# RUN: llc -run-pass=aarch64-ldst-opt -mtriple=arm64-apple-iphoneos -aarch64-load-store-renaming=true -verify-machineinstrs -o - %s | FileCheck %s
--- |
  define void @test_dbg_value1() #0 { ret void }
  define void @test_dbg_value2() #0 { ret void }

  !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "llvm", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
  !1 = !DIFile(filename: "dbg.ll", directory: "/tmp")
  !2 = !{}
  !5 = distinct !DISubprogram(name: "test_dbg_value", scope: !1, file: !1, line: 1, type: !6, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
  !6 = !DISubroutineType(types: !2)
  !7 = !DILocalVariable(name: "x", arg: 1, scope: !5, file: !1, line: 1, type: !8)
  !8 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
  !9 = !DILocation(line: 1, column: 1, scope: !5)
  !10 = !{i32 2, !"Debug Info Version", i32 3}
  !llvm.dbg.cu = !{!0}
  !llvm.module.flags = !{!10}
---
# Check we do not crash when checking $noreg debug operands.
#
# CHECK-LABEL: name: test_dbg_value1
# CHECK: bb.0:
# CHECK-NEXT: liveins: $x0, $x1
# CHECK:       $x10, renamable $x8 = LDPXi renamable $x0, 0 :: (load 8)
# CHECK-NEXT:  renamable $x9 = LDRXui renamable $x0, 1 :: (load 8)
# CHECK-NEXT:  STRXui renamable $x9, renamable $x0, 100 :: (store 8, align 4)
# CHECK-NEXT:  DBG_VALUE $x9, $noreg
# CHECK-NEXT:  renamable $x8 = ADDXrr $x8, $x8
# CHECK-NEXT:  STPXi renamable $x8, killed $x10, renamable $x0, 10 :: (store 8, align 4)
# CHECK-NEXT:  RET undef $lr
name:           test_dbg_value1
alignment:       4
tracksRegLiveness: true
liveins:
  - { reg: '$x0' }
  - { reg: '$x1' }
  - { reg: '$x8' }
frameInfo:
  maxAlignment:    1
  maxCallFrameSize: 0
machineFunctionInfo: {}
body:             |
  bb.0:
    liveins: $x0, $x1
    renamable $x9, renamable $x8 = LDPXi renamable $x0, 0 :: (load 8)
    STRXui renamable killed $x9, renamable $x0, 11 :: (store 8, align 4)
    renamable $x9 = LDRXui renamable $x0, 1 :: (load 8)
    STRXui renamable $x9, renamable $x0, 100 :: (store 8, align 4)
    DBG_VALUE $x9, $noreg, !7, !DIExpression(DW_OP_plus_uconst, 32), debug-location !9
    renamable $x8 = ADDXrr $x8, $x8
    STRXui renamable $x8, renamable $x0, 10 :: (store 8, align 4)
    RET undef $lr

...

# CHECK-LABEL: name: test_dbg_value2
# CHECK: bb.0:
# CHECK-NEXT: liveins: $x19, $x20, $x0

# CHECK:       $x8 = ORRXrs $xzr, $x0, 0
# CHECK-NEXT:  renamable $x0 = nuw ADDXri $x0, 8, 0
# CHECK-NEXT:  DBG_VALUE $x0, $noreg,
# CHECK-NEXT:  STRXui killed renamable $x8, renamable $x19, 2 :: (store 8)
# CHECK-NEXT:  $x8 = ADDXrs renamable $x0, killed renamable $x20, 0
# CHECK-NEXT:  STPXi $xzr, renamable $x8, renamable $x19, 0 :: (store 8)
# CHECK-NEXT:  RET undef $lr, implicit $x0
name:            test_dbg_value2
alignment:       4
tracksRegLiveness: true
liveins:
  - { reg: '$x0' }
  - { reg: '$x1' }
frameInfo:
  maxAlignment:    1
  maxCallFrameSize: 0
machineFunctionInfo: {}
body:             |
  bb.0:
    liveins: $x19, $x20, $x0

    $x8 = ORRXrs $xzr, $x0, 0
    renamable $x0 = nuw ADDXri $x0, 8, 0
    DBG_VALUE $x0, $noreg, !7, !DIExpression(), debug-location !9
    STRXui killed renamable $x8, renamable $x19, 2 :: (store 8)
    $x8 = ADDXrs renamable $x0, killed renamable $x20, 0
    STRXui $xzr, renamable $x19, 0 :: (store 8)
    STRXui killed renamable $x8, killed renamable $x19, 1 :: (store 8)
    RET undef $lr, implicit $x0
...