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)

Test 1: uops

Code:

  mvni v0.2s, #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)031e3f51schedule 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
10042882040251000100010007000126928828812331461000100028828811100110000073116112851000289289289289289
10042882040251000100010007000126928828812331461000100028828811100110000073116112851000289289289289289
10042882040251000100010007000126928828812331461000100028828811100110000073116112851000289289289289289
10042882040251000100010007000126928828812331461000100028828811100110000073116112851000289289289289289
10042882040251000100010007000126928828812331461000100028828811100110000073116112851000289289289289289
10042882040251000100010007000126928828812331461000100028828811100110000073116112851000289289289289289
10042882061251000100010007000126928828812331461000100028828811100110000073116112851000289289289289289
10042882040251000100010007000126928828812331461000100028828811100110000073116112851000289289289289289
10042883040251000100010007000126928828812331461000100028828811100110000073116112851000289289289289289
10042882040251000100010007000026928828812331461000100028828811100110000073116112851000289289289289289

Test 2: throughput

Count: 8

Code:

  mvni v0.2s, #3
  mvni v1.2s, #3
  mvni v2.2s, #3
  mvni v3.2s, #3
  mvni v4.2s, #3
  mvni v5.2s, #3
  mvni v6.2s, #3
  mvni v7.2s, #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)03181e1f3a3f51schedule 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)60696b6d6emap stall dispatch (70)simd prf full (72)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)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
80204200581610001422580100100800001008000050056000012001902003820038997303999680100200800002002003820038118020110099100100800001000000051125164420035800001002003920039200392003920039
80204200381550001422580100100800001008000050056000012001902003820038997303999680100200800002002003820038118020110099100100800001000000051124164320035800001002003920039200392003920039
80204200381551001422580100100800001008000050056000012001902003820038997303999680100200800002002003820038118020110099100100800001000000051124164420035800001002003920039200392003920039
80204200381550001422580100100800001008000050056000012001902003820038997303999680100200800002002003820038118020110099100100800001000000051283164420035800001002003920039200392003920039
802042003815500017072580100100800001008000050056000012001902003820038997303999680100200800002002003820038118020110099100100800001000000051124164420035800001002003920039200392003920039
802042003815600014225801001008000010080000500560000120019020038200389973039996801002008000020020038200381180201100991001008000010000046651124164320035800001002003920039200392003920039
80204200381550001422580100100800001008000050056000012001902003820038997303999680100200800002002003820038118020110099100100800001000001051124164420035800001002003920039200392003920039
80204200381550001422580100100800001008000050056000012001902003820038997303999680100200800002002003820038118020110099100100800001000000051124164420035800001002003920039200392003920039
802042003815600014225801001008000010080000500560000120019020038200389973039996801002008000020020038200381180201100991001008000010000037351124164320035800001002003920039200392003920039
8020420038155008813462580100100800001008000050056000012001902003820038997303999680100200800002002003820038118020110099100100800001000000051124164320035800001002003920039200392003920039

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)1e3f51schedule 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)accfd0d2d5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
80024200471550181042580010108000010800005056000002001920038200389996310018800102080000202003820038118002110910108000010005020501716652003580000102003920039200392003920039
8002420038155004752580010108000010800005056000002001920038200389996310018800102080000202003820038118002110910108000010005020007161352003580000102003920039200392003920039
8002420038155027392580010108000010800005056000002001920038200389996310018800102080000202003820038118002110910108000010005020007161392003580000102003920039200392003920039
8002420038155024650258001010800001080000505600001200592003820038999631001880010208000020200382003811800211091010800001000502000916952003580000102003920039200392003920039
8002420038155039392580010108000010800005056000002001920038200389996310018800102080000202003820038118002110910108000010005020001016942003580000102003920039200392003920039
800242003815502739258001010800001080000505600000200192003820038999631001880010208000020200382003811800211091010800001000502000916472003580000102003920039200392003920039
800242003815502073925800101080000108000050560000020019200382003899963100188001020800002020038200381180021109101080000100050200013165132003580000102003920039200392003920039
800242003815501539258001010800001080000505600000200192003820038999631001880010208000020200382003811800211091010800001000502000516992003580000102003920039200392003920039
800242003815501239258001010800001080000505600000200192003820038999631001880010208000020200382003811800211091010800001000502000916782003580000102003920039200392003920039
800242003815503339258001010800001080000505600000200192003820038999631001880010208000020200382003811800211091010800001000502000816942003580000102003920039200392003920039