Skip to content

[X86][CodeGen] Add Scheduling Model for LNL-P #139446

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 5 commits into from
Jun 24, 2025
Merged

[X86][CodeGen] Add Scheduling Model for LNL-P #139446

Show file tree
Hide file tree
Changes from 2 commits
Commits
Show all changes
5 commits
Select commit Hold shift + click to select a range
f96a694
add sched for lnlp
May 11, 2025
d47f879
update pfm for lnl
May 14, 2025
4f37e85
fix type
Jun 16, 2025
ac6302f
Merge branch 'main' into lnlsched
mahesh-attarde Jun 23, 2025
a92bdb6
Merge branch 'main' into lnlsched
RKSimon Jun 24, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 4 additions & 1 deletion llvm/lib/Target/X86/X86.td
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -811,6 +811,7 @@ include "X86SchedSkylakeClient.td"
include "X86SchedSkylakeServer.td"
include "X86SchedIceLake.td"
include "X86SchedAlderlakeP.td"
include "X86SchedLunarlakeP.td"
include "X86SchedSapphireRapids.td"

//===----------------------------------------------------------------------===//
Expand Down Expand Up @@ -1862,10 +1863,12 @@ def : ProcModel<"meteorlake", AlderlakePModel,
ProcessorFeatures.ADLFeatures, ProcessorFeatures.ADLTuning>;
def : ProcModel<"arrowlake", AlderlakePModel,
ProcessorFeatures.SRFFeatures, ProcessorFeatures.ADLTuning>;
foreach P = ["arrowlake-s", "arrowlake_s", "lunarlake"] in {
foreach P = ["arrowlake-s", "arrowlake_s"] in {
def : ProcModel<P, AlderlakePModel,
ProcessorFeatures.ARLSFeatures, ProcessorFeatures.ADLTuning>;
}
def : ProcModel<"lunarlake", LunarlakePModel, ProcessorFeatures.ARLSFeatures,
ProcessorFeatures.ADLTuning>;
def : ProcModel<"pantherlake", AlderlakePModel,
ProcessorFeatures.PTLFeatures, ProcessorFeatures.ADLTuning>;
def : ProcModel<"clearwaterforest", AlderlakePModel,
Expand Down
20 changes: 20 additions & 0 deletions llvm/lib/Target/X86/X86PfmCounters.td
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -236,6 +236,26 @@ def SapphireRapidsPfmCounters : ProcPfmCounters {
}
def : PfmCountersBinding<"sapphirerapids", SapphireRapidsPfmCounters>;

def LunarLakePfmCounters : ProcPfmCounters {
let CycleCounter = UnhaltedCoreCyclesPfmCounter;
let UopsCounter = UopsIssuedPfmCounter;
let IssueCounters = [
// Refer: https://perfmon-events.intel.com/ section Lunar Lake Hybrid Event
// ALU Dispatch - Any of ALUs with latency 1 cycle that is not jmp or Shift.
PfmIssueCounter<"LNLPVPort02_03", "uops_dispatched:alu">,
PfmIssueCounter<"LNLPPort00_01_02_03_04_05", "uops_dispatched:int_eu_all">,
PfmIssueCounter<"LNLPPort00_02_04", "uops_dispatched:jmp">,
PfmIssueCounter<"LNLPPort20_21_22", "uops_dispatched:load">,
PfmIssueCounter<"LNLPPort01_03_05", "uops_dispatched:shift">,
// Slow Dispatch - If uops latency > 1, counted as slow. TBD
Copy link
Contributor Author

@mahesh-attarde mahesh-attarde May 15, 2025 •
edited
Loading

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

ops_dispatched:shift and ops_dispatched:slow uses same resource group LNLPPort01_03_05. We dont allow duplicates in ProcPfmCounter. we dont have resource group with fine granularity around latency yet. hence this is commented and marked TBD since no immediate use case around this.

