; LLVM IR from 6leetcode/6leetcode :: questions/Algorithms/0024. Swap Nodes in Pairs (Solution)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }
%"class.std::vector.3" = type { %"struct.std::_Vector_base.4" }
%"struct.std::_Vector_base.4" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::initializer_list" = type { ptr, i64 }
%"class.std::allocator.5" = type { i8 }
%class.Solution = type { i8 }

@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str.2 = external hidden unnamed_addr constant [9 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [9 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z13ListNode_showB5cxx11P8ListNode(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

declare i32 @__gxx_personality_v0(...)

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(32)) #2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_Z13ListNode_initSt6vectorIiSaIiEE(ptr noundef) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z16ListNode_destoryP8ListNode(ptr noundef) #3

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main(i32 noundef %0, ptr noundef %1) #4 personality ptr @__gxx_personality_v0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca %"class.std::vector.3", align 8
  %7 = alloca %"class.std::initializer_list", align 8
  %8 = alloca [4 x i32], align 4
  %9 = alloca %"class.std::allocator.5", align 1
  %10 = alloca ptr, align 8
  %11 = alloca i32, align 4
  %12 = alloca ptr, align 8
  %13 = alloca %"class.std::vector.3", align 8
  %14 = alloca %"class.std::__cxx11::basic_string", align 8
  %15 = alloca %class.Solution, align 1
  %16 = alloca ptr, align 8
  %17 = alloca %"class.std::__cxx11::basic_string", align 8
  store i32 0, ptr %3, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 24, ptr %6) #5
  call void @llvm.lifetime.start.p0(i64 16, ptr %8) #5
  store i32 1, ptr %8, align 4, !tbaa !5
  %18 = getelementptr inbounds i32, ptr %8, i64 1
  store i32 2, ptr %18, align 4, !tbaa !5
  %19 = getelementptr inbounds i32, ptr %8, i64 2
  store i32 3, ptr %19, align 4, !tbaa !5
  %20 = getelementptr inbounds i32, ptr %8, i64 3
  store i32 4, ptr %20, align 4, !tbaa !5
  %21 = getelementptr inbounds %"class.std::initializer_list", ptr %7, i32 0, i32 0
  store ptr %8, ptr %21, align 8, !tbaa !11
  %22 = getelementptr inbounds %"class.std::initializer_list", ptr %7, i32 0, i32 1
  store i64 4, ptr %22, align 8, !tbaa !14
  call void @llvm.lifetime.start.p0(i64 1, ptr %9) #5
  call void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %9) #5
  %23 = getelementptr inbounds { ptr, i64 }, ptr %7, i32 0, i32 0
  %24 = load ptr, ptr %23, align 8
  %25 = getelementptr inbounds { ptr, i64 }, ptr %7, i32 0, i32 1
  %26 = load i64, ptr %25, align 8
  invoke void @_ZNSt6vectorIiSaIiEEC2ESt16initializer_listIiERKS0_(ptr noundef nonnull align 8 dereferenceable(24) %6, ptr %24, i64 %26, ptr noundef nonnull align 1 dereferenceable(1) %9)
          to label %27 unwind label %52

27:                                               ; preds = %2
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %9) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %9) #5
  call void @llvm.lifetime.end.p0(i64 16, ptr %8) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #5
  invoke void @_ZNSt6vectorIiSaIiEEC2ERKS1_(ptr noundef nonnull align 8 dereferenceable(24) %13, ptr noundef nonnull align 8 dereferenceable(24) %6)
          to label %28 unwind label %56

28:                                               ; preds = %27
  %29 = invoke noundef ptr @_Z13ListNode_initSt6vectorIiSaIiEE(ptr noundef %13)
          to label %30 unwind label %60

30:                                               ; preds = %28
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %13) #5
  store ptr %29, ptr %12, align 8, !tbaa !9
  %31 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.2)
          to label %32 unwind label %56

