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[X86][BtVer2][MCA][NFC] Add CMPEQ dependency-breaking one-idioms tests
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Summary: As per `Agner's Microarchitecture doc
(21.8 AMD Bobcat and Jaguar pipeline - Dependency-breaking instructions)`,
these, like zero-idioms, are dependency-breaking,
although they produce ones and still consume resources.

FIXME: as discussed in D48877, llvm-mca handling is broken for these.

Reviewers: andreadb

Reviewed By: andreadb

Subscribers: gbedwell, RKSimon, llvm-commits

Differential Revision: https://reviews.llvm.org/D48876

llvm-svn: 336292
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@LebedevRI
LebedevRI committed Jul 4, 2018
1 parent ae1c4dc commit 0dd2704
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154 changes: 154 additions & 0 deletions llvm/test/tools/llvm-mca/X86/BtVer2/one-idioms.s
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# NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py
# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=btver2 -timeline -register-file-stats -iterations=1 < %s | FileCheck %s

# These are dependency-breaking one-idioms.
# Much like zero-idioms, but they produce ones, and do consume resources.

pcmpeqb %mm2, %mm2
pcmpeqd %mm2, %mm2
# pcmpeqq %mm2, %mm2 # invalid operand for instruction
pcmpeqw %mm2, %mm2

pcmpeqb %xmm2, %xmm2
pcmpeqd %xmm2, %xmm2
pcmpeqq %xmm2, %xmm2
pcmpeqw %xmm2, %xmm2

vpcmpeqb %xmm3, %xmm3, %xmm3
vpcmpeqd %xmm3, %xmm3, %xmm3
vpcmpeqq %xmm3, %xmm3, %xmm3
vpcmpeqw %xmm3, %xmm3, %xmm3

vpcmpeqb %xmm3, %xmm3, %xmm5
vpcmpeqd %xmm3, %xmm3, %xmm5
vpcmpeqq %xmm3, %xmm3, %xmm5
vpcmpeqw %xmm3, %xmm3, %xmm5

# FIXME: their handling is broken in llvm-mca.

# CHECK: Iterations: 1
# CHECK-NEXT: Instructions: 15
# CHECK-NEXT: Total Cycles: 12
# CHECK-NEXT: Dispatch Width: 2
# CHECK-NEXT: IPC: 1.25
# CHECK-NEXT: Block RThroughput: 7.5

# 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

# CHECK: [1] [2] [3] [4] [5] [6] Instructions:
# CHECK-NEXT: 1 1 0.50 pcmpeqb %mm2, %mm2
# CHECK-NEXT: 1 1 0.50 pcmpeqd %mm2, %mm2
# CHECK-NEXT: 1 1 0.50 pcmpeqw %mm2, %mm2
# CHECK-NEXT: 1 1 0.50 pcmpeqb %xmm2, %xmm2
# CHECK-NEXT: 1 1 0.50 pcmpeqd %xmm2, %xmm2
# CHECK-NEXT: 1 1 0.50 pcmpeqq %xmm2, %xmm2
# CHECK-NEXT: 1 1 0.50 pcmpeqw %xmm2, %xmm2
# CHECK-NEXT: 1 1 0.50 vpcmpeqb %xmm3, %xmm3, %xmm3
# CHECK-NEXT: 1 1 0.50 vpcmpeqd %xmm3, %xmm3, %xmm3
# CHECK-NEXT: 1 1 0.50 vpcmpeqq %xmm3, %xmm3, %xmm3
# CHECK-NEXT: 1 1 0.50 vpcmpeqw %xmm3, %xmm3, %xmm3
# CHECK-NEXT: 1 1 0.50 vpcmpeqb %xmm3, %xmm3, %xmm5
# CHECK-NEXT: 1 1 0.50 vpcmpeqd %xmm3, %xmm3, %xmm5
# CHECK-NEXT: 1 1 0.50 vpcmpeqq %xmm3, %xmm3, %xmm5
# CHECK-NEXT: 1 1 0.50 vpcmpeqw %xmm3, %xmm3, %xmm5