// PfmIssueCounter<"LNLPPort01_03_05", "uops_dispatched:slow">,
PfmIssueCounter<"LNLPPort25_26_27", "uops_dispatched:sta">,
PfmIssueCounter<"LNLPPort10_11", "uops_dispatched:std">
];
let ValidationCounters = DefaultIntelPfmValidationCounters;
}
def : PfmCountersBinding<"Lunarlake", LunarLakePfmCounters>;

// AMD X86 Counters.
defvar DefaultAMDPfmValidationCounters = [
PfmValidationCounter<InstructionRetired, "RETIRED_INSTRUCTIONS">,
Expand Down
2,409 changes: 2,409 additions & 0 deletions llvm/lib/Target/X86/X86SchedLunarlakeP.td
View file
Open in desktop

Large diffs are not rendered by default.

149 changes: 149 additions & 0 deletions llvm/test/tools/llvm-mca/X86/LunarlakeP/independent-load-stores.s
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,149 @@
# NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py
# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=lunarlake -timeline -timeline-max-iterations=1 < %s | FileCheck %s -check-prefixes=ALL,NOALIAS
# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=lunarlake -timeline -timeline-max-iterations=1 -noalias=false < %s | FileCheck %s -check-prefixes=ALL,YESALIAS

addq $44, 64(%r14)
addq $44, 128(%r14)
addq $44, 192(%r14)
addq $44, 256(%r14)
addq $44, 320(%r14)
addq $44, 384(%r14)
addq $44, 448(%r14)
addq $44, 512(%r14)
addq $44, 576(%r14)
addq $44, 640(%r14)

# ALL: Iterations: 100
# ALL-NEXT: Instructions: 1000

# NOALIAS-NEXT: Total Cycles: 681
# YESALIAS-NEXT: Total Cycles: 12003

# ALL-NEXT: Total uOps: 4000

# ALL: Dispatch Width: 8

# NOALIAS-NEXT: uOps Per Cycle: 5.87
# NOALIAS-NEXT: IPC: 1.47

# YESALIAS-NEXT: uOps Per Cycle: 0.33
# YESALIAS-NEXT: IPC: 0.08

# ALL-NEXT: Block RThroughput: 6.7

# ALL: Instruction Info:
# ALL-NEXT: [1]: #uOps
# ALL-NEXT: [2]: Latency
# ALL-NEXT: [3]: RThroughput
# ALL-NEXT: [4]: MayLoad
# ALL-NEXT: [5]: MayStore
# ALL-NEXT: [6]: HasSideEffects (U)

# ALL: [1] [2] [3] [4] [5] [6] Instructions:
# ALL-NEXT: 4 12 0.67 * * addq $44, 64(%r14)
# ALL-NEXT: 4 12 0.67 * * addq $44, 128(%r14)
# ALL-NEXT: 4 12 0.67 * * addq $44, 192(%r14)
# ALL-NEXT: 4 12 0.67 * * addq $44, 256(%r14)
# ALL-NEXT: 4 12 0.67 * * addq $44, 320(%r14)
# ALL-NEXT: 4 12 0.67 * * addq $44, 384(%r14)
# ALL-NEXT: 4 12 0.67 * * addq $44, 448(%r14)
# ALL-NEXT: 4 12 0.67 * * addq $44, 512(%r14)
# ALL-NEXT: 4 12 0.67 * * addq $44, 576(%r14)
# ALL-NEXT: 4 12 0.67 * * addq $44, 640(%r14)

# ALL: Resources:
# ALL-NEXT: [0] - ADLPPort00
# ALL-NEXT: [1] - LNLPPort00
# ALL-NEXT: [2] - LNLPPort01
# ALL-NEXT: [3] - LNLPPort02
# ALL-NEXT: [4] - LNLPPort03
# ALL-NEXT: [5] - LNLPPort04
# ALL-NEXT: [6] - LNLPPort05
# ALL-NEXT: [7] - LNLPPort10
# ALL-NEXT: [8] - LNLPPort11
# ALL-NEXT: [9] - LNLPPort20
# ALL-NEXT: [10] - LNLPPort21
# ALL-NEXT: [11] - LNLPPort22
# ALL-NEXT: [12] - LNLPPort25
# ALL-NEXT: [13] - LNLPPort26
# ALL-NEXT: [14] - LNLPPort27
# ALL-NEXT: [15] - LNLPPortInvalid
# ALL-NEXT: [16] - LNLPVPort00
# ALL-NEXT: [17] - LNLPVPort01
# ALL-NEXT: [18] - LNLPVPort02
# ALL-NEXT: [19] - LNLPVPort03

