partial-reg-update-3.s
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# NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py
# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=x86-64 -iterations=1500 -timeline -timeline-max-iterations=3 < %s | FileCheck %s
# The ILP is limited by the false dependency on %dx. So, the mov cannot execute
# in parallel with the add.
add %cx, %dx
mov %ax, %dx
xor %bx, %dx
# CHECK: Iterations: 1500
# CHECK-NEXT: Instructions: 4500
# CHECK-NEXT: Total Cycles: 1504
# CHECK-NEXT: Total uOps: 4500
# CHECK: Dispatch Width: 4
# CHECK-NEXT: uOps Per Cycle: 2.99
# CHECK-NEXT: IPC: 2.99
# CHECK-NEXT: Block RThroughput: 1.0
# CHECK: Instruction Info:
# CHECK-NEXT: [1]: #uOps
# CHECK-NEXT: [2]: Latency
# CHECK-NEXT: [3]: RThroughput
# CHECK-NEXT: [4]: MayLoad
# CHECK-NEXT: [5]: MayStore
# CHECK-NEXT: [6]: HasSideEffects (U)
# CHECK: [1] [2] [3] [4] [5] [6] Instructions:
# CHECK-NEXT: 1 1 0.33 addw %cx, %dx
# CHECK-NEXT: 1 1 0.33 movw %ax, %dx
# CHECK-NEXT: 1 1 0.33 xorw %bx, %dx
# CHECK: Resources:
# CHECK-NEXT: [0] - SBDivider
# CHECK-NEXT: [1] - SBFPDivider
# CHECK-NEXT: [2] - SBPort0
# CHECK-NEXT: [3] - SBPort1
# CHECK-NEXT: [4] - SBPort4
# CHECK-NEXT: [5] - SBPort5
# CHECK-NEXT: [6.0] - SBPort23
# CHECK-NEXT: [6.1] - SBPort23
# CHECK: Resource pressure per iteration:
# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6.0] [6.1]
# CHECK-NEXT: - - 1.00 1.00 - 1.00 - -
# CHECK: Resource pressure by instruction:
# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6.0] [6.1] Instructions:
# CHECK-NEXT: - - 0.67 - - 0.33 - - addw %cx, %dx
# CHECK-NEXT: - - - 0.67 - 0.33 - - movw %ax, %dx
# CHECK-NEXT: - - 0.33 0.33 - 0.33 - - xorw %bx, %dx
# CHECK: Timeline view:
# CHECK-NEXT: Index 0123456
# CHECK: [0,0] DeER .. addw %cx, %dx
# CHECK-NEXT: [0,1] DeER .. movw %ax, %dx
# CHECK-NEXT: [0,2] D=eER.. xorw %bx, %dx
# CHECK-NEXT: [1,0] D==eER. addw %cx, %dx
# CHECK-NEXT: [1,1] .DeE-R. movw %ax, %dx
# CHECK-NEXT: [1,2] .D=eER. xorw %bx, %dx
# CHECK-NEXT: [2,0] .D==eER addw %cx, %dx
# CHECK-NEXT: [2,1] .DeE--R movw %ax, %dx
# CHECK-NEXT: [2,2] . DeE-R xorw %bx, %dx
# CHECK: Average Wait times (based on the timeline view):
# CHECK-NEXT: [0]: Executions
# CHECK-NEXT: [1]: Average time spent waiting in a scheduler's queue
# CHECK-NEXT: [2]: Average time spent waiting in a scheduler's queue while ready
# CHECK-NEXT: [3]: Average time elapsed from WB until retire stage
# CHECK: [0] [1] [2] [3]
# CHECK-NEXT: 0. 3 2.3 0.3 0.0 addw %cx, %dx
# CHECK-NEXT: 1. 3 1.0 1.0 1.0 movw %ax, %dx
# CHECK-NEXT: 2. 3 1.7 0.0 0.3 xorw %bx, %dx
# CHECK-NEXT: 3 1.7 0.4 0.4 <total>