# CHECK: Register File statistics:
# CHECK-NEXT: Total number of mappings created: 15
# CHECK-NEXT: Max number of mappings used: 8

# CHECK: * Register File #1 -- JFpuPRF:
# CHECK-NEXT: Number of physical registers: 72
# CHECK-NEXT: Total number of mappings created: 15
# CHECK-NEXT: Max number of mappings used: 8

# CHECK: * Register File #2 -- JIntegerPRF:
# CHECK-NEXT: Number of physical registers: 64
# CHECK-NEXT: Total number of mappings created: 0
# CHECK-NEXT: Max number of mappings used: 0

# CHECK: Resources:
# CHECK-NEXT: [0] - JALU0
# CHECK-NEXT: [1] - JALU1
# CHECK-NEXT: [2] - JDiv
# CHECK-NEXT: [3] - JFPA
# CHECK-NEXT: [4] - JFPM
# CHECK-NEXT: [5] - JFPU0
# CHECK-NEXT: [6] - JFPU1
# CHECK-NEXT: [7] - JLAGU
# CHECK-NEXT: [8] - JMul
# CHECK-NEXT: [9] - JSAGU
# CHECK-NEXT: [10] - JSTC
# CHECK-NEXT: [11] - JVALU0
# CHECK-NEXT: [12] - JVALU1
# CHECK-NEXT: [13] - JVIMUL

# CHECK: Resource pressure per iteration:
# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13]
# CHECK-NEXT: - - - - - 7.00 8.00 - - - - 7.00 8.00 -

# CHECK: Resource pressure by instruction:
# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] Instructions:
# CHECK-NEXT: - - - - - - 1.00 - - - - - 1.00 - pcmpeqb %mm2, %mm2
# CHECK-NEXT: - - - - - 1.00 - - - - - 1.00 - - pcmpeqd %mm2, %mm2
# CHECK-NEXT: - - - - - 1.00 - - - - - 1.00 - - pcmpeqw %mm2, %mm2
# CHECK-NEXT: - - - - - - 1.00 - - - - - 1.00 - pcmpeqb %xmm2, %xmm2
# CHECK-NEXT: - - - - - - 1.00 - - - - - 1.00 - pcmpeqd %xmm2, %xmm2
# CHECK-NEXT: - - - - - 1.00 - - - - - 1.00 - - pcmpeqq %xmm2, %xmm2
# CHECK-NEXT: - - - - - 1.00 - - - - - 1.00 - - pcmpeqw %xmm2, %xmm2
# CHECK-NEXT: - - - - - - 1.00 - - - - - 1.00 - vpcmpeqb %xmm3, %xmm3, %xmm3
# CHECK-NEXT: - - - - - - 1.00 - - - - - 1.00 - vpcmpeqd %xmm3, %xmm3, %xmm3
# CHECK-NEXT: - - - - - 1.00 - - - - - 1.00 - - vpcmpeqq %xmm3, %xmm3, %xmm3
# CHECK-NEXT: - - - - - - 1.00 - - - - - 1.00 - vpcmpeqw %xmm3, %xmm3, %xmm3
# CHECK-NEXT: - - - - - 1.00 - - - - - 1.00 - - vpcmpeqb %xmm3, %xmm3, %xmm5
# CHECK-NEXT: - - - - - - 1.00 - - - - - 1.00 - vpcmpeqd %xmm3, %xmm3, %xmm5
# CHECK-NEXT: - - - - - 1.00 - - - - - 1.00 - - vpcmpeqq %xmm3, %xmm3, %xmm5
# CHECK-NEXT: - - - - - - 1.00 - - - - - 1.00 - vpcmpeqw %xmm3, %xmm3, %xmm5