# ALL: Resource pressure per iteration:
# ALL-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19]
# ALL-NEXT: - - 3.33 - 3.33 - 3.34 5.00 5.00 6.66 6.66 6.68 3.33 3.33 3.34 - - - - -

# ALL: Resource pressure by instruction:
# ALL-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] Instructions:
# ALL-NEXT: - - 0.33 - 0.33 - 0.34 - 1.00 0.66 0.66 0.68 0.33 0.33 0.34 - - - - - addq $44, 64(%r14)
# ALL-NEXT: - - 0.33 - 0.34 - 0.33 1.00 - 0.66 0.68 0.66 0.33 0.34 0.33 - - - - - addq $44, 128(%r14)
# ALL-NEXT: - - 0.34 - 0.33 - 0.33 - 1.00 0.68 0.66 0.66 0.34 0.33 0.33 - - - - - addq $44, 192(%r14)
# ALL-NEXT: - - 0.33 - 0.33 - 0.34 1.00 - 0.66 0.66 0.68 0.33 0.33 0.34 - - - - - addq $44, 256(%r14)
# ALL-NEXT: - - 0.33 - 0.34 - 0.33 - 1.00 0.66 0.68 0.66 0.33 0.34 0.33 - - - - - addq $44, 320(%r14)
# ALL-NEXT: - - 0.34 - 0.33 - 0.33 1.00 - 0.68 0.66 0.66 0.34 0.33 0.33 - - - - - addq $44, 384(%r14)
# ALL-NEXT: - - 0.33 - 0.33 - 0.34 - 1.00 0.66 0.66 0.68 0.33 0.33 0.34 - - - - - addq $44, 448(%r14)
# ALL-NEXT: - - 0.33 - 0.34 - 0.33 1.00 - 0.66 0.68 0.66 0.33 0.34 0.33 - - - - - addq $44, 512(%r14)
# ALL-NEXT: - - 0.34 - 0.33 - 0.33 - 1.00 0.68 0.66 0.66 0.34 0.33 0.33 - - - - - addq $44, 576(%r14)
# ALL-NEXT: - - 0.33 - 0.33 - 0.34 1.00 - 0.66 0.66 0.68 0.33 0.33 0.34 - - - - - addq $44, 640(%r14)

# ALL: Timeline view:

# NOALIAS-NEXT: 0123456789
# NOALIAS-NEXT: Index 0123456789 0

# YESALIAS-NEXT: 0123456789 0123456789 0123456789 01234
# YESALIAS-NEXT: Index 0123456789 0123456789 0123456789 0123456789

# NOALIAS: [0,0] DeeeeeeeeeeeeER. . addq $44, 64(%r14)
# NOALIAS-NEXT: [0,1] DeeeeeeeeeeeeER. . addq $44, 128(%r14)
# NOALIAS-NEXT: [0,2] .DeeeeeeeeeeeeER . addq $44, 192(%r14)
# NOALIAS-NEXT: [0,3] .D=eeeeeeeeeeeeER . addq $44, 256(%r14)
# NOALIAS-NEXT: [0,4] . DeeeeeeeeeeeeER . addq $44, 320(%r14)
# NOALIAS-NEXT: [0,5] . D=eeeeeeeeeeeeER . addq $44, 384(%r14)
# NOALIAS-NEXT: [0,6] . D=eeeeeeeeeeeeER . addq $44, 448(%r14)
# NOALIAS-NEXT: [0,7] . D=eeeeeeeeeeeeER . addq $44, 512(%r14)
# NOALIAS-NEXT: [0,8] . D=eeeeeeeeeeeeER. addq $44, 576(%r14)
# NOALIAS-NEXT: [0,9] . D==eeeeeeeeeeeeER addq $44, 640(%r14)

