Apple Microarchitecture Research by Dougall Johnson

M1/A14 P-core (Firestorm): Overview | Base Instructions | SIMD and FP Instructions
M1/A14 E-core (Icestorm):  Overview | Base Instructions | SIMD and FP Instructions

MVNI (vector, 4H)

Test 1: uops

Code:

  mvni v0.4h, #3

(no loop instructions)

1000 unrolls and 1 iteration

Retires: 1.000

Issues: 1.000

Integer unit issues: 0.000

Load/store unit issues: 0.000

SIMD/FP unit issues: 1.000

retire uop (01)cycle (02)03l2 tlb miss data (0b)3f51schedule uop (52)schedule simd uop (54)dispatch simd uop (57)ldst uops in schedulers (5b)60696d6emap stall dispatch (70)map rewind (75)map stall (76)dispatch uop (78)map simd uop (7e)8283flush restart other nonspec (84)85inst all (8c)inst simd alu (9a)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
10042882040251000100010007000126928828812331461000100028828811100110000073216112851000289289289289289
10042882040251000100010007000126928828812331461000100028828811100110000073116112851000289289289289289
10042882040251000100010007000126928828812331461000100028828811100110000073116112851000289289289289289
100428820387251000100011007000026928833712331461000100028828811100110000073116112851000289289289289289
10043272140251000100010007000126928828812331461000100028828811100110001073116112851000289289289289339
10042883040251000100010007000126928828812331461000100028828811100110000073116112851000289289289289289
10042882040251000100010007000126928828812331461000100028828811100110000073116112851000289289289289289
10042882040251000100010007000126928828812331461000100028828811100110000073116112851000289289289289289
100428820100251000100010007000126928828812331461000100028828811100110001073116112851000289289289289289
10042882040251000100010007000026928828812331461000100028828811100110000073116112851000289289289289289

Test 2: throughput

Count: 8

Code:

  mvni v0.4h, #3
  mvni v1.4h, #3
  mvni v2.4h, #3
  mvni v3.4h, #3
  mvni v4.4h, #3
  mvni v5.4h, #3
  mvni v6.4h, #3
  mvni v7.4h, #3

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.2505

retire uop (01)cycle (02)03mmu table walk data (08)l2 tlb miss data (0b)18191e1f3f51schedule uop (52)schedule int uop (53)schedule simd uop (54)dispatch int uop (56)dispatch simd uop (57)int uops in schedulers (59)ldst uops in schedulers (5b)60696d6emap stall dispatch (70)map rewind (75)map stall (76)dispatch uop (78)map int uop (7c)map simd uop (7e)map int uop inputs (7f)8283flush restart other nonspec (84)85inst all (8c)inst branch (8d)inst branch taken (90)inst branch cond (94)inst int alu (97)inst simd alu (9a)9fl1d tlb access (a0)l1d tlb miss (a1)ld unit uop (a6)l1d cache writeback (a8)a9acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
80204200591550000008225801001008000010080000500560000020019200382003899733999680100200800002002003820038118020110099100100800001000003000511021622200350800001002003920039200392003920039
80204200381550000006125801001008000010080000500560000020019200382003899733999680100200800002002003820038118020110099100100800001000000000511021622200350800001002003920039202452003920039
80204200381550000004025801001008000010080000500560000020019200382003899733999680100200800002002003820038118020110099100100800001000000000511021722200350800001002003920039200392003920039
80204200381560000004025801001008000010080000500560000020019200382003899733999680100200800002002003820038118020110099100100800001000000000511021622200350800001002003920039200392003920039
802042003815500000011025801001008000010080000500560000020019200382003899733999680100200800002002003820038118020110099100100800001000000000511021622200350800001002003920039200392003920039
80204200381560000004025801001008000010080000500560000020019200382003899733999680100200800002002003820038118020110099100100800001000001000511021622200350800001002003920039200392003920039
80204200381560000004025801001008000010080000500560000020019200382024299733999680100200800002002003820038118020110099100100800001000000011630511021622200350800001002003920039202472003920039
80204200911550000005425801001008000010080000578560000020019200382003899733999680100200800002002003820038118020110099100100800001000000000511021622200350800001002003920039200392003920039
80204200381560000004025801001008000010080000606560000020019200382003899733999680100200800002002003820038118020110099100100800001000000000511021622200350800001002003920039200392003920039
80204200381550000004025801001008000010080000500560000020019200382003899733999680100200800002002003820038118020110099100100800001000000000511021622200350800001002003920039200392003920039

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.2505

retire uop (01)cycle (02)03l2 tlb miss data (0b)18191e3f51schedule uop (52)schedule int uop (53)schedule simd uop (54)dispatch int uop (56)dispatch simd uop (57)int uops in schedulers (59)ldst uops in schedulers (5b)6061696d6emap stall dispatch (70)map rewind (75)map stall (76)dispatch uop (78)map int uop (7c)map simd uop (7e)map int uop inputs (7f)8283flush restart other nonspec (84)85inst all (8c)inst branch (8d)inst branch taken (90)inst branch cond (94)inst int alu (97)inst simd alu (9a)9fld unit uop (a6)l1d cache writeback (a8)accfd0d2d5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)eaebec? simd retires (ee)? int retires (ef)f5f6f7f8fd
8002420040155000039258001010800001080000505600001020019200382003899963100188001020800002020038200381180021109101080000100005020001616715200350150080000102003920039200392023920039
80024200381560000392580010108000010800005056000000200192003820038999631001880010208000020200382003811800211091010800001000050205071617620035000080000102003920039200392003920039
800242003815500003925800101080000108000050560000002001920038200389996310018800102080000202003820038118002110910108000010010502050171661620035000080000102003920039200392003920039
800242003815500003925800101080000108000050560000002001920038200389996310018800102080000202003820038118002110910108000010000502000171671720035000080000102003920039200392003920039
8002420038155000939258001010800001080000505600000520019200382003899963100188001020800002020038200381180021109101080000100005020001716171720035000080000102003920039200392003920039
8002420038155000123925800101080000108000050560000102001920038200389996310018800102080000202003820038118002110910108000010000502000171614720035000080000102003920039200392003920039
80024201391550000392580010108000010800005056000000200192003820038999631001880010208000020200382003811800211091010800001000050200071617720035000080000102003920039200392003920039
8002420038155000039258001010800001080000505600000020019200382003899963100188001020800002020038200381180021109101080000100005020501716171720035000080000102003920039200392003920039
800242003815500003925800101080000108000050560000052001920038200389996310018800102080000202003820038118002110910108000010000502050716171720035000080000102003920039200392003920039
8002420038155000039258001010800001080000505600000020019200382003899963100188001020800002020038200381180021109101080000100018502000171617720035000080000102003920039200392003920039