test/tools/llvm-mca/X86/BtVer2/bottleneck-hints-1.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 -timeline -timeline-max-iterations=1 -bottleneck-analysis < %s | FileCheck %s
   3
   4 add %eax, %ebx
   5 add %ebx, %ecx
   6 add %ecx, %edx
   7 add %edx, %eax
   8
   9 # CHECK:      Iterations:        100
  10 # CHECK-NEXT: Instructions:      400
  11 # CHECK-NEXT: Total Cycles:      403
  12 # CHECK-NEXT: Total uOps:        400
  13
  14 # CHECK:      Dispatch Width:    2
  15 # CHECK-NEXT: uOps Per Cycle:    0.99
  16 # CHECK-NEXT: IPC:               0.99
  17 # CHECK-NEXT: Block RThroughput: 2.0
  18
  19 # CHECK:      Cycles with backend pressure increase [ 94.04% ]
  20 # CHECK-NEXT: Throughput Bottlenecks:
  21 # CHECK-NEXT:   Resource Pressure       [ 0.00% ]
  22 # CHECK-NEXT:   Data Dependencies:      [ 94.04% ]
  23 # CHECK-NEXT:   - Register Dependencies [ 94.04% ]
  24 # CHECK-NEXT:   - Memory Dependencies   [ 0.00% ]
  25
  26 # CHECK:      Critical sequence based on the simulation:
  27
  28 # CHECK:                    Instruction                                 Dependency Information
  29 # CHECK-NEXT:  +----< 3.    addl        %edx, %eax
  30 # CHECK-NEXT:  |
  31 # CHECK-NEXT:  |    < loop carried >
  32 # CHECK-NEXT:  |
  33 # CHECK-NEXT:  +----> 0.    addl        %eax, %ebx                        ## REGISTER dependency:  %eax
  34 # CHECK-NEXT:  +----> 1.    addl        %ebx, %ecx                        ## REGISTER dependency:  %ebx
  35 # CHECK-NEXT:  +----> 2.    addl        %ecx, %edx                        ## REGISTER dependency:  %ecx
  36 # CHECK-NEXT:  +----> 3.    addl        %edx, %eax                        ## REGISTER dependency:  %edx
  37 # CHECK-NEXT:  |
  38 # CHECK-NEXT:  |    < loop carried >
  39 # CHECK-NEXT:  |
  40 # CHECK-NEXT:  +----> 0.    addl        %eax, %ebx                        ## REGISTER dependency:  %eax
  41
  42 # CHECK:      Instruction Info:
  43 # CHECK-NEXT: [1]: #uOps
  44 # CHECK-NEXT: [2]: Latency
  45 # CHECK-NEXT: [3]: RThroughput
  46 # CHECK-NEXT: [4]: MayLoad
  47 # CHECK-NEXT: [5]: MayStore
  48 # CHECK-NEXT: [6]: HasSideEffects (U)
  49
  50 # CHECK:      [1]    [2]    [3]    [4]    [5]    [6]    Instructions:
  51 # CHECK-NEXT:  1      1     0.50                        addl    %eax, %ebx
  52 # CHECK-NEXT:  1      1     0.50                        addl    %ebx, %ecx
  53 # CHECK-NEXT:  1      1     0.50                        addl    %ecx, %edx
  54 # CHECK-NEXT:  1      1     0.50                        addl    %edx, %eax
  55
  56 # CHECK:      Resources:
  57 # CHECK-NEXT: [0]   - JALU0
  58 # CHECK-NEXT: [1]   - JALU1
  59 # CHECK-NEXT: [2]   - JDiv
  60 # CHECK-NEXT: [3]   - JFPA
  61 # CHECK-NEXT: [4]   - JFPM
  62 # CHECK-NEXT: [5]   - JFPU0
  63 # CHECK-NEXT: [6]   - JFPU1
  64 # CHECK-NEXT: [7]   - JLAGU
  65 # CHECK-NEXT: [8]   - JMul
  66 # CHECK-NEXT: [9]   - JSAGU
  67 # CHECK-NEXT: [10]  - JSTC
  68 # CHECK-NEXT: [11]  - JVALU0
  69 # CHECK-NEXT: [12]  - JVALU1
  70 # CHECK-NEXT: [13]  - JVIMUL
  71
  72 # CHECK:      Resource pressure per iteration:
  73 # CHECK-NEXT: [0]    [1]    [2]    [3]    [4]    [5]    [6]    [7]    [8]    [9]    [10]   [11]   [12]   [13]
  74 # CHECK-NEXT: 2.00   2.00    -      -      -      -      -      -      -      -      -      -      -      -
  75
  76 # CHECK:      Resource pressure by instruction:
  77 # CHECK-NEXT: [0]    [1]    [2]    [3]    [4]    [5]    [6]    [7]    [8]    [9]    [10]   [11]   [12]   [13]   Instructions:
  78 # CHECK-NEXT:  -     1.00    -      -      -      -      -      -      -      -      -      -      -      -     addl    %eax, %ebx
  79 # CHECK-NEXT: 1.00    -      -      -      -      -      -      -      -      -      -      -      -      -     addl    %ebx, %ecx
  80 # CHECK-NEXT:  -     1.00    -      -      -      -      -      -      -      -      -      -      -      -     addl    %ecx, %edx
  81 # CHECK-NEXT: 1.00    -      -      -      -      -      -      -      -      -      -      -      -      -     addl    %edx, %eax
  82
  83 # CHECK:      Timeline view:
  84 # CHECK-NEXT: Index     0123456
  85
  86 # CHECK:      [0,0]     DeER ..   addl  %eax, %ebx
  87 # CHECK-NEXT: [0,1]     D=eER..   addl  %ebx, %ecx
  88 # CHECK-NEXT: [0,2]     .D=eER.   addl  %ecx, %edx
  89 # CHECK-NEXT: [0,3]     .D==eER   addl  %edx, %eax
  90
  91 # CHECK:      Average Wait times (based on the timeline view):
  92 # CHECK-NEXT: [0]: Executions
  93 # CHECK-NEXT: [1]: Average time spent waiting in a scheduler's queue
  94 # CHECK-NEXT: [2]: Average time spent waiting in a scheduler's queue while ready
  95 # CHECK-NEXT: [3]: Average time elapsed from WB until retire stage
  96
  97 # CHECK:            [0]    [1]    [2]    [3]
  98 # CHECK-NEXT: 0.     1     1.0    1.0    0.0       addl %eax, %ebx
  99 # CHECK-NEXT: 1.     1     2.0    0.0    0.0       addl %ebx, %ecx
 100 # CHECK-NEXT: 2.     1     2.0    0.0    0.0       addl %ecx, %edx
 101 # CHECK-NEXT: 3.     1     3.0    0.0    0.0       addl %edx, %eax