1# RUN: llc -mtriple amdgcn -run-pass livevars -run-pass phi-node-elimination -verify-machineinstrs -o - %s | FileCheck %s
2
3# CHECK-LABEL:  phi-cf-test
4# CHECK: bb.0:
5# CHECK:     [[COND:%[0-9]+]]:sreg_64 = V_CMP_EQ_U32_e64
6# CHECK:     [[IF_SOURCE0:%[0-9]+]]:sreg_64 = SI_IF [[COND]], %bb.1, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
7# CHECK:     [[IF_INPUT_REG:%[0-9]+]]:sreg_64 = S_MOV_B64_term killed [[IF_SOURCE0]], implicit $exec
8
9# CHECK: bb.1:
10# CHECK:     [[END_CF_ARG:%[0-9]+]]:sreg_64 = COPY killed [[IF_INPUT_REG]]
11# CHECK:     SI_END_CF killed [[END_CF_ARG]], implicit-def dead $exec, implicit-def dead $scc, implicit $exec
12
13# CHECK: bb.2:
14# CHECK:     [[IF_SOURCE1:%[0-9]+]]:sreg_64 = SI_IF [[COND]], %bb.1, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
15# CHECK:     [[IF_INPUT_REG]]:sreg_64 = S_MOV_B64_term killed [[IF_SOURCE1]], implicit $exec
16
17
18...
19---
20name:            phi-cf-test
21tracksRegLiveness: true
22body:             |
23
24  bb.0:
25    successors: %bb.3(0x40000000), %bb.2(0x40000000)
26    liveins: $vgpr0
27
28    %5:vgpr_32(s32) = COPY $vgpr0
29    %0:sreg_64 = V_CMP_EQ_U32_e64 0, %5(s32), implicit $exec
30    %18:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
31    %22:sreg_64 = SI_IF %0, %bb.2, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
32    S_BRANCH %bb.3
33
34  bb.2:
35    successors: %bb.3(0x80000000)
36
37    %24:sreg_64 = PHI %20, %bb.3, %22, %bb.0
38    %23:vgpr_32 = PHI %19, %bb.3, %18, %bb.0
39    SI_END_CF %24, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
40    %3:vgpr_32, dead %10:sreg_64 = nsw V_ADD_CO_U32_e64 1, %23, 0, implicit $exec
41
42  bb.3:
43    successors: %bb.3(0x40000000), %bb.2(0x40000000)
44
45    %4:vgpr_32 = PHI %19, %bb.3, %3, %bb.2, %18, %bb.0
46    %15:sreg_32_xm0 = S_MOV_B32 61440
47    %16:sreg_32_xm0 = S_MOV_B32 -1
48    %17:sgpr_128 = REG_SEQUENCE undef %14:sreg_32_xm0, %subreg.sub0, undef %12:sreg_32_xm0, %subreg.sub1, %16, %subreg.sub2, %15, %subreg.sub3
49    BUFFER_STORE_DWORD_OFFSET %4, %17, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (volatile store 4 into `i32 addrspace(1)* undef`, addrspace 1)
50    %19:vgpr_32 = COPY %4
51    %20:sreg_64 = SI_IF %0, %bb.2, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
52    S_BRANCH %bb.3
53
54...
55