test/tools/llvm-mca/X86/BtVer2/partial-reg-update-5.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 lzcnt %ax, %bx  ## partial register stall.
   7
   8 # CHECK:      Iterations:        1500
   9 # CHECK-NEXT: Instructions:      1500
  10 # CHECK-NEXT: Total Cycles:      1503
  11 # CHECK-NEXT: Total uOps:        1500
  12
  13 # CHECK:      Dispatch Width:    2
  14 # CHECK-NEXT: uOps Per Cycle:    1.00
  15 # CHECK-NEXT: IPC:               1.00
  16 # CHECK-NEXT: Block RThroughput: 0.5
  17
  18 # CHECK:      Instruction Info:
  19 # CHECK-NEXT: [1]: #uOps
  20 # CHECK-NEXT: [2]: Latency
  21 # CHECK-NEXT: [3]: RThroughput
  22 # CHECK-NEXT: [4]: MayLoad
  23 # CHECK-NEXT: [5]: MayStore
  24 # CHECK-NEXT: [6]: HasSideEffects (U)
  25
  26 # CHECK:      [1]    [2]    [3]    [4]    [5]    [6]    Instructions:
  27 # CHECK-NEXT:  1      1     0.50                        lzcntw  %ax, %bx
  28
  29 # CHECK:      Resources:
  30 # CHECK-NEXT: [0]   - JALU0
  31 # CHECK-NEXT: [1]   - JALU1
  32 # CHECK-NEXT: [2]   - JDiv
  33 # CHECK-NEXT: [3]   - JFPA
  34 # CHECK-NEXT: [4]   - JFPM
  35 # CHECK-NEXT: [5]   - JFPU0
  36 # CHECK-NEXT: [6]   - JFPU1
  37 # CHECK-NEXT: [7]   - JLAGU
  38 # CHECK-NEXT: [8]   - JMul
  39 # CHECK-NEXT: [9]   - JSAGU
  40 # CHECK-NEXT: [10]  - JSTC
  41 # CHECK-NEXT: [11]  - JVALU0
  42 # CHECK-NEXT: [12]  - JVALU1
  43 # CHECK-NEXT: [13]  - JVIMUL
  44
  45 # CHECK:      Resource pressure per iteration:
  46 # CHECK-NEXT: [0]    [1]    [2]    [3]    [4]    [5]    [6]    [7]    [8]    [9]    [10]   [11]   [12]   [13]
  47 # CHECK-NEXT: 0.50   0.50    -      -      -      -      -      -      -      -      -      -      -      -
  48
  49 # CHECK:      Resource pressure by instruction:
  50 # CHECK-NEXT: [0]    [1]    [2]    [3]    [4]    [5]    [6]    [7]    [8]    [9]    [10]   [11]   [12]   [13]   Instructions:
  51 # CHECK-NEXT: 0.50   0.50    -      -      -      -      -      -      -      -      -      -      -      -     lzcntw  %ax, %bx
  52
  53 # CHECK:      Timeline view:
  54 # CHECK-NEXT: Index     012345
  55
  56 # CHECK:      [0,0]     DeER .   lzcntw %ax, %bx
  57 # CHECK-NEXT: [1,0]     D=eER.   lzcntw %ax, %bx
  58 # CHECK-NEXT: [2,0]     .D=eER   lzcntw %ax, %bx
  59
  60 # CHECK:      Average Wait times (based on the timeline view):
  61 # CHECK-NEXT: [0]: Executions
  62 # CHECK-NEXT: [1]: Average time spent waiting in a scheduler's queue
  63 # CHECK-NEXT: [2]: Average time spent waiting in a scheduler's queue while ready
  64 # CHECK-NEXT: [3]: Average time elapsed from WB until retire stage
  65
  66 # CHECK:            [0]    [1]    [2]    [3]
  67 # CHECK-NEXT: 0.     3     1.7    0.3    0.0       lzcntw       %ax, %bx