32:                                               ; preds = %30
  call void @llvm.lifetime.start.p0(i64 32, ptr %14) #5
  %33 = load ptr, ptr %12, align 8, !tbaa !9
  invoke void @_Z13ListNode_showB5cxx11P8ListNode(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %14, ptr noundef %33)
          to label %34 unwind label %64

34:                                               ; preds = %32
  %35 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8) %31, ptr noundef nonnull align 8 dereferenceable(32) %14)
          to label %36 unwind label %68

36:                                               ; preds = %34
  %37 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %35, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %38 unwind label %68

38:                                               ; preds = %36
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %14) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr %14) #5
  call void @llvm.lifetime.start.p0(i64 1, ptr %15) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %16) #5
  %39 = load ptr, ptr %12, align 8, !tbaa !9
  %40 = invoke noundef ptr @_ZN8Solution9swapPairsEP8ListNode(ptr noundef nonnull align 1 dereferenceable(1) %15, ptr noundef %39)
          to label %41 unwind label %73

41:                                               ; preds = %38
  store ptr %40, ptr %16, align 8, !tbaa !9
  %42 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.3)
          to label %43 unwind label %73

43:                                               ; preds = %41
  call void @llvm.lifetime.start.p0(i64 32, ptr %17) #5
  %44 = load ptr, ptr %16, align 8, !tbaa !9
  invoke void @_Z13ListNode_showB5cxx11P8ListNode(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %17, ptr noundef %44)
          to label %45 unwind label %77

45:                                               ; preds = %43
  %46 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8) %42, ptr noundef nonnull align 8 dereferenceable(32) %17)
          to label %47 unwind label %81

47:                                               ; preds = %45
  %48 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %46, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %49 unwind label %81

49:                                               ; preds = %47
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %17) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr %17) #5
  %50 = load ptr, ptr %16, align 8, !tbaa !9
  call void @_Z16ListNode_destoryP8ListNode(ptr noundef %50)
  store i32 0, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %16) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %15) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #5
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr %6) #5
  %51 = load i32, ptr %3, align 4
  ret i32 %51

52:                                               ; preds = %2
  %53 = landingpad { ptr, i32 }
          cleanup
  %54 = extractvalue { ptr, i32 } %53, 0
  store ptr %54, ptr %10, align 8
  %55 = extractvalue { ptr, i32 } %53, 1
  store i32 %55, ptr %11, align 4
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %9) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %9) #5
  call void @llvm.lifetime.end.p0(i64 16, ptr %8) #5
  br label %88

56:                                               ; preds = %30, %27
  %57 = landingpad { ptr, i32 }
          cleanup
  %58 = extractvalue { ptr, i32 } %57, 0
  store ptr %58, ptr %10, align 8
  %59 = extractvalue { ptr, i32 } %57, 1
  store i32 %59, ptr %11, align 4
  br label %87

60:                                               ; preds = %28
  %61 = landingpad { ptr, i32 }
          cleanup
  %62 = extractvalue { ptr, i32 } %61, 0
  store ptr %62, ptr %10, align 8
  %63 = extractvalue { ptr, i32 } %61, 1
  store i32 %63, ptr %11, align 4
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %13) #5
  br label %87

64:                                               ; preds = %32
  %65 = landingpad { ptr, i32 }
          cleanup
  %66 = extractvalue { ptr, i32 } %65, 0
  store ptr %66, ptr %10, align 8
  %67 = extractvalue { ptr, i32 } %65, 1
  store i32 %67, ptr %11, align 4
  br label %72

68:                                               ; preds = %36, %34
  %69 = landingpad { ptr, i32 }
          cleanup
  %70 = extractvalue { ptr, i32 } %69, 0
  store ptr %70, ptr %10, align 8
  %71 = extractvalue { ptr, i32 } %69, 1
  store i32 %71, ptr %11, align 4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %14) #5
  br label %72

72:                                               ; preds = %68, %64
  call void @llvm.lifetime.end.p0(i64 32, ptr %14) #5
  br label %87

73:                                               ; preds = %41, %38
  %74 = landingpad { ptr, i32 }
          cleanup
  %75 = extractvalue { ptr, i32 } %74, 0
  store ptr %75, ptr %10, align 8
  %76 = extractvalue { ptr, i32 } %74, 1
  store i32 %76, ptr %11, align 4
  br label %86