# CHECK: Timeline view:
# CHECK-NEXT: 01
# CHECK-NEXT: Index 0123456789

# CHECK: [0,0] DeER . .. pcmpeqb %mm2, %mm2
# CHECK-NEXT: [0,1] D=eER. .. pcmpeqd %mm2, %mm2
# CHECK-NEXT: [0,2] .D=eER .. pcmpeqw %mm2, %mm2
# CHECK-NEXT: [0,3] .DeE-R .. pcmpeqb %xmm2, %xmm2
# CHECK-NEXT: [0,4] . DeE-R .. pcmpeqd %xmm2, %xmm2
# CHECK-NEXT: [0,5] . D=eER .. pcmpeqq %xmm2, %xmm2
# CHECK-NEXT: [0,6] . D=eER .. pcmpeqw %xmm2, %xmm2
# CHECK-NEXT: [0,7] . DeE-R .. vpcmpeqb %xmm3, %xmm3, %xmm3
# CHECK-NEXT: [0,8] . DeE-R .. vpcmpeqd %xmm3, %xmm3, %xmm3
# CHECK-NEXT: [0,9] . D=eER .. vpcmpeqq %xmm3, %xmm3, %xmm3
# CHECK-NEXT: [0,10] . D=eER.. vpcmpeqw %xmm3, %xmm3, %xmm3
# CHECK-NEXT: [0,11] . D==eER. vpcmpeqb %xmm3, %xmm3, %xmm5
# CHECK-NEXT: [0,12] . .D=eER. vpcmpeqd %xmm3, %xmm3, %xmm5
# CHECK-NEXT: [0,13] . .D==eER vpcmpeqq %xmm3, %xmm3, %xmm5
# CHECK-NEXT: [0,14] . . D=eER vpcmpeqw %xmm3, %xmm3, %xmm5

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

# CHECK: [0] [1] [2] [3]
# CHECK-NEXT: 0. 1 1.0 1.0 0.0 pcmpeqb %mm2, %mm2
# CHECK-NEXT: 1. 1 2.0 0.0 0.0 pcmpeqd %mm2, %mm2
# CHECK-NEXT: 2. 1 2.0 0.0 0.0 pcmpeqw %mm2, %mm2
# CHECK-NEXT: 3. 1 1.0 1.0 1.0 pcmpeqb %xmm2, %xmm2
# CHECK-NEXT: 4. 1 1.0 0.0 1.0 pcmpeqd %xmm2, %xmm2
# CHECK-NEXT: 5. 1 2.0 0.0 0.0 pcmpeqq %xmm2, %xmm2
# CHECK-NEXT: 6. 1 2.0 0.0 0.0 pcmpeqw %xmm2, %xmm2
# CHECK-NEXT: 7. 1 1.0 1.0 1.0 vpcmpeqb %xmm3, %xmm3, %xmm3
# CHECK-NEXT: 8. 1 1.0 0.0 1.0 vpcmpeqd %xmm3, %xmm3, %xmm3
# CHECK-NEXT: 9. 1 2.0 0.0 0.0 vpcmpeqq %xmm3, %xmm3, %xmm3
# CHECK-NEXT: 10. 1 2.0 0.0 0.0 vpcmpeqw %xmm3, %xmm3, %xmm3
# CHECK-NEXT: 11. 1 3.0 0.0 0.0 vpcmpeqb %xmm3, %xmm3, %xmm5
# CHECK-NEXT: 12. 1 2.0 0.0 0.0 vpcmpeqd %xmm3, %xmm3, %xmm5
# CHECK-NEXT: 13. 1 3.0 1.0 0.0 vpcmpeqq %xmm3, %xmm3, %xmm5
# CHECK-NEXT: 14. 1 2.0 1.0 0.0 vpcmpeqw %xmm3, %xmm3, %xmm5
3 changes: 3 additions & 0 deletions llvm/test/tools/llvm-mca/X86/BtVer2/zero-idioms.s
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Expand Up @@ -8,11 +8,14 @@ xorq %rax, %rax

pcmpgtb %mm2, %mm2
pcmpgtd %mm2, %mm2
# pcmpgtq %mm2, %mm2 # invalid operand for instruction
pcmpgtw %mm2, %mm2

pcmpgtb %xmm2, %xmm2
pcmpgtd %xmm2, %xmm2
pcmpgtq %xmm2, %xmm2
pcmpgtw %xmm2, %xmm2

vpcmpgtb %xmm3, %xmm3, %xmm3
vpcmpgtd %xmm3, %xmm3, %xmm3
vpcmpgtq %xmm3, %xmm3, %xmm3
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