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[llvm-mca] Add a test for zero-idiom VPERM2F128rr. NFC

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We don't correctly model the latency and resource usage information for
zero-idiom VPERM2F128rr on Jaguar.

This is demonstrated by the incorrect numbers in the resource pressure view, and
the timeline view.
A follow up patch will fix this problem.

llvm-svn: 343346
This commit is contained in:
Andrea Di Biagio 2018-09-28 17:47:09 +00:00
parent 5762149801
commit 0b2c6ef5cb
1 changed files with 75 additions and 0 deletions
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75
test/tools/llvm-mca/X86/BtVer2/zero-idioms-avx-256.s
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@ -31,6 +31,11 @@ vaddps %ymm0, %ymm1, %ymm2
vandnps %ymm2, %ymm2, %ymm3
# LLVM-MCA-END
# LLVM-MCA-BEGIN ZERO-IDIOM-5
vperm2f128 $136, %ymm0, %ymm0, %ymm1
vaddps %ymm1, %ymm1, %ymm0
# LLVM-MCA-END
# CHECK: [0] Code Region - ZERO-IDIOM-1
# CHECK: Iterations: 100
@ -320,3 +325,73 @@ vandnps %ymm2, %ymm2, %ymm3
# CHECK: [0] [1] [2] [3]
# CHECK-NEXT: 0. 3 1.0 1.0 0.0 vaddps %ymm0, %ymm1, %ymm2
# CHECK-NEXT: 1. 3 1.0 1.0 1.0 vandnps %ymm2, %ymm2, %ymm3
# CHECK: [4] Code Region - ZERO-IDIOM-5
# CHECK: Iterations: 100
# CHECK-NEXT: Instructions: 200
# CHECK-NEXT: Total Cycles: 403
# CHECK-NEXT: Total uOps: 400
# CHECK: Dispatch Width: 2
# CHECK-NEXT: uOps Per Cycle: 0.99
# CHECK-NEXT: IPC: 0.50
# CHECK-NEXT: Block RThroughput: 2.0
# 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: 2 1 1.00 vperm2f128 $136, %ymm0, %ymm0, %ymm1
# CHECK-NEXT: 2 3 2.00 vaddps %ymm1, %ymm1, %ymm0
# 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: - - - 2.00 2.00 2.00 2.00 - - - - - - -
# CHECK: Resource pressure by instruction:
# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] Instructions:
# CHECK-NEXT: - - - - 2.00 - 2.00 - - - - - - - vperm2f128 $136, %ymm0, %ymm0, %ymm1
# CHECK-NEXT: - - - 2.00 - 2.00 - - - - - - - - vaddps %ymm1, %ymm1, %ymm0
# CHECK: Timeline view:
# CHECK-NEXT: 01234
# CHECK-NEXT: Index 0123456789
# CHECK: [0,0] DeER . . . vperm2f128 $136, %ymm0, %ymm0, %ymm1
# CHECK-NEXT: [0,1] .DeeeER . . vaddps %ymm1, %ymm1, %ymm0
# CHECK-NEXT: [1,0] . D==eER . . vperm2f128 $136, %ymm0, %ymm0, %ymm1
# CHECK-NEXT: [1,1] . D==eeeER . vaddps %ymm1, %ymm1, %ymm0
# CHECK-NEXT: [2,0] . D====eER . vperm2f128 $136, %ymm0, %ymm0, %ymm1
# CHECK-NEXT: [2,1] . D====eeeER vaddps %ymm1, %ymm1, %ymm0
# 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. 3 3.0 0.3 0.0 vperm2f128 $136, %ymm0, %ymm0, %ymm1
# CHECK-NEXT: 1. 3 3.0 0.0 0.0 vaddps %ymm1, %ymm1, %ymm0