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

UQSHL (scalar, H)

Test 1: uops

Code:

  uqshl h0, h0, h1
  movi v0.16b, 1
  movi v1.16b, 2

(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)031e3f4e51schedule 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)map simd uop inputs (81)8283flush restart other nonspec (84)85inst all (8c)inst simd alu (9a)ld unit uop (a6)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
1004203715084168725100010001000264680020182037203715723189510001000200020372037111001100000073216221787100020382038203820382038
1004203715061168725100010001000264680020182037203715723189510001000200020372037111001100000073216221787100020382038203820382038
10042037150105168725100010001000264680020182037203715723189510001000200020372037111001100000373216221787100020382038203820382038
1004203715061168725100010001000264680020182037203715723189510001000200020372037111001100001073216221787100020382038203820382038
1004203715061168725100010001000264680020182037203715723189510001000200020372037111001100000073216221787100020382038203820382038
1004203715061168725100010001000264680120182037203715723189510001000200020372037111001100000073216221787100020382038203820382038
1004203715061168725100010001000264680120182037203715723189510001000200020372037111001100000073216221787100020382038203820382038
1004203715093168725100010001000264680120182037203715723189510001000200020372037111001100000373216221787100020382038203820382038
1004203715061168725100010001000264680120182037203715723189510001000200020372037111001100000073216221787100020382038203820382038
1004203715061168725100010001000264680020182037203715723189510001000200020372037111001100000073216221787100020382038203820382038

Test 2: Latency 1->2

Code:

  uqshl h0, h0, h1
  movi v0.16b, 1
  movi v1.16b, 2

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)03l2 tlb miss data (0b)1e1f3f4e51schedule 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)map simd uop inputs (81)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 miss (a1)st unit uop (a7)l1d cache writeback (a8)acbranch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
10204200371610006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100000000071021622197910100001002003820038200382003820038
10204200371500006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100000000071031622197910100001002003820038200382003820038
10204200371500006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100000000071021622197910100001002003820038200382003820038
10204200371500006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100000000071021622197910100001002003820038200382003820038
10204200371500006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100000000071021622197910100001002003820038200382003820038
10204200371500006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100000000071021622197910100001002003820038200382003820038
10204200371500006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100000900071021622197910100001002003820038200382003820038
10204200371500006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100000011171811611198010100001002003820038200382003820038
1020420037150000223119687251010010010000100100005002847680020018200372003718429618741101002001000820020016200372003711102011009910010010000100000011171711611198010100001002003820038200382003820038
10204200371500006119687251010010010000100100005002847680020018200372003718422318745101002001000020020000200372003711102011009910010010000100001000071021622197910100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)03mmu table walk data (08)l2 tlb miss data (0b)18191e1f3f4e51schedule 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)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)map simd uop inputs (81)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)a9acc2cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
100242003715000000018919687251001010100001010000502847680120018200372003718444031876710010201000020200002003720037111002110910101000010000000006402162219849010000102003820038200382003820038
10024200371500000006119687251001010100001010000502847680020018200372003718444031876710010201000020200002003720037111002110910101000010000000006402162119785010000102003820038200382003820038
1002420037150000063018919687251001010100001010000502847680120018200372003718444031876710010201000020200002003720037111002110910101000010000000006402162219785010000102003820038200382003820038
100242003715000000061196872510010101000010100005028476800200182003720037184440318767100102010000202000020037200371110021109101010000100001100006403162219785010000102003820038200382003820038
10024200371500000006119687251001010100001010000502847680020018200372003718444031876710010201000020200002003720037111002110910101000010000000006402162219785010000102003820038200382003820038
10024200371500000006119687251001010100001010000502847680020018200372003718444031876710010201000020200002003720037111002110910101000010000000006402162219785010000102003820038200382003820038
10024200371500000006119687251001010100001010000502847680020018200372003718444031876710010201000020200002003720037111002110910101000010000100006402162219785010000102003820038200382003820038
10024200371500000008419687251001010100001010000502847680020018200372003718444031876710010201000020200002003720037111002110910101000010000000006403162219785010000102003820038200382003820038
10024200371500000006119687251001010100001010000502847680020018200372003718444031876710010201000020200002003720037111002110910101000010000000006403162219785010000102003820038200382003820038
10024200371500000006119687251001010100001010000502847680020018200372003718444031876710010201000020200002003720037111002110910101000010000000006402162219785010000102003820038200382003820038

