; LLVM IR from Chasmiccoder/Algos-for-Amigos :: Computer-Science/1-DSA-Fundamentals/2-Stacks-Queues-Linked-Lists (main)

; 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::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"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] }

@.str.2 = external hidden unnamed_addr constant [1 x i8], align 1
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str.14 = external hidden unnamed_addr constant [15 x i8], align 1
@.str.15 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.16 = external hidden unnamed_addr constant [26 x i8], align 1
@.str.17 = external hidden unnamed_addr constant [31 x i8], align 1
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@.str.18 = external hidden unnamed_addr constant [19 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z7enqueuePNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES4_PiS6_i(ptr noundef, ptr noundef, ptr noundef, ptr noundef, i32 noundef) #0

declare i32 @printf(ptr noundef, ...) #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z7dequeuePNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPiS6_(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef, ptr noundef, ptr noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #0 align 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 void @_Z20print_front_and_rearPNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPiS6_(ptr noundef, ptr noundef, ptr noundef) #0

; 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)) #4

; 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)) #4

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z10print_menuv() #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #5 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca [10 x %"class.std::__cxx11::basic_string"], align 16
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca %"class.std::__cxx11::basic_string", align 8
  %11 = alloca %"class.std::__cxx11::basic_string", align 8
  %12 = alloca %"class.std::__cxx11::basic_string", align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #6
  store i32 10, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 320, ptr %3) #6
  %13 = getelementptr inbounds [10 x %"class.std::__cxx11::basic_string"], ptr %3, i32 0, i32 0
  %14 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %13, i64 10
  br label %15

15:                                               ; preds = %15, %0
  %16 = phi ptr [ %13, %0 ], [ %17, %15 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %16) #6
  %17 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %16, i64 1
  %18 = icmp eq ptr %17, %14
  br i1 %18, label %19, label %15

19:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #6
  store i32 -1, ptr %4, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #6
  store i32 -1, ptr %5, align 4, !tbaa !5
  br label %20

20:                                               ; preds = %97, %19
  br label %21

21:                                               ; preds = %20
  invoke void @_Z10print_menuv()
          to label %22 unwind label %32

22:                                               ; preds = %21
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #6
  %23 = invoke i32 (ptr, ...) @printf(ptr noundef @.str.14)
          to label %24 unwind label %36

24:                                               ; preds = %22
  %25 = invoke i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.15, ptr noundef %8)
          to label %26 unwind label %36

26:                                               ; preds = %24
  %27 = load i32, ptr %8, align 4, !tbaa !5
  %28 = icmp eq i32 %27, 0
  br i1 %28, label %29, label %40

29:                                               ; preds = %26
  %30 = invoke i32 (ptr, ...) @printf(ptr noundef @.str.16)
          to label %31 unwind label %36

31:                                               ; preds = %29
  store i32 3, ptr %9, align 4
  br label %95

32:                                               ; preds = %21
  %33 = landingpad { ptr, i32 }
          cleanup
  %34 = extractvalue { ptr, i32 } %33, 0
  store ptr %34, ptr %6, align 8
  %35 = extractvalue { ptr, i32 } %33, 1
  store i32 %35, ptr %7, align 4
  br label %102

36:                                               ; preds = %88, %29, %24, %22
  %37 = landingpad { ptr, i32 }
          cleanup
  %38 = extractvalue { ptr, i32 } %37, 0
  store ptr %38, ptr %6, align 8
  %39 = extractvalue { ptr, i32 } %37, 1
  store i32 %39, ptr %7, align 4
  br label %98

40:                                               ; preds = %26
  %41 = load i32, ptr %8, align 4, !tbaa !5
  %42 = icmp eq i32 %41, 1
  br i1 %42, label %43, label %60

43:                                               ; preds = %40
  call void @llvm.lifetime.start.p0(i64 32, ptr %10) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %10) #6
  %44 = invoke i32 (ptr, ...) @printf(ptr noundef @.str.17)
          to label %45 unwind label %51

45:                                               ; preds = %43
  %46 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(32) %10)
          to label %47 unwind label %51

47:                                               ; preds = %45
  %48 = getelementptr inbounds [10 x %"class.std::__cxx11::basic_string"], ptr %3, i64 0, i64 0
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %11, ptr noundef nonnull align 8 dereferenceable(32) %10)
          to label %49 unwind label %51