# YESALIAS: [0,0] DeeeeeeeeeeeeER. . . . . . . . . . . . . addq $44, 64(%r14)
# YESALIAS-NEXT: [0,1] D============eeeeeeeeeeeeER . . . . . . . . . . addq $44, 128(%r14)
# YESALIAS-NEXT: [0,2] .D=======================eeeeeeeeeeeeER . . . . . . . . addq $44, 192(%r14)
# YESALIAS-NEXT: [0,3] .D===================================eeeeeeeeeeeeER . . . . . addq $44, 256(%r14)
# YESALIAS-NEXT: [0,4] . D==============================================eeeeeeeeeeeeER . . . addq $44, 320(%r14)
# YESALIAS-NEXT: [0,5] . D==========================================================eeeeeeeeeeeeER addq $44, 384(%r14)
# YESALIAS-NEXT: Truncated display due to cycle limit

# ALL: Average Wait times (based on the timeline view):
# ALL-NEXT: [0]: Executions
# ALL-NEXT: [1]: Average time spent waiting in a scheduler's queue
# ALL-NEXT: [2]: Average time spent waiting in a scheduler's queue while ready
# ALL-NEXT: [3]: Average time elapsed from WB until retire stage

# ALL: [0] [1] [2] [3]
# ALL-NEXT: 0. 1 1.0 1.0 0.0 addq $44, 64(%r14)

# NOALIAS-NEXT: 1. 1 1.0 0.0 0.0 addq $44, 128(%r14)
# NOALIAS-NEXT: 2. 1 1.0 1.0 0.0 addq $44, 192(%r14)
# NOALIAS-NEXT: 3. 1 2.0 1.0 0.0 addq $44, 256(%r14)
# NOALIAS-NEXT: 4. 1 1.0 0.0 0.0 addq $44, 320(%r14)
# NOALIAS-NEXT: 5. 1 2.0 1.0 0.0 addq $44, 384(%r14)
# NOALIAS-NEXT: 6. 1 2.0 1.0 0.0 addq $44, 448(%r14)
# NOALIAS-NEXT: 7. 1 2.0 0.0 0.0 addq $44, 512(%r14)
# NOALIAS-NEXT: 8. 1 2.0 1.0 0.0 addq $44, 576(%r14)
# NOALIAS-NEXT: 9. 1 3.0 1.0 0.0 addq $44, 640(%r14)
# NOALIAS-NEXT: 1 1.7 0.7 0.0 <total>

# YESALIAS-NEXT: 1. 1 13.0 0.0 0.0 addq $44, 128(%r14)
# YESALIAS-NEXT: 2. 1 24.0 0.0 0.0 addq $44, 192(%r14)
# YESALIAS-NEXT: 3. 1 36.0 0.0 0.0 addq $44, 256(%r14)
# YESALIAS-NEXT: 4. 1 47.0 0.0 0.0 addq $44, 320(%r14)
# YESALIAS-NEXT: 5. 1 59.0 0.0 0.0 addq $44, 384(%r14)
# YESALIAS-NEXT: 6. 1 70.0 0.0 0.0 addq $44, 448(%r14)
# YESALIAS-NEXT: 7. 1 82.0 0.0 0.0 addq $44, 512(%r14)
# YESALIAS-NEXT: 8. 1 93.0 0.0 0.0 addq $44, 576(%r14)
# YESALIAS-NEXT: 9. 1 105.0 0.0 0.0 addq $44, 640(%r14)
# YESALIAS-NEXT: 1 53.0 0.1 0.0 <total>
21 changes: 21 additions & 0 deletions llvm/test/tools/llvm-mca/X86/LunarlakeP/partially-overlapping-groups.s
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,21 @@
# NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py
# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=lunarlake -all-views=false -summary-view < %s | FileCheck %s

# Issue #57548

# Do not crash when simulating instructions that consume partially overlapping
# resource groups.

vpsllw %xmm1, %ymm0, %ymm0
vpsllw %xmm1, %xmm2, %xmm1
vpand %ymm1, %ymm0, %ymm0

# CHECK: Iterations: 100
# CHECK-NEXT: Instructions: 300
# CHECK-NEXT: Total Cycles: 503
# CHECK-NEXT: Total uOps: 500

# CHECK: Dispatch Width: 8
# CHECK-NEXT: uOps Per Cycle: 0.99
# CHECK-NEXT: IPC: 0.60
# CHECK-NEXT: Block RThroughput: 1.0
69 changes: 69 additions & 0 deletions llvm/test/tools/llvm-mca/X86/LunarlakeP/resources-aes.s
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,69 @@
# NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py
# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=lunarlake -instruction-tables < %s | FileCheck %s

