| # NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py |
| # RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=btver2 -iterations=1500 -timeline -timeline-max-iterations=3 < %s | FileCheck %s |
| |
| # perf stat reports a throughput of 0.60 IPC for this code snippet. |
| |
| # The lzcnt cannot execute in parallel with the imul because there is a false |
| # dependency on %bx. |
| |
| imul %ax, %bx |
| lzcnt %ax, %bx |
| add %cx, %bx |
| |
| # CHECK: Iterations: 1500 |
| # CHECK-NEXT: Instructions: 4500 |
| # CHECK-NEXT: Total Cycles: 7503 |
| # CHECK-NEXT: Dispatch Width: 2 |
| # CHECK-NEXT: IPC: 0.60 |
| # CHECK-NEXT: Block RThroughput: 2.0 |
| |
| # 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: 2 3 1.00 imulw %ax, %bx |
| # CHECK-NEXT: 1 1 0.50 lzcntw %ax, %bx |
| # CHECK-NEXT: 1 1 0.50 addw %cx, %bx |
| |
| # CHECK: Resources: |
| # CHECK-NEXT: [0] - JALU0 |
| # CHECK-NEXT: [1] - JALU1 |
| # CHECK-NEXT: [2] - JDiv |
| # CHECK-NEXT: [3] - JFPA |
| # CHECK-NEXT: [4] - JFPM |
| # CHECK-NEXT: [5] - JFPU0 |
| # CHECK-NEXT: [6] - JFPU1 |
| # CHECK-NEXT: [7] - JLAGU |
| # CHECK-NEXT: [8] - JMul |
| # CHECK-NEXT: [9] - JSAGU |
| # CHECK-NEXT: [10] - JSTC |
| # CHECK-NEXT: [11] - JVALU0 |
| # CHECK-NEXT: [12] - JVALU1 |
| # CHECK-NEXT: [13] - JVIMUL |
| |
| # CHECK: Resource pressure per iteration: |
| # CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] |
| # CHECK-NEXT: 1.50 1.50 - - - - - - 1.00 - - - - - |
| |
| # CHECK: Resource pressure by instruction: |
| # CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] Instructions: |
| # CHECK-NEXT: - 1.00 - - - - - - 1.00 - - - - - imulw %ax, %bx |
| # CHECK-NEXT: 1.00 - - - - - - - - - - - - - lzcntw %ax, %bx |
| # CHECK-NEXT: 0.50 0.50 - - - - - - - - - - - - addw %cx, %bx |
| |
| # CHECK: Timeline view: |
| # CHECK-NEXT: 01234567 |
| # CHECK-NEXT: Index 0123456789 |
| |
| # CHECK: [0,0] DeeeER . . . imulw %ax, %bx |
| # CHECK-NEXT: [0,1] .D==eER . . . lzcntw %ax, %bx |
| # CHECK-NEXT: [0,2] .D===eER . . . addw %cx, %bx |
| # CHECK-NEXT: [1,0] . D===eeeER . . imulw %ax, %bx |
| # CHECK-NEXT: [1,1] . D=====eER . . lzcntw %ax, %bx |
| # CHECK-NEXT: [1,2] . D======eER . . addw %cx, %bx |
| # CHECK-NEXT: [2,0] . D======eeeER . imulw %ax, %bx |
| # CHECK-NEXT: [2,1] . D========eER. lzcntw %ax, %bx |
| # CHECK-NEXT: [2,2] . D=========eER addw %cx, %bx |
| |
| # 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 4.0 0.3 0.0 imulw %ax, %bx |
| # CHECK-NEXT: 1. 3 6.0 0.0 0.0 lzcntw %ax, %bx |
| # CHECK-NEXT: 2. 3 7.0 0.0 0.0 addw %cx, %bx |