49:                                               ; preds = %47
  invoke void @_Z7enqueuePNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES4_PiS6_i(ptr noundef %48, ptr noundef %11, ptr noundef %5, ptr noundef %4, i32 noundef 10)
          to label %50 unwind label %55

50:                                               ; preds = %49
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %11) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %10) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %10) #6
  br label %93

51:                                               ; preds = %47, %45, %43
  %52 = landingpad { ptr, i32 }
          cleanup
  %53 = extractvalue { ptr, i32 } %52, 0
  store ptr %53, ptr %6, align 8
  %54 = extractvalue { ptr, i32 } %52, 1
  store i32 %54, ptr %7, align 4
  br label %59

55:                                               ; preds = %49
  %56 = landingpad { ptr, i32 }
          cleanup
  %57 = extractvalue { ptr, i32 } %56, 0
  store ptr %57, ptr %6, align 8
  %58 = extractvalue { ptr, i32 } %56, 1
  store i32 %58, ptr %7, align 4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %11) #6
  br label %59

59:                                               ; preds = %55, %51
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %10) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %10) #6
  br label %98

60:                                               ; preds = %40
  %61 = load i32, ptr %8, align 4, !tbaa !5
  %62 = icmp eq i32 %61, 2
  br i1 %62, label %63, label %85

63:                                               ; preds = %60
  call void @llvm.lifetime.start.p0(i64 32, ptr %12) #6
  %64 = getelementptr inbounds [10 x %"class.std::__cxx11::basic_string"], ptr %3, i64 0, i64 0
  invoke void @_Z7dequeuePNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPiS6_(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %12, ptr noundef %64, ptr noundef %5, ptr noundef %4)
          to label %65 unwind label %75

65:                                               ; preds = %63
  %66 = invoke noundef zeroext i1 @_ZStneIcSt11char_traitsIcESaIcEEbRKNSt7__cxx1112basic_stringIT_T0_T1_EEPKS5_(ptr noundef nonnull align 8 dereferenceable(32) %12, ptr noundef @.str.2)
          to label %67 unwind label %79

67:                                               ; preds = %65
  br i1 %66, label %68, label %83

68:                                               ; preds = %67
  %69 = invoke i32 (ptr, ...) @printf(ptr noundef @.str.18)
          to label %70 unwind label %79

70:                                               ; preds = %68
  %71 = 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) @_ZSt4cout, ptr noundef nonnull align 8 dereferenceable(32) %12)
          to label %72 unwind label %79

72:                                               ; preds = %70
  %73 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %71, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %74 unwind label %79

74:                                               ; preds = %72
  br label %83

75:                                               ; preds = %63
  %76 = landingpad { ptr, i32 }
          cleanup
  %77 = extractvalue { ptr, i32 } %76, 0
  store ptr %77, ptr %6, align 8
  %78 = extractvalue { ptr, i32 } %76, 1
  store i32 %78, ptr %7, align 4
  br label %84

79:                                               ; preds = %72, %70, %68, %65
  %80 = landingpad { ptr, i32 }
          cleanup
  %81 = extractvalue { ptr, i32 } %80, 0
  store ptr %81, ptr %6, align 8
  %82 = extractvalue { ptr, i32 } %80, 1
  store i32 %82, ptr %7, align 4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %12) #6
  br label %84

83:                                               ; preds = %74, %67
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %12) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %12) #6
  br label %92

84:                                               ; preds = %79, %75
  call void @llvm.lifetime.end.p0(i64 32, ptr %12) #6
  br label %98

85:                                               ; preds = %60
  %86 = load i32, ptr %8, align 4, !tbaa !5
  %87 = icmp eq i32 %86, 3
  br i1 %87, label %88, label %91

88:                                               ; preds = %85
  %89 = getelementptr inbounds [10 x %"class.std::__cxx11::basic_string"], ptr %3, i64 0, i64 0
  invoke void @_Z20print_front_and_rearPNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPiS6_(ptr noundef %89, ptr noundef %5, ptr noundef %4)
          to label %90 unwind label %36

90:                                               ; preds = %88
  br label %91

91:                                               ; preds = %90, %85
  br label %92

92:                                               ; preds = %91, %83
  br label %93

93:                                               ; preds = %92, %50
  br label %94

94:                                               ; preds = %93
  store i32 0, ptr %9, align 4
  br label %95

