test/tools/llvm-mca/X86/BtVer2/bottleneck-hints-2.s

   1 # NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py
   2 # RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=btver2 -iterations=100 -timeline -timeline-max-iterations=1 -bottleneck-analysis < %s | FileCheck %s
   3
   4 vhaddps %xmm0, %xmm0, %xmm1
   5
   6 # CHECK:      Iterations:        100
   7 # CHECK-NEXT: Instructions:      100
   8 # CHECK-NEXT: Total Cycles:      106
   9 # CHECK-NEXT: Total uOps:        100
  10
  11 # CHECK:      Dispatch Width:    2
  12 # CHECK-NEXT: uOps Per Cycle:    0.94
  13 # CHECK-NEXT: IPC:               0.94
  14 # CHECK-NEXT: Block RThroughput: 1.0
  15
  16 # CHECK:      Cycles with backend pressure increase [ 76.42% ]
  17 # CHECK-NEXT: Throughput Bottlenecks:
  18 # CHECK-NEXT:   Resource Pressure       [ 76.42% ]
  19 # CHECK-NEXT:   - JFPA  [ 76.42% ]
  20 # CHECK-NEXT:   - JFPU0  [ 76.42% ]
  21 # CHECK-NEXT:   Data Dependencies:      [ 0.00% ]
  22 # CHECK-NEXT:   - Register Dependencies [ 0.00% ]
  23 # CHECK-NEXT:   - Memory Dependencies   [ 0.00% ]
  24
  25 # CHECK:      Critical sequence based on the simulation:
  26
  27 # CHECK:                    Instruction                                 Dependency Information
  28 # CHECK-NEXT:  +----< 0.    vhaddps     %xmm0, %xmm0, %xmm1
  29 # CHECK-NEXT:  |
  30 # CHECK-NEXT:  |    < loop carried >
  31 # CHECK-NEXT:  |
  32 # CHECK-NEXT:  +----> 0.    vhaddps     %xmm0, %xmm0, %xmm1               ## RESOURCE interference:  JFPA [ probability: 99% ]
  33 # CHECK-NEXT:  |
  34 # CHECK-NEXT:  |    < loop carried >
  35 # CHECK-NEXT:  |
  36 # CHECK-NEXT:  +----> 0.    vhaddps     %xmm0, %xmm0, %xmm1               ## RESOURCE interference:  JFPA [ probability: 99% ]
  37
  38 # CHECK:      Instruction Info:
  39 # CHECK-NEXT: [1]: #uOps
  40 # CHECK-NEXT: [2]: Latency
  41 # CHECK-NEXT: [3]: RThroughput
  42 # CHECK-NEXT: [4]: MayLoad
  43 # CHECK-NEXT: [5]: MayStore
  44 # CHECK-NEXT: [6]: HasSideEffects (U)
  45
  46 # CHECK:      [1]    [2]    [3]    [4]    [5]    [6]    Instructions:
  47 # CHECK-NEXT:  1      4     1.00                        vhaddps %xmm0, %xmm0, %xmm1
  48
  49 # CHECK:      Resources:
  50 # CHECK-NEXT: [0]   - JALU0
  51 # CHECK-NEXT: [1]   - JALU1
  52 # CHECK-NEXT: [2]   - JDiv
  53 # CHECK-NEXT: [3]   - JFPA
  54 # CHECK-NEXT: [4]   - JFPM
  55 # CHECK-NEXT: [5]   - JFPU0
  56 # CHECK-NEXT: [6]   - JFPU1
  57 # CHECK-NEXT: [7]   - JLAGU
  58 # CHECK-NEXT: [8]   - JMul
  59 # CHECK-NEXT: [9]   - JSAGU
  60 # CHECK-NEXT: [10]  - JSTC
  61 # CHECK-NEXT: [11]  - JVALU0
  62 # CHECK-NEXT: [12]  - JVALU1
  63 # CHECK-NEXT: [13]  - JVIMUL
  64
  65 # CHECK:      Resource pressure per iteration:
  66 # CHECK-NEXT: [0]    [1]    [2]    [3]    [4]    [5]    [6]    [7]    [8]    [9]    [10]   [11]   [12]   [13]
  67 # CHECK-NEXT:  -      -      -     1.00    -     1.00    -      -      -      -      -      -      -      -
  68
  69 # CHECK:      Resource pressure by instruction:
  70 # CHECK-NEXT: [0]    [1]    [2]    [3]    [4]    [5]    [6]    [7]    [8]    [9]    [10]   [11]   [12]   [13]   Instructions:
  71 # CHECK-NEXT:  -      -      -     1.00    -     1.00    -      -      -      -      -      -      -      -     vhaddps %xmm0, %xmm0, %xmm1
  72
  73 # CHECK:      Timeline view:
  74 # CHECK-NEXT: Index     0123456
  75
  76 # CHECK:      [0,0]     DeeeeER   vhaddps       %xmm0, %xmm0, %xmm1
  77
  78 # CHECK:      Average Wait times (based on the timeline view):
  79 # CHECK-NEXT: [0]: Executions
  80 # CHECK-NEXT: [1]: Average time spent waiting in a scheduler's queue
  81 # CHECK-NEXT: [2]: Average time spent waiting in a scheduler's queue while ready
  82 # CHECK-NEXT: [3]: Average time elapsed from WB until retire stage
  83
  84 # CHECK:            [0]    [1]    [2]    [3]
  85 # CHECK-NEXT: 0.     1     1.0    1.0    0.0       vhaddps      %xmm0, %xmm0, %xmm1