77:                                               ; preds = %43
  %78 = landingpad { ptr, i32 }
          cleanup
  %79 = extractvalue { ptr, i32 } %78, 0
  store ptr %79, ptr %10, align 8
  %80 = extractvalue { ptr, i32 } %78, 1
  store i32 %80, ptr %11, align 4
  br label %85

81:                                               ; preds = %47, %45
  %82 = landingpad { ptr, i32 }
          cleanup
  %83 = extractvalue { ptr, i32 } %82, 0
  store ptr %83, ptr %10, align 8
  %84 = extractvalue { ptr, i32 } %82, 1
  store i32 %84, ptr %11, align 4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %17) #5
  br label %85

85:                                               ; preds = %81, %77
  call void @llvm.lifetime.end.p0(i64 32, ptr %17) #5
  br label %86

86:                                               ; preds = %85, %73
  call void @llvm.lifetime.end.p0(i64 8, ptr %16) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %15) #5
  br label %87

87:                                               ; preds = %86, %72, %60, %56
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #5
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #5
  br label %88

88:                                               ; preds = %87, %52
  call void @llvm.lifetime.end.p0(i64 24, ptr %6) #5
  br label %89

89:                                               ; preds = %88
  %90 = load ptr, ptr %10, align 8
  %91 = load i32, ptr %11, align 4
  %92 = insertvalue { ptr, i32 } poison, ptr %90, 0
  %93 = insertvalue { ptr, i32 } %92, i32 %91, 1
  resume { ptr, i32 } %93
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2ESt16initializer_listIiERKS0_(ptr noundef nonnull align 8 dereferenceable(24), ptr, i64, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2ERKS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #2

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_ZN8Solution9swapPairsEP8ListNode(ptr noundef nonnull align 1 dereferenceable(1), ptr noundef) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { inlinehint mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #4 = { mustprogress norecurse uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #5 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"_ZTSSt16initializer_listIiE", !10, i64 0, !13, i64 8}
!13 = !{!"long", !7, i64 0}
!14 = !{!12, !13, i64 8}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }
%"class.std::vector.3" = type { %"struct.std::_Vector_base.4" }
%"struct.std::_Vector_base.4" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator.5" = type { i8 }
%class.Solution = type { i8 }

@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str.2 = external hidden unnamed_addr constant [9 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [9 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z13ListNode_showB5cxx11P8ListNode(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

declare i32 @__gxx_personality_v0(...)

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_Z13ListNode_initSt6vectorIiSaIiEE(ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z16ListNode_destoryP8ListNode(ptr noundef) local_unnamed_addr #3

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main(i32 noundef %0, ptr nocapture noundef readnone %1) local_unnamed_addr #4 personality ptr @__gxx_personality_v0 {
  %3 = alloca %"class.std::vector.3", align 8
  %4 = alloca [4 x i32], align 16
  %5 = alloca %"class.std::allocator.5", align 1
  %6 = alloca %"class.std::vector.3", align 8
  %7 = alloca %"class.std::__cxx11::basic_string", align 8
  %8 = alloca %class.Solution, align 1
  %9 = alloca %"class.std::__cxx11::basic_string", align 8
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %3) #5
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %4) #5
  store <4 x i32> <i32 1, i32 2, i32 3, i32 4>, ptr %4, align 16, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %5) #5
  call void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #5
  invoke void @_ZNSt6vectorIiSaIiEEC2ESt16initializer_listIiERKS0_(ptr noundef nonnull align 8 dereferenceable(24) %3, ptr nonnull %4, i64 4, ptr noundef nonnull align 1 dereferenceable(1) %5)
          to label %10 unwind label %30

10:                                               ; preds = %2
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %5) #5
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %4) #5
  invoke void @_ZNSt6vectorIiSaIiEEC2ERKS1_(ptr noundef nonnull align 8 dereferenceable(24) %6, ptr noundef nonnull align 8 dereferenceable(24) %3)
          to label %11 unwind label %32