aesdec %xmm0, %xmm2
aesdec (%rax), %xmm2

aesdeclast %xmm0, %xmm2
aesdeclast (%rax), %xmm2

aesenc %xmm0, %xmm2
aesenc (%rax), %xmm2

aesenclast %xmm0, %xmm2
aesenclast (%rax), %xmm2

# CHECK: Instruction Info:
# CHECK-NEXT: [1]: #uOps
# CHECK-NEXT: [2]: Latency
# CHECK-NEXT: [3]: RThroughput
# CHECK-NEXT: [4]: MayLoad
# CHECK-NEXT: [5]: MayStore
# CHECK-NEXT: [6]: HasSideEffects (U)

# CHECK: [1] [2] [3] [4] [5] [6] Instructions:
# CHECK-NEXT: 1 3 2.00 aesdec %xmm0, %xmm2
# CHECK-NEXT: 2 11 2.33 * aesdec (%rax), %xmm2
# CHECK-NEXT: 1 3 2.00 aesdeclast %xmm0, %xmm2
# CHECK-NEXT: 2 11 2.33 * aesdeclast (%rax), %xmm2
# CHECK-NEXT: 1 3 2.00 aesenc %xmm0, %xmm2
# CHECK-NEXT: 2 11 2.33 * aesenc (%rax), %xmm2
# CHECK-NEXT: 1 3 2.00 aesenclast %xmm0, %xmm2
# CHECK-NEXT: 2 11 2.33 * aesenclast (%rax), %xmm2

# CHECK: Resources:
# CHECK-NEXT: [0] - ADLPPort00
# CHECK-NEXT: [1] - LNLPPort00
# CHECK-NEXT: [2] - LNLPPort01
# CHECK-NEXT: [3] - LNLPPort02
# CHECK-NEXT: [4] - LNLPPort03
# CHECK-NEXT: [5] - LNLPPort04
# CHECK-NEXT: [6] - LNLPPort05
# CHECK-NEXT: [7] - LNLPPort10
# CHECK-NEXT: [8] - LNLPPort11
# CHECK-NEXT: [9] - LNLPPort20
# CHECK-NEXT: [10] - LNLPPort21
# CHECK-NEXT: [11] - LNLPPort22
# CHECK-NEXT: [12] - LNLPPort25
# CHECK-NEXT: [13] - LNLPPort26
# CHECK-NEXT: [14] - LNLPPort27
# CHECK-NEXT: [15] - LNLPPortInvalid
# CHECK-NEXT: [16] - LNLPVPort00
# CHECK-NEXT: [17] - LNLPVPort01
# CHECK-NEXT: [18] - LNLPVPort02
# CHECK-NEXT: [19] - LNLPVPort03

# CHECK: Resource pressure per iteration:
# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19]
# CHECK-NEXT: - - - - - - - - - 9.33 9.33 9.33 - - - - 16.00 16.00 - -

# CHECK: Resource pressure by instruction:
# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] Instructions:
# CHECK-NEXT: - - - - - - - - - - - - - - - - 2.00 2.00 - - aesdec %xmm0, %xmm2
# CHECK-NEXT: - - - - - - - - - 2.33 2.33 2.33 - - - - 2.00 2.00 - - aesdec (%rax), %xmm2
# CHECK-NEXT: - - - - - - - - - - - - - - - - 2.00 2.00 - - aesdeclast %xmm0, %xmm2
# CHECK-NEXT: - - - - - - - - - 2.33 2.33 2.33 - - - - 2.00 2.00 - - aesdeclast (%rax), %xmm2
# CHECK-NEXT: - - - - - - - - - - - - - - - - 2.00 2.00 - - aesenc %xmm0, %xmm2
# CHECK-NEXT: - - - - - - - - - 2.33 2.33 2.33 - - - - 2.00 2.00 - - aesenc (%rax), %xmm2
# CHECK-NEXT: - - - - - - - - - - - - - - - - 2.00 2.00 - - aesenclast %xmm0, %xmm2
# CHECK-NEXT: - - - - - - - - - 2.33 2.33 2.33 - - - - 2.00 2.00 - - aesenclast (%rax), %xmm2
Loading