1# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
2# RUN: llc -march=amdgcn -mcpu=gfx900 -run-pass=machine-scheduler -o - %s | FileCheck %s
3
4---
5# Check that the high latency loads are both scheduled first, before the
6# multiplies, despite the presence of a barrier in the function.
7name: test
8tracksRegLiveness: true
9body: |
10  bb.0:
11    liveins: $vgpr0, $vgpr1, $vgpr2, $vgpr3, $vgpr4, $vgpr5, $vgpr6, $vgpr7, $vgpr8, $vgpr9
12
13    ; CHECK-LABEL: name: test
14    ; CHECK: liveins: $vgpr0, $vgpr1, $vgpr2, $vgpr3, $vgpr4, $vgpr5, $vgpr6, $vgpr7, $vgpr8, $vgpr9
15    ; CHECK-NEXT: {{  $}}
16    ; CHECK-NEXT: undef %0.sub3:vreg_128 = COPY $vgpr9
17    ; CHECK-NEXT: undef %1.sub2:vreg_128 = COPY $vgpr8
18    ; CHECK-NEXT: undef %2.sub1:vreg_128 = COPY $vgpr7
19    ; CHECK-NEXT: undef %8.sub1:vreg_64 = COPY $vgpr1
20    ; CHECK-NEXT: %8.sub0:vreg_64 = COPY $vgpr0
21    ; CHECK-NEXT: undef %3.sub0:vreg_128 = COPY $vgpr6
22    ; CHECK-NEXT: undef %4.sub3:vreg_128 = COPY $vgpr5
23    ; CHECK-NEXT: undef %5.sub2:vreg_128 = COPY $vgpr4
24    ; CHECK-NEXT: undef %6.sub1:vreg_128 = COPY $vgpr3
25    ; CHECK-NEXT: undef %7.sub0:vreg_128 = COPY $vgpr2
26    ; CHECK-NEXT: undef %9.sub0:sgpr_128 = V_READFIRSTLANE_B32 %7.sub0, implicit $exec
27    ; CHECK-NEXT: %9.sub1:sgpr_128 = V_READFIRSTLANE_B32 %6.sub1, implicit $exec
28    ; CHECK-NEXT: %9.sub2:sgpr_128 = V_READFIRSTLANE_B32 %5.sub2, implicit $exec
29    ; CHECK-NEXT: %9.sub3:sgpr_128 = V_READFIRSTLANE_B32 %4.sub3, implicit $exec
30    ; CHECK-NEXT: S_BARRIER
31    ; CHECK-NEXT: [[BUFFER_LOAD_DWORD_OFFSET:%[0-9]+]]:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %9, 0, 0, 0, 0, 0, implicit $exec
32    ; CHECK-NEXT: undef %12.sub0:sgpr_128 = V_READFIRSTLANE_B32 %3.sub0, implicit $exec
33    ; CHECK-NEXT: %12.sub1:sgpr_128 = V_READFIRSTLANE_B32 %2.sub1, implicit $exec
34    ; CHECK-NEXT: %12.sub2:sgpr_128 = V_READFIRSTLANE_B32 %1.sub2, implicit $exec
35    ; CHECK-NEXT: %12.sub3:sgpr_128 = V_READFIRSTLANE_B32 %0.sub3, implicit $exec
36    ; CHECK-NEXT: [[BUFFER_LOAD_DWORD_OFFSET1:%[0-9]+]]:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %12, 0, 0, 0, 0, 0, implicit $exec
37    ; CHECK-NEXT: [[V_MUL_LO_U32_e64_:%[0-9]+]]:vgpr_32 = V_MUL_LO_U32_e64 [[BUFFER_LOAD_DWORD_OFFSET]], [[BUFFER_LOAD_DWORD_OFFSET]], implicit $exec
38    ; CHECK-NEXT: [[V_MUL_LO_U32_e64_1:%[0-9]+]]:vgpr_32 = V_MUL_LO_U32_e64 [[BUFFER_LOAD_DWORD_OFFSET1]], [[BUFFER_LOAD_DWORD_OFFSET1]], implicit $exec
39    ; CHECK-NEXT: [[V_ADD_U32_e32_:%[0-9]+]]:vgpr_32 = V_ADD_U32_e32 [[V_MUL_LO_U32_e64_]], [[V_MUL_LO_U32_e64_1]], implicit $exec
40    ; CHECK-NEXT: GLOBAL_STORE_DWORD %8, [[V_ADD_U32_e32_]], 0, 0, implicit $exec
41    ; CHECK-NEXT: S_ENDPGM 0
42    undef %43.sub3:vreg_128 = COPY $vgpr9
43    undef %42.sub2:vreg_128 = COPY $vgpr8
44    undef %41.sub1:vreg_128 = COPY $vgpr7
45    undef %26.sub0:vreg_128 = COPY $vgpr6
46    undef %46.sub3:vreg_128 = COPY $vgpr5
47    undef %45.sub2:vreg_128 = COPY $vgpr4
48    undef %44.sub1:vreg_128 = COPY $vgpr3
49    undef %32.sub0:vreg_128 = COPY $vgpr2
50    undef %38.sub1:vreg_64 = COPY $vgpr1
51    %38.sub0:vreg_64 = COPY $vgpr0
52
53    S_BARRIER
54
55    undef %33.sub0:sgpr_128 = V_READFIRSTLANE_B32 %32.sub0, implicit $exec
56    %33.sub1:sgpr_128 = V_READFIRSTLANE_B32 %44.sub1, implicit $exec
57    %33.sub2:sgpr_128 = V_READFIRSTLANE_B32 %45.sub2, implicit $exec
58    %33.sub3:sgpr_128 = V_READFIRSTLANE_B32 %46.sub3, implicit $exec
59    %15:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %33, 0, 0, 0, 0, 0, implicit $exec
60    %39:vgpr_32 = V_MUL_LO_U32_e64 %15, %15, implicit $exec
61
62    undef %27.sub0:sgpr_128 = V_READFIRSTLANE_B32 %26.sub0, implicit $exec
63    %27.sub1:sgpr_128 = V_READFIRSTLANE_B32 %41.sub1, implicit $exec
64    %27.sub2:sgpr_128 = V_READFIRSTLANE_B32 %42.sub2, implicit $exec
65    %27.sub3:sgpr_128 = V_READFIRSTLANE_B32 %43.sub3, implicit $exec
66    %19:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %27, 0, 0, 0, 0, 0, implicit $exec
67    %40:vgpr_32 = V_MUL_LO_U32_e64 %19, %19, implicit $exec
68
69    %23:vgpr_32 = V_ADD_U32_e32 %39, %40, implicit $exec
70    GLOBAL_STORE_DWORD %38, %23, 0, 0, implicit $exec
71    S_ENDPGM 0
72...
73