| # 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. |
| # Each lzcnt has a false dependency on %ecx; the first lzcnt has to wait on the |
| # imul. However, the folded load can start immediately. |
| # The last lzcnt has a false dependency on %cx. However, even in this case, the |
| # folded load can start immediately. |
| |
| imul %edx, %ecx |
| lzcnt (%rsp), %cx |
| lzcnt 2(%rsp), %cx |
| |
| # CHECK: Iterations: 1500 |
| # CHECK-NEXT: Instructions: 4500 |
| # CHECK-NEXT: Total Cycles: 7504 |
| # CHECK-NEXT: Total uOps: 6000 |
| |
| # CHECK: Dispatch Width: 2 |
| # CHECK-NEXT: uOps Per Cycle: 0.80 |
| # 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 imull %edx, %ecx |
| # CHECK-NEXT: 1 4 1.00 * lzcntw (%rsp), %cx |
| # CHECK-NEXT: 1 4 1.00 * lzcntw 2(%rsp), %cx |
| |
| # 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 - - - - - 2.00 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 - - - - - imull %edx, %ecx |
| # CHECK-NEXT: 1.00 - - - - - - 1.00 - - - - - - lzcntw (%rsp), %cx |
| # CHECK-NEXT: 0.50 0.50 - - - - - 1.00 - - - - - - lzcntw 2(%rsp), %cx |
| |
| # CHECK: Timeline view: |
| # CHECK-NEXT: 012345678 |
| # CHECK-NEXT: Index 0123456789 |
| |
| # CHECK: [0,0] DeeeER . . . imull %edx, %ecx |
| # CHECK-NEXT: [0,1] .DeeeeER . . . lzcntw (%rsp), %cx |
| # CHECK-NEXT: [0,2] .D=eeeeER . . . lzcntw 2(%rsp), %cx |
| # CHECK-NEXT: [1,0] . D====eeeER . . imull %edx, %ecx |
| # CHECK-NEXT: [1,1] . D===eeeeER . . lzcntw (%rsp), %cx |
| # CHECK-NEXT: [1,2] . D====eeeeER . . lzcntw 2(%rsp), %cx |
| # CHECK-NEXT: [2,0] . D=======eeeER . imull %edx, %ecx |
| # CHECK-NEXT: [2,1] . D======eeeeER. lzcntw (%rsp), %cx |
| # CHECK-NEXT: [2,2] . D=======eeeeER lzcntw 2(%rsp), %cx |
| |
| # 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 4.7 0.3 0.0 imull %edx, %ecx |
| # CHECK-NEXT: 1. 3 4.0 0.3 0.0 lzcntw (%rsp), %cx |
| # CHECK-NEXT: 2. 3 5.0 0.0 0.0 lzcntw 2(%rsp), %cx |
