1# RUN: llc -march=amdgcn -mcpu=gfx900 -run-pass=machine-scheduler -o - %s | FileCheck %s
2
3---
4# Check that the high latency loads are both scheduled first, before the
5# multiplies, despite the presence of a barrier in the function.
6# CHECK: BUFFER_LOAD_DWORD_OFFSET
7# CHECK: BUFFER_LOAD_DWORD_OFFSET
8# CHECK: V_MUL_LO_U32
9# CHECK: V_MUL_LO_U32
10name: test
11tracksRegLiveness: true
12body: |
13  bb.0:
14    liveins: $vgpr0, $vgpr1, $vgpr2, $vgpr3, $vgpr4, $vgpr5, $vgpr6, $vgpr7, $vgpr8, $vgpr9
15
16    undef %43.sub3:vreg_128 = COPY $vgpr9
17    undef %42.sub2:vreg_128 = COPY $vgpr8
18    undef %41.sub1:vreg_128 = COPY $vgpr7
19    undef %26.sub0:vreg_128 = COPY $vgpr6
20    undef %46.sub3:vreg_128 = COPY $vgpr5
21    undef %45.sub2:vreg_128 = COPY $vgpr4
22    undef %44.sub1:vreg_128 = COPY $vgpr3
23    undef %32.sub0:vreg_128 = COPY $vgpr2
24    undef %38.sub1:vreg_64 = COPY $vgpr1
25    %38.sub0:vreg_64 = COPY $vgpr0
26
27    S_BARRIER
28
29    undef %33.sub0:sgpr_128 = V_READFIRSTLANE_B32 %32.sub0, implicit $exec
30    %33.sub1:sgpr_128 = V_READFIRSTLANE_B32 %44.sub1, implicit $exec
31    %33.sub2:sgpr_128 = V_READFIRSTLANE_B32 %45.sub2, implicit $exec
32    %33.sub3:sgpr_128 = V_READFIRSTLANE_B32 %46.sub3, implicit $exec
33    %15:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %33, 0, 0, 0, 0, 0, 0, 0, implicit $exec
34    %39:vgpr_32 = V_MUL_LO_U32 %15, %15, implicit $exec
35
36    undef %27.sub0:sgpr_128 = V_READFIRSTLANE_B32 %26.sub0, implicit $exec
37    %27.sub1:sgpr_128 = V_READFIRSTLANE_B32 %41.sub1, implicit $exec
38    %27.sub2:sgpr_128 = V_READFIRSTLANE_B32 %42.sub2, implicit $exec
39    %27.sub3:sgpr_128 = V_READFIRSTLANE_B32 %43.sub3, implicit $exec
40    %19:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %27, 0, 0, 0, 0, 0, 0, 0, implicit $exec
41    %40:vgpr_32 = V_MUL_LO_U32 %19, %19, implicit $exec
42
43    %23:vgpr_32 = V_ADD_U32_e32 %39, %40, implicit $exec
44    GLOBAL_STORE_DWORD %38, %23, 0, 0, 0, 0, implicit $exec
45    S_ENDPGM 0
46...
47