88 lines
3.9 KiB
ArmAsm
88 lines
3.9 KiB
ArmAsm
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# NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py
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# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=btver2 -iterations=1500 -timeline -timeline-max-iterations=3 < %s | FileCheck %s
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# perf stat reports a throughput of 0.60 IPC for this code snippet.
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# Each lzcnt has a false dependency on %ecx; the first lzcnt has to wait on the
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# imul. However, the folded load can start immediately.
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# The last lzcnt has a false dependency on %cx. However, even in this case, the
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# folded load can start immediately.
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imul %edx, %ecx
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lzcnt (%rsp), %cx
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lzcnt 2(%rsp), %cx
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# CHECK: Iterations: 1500
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# CHECK-NEXT: Instructions: 4500
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# CHECK-NEXT: Total Cycles: 7503
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# CHECK-NEXT: Total uOps: 4500
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# CHECK: Dispatch Width: 2
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# CHECK-NEXT: uOps Per Cycle: 0.60
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# CHECK-NEXT: IPC: 0.60
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# CHECK-NEXT: Block RThroughput: 2.0
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# CHECK: Instruction Info:
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# CHECK-NEXT: [1]: #uOps
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# CHECK-NEXT: [2]: Latency
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# CHECK-NEXT: [3]: RThroughput
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# CHECK-NEXT: [4]: MayLoad
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# CHECK-NEXT: [5]: MayStore
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# CHECK-NEXT: [6]: HasSideEffects (U)
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# CHECK: [1] [2] [3] [4] [5] [6] Instructions:
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# CHECK-NEXT: 1 3 1.00 imull %edx, %ecx
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# CHECK-NEXT: 1 4 1.00 * lzcntw (%rsp), %cx
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# CHECK-NEXT: 1 4 1.00 * lzcntw 2(%rsp), %cx
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# CHECK: Resources:
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# CHECK-NEXT: [0] - JALU0
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# CHECK-NEXT: [1] - JALU1
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# CHECK-NEXT: [2] - JDiv
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# CHECK-NEXT: [3] - JFPA
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# CHECK-NEXT: [4] - JFPM
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# CHECK-NEXT: [5] - JFPU0
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# CHECK-NEXT: [6] - JFPU1
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# CHECK-NEXT: [7] - JLAGU
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# CHECK-NEXT: [8] - JMul
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# CHECK-NEXT: [9] - JSAGU
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# CHECK-NEXT: [10] - JSTC
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# CHECK-NEXT: [11] - JVALU0
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# CHECK-NEXT: [12] - JVALU1
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# CHECK-NEXT: [13] - JVIMUL
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# CHECK: Resource pressure per iteration:
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# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13]
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# CHECK-NEXT: 1.50 1.50 - - - - - 2.00 1.00 - - - - -
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# CHECK: Resource pressure by instruction:
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# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] Instructions:
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# CHECK-NEXT: - 1.00 - - - - - - 1.00 - - - - - imull %edx, %ecx
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# CHECK-NEXT: 1.00 - - - - - - 1.00 - - - - - - lzcntw (%rsp), %cx
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# CHECK-NEXT: 0.50 0.50 - - - - - 1.00 - - - - - - lzcntw 2(%rsp), %cx
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# CHECK: Timeline view:
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# CHECK-NEXT: 01234567
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# CHECK-NEXT: Index 0123456789
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# CHECK: [0,0] DeeeER . . . imull %edx, %ecx
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# CHECK-NEXT: [0,1] DeeeeER . . . lzcntw (%rsp), %cx
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# CHECK-NEXT: [0,2] .DeeeeER . . . lzcntw 2(%rsp), %cx
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# CHECK-NEXT: [1,0] .D====eeeER . . imull %edx, %ecx
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# CHECK-NEXT: [1,1] . D===eeeeER . . lzcntw (%rsp), %cx
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# CHECK-NEXT: [1,2] . D====eeeeER . . lzcntw 2(%rsp), %cx
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# CHECK-NEXT: [2,0] . D=======eeeER . imull %edx, %ecx
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# CHECK-NEXT: [2,1] . D=======eeeeER. lzcntw (%rsp), %cx
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# CHECK-NEXT: [2,2] . D=======eeeeER lzcntw 2(%rsp), %cx
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# CHECK: Average Wait times (based on the timeline view):
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# CHECK-NEXT: [0]: Executions
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# CHECK-NEXT: [1]: Average time spent waiting in a scheduler's queue
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# CHECK-NEXT: [2]: Average time spent waiting in a scheduler's queue while ready
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# CHECK-NEXT: [3]: Average time elapsed from WB until retire stage
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# CHECK: [0] [1] [2] [3]
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# CHECK-NEXT: 0. 3 4.7 0.3 0.0 imull %edx, %ecx
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# CHECK-NEXT: 1. 3 4.3 0.0 0.0 lzcntw (%rsp), %cx
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# CHECK-NEXT: 2. 3 4.7 0.0 0.0 lzcntw 2(%rsp), %cx
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# CHECK-NEXT: 3 4.6 0.1 0.0 <total>
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