test/DebugInfo/AArch64/callsite.mir

# This test should not crash when generating call-site information. 
# It was created to make sure that if isCopyLikeInstr in TargetInstrInfo.h 
# returns an undef Dest Reg or Src Reg, we don't try to get a SubReg for it.

# RUN: llc --mtriple=arm64e-apple-ios -start-before=aarch64-asm-printer %s -filetype=obj -o /dev/null --emit-call-site-info 
--- |
  %struct.rtyuio = type { i8 }
  define noundef i32 @aserty(ptr noundef %0, ptr noundef %1) local_unnamed_addr #0 !dbg !23 {
    ret i32 0
  }
  define void @asdfgh(ptr noundef %0, ptr noundef %1, i8 noundef zeroext %2) local_unnamed_addr #0 !dbg !53 {
    %4 = alloca ptr
    %5 = call ptr @llvm.stackguard()
    %6 = alloca %struct.rtyuio
    %7 = icmp eq ptr %1, null
    br i1 %7, label %10, label %8
    %9 = tail call i8 @polkiokl(ptr noundef %0) #6
    br label %10
    ret void
  }
  declare i8 @polkiokl(ptr noundef) local_unnamed_addr #2
  !llvm.module.flags = !{!2, !8}
  !llvm.dbg.cu = !{!9}
  !2 = !{i32 2, !"Debug Info Version", i32 3}
  !8 = !{i32 7, !"frame-pointer", i32 1}
  !9 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_11, file: !10, emissionKind: FullDebug, sysroot: "/")
  !10 = !DIFile(filename: "a.cpp", directory: "/")
  !23 = distinct !DISubprogram(type: !27, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, unit: !9, retainedNodes: !46)
  !24 = distinct !DICompositeType(tag: DW_TAG_class_type, identifier: "yshscbshhdvcm")
  !27 = !DISubroutineType(types: !28)
  !28 = !{}
  !30 = !DIDerivedType(tag: DW_TAG_typedef, baseType: !33)
  !33 = distinct !DICompositeType(tag: DW_TAG_structure_type, identifier: "tyruwyeuiwiybabd")
  !36 = !DISubroutineType(types: !37)
  !37 = !{}
  !46 = !{}
  !47 = !DILocalVariable(scope: !23, type: !48, flags: DIFlagArtificial | DIFlagObjectPointer)
  !48 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !24, size: 64)
  !49 = !DILocalVariable(scope: !23, type: !30)
  !50 = !DILocation(scope: !23)
  !51 = !DILocation(scope: !23)
  !53 = distinct !DISubprogram(type: !36, unit: !9, retainedNodes: !54)
  !54 = !{}
name:            aserty
stack:
  - { id: 0, name: '', type: spill-slot, offset: -8, size: 8, alignment: 8, 
      debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
  - { id: 1, name: '', type: spill-slot, offset: -16, size: 8, alignment: 8, 
      debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
callSites:
  - { bb: 0, offset: 9, fwdArgRegs: 
      - { arg: 2, reg: '$w2' } }
body:             |
  bb.0 (%ir-block.2):
    DBG_VALUE $x0, $noreg, !47, !DIExpression(),  debug-location !50
    DBG_VALUE $x1, $noreg, !49, !DIExpression(),  debug-location !50
    frame-setup PACIBSP implicit-def $lr, implicit killed $lr, implicit $sp
    early-clobber $sp = frame-setup STPXpre $fp, killed $lr, $sp, -2 :: (store (s64) into %stack.1), (store (s64) into %stack.0)
    $fp = frame-setup ADDXri $sp, 0, 0
    frame-setup CFI_INSTRUCTION def_cfa $w29, 16
    frame-setup CFI_INSTRUCTION offset $w30, -8
    frame-setup CFI_INSTRUCTION offset $w29, -16
    $x2 = ORRXrs $xzr, undef $noreg, 0, implicit $wzr,  debug-location !51
    BL @asdfgh, csr_darwin_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $x0, implicit killed $x1, implicit killed $w2, implicit-def $sp,  debug-location !51
...
name:            asdfgh
body:             |
  bb.2 (%ir-block.10):