Icestorm: MOV (bitmask immediate, 32-bit) measurements

Code:

  mov w0, #0xaaaaaaaa
  nop ; nop ; nop

(no loop instructions)

1000 unrolls and 1 iteration

Retires (minus 3 nops): 1.000

Issues: 0.000

Integer unit issues: 0.001

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)	map int uop (7c)	? int output thing (e9)	? int retires (ef)
4004	2036	1	1	1000	1	1000
4004	1058	1	1	1000	1	1000
4004	1025	1	1	1000	1	1000
4004	1025	1	1	1000	1	1000
4004	1025	1	1	1000	1	1000
4004	1078	1	1	1000	1	1000
4004	1025	1	1	1000	1	1000
4004	1025	1	1	1000	1	1000
4004	1025	1	1	1000	1	1000
4004	1025	1	1	1000	1	1000

Count: 8

Code:

  mov w0, #0xaaaaaaaa
  mov w1, #0xaaaaaaaa
  mov w2, #0xaaaaaaaa
  mov w3, #0xaaaaaaaa
  mov w4, #0xaaaaaaaa
  mov w5, #0xaaaaaaaa
  mov w6, #0xaaaaaaaa
  mov w7, #0xaaaaaaaa

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.2511

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	20335	40012	40012	40015	120039	40013	80227	200	39910	80100
80204	20094	40010	40010	40013	120036	40012	80224	200	39939	80100
80204	20105	40010	40010	40013	120036	40012	80224	200	39909	80100
80204	20086	40009	40009	40012	120036	40012	80224	200	39909	80100
80204	20086	40009	40009	40012	120036	40012	80224	200	39909	80100
80204	20086	40009	40009	40012	120036	40012	80224	200	39909	80100
80204	20086	40009	40009	40012	120036	40012	80224	200	39909	80100
80204	20086	40009	40009	40012	120036	40012	80224	200	39909	80100
80204	20086	40009	40009	40012	120036	40012	80224	200	39909	80100
80204	20086	40009	40009	40012	120036	40012	80224	200	39909	80100

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.2510

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	21956	40022	40022	40025	120045	40010	80020	20	40001	80010
80024	20196	40011	40011	40010	120048	40010	80020	20	40001	80010
80024	20098	40011	40011	40010	120049	40010	80020	20	40001	80010
80024	20054	40011	40011	40010	120049	40010	80020	20	40001	80010
80024	20054	40011	40011	40010	120049	40010	80020	20	40001	80010
80024	20054	40011	40011	40010	120049	40010	80020	20	40001	80010
80024	20054	40011	40011	40010	120049	40010	80020	20	40001	80010
80024	20054	40011	40011	40010	120049	40010	80020	20	40001	80010
80024	20054	40011	40011	40010	120049	40010	80020	20	40001	80010
80024	20054	40011	40011	40010	120049	40010	80020	20	40001	80010

MOV (bitmask immediate, 32-bit)

Test 1: uops

1000 unrolls and 1 iteration

Test 2: throughput

100 unrolls and 100 iterations

1000 unrolls and 10 iterations