# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 2
# RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 \
# RUN:   -start-before=greedy,0 -stop-after=virtregrewriter,1 -verify-regalloc -o - %s | FileCheck %s

# This hit an assert when identifying snippet copy bundles from
# running off the end of the block due to using
# MachineBasicBlock::iterator instead of
# MachineBasicBlock::instr_iterator.

--- |

  define amdgpu_kernel void @kernel() #0 {
  bb:
    ret void
  }

  attributes #0 = { "amdgpu-calls" "amdgpu-waves-per-eu"="10,10" "target-cpu"="gfx900" }

...
---
name:            kernel
tracksRegLiveness: true
frameInfo:
  hasCalls:        true
machineFunctionInfo:
  isEntryFunction: true
  scratchRSrcReg:  '$sgpr0_sgpr1_sgpr2_sgpr3'
  stackPtrOffsetReg: '$sgpr32'
  occupancy:       8
body:             |
  ; CHECK-LABEL: name: kernel
  ; CHECK: bb.0:
  ; CHECK-NEXT:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
  ; CHECK-NEXT:   liveins: $sgpr14, $sgpr15, $sgpr16, $vgpr0, $vgpr1, $vgpr2, $sgpr4_sgpr5, $sgpr6_sgpr7, $sgpr8_sgpr9, $sgpr10_sgpr11
  ; CHECK-NEXT: {{  $}}
  ; CHECK-NEXT:   renamable $sgpr34_sgpr35 = IMPLICIT_DEF
  ; CHECK-NEXT:   dead renamable $vgpr0 = IMPLICIT_DEF
  ; CHECK-NEXT:   renamable $sgpr41 = IMPLICIT_DEF
  ; CHECK-NEXT:   renamable $sgpr38_sgpr39 = COPY undef $sgpr8_sgpr9
  ; CHECK-NEXT:   renamable $sgpr36_sgpr37 = IMPLICIT_DEF
  ; CHECK-NEXT:   renamable $sgpr44_sgpr45_sgpr46_sgpr47_sgpr48_sgpr49_sgpr50_sgpr51 = S_LOAD_DWORDX8_IMM renamable $sgpr38_sgpr39, 0, 0 :: (dereferenceable invariant load (s256), align 16, addrspace 4)
  ; CHECK-NEXT:   dead renamable $sgpr4 = S_LOAD_DWORD_IMM renamable $sgpr38_sgpr39, 48, 0 :: (dereferenceable invariant load (s32), align 16, addrspace 4)
  ; CHECK-NEXT:   renamable $sgpr4_sgpr5_sgpr6_sgpr7_sgpr8_sgpr9_sgpr10_sgpr11 = S_LOAD_DWORDX8_IMM renamable $sgpr38_sgpr39, 56, 0 :: (dereferenceable invariant load (s256), align 8, addrspace 4)
  ; CHECK-NEXT:   SI_SPILL_S256_SAVE killed renamable $sgpr4_sgpr5_sgpr6_sgpr7_sgpr8_sgpr9_sgpr10_sgpr11, %stack.0, implicit $exec, implicit $sgpr32 :: (store (s256) into %stack.0, align 4, addrspace 5)
  ; CHECK-NEXT:   dead renamable $sgpr4_sgpr5 = S_LOAD_DWORDX2_IMM renamable $sgpr44_sgpr45, 0, 0 :: (invariant load (s64), align 16, addrspace 4)
  ; CHECK-NEXT:   ADJCALLSTACKUP 0, 0, implicit-def dead $scc, implicit-def $sgpr32, implicit $sgpr32
  ; CHECK-NEXT:   $vgpr1 = COPY renamable $sgpr51
  ; CHECK-NEXT:   dead $sgpr30_sgpr31 = SI_CALL undef renamable $sgpr4_sgpr5, 0, csr_amdgpu, implicit undef $sgpr15, implicit $vgpr31, implicit $sgpr0_sgpr1_sgpr2_sgpr3
  ; CHECK-NEXT:   ADJCALLSTACKDOWN 0, 0, implicit-def dead $scc, implicit-def $sgpr32, implicit $sgpr32
  ; CHECK-NEXT:   $vcc = COPY renamable $sgpr40_sgpr41
  ; CHECK-NEXT:   S_CBRANCH_VCCZ %bb.2, implicit undef $vcc
  ; CHECK-NEXT: {{  $}}
  ; CHECK-NEXT: bb.1:
  ; CHECK-NEXT:   successors: %bb.3(0x80000000)
  ; CHECK-NEXT:   liveins: $sgpr34_sgpr35, $sgpr36_sgpr37, $sgpr38_sgpr39, $sgpr44_sgpr45_sgpr46_sgpr47_sgpr48_sgpr49_sgpr50_sgpr51:0x000000000000FC00
