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 0.60 IPC for this code snippet. 5# Each lzcnt has a false dependency on %ecx; the first lzcnt has to wait on the 6# imul. However, the folded load can start immediately. 7# The last lzcnt has a false dependency on %cx. However, even in this case, the 8# folded load can start immediately. 9 10imul %edx, %ecx 11lzcnt (%rsp), %cx 12lzcnt 2(%rsp), %cx 13 14# CHECK: Iterations: 1500 15# CHECK-NEXT: Instructions: 4500 16# CHECK-NEXT: Total Cycles: 7504 17# CHECK-NEXT: Dispatch Width: 2 18# CHECK-NEXT: IPC: 0.60 19# CHECK-NEXT: Block RThroughput: 2.0 20 21# CHECK: Instruction Info: 22# CHECK-NEXT: [1]: #uOps 23# CHECK-NEXT: [2]: Latency 24# CHECK-NEXT: [3]: RThroughput 25# CHECK-NEXT: [4]: MayLoad 26# CHECK-NEXT: [5]: MayStore 27# CHECK-NEXT: [6]: HasSideEffects (U) 28 29# CHECK: [1] [2] [3] [4] [5] [6] Instructions: 30# CHECK-NEXT: 2 3 1.00 imull %edx, %ecx 31# CHECK-NEXT: 1 4 1.00 * lzcntw (%rsp), %cx 32# CHECK-NEXT: 1 4 1.00 * lzcntw 2(%rsp), %cx 33 34# CHECK: Resources: 35# CHECK-NEXT: [0] - JALU0 36# CHECK-NEXT: [1] - JALU1 37# CHECK-NEXT: [2] - JDiv 38# CHECK-NEXT: [3] - JFPA 39# CHECK-NEXT: [4] - JFPM 40# CHECK-NEXT: [5] - JFPU0 41# CHECK-NEXT: [6] - JFPU1 42# CHECK-NEXT: [7] - JLAGU 43# CHECK-NEXT: [8] - JMul 44# CHECK-NEXT: [9] - JSAGU 45# CHECK-NEXT: [10] - JSTC 46# CHECK-NEXT: [11] - JVALU0 47# CHECK-NEXT: [12] - JVALU1 48# CHECK-NEXT: [13] - JVIMUL 49 50# CHECK: Resource pressure per iteration: 51# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] 52# CHECK-NEXT: 1.50 1.50 - - - - - 2.00 1.00 - - - - - 53 54# CHECK: Resource pressure by instruction: 55# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] Instructions: 56# CHECK-NEXT: - 1.00 - - - - - - 1.00 - - - - - imull %edx, %ecx 57# CHECK-NEXT: 1.00 - - - - - - 1.00 - - - - - - lzcntw (%rsp), %cx 58# CHECK-NEXT: 0.50 0.50 - - - - - 1.00 - - - - - - lzcntw 2(%rsp), %cx 59 60# CHECK: Timeline view: 61# CHECK-NEXT: 012345678 62# CHECK-NEXT: Index 0123456789 63 64# CHECK: [0,0] DeeeER . . . imull %edx, %ecx 65# CHECK-NEXT: [0,1] .DeeeeER . . . lzcntw (%rsp), %cx 66# CHECK-NEXT: [0,2] .D=eeeeER . . . lzcntw 2(%rsp), %cx 67# CHECK-NEXT: [1,0] . D====eeeER . . imull %edx, %ecx 68# CHECK-NEXT: [1,1] . D===eeeeER . . lzcntw (%rsp), %cx 69# CHECK-NEXT: [1,2] . D====eeeeER . . lzcntw 2(%rsp), %cx 70# CHECK-NEXT: [2,0] . D=======eeeER . imull %edx, %ecx 71# CHECK-NEXT: [2,1] . D======eeeeER. lzcntw (%rsp), %cx 72# CHECK-NEXT: [2,2] . D=======eeeeER lzcntw 2(%rsp), %cx 73 74# CHECK: Average Wait times (based on the timeline view): 75# CHECK-NEXT: [0]: Executions 76# CHECK-NEXT: [1]: Average time spent waiting in a scheduler's queue 77# CHECK-NEXT: [2]: Average time spent waiting in a scheduler's queue while ready 78# CHECK-NEXT: [3]: Average time elapsed from WB until retire stage 79 80# CHECK: [0] [1] [2] [3] 81# CHECK-NEXT: 0. 3 4.7 0.3 0.0 imull %edx, %ecx 82# CHECK-NEXT: 1. 3 4.0 0.3 0.0 lzcntw (%rsp), %cx 83# CHECK-NEXT: 2. 3 5.0 0.0 0.0 lzcntw 2(%rsp), %cx 84