# NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py # RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=btver2 -timeline -timeline-max-iterations=3 -iterations=1500 < %s | FileCheck %s # perf stat reports an IPC of 1.00 for this code block. # Although both SBB are dependency breaking instructions, there is still an # implicit dependency on EFLAGS which limits the ILP. So, the hardware backend # can only execute one instruction per cycle. sbb %edx, %edx sbb %eax, %eax # CHECK: Iterations: 1500 # CHECK-NEXT: Instructions: 3000 # CHECK-NEXT: Total Cycles: 3003 # CHECK-NEXT: Total uOps: 3000 # CHECK: Dispatch Width: 2 # CHECK-NEXT: uOps Per Cycle: 1.00 # CHECK-NEXT: IPC: 1.00 # 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: 1 1 1.00 sbbl %edx, %edx # CHECK-NEXT: 1 1 1.00 sbbl %eax, %eax # 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: 2.00 2.00 - - - - - - - - - - - - # CHECK: Resource pressure by instruction: # CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] Instructions: # CHECK-NEXT: - 2.00 - - - - - - - - - - - - sbbl %edx, %edx # CHECK-NEXT: 2.00 - - - - - - - - - - - - - sbbl %eax, %eax # CHECK: Timeline view: # CHECK-NEXT: Index 012345678 # CHECK: [0,0] DeER . . sbbl %edx, %edx # CHECK-NEXT: [0,1] D=eER. . sbbl %eax, %eax # CHECK-NEXT: [1,0] .D=eER . sbbl %edx, %edx # CHECK-NEXT: [1,1] .D==eER . sbbl %eax, %eax # CHECK-NEXT: [2,0] . D==eER. sbbl %edx, %edx # CHECK-NEXT: [2,1] . D===eER sbbl %eax, %eax # 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 2.0 0.3 0.0 sbbl %edx, %edx # CHECK-NEXT: 1. 3 3.0 0.0 0.0 sbbl %eax, %eax # CHECK-NEXT: 3 2.5 0.2 0.0