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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 -timeline -timeline-max-iterations=3 -iterations=1500 < %s | FileCheck %s3 4# perf stat reports an IPC of 1.00 for this code block.5 6# Although both SBB are dependency breaking instructions, there is still an7# implicit dependency on EFLAGS which limits the ILP. So, the hardware backend8# can only execute one instruction per cycle.9 10sbb %edx, %edx11sbb %eax, %eax12 13# CHECK: Iterations: 150014# CHECK-NEXT: Instructions: 300015# CHECK-NEXT: Total Cycles: 300316# CHECK-NEXT: Total uOps: 300017 18# CHECK: Dispatch Width: 219# CHECK-NEXT: uOps Per Cycle: 1.0020# CHECK-NEXT: IPC: 1.0021# CHECK-NEXT: Block RThroughput: 2.022 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 1 1.00 sbbl %edx, %edx33# CHECK-NEXT: 1 1 1.00 sbbl %eax, %eax34 35# CHECK: Resources:36# CHECK-NEXT: [0] - JALU037# CHECK-NEXT: [1] - JALU138# CHECK-NEXT: [2] - JDiv39# CHECK-NEXT: [3] - JFPA40# CHECK-NEXT: [4] - JFPM41# CHECK-NEXT: [5] - JFPU042# CHECK-NEXT: [6] - JFPU143# CHECK-NEXT: [7] - JLAGU44# CHECK-NEXT: [8] - JMul45# CHECK-NEXT: [9] - JSAGU46# CHECK-NEXT: [10] - JSTC47# CHECK-NEXT: [11] - JVALU048# CHECK-NEXT: [12] - JVALU149# CHECK-NEXT: [13] - JVIMUL50 51# CHECK: Resource pressure per iteration:52# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13]53# CHECK-NEXT: 2.00 2.00 - - - - - - - - - - - -54 55# CHECK: Resource pressure by instruction:56# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] Instructions:57# CHECK-NEXT: - 2.00 - - - - - - - - - - - - sbbl %edx, %edx58# CHECK-NEXT: 2.00 - - - - - - - - - - - - - sbbl %eax, %eax59 60# CHECK: Timeline view:61# CHECK-NEXT: Index 01234567862 63# CHECK: [0,0] DeER . . sbbl %edx, %edx64# CHECK-NEXT: [0,1] D=eER. . sbbl %eax, %eax65# CHECK-NEXT: [1,0] .D=eER . sbbl %edx, %edx66# CHECK-NEXT: [1,1] .D==eER . sbbl %eax, %eax67# CHECK-NEXT: [2,0] . D==eER. sbbl %edx, %edx68# CHECK-NEXT: [2,1] . D===eER sbbl %eax, %eax69 70# CHECK: Average Wait times (based on the timeline view):71# CHECK-NEXT: [0]: Executions72# CHECK-NEXT: [1]: Average time spent waiting in a scheduler's queue73# CHECK-NEXT: [2]: Average time spent waiting in a scheduler's queue while ready74# CHECK-NEXT: [3]: Average time elapsed from WB until retire stage75 76# CHECK: [0] [1] [2] [3]77# CHECK-NEXT: 0. 3 2.0 0.3 0.0 sbbl %edx, %edx78# CHECK-NEXT: 1. 3 3.0 0.0 0.0 sbbl %eax, %eax79# CHECK-NEXT: 3 2.5 0.2 0.0 <total>80