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, 2S, lsl)

Test 1: uops

Code:

  mvni v0.2s, #3, lsl #8

(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)03mmu table walk data (08)1e3f51schedule 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 tlb miss (a1)ld unit uop (a6)l1d cache writeback (a8)accfd0d2d5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
1004288200402510001000100070001269288288123314610001000288288111001100000007300116112851000289289289289289
1004288200402510001000100070001269288288123314610001000288288111001100000007300116112851000289289289289289
1004288200402510001000100070001269288288123314610001000288288111001100000007300116112851000289289289289289
1004288200402510001000100070001269288288123314610001000288288111001100000007300116112851000289289289289289
1004288200402510001000100070001269288288123314610001000288288111001100000007300116112851000289289289289289
1004288200402510001000100070001269288288123314610001000288288111001100000007300116112851000289289289289289
1004288200402510001000100070001269288288123314610001000288288111001100000007300116112851000289289289289289
1004288300402510001000100070001269288288123314610001000288288111001100000007300116112851000289289289289289
1004288200402510001000100070001269288288123314610001000288288111001100000007300116112851000289289289289289
1004288200402510001000100070001269288288123314610001000288288111001100000007300116112851000289289289289289

Test 2: throughput

Count: 8

Code:

  mvni v0.2s, #3, lsl #8
  mvni v1.2s, #3, lsl #8
  mvni v2.2s, #3, lsl #8
  mvni v3.2s, #3, lsl #8
  mvni v4.2s, #3, lsl #8
  mvni v5.2s, #3, lsl #8
  mvni v6.2s, #3, lsl #8
  mvni v7.2s, #3, lsl #8

(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)191e3f51schedule 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 cache writeback (a8)a9accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
8020420058155000452925801081008000810080020500560128120019200382003810003699898012020080032200200382003811802011009910010080000100300511021622200350800001002003920039200392003920039
802042003815500002302580100100800001008000050056000002001920038200389973399968010020080000200200382003811802011009910010080000100000511021622200350800001002003920039200392003920039
80204200381550000402580100100800001008000050056000002001920038200389973399968010020080000200200382003811802011009910010080000100000511021622200350800001002003920039200392003920039
80204200381560000402580100100800001008000050056000002001920038200389973399968010020080000200200382003811802011009910010080000100000511021622200350800001002003920039200392003920039
80204200381560000402580100100800001008000050056000002001920038200389984399968010020080000200200382003811802011009910010080000100009511021622200350800001002003920039200392003920039
80204200381550001654025801001008000010080000500560000020019200382003810008399968010020080000200200382003811802011009910010080000100000511021622200350800001002003920039200392003920039
802042003815601024402580100100800001008000050056000002001920038200389987399968010020080000200200382003811802011009910010080000100003511021622200350800001002003920039200392003920039
80204200381560000402580100100800001008000050056066802001920038200389973399968010020080000200200382003811802011009910010080000100000511021622200350800001002003920039200392003920039
802042003815600021402580100100800001008000050056000002005720038200389973399968010020080000200200382003811802011009910010080000100000511021622200350800001002003920039200392003920039
80204200381550000402580100100800001008000050056000012001920038200389973399968010020080000200200382003811802011009910010080000100000511021622200350800001002003920039200392003920039

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)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)9fld 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
800242004715600012908125800101080000108000050560000120019200382003899963100188001020800002020038200381180021109101080000100000050209165720035080000102003920039200392003920039
80024200381550001206125800101080000108000050560000120019200382003899963100188001020800002020038200381180021109101080000100000050207167520035080000102003920039200392003920039
8002420038155000003925800101080000108000050560000120019200382003899963100188001020800002020038200381180021109101080000100000050206164620035080000102003920039200392003920039
8002420038155000003925800101080000108000050560000120019200382003899963100188001020800002020038200381180021109101080000100000050206165620035080000102003920039200392003920039
80024200381550001203925800101080000108000050560000120019200382003899963100448001020800002020038200381180021109101080000100000050206166420035080000102003920039200392003920039
8002420038155000003925800101080000108000050560000120019200382003899963100188001020800002020038200381180021109101080000100000050207166620035080000102003920039200392003920039
8002420038155000003925800101080000108000050560000120019200382003899963100188001020800002020038200381180021109101080000100000050205166520035080000102003920039200392003920039
80024200381550001803925800101080000108000050560000120019200382003899963100188001020800002020038200381180021109101080000100000050206167520035080000102003920039200392003920039
80024200381550002103925800101080000108000050560000120019200382003899963100188001020800002020038200381180021109101080000100000050206164720035080000102003920039200392003920039
800242003815500033039258001010800001080000505600001200192003820038999619100188001020800002020038200381180021109101080000100000050204166620035080000102003920039200392003920039