test/tools/llvm-mca/X86/BtVer2/dependency-breaking-pcmpeq.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=3 -iterations=1500 < %s | FileCheck %s
   3
   4 # perf stat reports an IPC of 2.00 for this block of code.
   5
   6 # All of the vector packed compares from this test are dependency breaking
   7 # instructions. That means, there is no RAW dependency between any of the
   8 # instructions, and the code can be fully parallelized in hardware.
   9
  10 vpcmpeqb %xmm0, %xmm0, %xmm1
  11 vpcmpeqw %xmm1, %xmm1, %xmm2
  12 vpcmpeqd %xmm2, %xmm2, %xmm3
  13 vpcmpeqq %xmm3, %xmm3, %xmm0
  14
  15 # CHECK:      Iterations:        1500
  16 # CHECK-NEXT: Instructions:      6000
  17 # CHECK-NEXT: Total Cycles:      3003
  18 # CHECK-NEXT: Total uOps:        6000
  19
  20 # CHECK:      Dispatch Width:    2
  21 # CHECK-NEXT: uOps Per Cycle:    2.00
  22 # CHECK-NEXT: IPC:               2.00
  23 # CHECK-NEXT: Block RThroughput: 2.0
  24
  25 # CHECK:      Instruction Info:
  26 # CHECK-NEXT: [1]: #uOps
  27 # CHECK-NEXT: [2]: Latency
  28 # CHECK-NEXT: [3]: RThroughput
  29 # CHECK-NEXT: [4]: MayLoad
  30 # CHECK-NEXT: [5]: MayStore
  31 # CHECK-NEXT: [6]: HasSideEffects (U)
  32
  33 # CHECK:      [1]    [2]    [3]    [4]    [5]    [6]    Instructions:
  34 # CHECK-NEXT:  1      1     0.50                        vpcmpeqb        %xmm0, %xmm0, %xmm1
  35 # CHECK-NEXT:  1      1     0.50                        vpcmpeqw        %xmm1, %xmm1, %xmm2
  36 # CHECK-NEXT:  1      1     0.50                        vpcmpeqd        %xmm2, %xmm2, %xmm3
  37 # CHECK-NEXT:  1      1     0.50                        vpcmpeqq        %xmm3, %xmm3, %xmm0
  38
  39 # CHECK:      Resources:
  40 # CHECK-NEXT: [0]   - JALU0
  41 # CHECK-NEXT: [1]   - JALU1
  42 # CHECK-NEXT: [2]   - JDiv
  43 # CHECK-NEXT: [3]   - JFPA
  44 # CHECK-NEXT: [4]   - JFPM
  45 # CHECK-NEXT: [5]   - JFPU0
  46 # CHECK-NEXT: [6]   - JFPU1
  47 # CHECK-NEXT: [7]   - JLAGU
  48 # CHECK-NEXT: [8]   - JMul
  49 # CHECK-NEXT: [9]   - JSAGU
  50 # CHECK-NEXT: [10]  - JSTC
  51 # CHECK-NEXT: [11]  - JVALU0
  52 # CHECK-NEXT: [12]  - JVALU1
  53 # CHECK-NEXT: [13]  - JVIMUL
  54
  55 # CHECK:      Resource pressure per iteration:
  56 # CHECK-NEXT: [0]    [1]    [2]    [3]    [4]    [5]    [6]    [7]    [8]    [9]    [10]   [11]   [12]   [13]
  57 # CHECK-NEXT:  -      -      -      -      -     2.00   2.00    -      -      -      -     2.00   2.00    -
  58
  59 # CHECK:      Resource pressure by instruction:
  60 # CHECK-NEXT: [0]    [1]    [2]    [3]    [4]    [5]    [6]    [7]    [8]    [9]    [10]   [11]   [12]   [13]   Instructions:
  61 # CHECK-NEXT:  -      -      -      -      -      -     1.00    -      -      -      -      -     1.00    -     vpcmpeqb        %xmm0, %xmm0, %xmm1
  62 # CHECK-NEXT:  -      -      -      -      -     1.00    -      -      -      -      -     1.00    -      -     vpcmpeqw        %xmm1, %xmm1, %xmm2
  63 # CHECK-NEXT:  -      -      -      -      -      -     1.00    -      -      -      -      -     1.00    -     vpcmpeqd        %xmm2, %xmm2, %xmm3
  64 # CHECK-NEXT:  -      -      -      -      -     1.00    -      -      -      -      -     1.00    -      -     vpcmpeqq        %xmm3, %xmm3, %xmm0
  65
  66 # CHECK:      Timeline view:
  67 # CHECK-NEXT: Index     012345678
  68
  69 # CHECK:      [0,0]     DeER .  .   vpcmpeqb    %xmm0, %xmm0, %xmm1
  70 # CHECK-NEXT: [0,1]     DeER .  .   vpcmpeqw    %xmm1, %xmm1, %xmm2
  71 # CHECK-NEXT: [0,2]     .DeER.  .   vpcmpeqd    %xmm2, %xmm2, %xmm3
  72 # CHECK-NEXT: [0,3]     .DeER.  .   vpcmpeqq    %xmm3, %xmm3, %xmm0
  73 # CHECK-NEXT: [1,0]     . DeER  .   vpcmpeqb    %xmm0, %xmm0, %xmm1
  74 # CHECK-NEXT: [1,1]     . DeER  .   vpcmpeqw    %xmm1, %xmm1, %xmm2
  75 # CHECK-NEXT: [1,2]     .  DeER .   vpcmpeqd    %xmm2, %xmm2, %xmm3
  76 # CHECK-NEXT: [1,3]     .  DeER .   vpcmpeqq    %xmm3, %xmm3, %xmm0
  77 # CHECK-NEXT: [2,0]     .   DeER.   vpcmpeqb    %xmm0, %xmm0, %xmm1
  78 # CHECK-NEXT: [2,1]     .   DeER.   vpcmpeqw    %xmm1, %xmm1, %xmm2
  79 # CHECK-NEXT: [2,2]     .    DeER   vpcmpeqd    %xmm2, %xmm2, %xmm3
  80 # CHECK-NEXT: [2,3]     .    DeER   vpcmpeqq    %xmm3, %xmm3, %xmm0
  81
  82 # CHECK:      Average Wait times (based on the timeline view):
  83 # CHECK-NEXT: [0]: Executions
  84 # CHECK-NEXT: [1]: Average time spent waiting in a scheduler's queue
  85 # CHECK-NEXT: [2]: Average time spent waiting in a scheduler's queue while ready
  86 # CHECK-NEXT: [3]: Average time elapsed from WB until retire stage
  87
  88 # CHECK:            [0]    [1]    [2]    [3]
  89 # CHECK-NEXT: 0.     3     1.0    1.0    0.0       vpcmpeqb     %xmm0, %xmm0, %xmm1
  90 # CHECK-NEXT: 1.     3     1.0    1.0    0.0       vpcmpeqw     %xmm1, %xmm1, %xmm2
  91 # CHECK-NEXT: 2.     3     1.0    1.0    0.0       vpcmpeqd     %xmm2, %xmm2, %xmm3
  92 # CHECK-NEXT: 3.     3     1.0    1.0    0.0       vpcmpeqq     %xmm3, %xmm3, %xmm0