  ; CHECK-NEXT: {{  $}}
  ; CHECK-NEXT:   renamable $sgpr4_sgpr5_sgpr6_sgpr7_sgpr8_sgpr9_sgpr10_sgpr11 = SI_SPILL_S256_RESTORE %stack.0, implicit $exec, implicit $sgpr32 :: (load (s256) from %stack.0, align 4, addrspace 5)
  ; CHECK-NEXT:   S_BRANCH %bb.3
  ; CHECK-NEXT: {{  $}}
  ; CHECK-NEXT: bb.2:
  ; CHECK-NEXT:   successors: %bb.3(0x80000000)
  ; CHECK-NEXT:   liveins: $sgpr34_sgpr35, $sgpr36_sgpr37, $sgpr38_sgpr39, $sgpr44_sgpr45_sgpr46_sgpr47_sgpr48_sgpr49_sgpr50_sgpr51:0x000000000000FC00
  ; CHECK-NEXT: {{  $}}
  ; CHECK-NEXT:   renamable $sgpr4_sgpr5_sgpr6_sgpr7_sgpr8_sgpr9_sgpr10_sgpr11 = SI_SPILL_S256_RESTORE %stack.0, implicit $exec, implicit $sgpr32 :: (load (s256) from %stack.0, align 4, addrspace 5)
  ; CHECK-NEXT:   S_CMP_LG_U64 renamable $sgpr4_sgpr5, 0, implicit-def $scc
  ; CHECK-NEXT: {{  $}}
  ; CHECK-NEXT: bb.3:
  ; CHECK-NEXT:   successors: %bb.5(0x40000000), %bb.4(0x40000000)
  ; CHECK-NEXT:   liveins: $sgpr34_sgpr35, $sgpr36_sgpr37, $sgpr38_sgpr39, $sgpr4_sgpr5_sgpr6_sgpr7_sgpr8_sgpr9_sgpr10_sgpr11:0x00000000000003F0, $sgpr44_sgpr45_sgpr46_sgpr47_sgpr48_sgpr49_sgpr50_sgpr51:0x000000000000FC00
  ; CHECK-NEXT: {{  $}}
  ; CHECK-NEXT:   S_CBRANCH_VCCZ %bb.5, implicit undef $vcc
  ; CHECK-NEXT: {{  $}}
  ; CHECK-NEXT: bb.4:
  ; CHECK-NEXT:   successors: %bb.5(0x80000000)
  ; CHECK-NEXT:   liveins: $sgpr34_sgpr35, $sgpr36_sgpr37, $sgpr38_sgpr39, $sgpr4_sgpr5_sgpr6_sgpr7_sgpr8_sgpr9_sgpr10_sgpr11:0x00000000000003F0, $sgpr44_sgpr45_sgpr46_sgpr47_sgpr48_sgpr49_sgpr50_sgpr51:0x000000000000FC00
  ; CHECK-NEXT: {{  $}}
  ; CHECK-NEXT:   S_CMP_EQ_U32 renamable $sgpr8, 0, implicit-def $scc
  ; CHECK-NEXT: {{  $}}
  ; CHECK-NEXT: bb.5:
  ; CHECK-NEXT:   liveins: $sgpr34_sgpr35, $sgpr36_sgpr37, $sgpr38_sgpr39, $sgpr4_sgpr5_sgpr6_sgpr7_sgpr8_sgpr9_sgpr10_sgpr11:0x00000000000000F0, $sgpr44_sgpr45_sgpr46_sgpr47_sgpr48_sgpr49_sgpr50_sgpr51:0x000000000000FC00
  ; CHECK-NEXT: {{  $}}
  ; CHECK-NEXT:   dead renamable $sgpr4_sgpr5 = S_LOAD_DWORDX2_IMM killed renamable $sgpr38_sgpr39, 40, 0 :: (dereferenceable invariant load (s64), addrspace 4)
  ; CHECK-NEXT:   GLOBAL_STORE_DWORD_SADDR undef renamable $vgpr0, undef renamable $vgpr0, killed renamable $sgpr6_sgpr7, 0, 0, implicit $exec :: (store (s32), addrspace 1)
  ; CHECK-NEXT:   GLOBAL_STORE_DWORD_SADDR undef renamable $vgpr0, undef renamable $vgpr0, renamable $sgpr50_sgpr51, 0, 0, implicit $exec :: (store (s32), addrspace 1)
  ; CHECK-NEXT:   dead renamable $vgpr0 = COPY killed renamable $sgpr49
  ; CHECK-NEXT:   ADJCALLSTACKUP 0, 0, implicit-def dead $scc, implicit-def $sgpr32, implicit $sgpr32
  ; CHECK-NEXT:   $sgpr6_sgpr7 = COPY killed renamable $sgpr36_sgpr37
  ; CHECK-NEXT:   $sgpr10_sgpr11 = COPY killed renamable $sgpr34_sgpr35
  ; CHECK-NEXT:   ADJCALLSTACKDOWN 0, 0, implicit-def dead $scc, implicit-def $sgpr32, implicit $sgpr32
  ; CHECK-NEXT:   S_ENDPGM 0
  bb.0:
    liveins: $vgpr0, $vgpr1, $vgpr2, $sgpr4_sgpr5, $sgpr6_sgpr7, $sgpr8_sgpr9, $sgpr10_sgpr11, $sgpr14, $sgpr15, $sgpr16

