test/tools/llvm-mca/X86/Barcelona/dependency-breaking-cmp.s

   1 # NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py
   2 # RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=x86-64 -timeline -timeline-max-iterations=3 -iterations=1500 < %s | FileCheck %s
   3
   4 # The CMP instruction doesn't depend on the value of EAX.  It can set the flags
   5 # without having to read the inputs.
   6
   7 cmp %eax, %eax
   8 cmovae %ebx, %eax
   9
  10 # CHECK:      Iterations:        1500
  11 # CHECK-NEXT: Instructions:      3000
  12 # CHECK-NEXT: Total Cycles:      4503
  13 # CHECK-NEXT: Total uOps:        4500
  14
  15 # CHECK:      Dispatch Width:    4
  16 # CHECK-NEXT: uOps Per Cycle:    1.00
  17 # CHECK-NEXT: IPC:               0.67
  18 # CHECK-NEXT: Block RThroughput: 0.8
  19
  20 # CHECK:      Instruction Info:
  21 # CHECK-NEXT: [1]: #uOps
  22 # CHECK-NEXT: [2]: Latency
  23 # CHECK-NEXT: [3]: RThroughput
  24 # CHECK-NEXT: [4]: MayLoad
  25 # CHECK-NEXT: [5]: MayStore
  26 # CHECK-NEXT: [6]: HasSideEffects (U)
  27
  28 # CHECK:      [1]    [2]    [3]    [4]    [5]    [6]    Instructions:
  29 # CHECK-NEXT:  1      1     0.33                        cmpl    %eax, %eax
  30 # CHECK-NEXT:  2      2     0.67                        cmovael %ebx, %eax
  31
  32 # CHECK:      Resources:
  33 # CHECK-NEXT: [0]   - SBDivider
  34 # CHECK-NEXT: [1]   - SBFPDivider
  35 # CHECK-NEXT: [2]   - SBPort0
  36 # CHECK-NEXT: [3]   - SBPort1
  37 # CHECK-NEXT: [4]   - SBPort4
  38 # CHECK-NEXT: [5]   - SBPort5
  39 # CHECK-NEXT: [6.0] - SBPort23
  40 # CHECK-NEXT: [6.1] - SBPort23
  41
  42 # CHECK:      Resource pressure per iteration:
  43 # CHECK-NEXT: [0]    [1]    [2]    [3]    [4]    [5]    [6.0]  [6.1]
  44 # CHECK-NEXT:  -      -     1.00   1.00    -     1.00    -      -
  45
  46 # CHECK:      Resource pressure by instruction:
  47 # CHECK-NEXT: [0]    [1]    [2]    [3]    [4]    [5]    [6.0]  [6.1]  Instructions:
  48 # CHECK-NEXT:  -      -      -      -      -     1.00    -      -     cmpl      %eax, %eax
  49 # CHECK-NEXT:  -      -     1.00   1.00    -      -      -      -     cmovael   %ebx, %eax
  50
  51 # CHECK:      Timeline view:
  52 # CHECK-NEXT:                     01
  53 # CHECK-NEXT: Index     0123456789
  54
  55 # CHECK:      [0,0]     DeER .    ..   cmpl     %eax, %eax
  56 # CHECK-NEXT: [0,1]     D=eeER    ..   cmovael  %ebx, %eax
  57 # CHECK-NEXT: [1,0]     D===eER   ..   cmpl     %eax, %eax
  58 # CHECK-NEXT: [1,1]     .D===eeER ..   cmovael  %ebx, %eax
  59 # CHECK-NEXT: [2,0]     .D=====eER..   cmpl     %eax, %eax
  60 # CHECK-NEXT: [2,1]     . D=====eeER   cmovael  %ebx, %eax
  61
  62 # CHECK:      Average Wait times (based on the timeline view):
  63 # CHECK-NEXT: [0]: Executions
  64 # CHECK-NEXT: [1]: Average time spent waiting in a scheduler's queue
  65 # CHECK-NEXT: [2]: Average time spent waiting in a scheduler's queue while ready
  66 # CHECK-NEXT: [3]: Average time elapsed from WB until retire stage
  67
  68 # CHECK:            [0]    [1]    [2]    [3]
  69 # CHECK-NEXT: 0.     3     3.7    0.3    0.0       cmpl %eax, %eax
  70 # CHECK-NEXT: 1.     3     4.0    0.0    0.0       cmovael      %ebx, %eax
  71 # CHECK-NEXT:        3     3.8    0.2    0.0       <total>