	0	0	10107	0	259539	10107	10212	20224	10001	10100
10204	10030	10101	10101	0	0	10107	0	259539	10107	10212	20224	10001	10100
10204	10030	10101	10101	0	0	10107	0	259539	10107	10212	20224	10001	10100
10204	10030	10101	10101	0	0	10107	0	259539	10107	10212	20224	10001	10100
10204	10030	10101	10101	0	0	10107	0	259539	10107	10212	20224	10001	10100

1000 unrolls and 10 iterations

Result (median cycles for code): 1.0030

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)
10024	10030	10021	10021	10029	0	259628	0	0	10028	10036	0	0	20020	10011	10010
10024	10030	10021	10021	10020	0	259591	0	0	10020	10020	0	0	20020	10011	10010
10024	10030	10021	10021	10020	0	259591	0	0	10020	10020	0	0	20020	10011	10010
10024	10030	10021	10021	10020	0	259591	0	0	10020	10020	0	0	20020	10011	10010
10024	10030	10021	10021	10020	0	259591	0	0	10020	10020	0	0	20020	10011	10010
10024	10030	10021	10021	10020	0	259591	0	0	10020	10020	0	0	20020	10011	10010
10024	10030	10021	10021	10020	0	259591	0	0	10020	10020	0	0	20020	10011	10010
10024	10030	10021	10021	10020	0	259591	0	0	10020	10020	0	0	20020	10011	10010
10024	10030	10021	10021	10020	0	259591	0	0	10020	10020	0	0	20020	10011	10010
10024	10030	10021	10021	10020	0	259591	0	0	10020	10020	0	0	20020	10011	10010

Test 3: Latency 1->3

Code:

  lsl x0, x1, x0

Initialization

  mov x0, 1
  mov x1, 2

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 1.0030

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)	int uops in schedulers (59)	dispatch uop (78)	map int uop (7c)	map int uop inputs (7f)	? int output thing (e9)	? int retires (ef)
10204	10030	10101	10101	10108	259338	10108	10214	20224	10001	10100
10204	10030	10101	10101	10107	259539	10107	10212	20224	10001	10100
10204	10030	10101	10101	10107	259539	10107	10212	20224	10001	10100
10204	10030	10101	10101	10107	259539	10107	10212	20224	10001	10100
10204	10030	10101	10101	10107	259539	10107	10212	20224	10001	10100
10204	10030	10101	10101	10107	259539	10107	10212	20224	10001	10100
10204	10030	10101	10101	10107	259539	10107	10212	20224	10001	10100
10204	10030	10101	10101	10107	259539	10107	10212	20224	10001	10100
10204	10030	10101	10101	10107	259539	10107	10212	20224	10001	10100
10204	10030	10101	10101	10107	259539	10107	10212	20224	10001	10100

1000 unrolls and 10 iterations

Result (median cycles for code): 1.0030

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)	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	10030	10021	10021	10028	259591	10020	10020	20020	10011	10010
10024	10030	10021	10021	10020	259591	10020	10020	20020	10011	10010
10024	10030	10021	10021	10020	259591	10020	10020	20020	10011	10010
10024	10030	10021	10021	10020	259591	10020	10020	20020	10011	10010
10024	10030	10021	10021	10020	259591	10020	10020	20020	10011	10010
10024	10030	10021	10021	10020	259591	10020	10020	20020	10011	10010
10024	10030	10021	10021	10020	259591	10020	10020	20020	10011	10010
10024	10030	10021	10021	10020	259591	10020	10020	20020	10011	10010
10024	10030	10021	10021	10020	259591	10020	10020	20020	10011	10010
10024	10030	10021	10021	10020	259591	10020	10020	20020	10011	10010

Test 4: throughput

Count: 8

Code:

  lsl x0, x8, x9
  lsl x1, x8, x9
  lsl x2, x8, x9
  lsl x3, x8, x9
  lsl x4, x8, x9
  lsl x5, x8, x9
  lsl x6, x8, x9
  lsl x7, x8, x9

Initialization

  mov x8, 9
  mov x9, 10

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.3342

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)
80204	26955	80115	80115	80120	240360	80120	80222	160242	80014	80100
80204	26754	80115	80115	80120	240360	80120	80224	160248	80015	80100
80204	26758	80115	80115	80120	240360	80120	80224	160248	80015	80100
80204	26737	80115	80115	80120	240360	80120	80224	160348	80058	80100
80204	26737	80115	80115	80120	240360	80120	80224	160248	80015	80100
80204	26737	80115	80115	80120	240360	80120	80224	160248	80015	80100
80204	26737	80115	80115	80120	240360	80120	80224	160248	80015	80100
80204	26737	80115	80115	80120	240360	80120	80224	160248	80015	80100
80204	26737	80115	80115	80120	240360	80120	80224	160248	80015	80100
80204	26737	80115	80115	80120	240360	80120	80224	160248	80015	80100

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.3339

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)
80024	28053	80037	80037	80042	261477	80042	80046	160020	80011	80010
80024	26773	80021	80021	80020	282738	80020	80020	160020	80011	80010
80024	26721	80021	80021	80020	282738	80020	80020	160020	80011	80010
80024	26717	80021	80021	80020	282738	80020	80020	160020	80011	80010
80024	26717	80021	80021	80020	282738	80020	80020	160020	80011	80010
80024	26717	80021	80021	80020	282738	80020	80020	160020	80011	80010
80024	26717	80021	80021	80020	282738	80020	80020	160020	80011	80010
80024	26717	80021	80021	80020	282738	80020	80020	160020	80011	80010
80024	26717	80021	80021	80020	282738	80020	80020	160020	80011	80010
80024	26717	80021	80021	80020	282738	80020	80020	160020	80011	80010

LSL (register, 64-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: Latency 1->3

100 unrolls and 100 iterations

1000 unrolls and 10 iterations

Test 4: throughput

100 unrolls and 100 iterations

1000 unrolls and 10 iterations