11:                                               ; preds = %10
  %12 = invoke noundef ptr @_Z13ListNode_initSt6vectorIiSaIiEE(ptr noundef nonnull %6)
          to label %13 unwind label %34

13:                                               ; preds = %11
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #5
  %14 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.2)
          to label %15 unwind label %32

15:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %7) #5
  invoke void @_Z13ListNode_showB5cxx11P8ListNode(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %7, ptr noundef %12)
          to label %16 unwind label %36

16:                                               ; preds = %15
  %17 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8) %14, ptr noundef nonnull align 8 dereferenceable(32) %7)
          to label %18 unwind label %38

18:                                               ; preds = %16
  %19 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %17, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %20 unwind label %38

20:                                               ; preds = %18
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %7) #5
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %8) #5
  %21 = invoke noundef ptr @_ZN8Solution9swapPairsEP8ListNode(ptr noundef nonnull align 1 dereferenceable(1) %8, ptr noundef %12)
          to label %22 unwind label %41

22:                                               ; preds = %20
  %23 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.3)
          to label %24 unwind label %41

24:                                               ; preds = %22
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %9) #5
  invoke void @_Z13ListNode_showB5cxx11P8ListNode(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %9, ptr noundef %21)
          to label %25 unwind label %43

25:                                               ; preds = %24
  %26 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8) %23, ptr noundef nonnull align 8 dereferenceable(32) %9)
          to label %27 unwind label %45

27:                                               ; preds = %25
  %28 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %26, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %29 unwind label %45

29:                                               ; preds = %27
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %9) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %9) #5
  call void @_Z16ListNode_destoryP8ListNode(ptr noundef %21)
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %8) #5
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #5
  ret i32 0

30:                                               ; preds = %2
  %31 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %5) #5
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %4) #5
  br label %50

32:                                               ; preds = %13, %10
  %33 = landingpad { ptr, i32 }
          cleanup
  br label %49

34:                                               ; preds = %11
  %35 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #5
  br label %49

36:                                               ; preds = %15
  %37 = landingpad { ptr, i32 }
          cleanup
  br label %40

38:                                               ; preds = %18, %16
  %39 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #5
  br label %40

40:                                               ; preds = %38, %36
  %.pn = phi { ptr, i32 } [ %39, %38 ], [ %37, %36 ]
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %7) #5
  br label %49

41:                                               ; preds = %22, %20
  %42 = landingpad { ptr, i32 }
          cleanup
  br label %48

43:                                               ; preds = %24
  %44 = landingpad { ptr, i32 }
          cleanup
  br label %47

45:                                               ; preds = %27, %25
  %46 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %9) #5
  br label %47

47:                                               ; preds = %45, %43
  %.pn12 = phi { ptr, i32 } [ %46, %45 ], [ %44, %43 ]
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %9) #5
  br label %48

48:                                               ; preds = %47, %41
  %.pn12.pn = phi { ptr, i32 } [ %.pn12, %47 ], [ %42, %41 ]
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %8) #5
  br label %49

49:                                               ; preds = %48, %40, %34, %32
  %.pn12.pn.pn = phi { ptr, i32 } [ %.pn12.pn, %48 ], [ %.pn, %40 ], [ %33, %32 ], [ %35, %34 ]
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #5
  br label %50

50:                                               ; preds = %49, %30
  %.pn12.pn.pn.pn = phi { ptr, i32 } [ %.pn12.pn.pn, %49 ], [ %31, %30 ]
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #5
  resume { ptr, i32 } %.pn12.pn.pn.pn
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2ESt16initializer_listIiERKS0_(ptr noundef nonnull align 8 dereferenceable(24), ptr, i64, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2ERKS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #2

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_ZN8Solution9swapPairsEP8ListNode(ptr noundef nonnull align 1 dereferenceable(1), ptr noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { inlinehint mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #4 = { mustprogress norecurse uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #5 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


; Effective O3 passes: GlobalOptPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SLPVectorizerPass,SROAPass,SimplifyCFGPass