Test 3: Latency 1->3

Code:

  uqshl h0, h1, h0
  movi v0.16b, 1
  movi v1.16b, 2

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)03mmu table walk data (08)1e1f3f4e51schedule 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)map simd uop inputs (81)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)acbranch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
10204200371500003461968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010000007101161119791100001002003820038200382003820038
1020420037150000611968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200841110201100991001001000010000007101161119791100001002003820038200382003820038
1020420084150000611968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010000007101161119791100001002003820038200382003820038
1020420037150000611968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010000007101161119791100001002003820038200382003820038
1020420037150000611968725101001001000010010000500284768012001820037200371842231874510100200100002002000020037200371110201100991001001000010000017101161119791100001002003820038200382003820038
1020420037150000611968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010000007101161119791100001002003820038200382003820038
1020420037150000611968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010000007101161119791100001002003820038200382003820038
10204200371490001411968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010000007101161119791100001002003820038200382003820038
1020420037150000611968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010000007101161119791100001002003820038200382003820038
1020420037150000611968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010000007101161119791100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)03181e3f4e51schedule 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)map simd uop inputs (81)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)9faccdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
10024200371500061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000642216221978510000102003820038200382003820038
10024200371500061196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000642216221978510000102003820038200382003820038
10024200371500061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000642216221978510000102003820038200382003820038
10024200371500061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000642216221978510000102003820038200382003820038
100242003715001561196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001060642216221978510000102003820038200382003820038
10024200371500084196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000642216221978510000102003820038200382003820038
10024200371500061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000642216221978510000102003820038200382003820038
10024200371500061196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000642216221978510000102003820038200382003820038
100242003715000677196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100221091010100001000642216221978510000102003820038200382003820038
100242003715004261196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000642216221978510000102003820038200382003820038

Test 4: throughput

Count: 8

Code:

  uqshl h0, h8, h9
  uqshl h1, h8, h9
  uqshl h2, h8, h9
  uqshl h3, h8, h9
  uqshl h4, h8, h9
  uqshl h5, h8, h9
  uqshl h6, h8, h9
  uqshl h7, h8, h9
  movi v8.16b, 9
  movi v9.16b, 10

(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)03l2 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)696d6emap 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)map simd uop inputs (81)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)branch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
802042005615000029258010810080008100800205006401322001920038200389977699898012020080032200160064200382003811802011009910010080000100011151180160020035800001002003920039200392003920039
802042003815000050258010810080008100800205006401322001920038200389977699898012020080032200160064200382003811802011009910010080000100011151180160020035800001002003920039200392003920039
802042003815000040258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100000051101161120035800001002003920039200392003920039
802042003815000040258010010080000100800005006400002001920038200389973399968010020080000200160188200382003811802011009910010080000100000051101161120035800001002003920039200392003920039
802042003815000040258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100000051101161120035800001002003920039200392003920039
802042003815000040258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100000051101161120035800001002003920039200392003920039
8020420038150000610258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100000051101161120035800001002003920039200392003920039
802042003815000040258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100000051351161120035800001002003920039200392003920039
802042003815000040258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100000051101161120035800001002003920039200392003920039
802042003815000040258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100000051101161120035800001002003920039200392003920039

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)03mmu table walk instruction (07)mmu table walk data (08)l2 tlb miss instruction (0a)l2 tlb miss data (0b)18191e1f3a3f51schedule 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)5f60696d6emap 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)map simd uop inputs (81)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)acc2branch cond mispred nonspec (c5)cfd0d2l1i cache miss demand (d3)d5map dispatch bubble (d6)d9daddfetch restart (de)e0? int output thing (e9)eaeb? simd retires (ee)? int retires (ef)f5f6f7f8fd
800242003915010100000246258001010800001080000506400000120019200382003899963100188001020801322016000020038200381180021109101080000100000000502400017160016162003500080000102003920039200392003920039
800242003815010100000246258001010800001080000506400000120019200382003899963100188001020800002016000020038200381180021109101080000100000000502400013160014152003500080000102003920039200392003920039
800242003815010100000246258001010800001080000506400000120019200382003899963100188001020800002016058420038200381180021109101080000100000000502400019160017162003520080000102003920039200392003920039
800242003815010100000246258001010800001080000506400000120019200382003899963100188001020800002016000020038200381180021109101080000100000000502400016160016162003500080000102003920039200392003920039
800242003815010100000246258001010800001080000506400000120019200382003899963100188001020800002016000020038200381180021109101080000100000000502400017160016152003500080000102003920039200392003920039
800242003815010100000246258001010800001080000506400000120019200382003899963100188001020800002016000020038200381180021109101080000100000000502400011160016112003500080000102003920039200392003920039
800242003815010100000246258001010800001080000506400000020019200382003899963100188001020800002016000020038200381180021109101080000100000000502400013160016132003500080000102003920039200392003920039
800242003815010100000246258001010800001080000506400000120019200382003899963100188001020800002016038620038200381180021109101080000100000000502400017160017162003500080000102003920039200392003920039
800242003815010100000246258001010800001080000506400000020019200382003899963100188001020800002016000020038200381180021109101080000100000000502400017160013162003500080000102003920039200392003920039
800242003815010100060246258001010800001080000506400000120019200382003899963100188001020800002016000020038200381180021109101080000100000000502400017160017162003500080000102003920039200392003920039