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1# NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py2# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=btver2 -iterations=1500 -timeline -timeline-max-iterations=3 < %s | FileCheck %s3 4# perf stat reports a throughput of 0.60 IPC for this code snippet.5 6# The lzcnt cannot execute in parallel with the imul because there is a false7# dependency on %bx.8 9imul %ax, %bx10lzcnt %ax, %bx11add %cx, %bx12 13# CHECK: Iterations: 150014# CHECK-NEXT: Instructions: 450015# CHECK-NEXT: Total Cycles: 750316# CHECK-NEXT: Total uOps: 450017 18# CHECK: Dispatch Width: 219# CHECK-NEXT: uOps Per Cycle: 0.6020# CHECK-NEXT: IPC: 0.6021# CHECK-NEXT: Block RThroughput: 1.522 23# CHECK: Instruction Info:24# CHECK-NEXT: [1]: #uOps25# CHECK-NEXT: [2]: Latency26# CHECK-NEXT: [3]: RThroughput27# CHECK-NEXT: [4]: MayLoad28# CHECK-NEXT: [5]: MayStore29# CHECK-NEXT: [6]: HasSideEffects (U)30 31# CHECK: [1] [2] [3] [4] [5] [6] Instructions:32# CHECK-NEXT: 1 3 1.00 imulw %ax, %bx33# CHECK-NEXT: 1 1 0.50 lzcntw %ax, %bx34# CHECK-NEXT: 1 1 0.50 addw %cx, %bx35 36# CHECK: Resources:37# CHECK-NEXT: [0] - JALU038# CHECK-NEXT: [1] - JALU139# CHECK-NEXT: [2] - JDiv40# CHECK-NEXT: [3] - JFPA41# CHECK-NEXT: [4] - JFPM42# CHECK-NEXT: [5] - JFPU043# CHECK-NEXT: [6] - JFPU144# CHECK-NEXT: [7] - JLAGU45# CHECK-NEXT: [8] - JMul46# CHECK-NEXT: [9] - JSAGU47# CHECK-NEXT: [10] - JSTC48# CHECK-NEXT: [11] - JVALU049# CHECK-NEXT: [12] - JVALU150# CHECK-NEXT: [13] - JVIMUL51 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 - - - - - - 1.00 - - - - -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: - 1.00 - - - - - - 1.00 - - - - - imulw %ax, %bx59# CHECK-NEXT: 1.00 - - - - - - - - - - - - - lzcntw %ax, %bx60# CHECK-NEXT: 0.50 0.50 - - - - - - - - - - - - addw %cx, %bx61 62# CHECK: Timeline view:63# CHECK-NEXT: 0123456764# CHECK-NEXT: Index 012345678965 66# CHECK: [0,0] DeeeER . . . imulw %ax, %bx67# CHECK-NEXT: [0,1] D===eER . . . lzcntw %ax, %bx68# CHECK-NEXT: [0,2] .D===eER . . . addw %cx, %bx69# CHECK-NEXT: [1,0] .D====eeeER . . imulw %ax, %bx70# CHECK-NEXT: [1,1] . D======eER . . lzcntw %ax, %bx71# CHECK-NEXT: [1,2] . D=======eER . . addw %cx, %bx72# CHECK-NEXT: [2,0] . D=======eeeER . imulw %ax, %bx73# CHECK-NEXT: [2,1] . D==========eER. lzcntw %ax, %bx74# CHECK-NEXT: [2,2] . D==========eER addw %cx, %bx75 76# CHECK: Average Wait times (based on the timeline view):77# CHECK-NEXT: [0]: Executions78# CHECK-NEXT: [1]: Average time spent waiting in a scheduler's queue79# CHECK-NEXT: [2]: Average time spent waiting in a scheduler's queue while ready80# CHECK-NEXT: [3]: Average time elapsed from WB until retire stage81 82# CHECK: [0] [1] [2] [3]83# CHECK-NEXT: 0. 3 4.7 0.3 0.0 imulw %ax, %bx84# CHECK-NEXT: 1. 3 7.3 0.0 0.0 lzcntw %ax, %bx85# CHECK-NEXT: 2. 3 7.7 0.0 0.0 addw %cx, %bx86# CHECK-NEXT: 3 6.6 0.1 0.0 <total>87