test/tools/llvm-mca/X86/BtVer2/partial-reg-update-3.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=1500 -timeline -timeline-max-iterations=3 < %s | FileCheck %s
   3
   4 # perf stat reports a throughput of 1.00 IPC for this code snippet.
   5
   6 # The ILP is limited by the false dependency on %dx. So, the mov cannot execute
   7 # in parallel with the add.
   8
   9 add %cx, %dx
  10 mov %ax, %dx
  11 xor %bx, %dx
  12
  13 # CHECK:      Iterations:        1500
  14 # CHECK-NEXT: Instructions:      4500
  15 # CHECK-NEXT: Total Cycles:      4503
  16 # CHECK-NEXT: Total uOps:        4500
  17
  18 # CHECK:      Dispatch Width:    2
  19 # CHECK-NEXT: uOps Per Cycle:    1.00
  20 # CHECK-NEXT: IPC:               1.00
  21 # CHECK-NEXT: Block RThroughput: 1.5
  22
  23 # CHECK:      Instruction Info:
  24 # CHECK-NEXT: [1]: #uOps
  25 # CHECK-NEXT: [2]: Latency
  26 # CHECK-NEXT: [3]: RThroughput
  27 # CHECK-NEXT: [4]: MayLoad
  28 # CHECK-NEXT: [5]: MayStore
  29 # CHECK-NEXT: [6]: HasSideEffects (U)
  30
  31 # CHECK:      [1]    [2]    [3]    [4]    [5]    [6]    Instructions:
  32 # CHECK-NEXT:  1      1     0.50                        addw    %cx, %dx
  33 # CHECK-NEXT:  1      1     0.50                        movw    %ax, %dx
  34 # CHECK-NEXT:  1      1     0.50                        xorw    %bx, %dx
  35
  36 # CHECK:      Resources:
  37 # CHECK-NEXT: [0]   - JALU0
  38 # CHECK-NEXT: [1]   - JALU1
  39 # CHECK-NEXT: [2]   - JDiv
  40 # CHECK-NEXT: [3]   - JFPA
  41 # CHECK-NEXT: [4]   - JFPM
  42 # CHECK-NEXT: [5]   - JFPU0
  43 # CHECK-NEXT: [6]   - JFPU1
  44 # CHECK-NEXT: [7]   - JLAGU
  45 # CHECK-NEXT: [8]   - JMul
  46 # CHECK-NEXT: [9]   - JSAGU
  47 # CHECK-NEXT: [10]  - JSTC
  48 # CHECK-NEXT: [11]  - JVALU0
  49 # CHECK-NEXT: [12]  - JVALU1
  50 # CHECK-NEXT: [13]  - JVIMUL
  51
  52 # CHECK:      Resource pressure per iteration:
  53 # CHECK-NEXT: [0]    [1]    [2]    [3]    [4]    [5]    [6]    [7]    [8]    [9]    [10]   [11]   [12]   [13]
  54 # CHECK-NEXT: 1.50   1.50    -      -      -      -      -      -      -      -      -      -      -      -
  55
  56 # CHECK:      Resource pressure by instruction:
  57 # CHECK-NEXT: [0]    [1]    [2]    [3]    [4]    [5]    [6]    [7]    [8]    [9]    [10]   [11]   [12]   [13]   Instructions:
  58 # CHECK-NEXT: 0.50   0.50    -      -      -      -      -      -      -      -      -      -      -      -     addw    %cx, %dx
  59 # CHECK-NEXT: 0.50   0.50    -      -      -      -      -      -      -      -      -      -      -      -     movw    %ax, %dx
  60 # CHECK-NEXT: 0.50   0.50    -      -      -      -      -      -      -      -      -      -      -      -     xorw    %bx, %dx
  61
  62 # CHECK:      Timeline view:
  63 # CHECK-NEXT:                     01
  64 # CHECK-NEXT: Index     0123456789
  65
  66 # CHECK:      [0,0]     DeER .    ..   addw     %cx, %dx
  67 # CHECK-NEXT: [0,1]     D=eER.    ..   movw     %ax, %dx
  68 # CHECK-NEXT: [0,2]     .D=eER    ..   xorw     %bx, %dx
  69 # CHECK-NEXT: [1,0]     .D==eER   ..   addw     %cx, %dx
  70 # CHECK-NEXT: [1,1]     . D==eER  ..   movw     %ax, %dx
  71 # CHECK-NEXT: [1,2]     . D===eER ..   xorw     %bx, %dx
  72 # CHECK-NEXT: [2,0]     .  D===eER..   addw     %cx, %dx
  73 # CHECK-NEXT: [2,1]     .  D====eER.   movw     %ax, %dx
  74 # CHECK-NEXT: [2,2]     .   D====eER   xorw     %bx, %dx
  75
  76 # CHECK:      Average Wait times (based on the timeline view):
  77 # CHECK-NEXT: [0]: Executions
  78 # CHECK-NEXT: [1]: Average time spent waiting in a scheduler's queue
  79 # CHECK-NEXT: [2]: Average time spent waiting in a scheduler's queue while ready
  80 # CHECK-NEXT: [3]: Average time elapsed from WB until retire stage
  81
  82 # CHECK:            [0]    [1]    [2]    [3]
  83 # CHECK-NEXT: 0.     3     2.7    0.3    0.0       addw %cx, %dx
  84 # CHECK-NEXT: 1.     3     3.3    0.0    0.0       movw %ax, %dx
  85 # CHECK-NEXT: 2.     3     3.7    0.0    0.0       xorw %bx, %dx