| # NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py |
| # RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=bdver2 -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: 12003 |
| # CHECK-NEXT: Total uOps: 7500 |
| |
| # CHECK: Dispatch Width: 4 |
| # CHECK-NEXT: uOps Per Cycle: 0.62 |
| # CHECK-NEXT: IPC: 0.37 |
| # CHECK-NEXT: Block RThroughput: 4.0 |
| |
| # 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 4 2.00 imull %edx, %ecx |
| # CHECK-NEXT: 2 6 2.00 * lzcntw (%rsp), %cx |
| # CHECK-NEXT: 2 6 2.00 * lzcntw 2(%rsp), %cx |
| |
| # CHECK: Resources: |
| # CHECK-NEXT: [0.0] - PdAGLU01 |
| # CHECK-NEXT: [0.1] - PdAGLU01 |
| # CHECK-NEXT: [1] - PdBranch |
| # CHECK-NEXT: [2] - PdCount |
| # CHECK-NEXT: [3] - PdDiv |
| # CHECK-NEXT: [4] - PdEX0 |
| # CHECK-NEXT: [5] - PdEX1 |
| # CHECK-NEXT: [6] - PdFPCVT |
| # CHECK-NEXT: [7.0] - PdFPFMA |
| # CHECK-NEXT: [7.1] - PdFPFMA |
| # CHECK-NEXT: [8.0] - PdFPMAL |
| # CHECK-NEXT: [8.1] - PdFPMAL |
| # CHECK-NEXT: [9] - PdFPMMA |
| # CHECK-NEXT: [10] - PdFPSTO |
| # CHECK-NEXT: [11] - PdFPU0 |
| # CHECK-NEXT: [12] - PdFPU1 |
| # CHECK-NEXT: [13] - PdFPU2 |
| # CHECK-NEXT: [14] - PdFPU3 |
| # CHECK-NEXT: [15] - PdFPXBR |
| # CHECK-NEXT: [16.0] - PdLoad |
| # CHECK-NEXT: [16.1] - PdLoad |
| # CHECK-NEXT: [17] - PdMul |
| # CHECK-NEXT: [18] - PdStore |
| |
| # CHECK: Resource pressure per iteration: |
| # CHECK-NEXT: [0.0] [0.1] [1] [2] [3] [4] [5] [6] [7.0] [7.1] [8.0] [8.1] [9] [10] [11] [12] [13] [14] [15] [16.0] [16.1] [17] [18] |
| # CHECK-NEXT: 3.00 3.00 - - - 4.00 1.00 - - - - - - - - - - - - 3.00 3.00 2.00 - |
| |
| # CHECK: Resource pressure by instruction: |
| # CHECK-NEXT: [0.0] [0.1] [1] [2] [3] [4] [5] [6] [7.0] [7.1] [8.0] [8.1] [9] [10] [11] [12] [13] [14] [15] [16.0] [16.1] [17] [18] Instructions: |
| # CHECK-NEXT: - - - - - - 1.00 - - - - - - - - - - - - - - 2.00 - imull %edx, %ecx |
| # CHECK-NEXT: - 3.00 - - - 2.00 - - - - - - - - - - - - - - 3.00 - - lzcntw (%rsp), %cx |
| # CHECK-NEXT: 3.00 - - - - 2.00 - - - - - - - - - - - - - 3.00 - - - lzcntw 2(%rsp), %cx |
| |
| # CHECK: Timeline view: |
| # CHECK-NEXT: 0123456789 |
| # CHECK-NEXT: Index 0123456789 0123456 |
| |
| # CHECK: [0,0] DeeeeER . . . .. imull %edx, %ecx |
| # CHECK-NEXT: [0,1] DeeeeeeER . . . .. lzcntw (%rsp), %cx |
| # CHECK-NEXT: [0,2] .D=eeeeeeER . . .. lzcntw 2(%rsp), %cx |
| # CHECK-NEXT: [1,0] .D=======eeeeER. . .. imull %edx, %ecx |
| # CHECK-NEXT: [1,1] . D======eeeeeeER . .. lzcntw (%rsp), %cx |
| # CHECK-NEXT: [1,2] . D========eeeeeeER . .. lzcntw 2(%rsp), %cx |
| # CHECK-NEXT: [2,0] . D=============eeeeER .. imull %edx, %ecx |
| # CHECK-NEXT: [2,1] . D=============eeeeeeER.. lzcntw (%rsp), %cx |
| # CHECK-NEXT: [2,2] . D==============eeeeeeER 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 7.7 0.3 0.0 imull %edx, %ecx |
| # CHECK-NEXT: 1. 3 7.3 0.0 0.0 lzcntw (%rsp), %cx |
| # CHECK-NEXT: 2. 3 8.7 1.0 0.0 lzcntw 2(%rsp), %cx |
| # CHECK-NEXT: 3 7.9 0.4 0.0 <total> |
