src/llvm-project/llvm/test/CodeGen/AMDGPU/lower-control-flow-live-variables-update.xfail.mir

# RUN: not --crash llc -mtriple=amdgcn-amd-amdhsa -start-before=livevars -stop-after=twoaddressinstruction -verify-machineinstrs -o - %s 2>&1  | FileCheck %s

# CHECK: *** Bad machine code: LiveVariables: Block missing from AliveBlocks ***
# CHECK-NEXT: function:    live_variables_update_block_split_split_def_before_si_end_cf_live_out
# CHECK-NEXT: basic block: %bb.4
# CHECK-NEXT: Virtual register %8 must be live through the block.


# Same as
# live_variables_update_block_split_split_killed_def_before_si_end_cf,
# except the def before si_end_cf is live out of the block
---
name:            live_variables_update_block_split_split_def_before_si_end_cf_live_out
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $vgpr0

    %0:vgpr_32 = COPY killed $vgpr0
    %1:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
    %2:sreg_64_xexec = V_CMP_EQ_U32_e64 0, killed %0, implicit $exec
    %3:sreg_64_xexec = SI_IF %2, %bb.1, implicit-def $exec, implicit-def dead $scc, implicit $exec
    S_BRANCH %bb.3

  bb.1:
    %4:sreg_64_xexec = PHI %5, %bb.3, %3, %bb.0
    %6:vgpr_32 = PHI %7, %bb.3, %1, %bb.0
    %8:sreg_64 = S_MOV_B64 1
    SI_END_CF killed %4, implicit-def $exec, implicit-def dead $scc, implicit $exec
    %9:vgpr_32 = nsw V_ADD_U32_e32 1, killed %6, implicit $exec

  bb.2:
    S_NOP 0, implicit killed %8

  bb.3:
    %10:vgpr_32 = PHI %9, %bb.2, %7, %bb.3, %1, %bb.0
    GLOBAL_STORE_DWORD undef %11:vreg_64, %10, 0, 0, implicit $exec :: (volatile store (s32), addrspace 1)
    %7:vgpr_32 = COPY killed %10
    %5:sreg_64_xexec = SI_IF %2, %bb.1, implicit-def $exec, implicit-def dead $scc, implicit $exec
    S_BRANCH %bb.3

...