1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
| # NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py
# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=x86-64 -timeline -timeline-max-iterations=3 -iterations=1500 < %s | FileCheck %s
# 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: 6003
# CHECK-NEXT: Total uOps: 6000
# CHECK: Dispatch Width: 4
# CHECK-NEXT: uOps Per Cycle: 1.00
# CHECK-NEXT: IPC: 0.50
# 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: 2 2 0.67 sbbl %edx, %edx
# CHECK-NEXT: 2 2 0.67 sbbl %eax, %eax
# 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: - - 1.33 1.33 - 1.33 - -
# CHECK: Resource pressure by instruction:
# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6.0] [6.1] Instructions:
# CHECK-NEXT: - - 0.67 0.67 - 0.67 - - sbbl %edx, %edx
# CHECK-NEXT: - - 0.67 0.67 - 0.67 - - sbbl %eax, %eax
# CHECK: Timeline view:
# CHECK-NEXT: 01234
# CHECK-NEXT: Index 0123456789
# CHECK: [0,0] DeeER. . . sbbl %edx, %edx
# CHECK-NEXT: [0,1] D==eeER . . sbbl %eax, %eax
# CHECK-NEXT: [1,0] .D===eeER . . sbbl %edx, %edx
# CHECK-NEXT: [1,1] .D=====eeER . sbbl %eax, %eax
# CHECK-NEXT: [2,0] . D======eeER . sbbl %edx, %edx
# CHECK-NEXT: [2,1] . D========eeER 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 4.0 0.3 0.0 sbbl %edx, %edx
# CHECK-NEXT: 1. 3 6.0 0.0 0.0 sbbl %eax, %eax
# CHECK-NEXT: 3 5.0 0.2 0.0 <total>
|