    %0:sgpr_64 = IMPLICIT_DEF
    %1:vgpr_32 = IMPLICIT_DEF
    undef %2.sub1:sreg_64 = IMPLICIT_DEF
    %3:sgpr_64 = COPY undef $sgpr8_sgpr9
    %4:sgpr_64 = IMPLICIT_DEF
    %5:sgpr_256 = S_LOAD_DWORDX8_IMM %3, 0, 0 :: (dereferenceable invariant load (s256), align 16, addrspace 4)
    %6:sreg_32_xm0_xexec = S_LOAD_DWORD_IMM %3, 48, 0 :: (dereferenceable invariant load (s32), align 16, addrspace 4)
    %7:sgpr_256 = S_LOAD_DWORDX8_IMM %3, 56, 0 :: (dereferenceable invariant load (s256), align 8, addrspace 4)
    %8:sreg_64_xexec = S_LOAD_DWORDX2_IMM %5.sub0_sub1, 0, 0 :: (invariant load (s64), align 16, addrspace 4)
    ADJCALLSTACKUP 0, 0, implicit-def dead $scc, implicit-def $sgpr32, implicit $sgpr32
    $vgpr1 = COPY %5.sub7
    dead $sgpr30_sgpr31 = SI_CALL undef %8, 0, csr_amdgpu, implicit undef $sgpr15, implicit $vgpr31, implicit $sgpr0_sgpr1_sgpr2_sgpr3
    ADJCALLSTACKDOWN 0, 0, implicit-def dead $scc, implicit-def $sgpr32, implicit $sgpr32
    $vcc = COPY %2
    S_CBRANCH_VCCZ %bb.2, implicit undef $vcc

  bb.1:
    S_BRANCH %bb.3

  bb.2:
    S_CMP_LG_U64 %7.sub0_sub1, 0, implicit-def $scc

  bb.3:
    S_CBRANCH_VCCZ %bb.5, implicit undef $vcc

  bb.4:
    S_CMP_EQ_U32 %7.sub4, 0, implicit-def $scc

  bb.5:
    %9:sreg_64_xexec = S_LOAD_DWORDX2_IMM %3, 40, 0 :: (dereferenceable invariant load (s64), addrspace 4)
    GLOBAL_STORE_DWORD_SADDR undef %1, undef %1, %7.sub2_sub3, 0, 0, implicit $exec :: (store (s32), addrspace 1)
    GLOBAL_STORE_DWORD_SADDR undef %1, undef %1, %5.sub6_sub7, 0, 0, implicit $exec :: (store (s32), addrspace 1)
    %10:vgpr_32 = COPY %5.sub5
    ADJCALLSTACKUP 0, 0, implicit-def dead $scc, implicit-def $sgpr32, implicit $sgpr32
    $sgpr6_sgpr7 = COPY %4
    $sgpr10_sgpr11 = COPY %0
    ADJCALLSTACKDOWN 0, 0, implicit-def dead $scc, implicit-def $sgpr32, implicit $sgpr32
    S_ENDPGM 0

...