95:                                               ; preds = %94, %31
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #6
  %96 = load i32, ptr %9, align 4
  switch i32 %96, label %121 [
    i32 0, label %97
    i32 3, label %99
  ]

97:                                               ; preds = %95
  br label %20, !llvm.loop !9

98:                                               ; preds = %84, %59, %36
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #6
  br label %102

99:                                               ; preds = %95
  store i32 0, ptr %1, align 4
  store i32 1, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #6
  %100 = getelementptr inbounds [10 x %"class.std::__cxx11::basic_string"], ptr %3, i32 0, i32 0
  %101 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %100, i64 10
  br label %105

102:                                              ; preds = %98, %32
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #6
  %103 = getelementptr inbounds [10 x %"class.std::__cxx11::basic_string"], ptr %3, i32 0, i32 0
  %104 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %103, i64 10
  br label %111

105:                                              ; preds = %105, %99
  %106 = phi ptr [ %101, %99 ], [ %107, %105 ]
  %107 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %106, i64 -1
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %107) #6
  %108 = icmp eq ptr %107, %100
  br i1 %108, label %109, label %105

109:                                              ; preds = %105
  call void @llvm.lifetime.end.p0(i64 320, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  %110 = load i32, ptr %1, align 4
  ret i32 %110

111:                                              ; preds = %111, %102
  %112 = phi ptr [ %104, %102 ], [ %113, %111 ]
  %113 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %112, i64 -1
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %113) #6
  %114 = icmp eq ptr %113, %103
  br i1 %114, label %115, label %111

115:                                              ; preds = %111
  call void @llvm.lifetime.end.p0(i64 320, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  br label %116

116:                                              ; preds = %115
  %117 = load ptr, ptr %6, align 8
  %118 = load i32, ptr %7, align 4
  %119 = insertvalue { ptr, i32 } poison, ptr %117, 0
  %120 = insertvalue { ptr, i32 } %119, i32 %118, 1
  resume { ptr, i32 } %120

121:                                              ; preds = %95
  unreachable
}

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #3 align 2

declare i32 @__isoc99_scanf(ptr noundef, ...) #1

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(32)) #1

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZStneIcSt11char_traitsIcESaIcEEbRKNSt7__cxx1112basic_stringIT_T0_T1_EEPKS5_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef) #4

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 = { "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 #2 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 #5 = { 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 #6 = { 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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; 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::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"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] }

@.str.2 = external hidden unnamed_addr constant [1 x i8], align 1
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str.14 = external hidden unnamed_addr constant [15 x i8], align 1
@.str.15 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.16 = external hidden unnamed_addr constant [26 x i8], align 1
@.str.17 = external hidden unnamed_addr constant [31 x i8], align 1
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@.str.18 = external hidden unnamed_addr constant [19 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z7enqueuePNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES4_PiS6_i(ptr noundef, ptr noundef, ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z7dequeuePNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPiS6_(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef, ptr noundef, 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) #2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #0 align 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 void @_Z20print_front_and_rearPNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPiS6_(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #0

; 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 #4

; 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)) #4

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z10print_menuv() local_unnamed_addr #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #5 personality ptr @__gxx_personality_v0 {
  %1 = alloca [10 x %"class.std::__cxx11::basic_string"], align 16
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca %"class.std::__cxx11::basic_string", align 8
  %6 = alloca %"class.std::__cxx11::basic_string", align 8
  %7 = alloca %"class.std::__cxx11::basic_string", align 8
  call void @llvm.lifetime.start.p0(i64 320, ptr nonnull %1) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %1) #7
  %.ptr.1 = getelementptr inbounds i8, ptr %1, i64 32
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %.ptr.1) #7
  %.ptr.2 = getelementptr inbounds i8, ptr %1, i64 64
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %.ptr.2) #7
  %.ptr.3 = getelementptr inbounds i8, ptr %1, i64 96
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %.ptr.3) #7
  %.ptr.4 = getelementptr inbounds i8, ptr %1, i64 128
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %.ptr.4) #7
  %.ptr.5 = getelementptr inbounds i8, ptr %1, i64 160
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %.ptr.5) #7
  %.ptr.6 = getelementptr inbounds i8, ptr %1, i64 192
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %.ptr.6) #7
  %.ptr.7 = getelementptr inbounds i8, ptr %1, i64 224
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %.ptr.7) #7
  %.ptr.8 = getelementptr inbounds i8, ptr %1, i64 256
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %.ptr.8) #7
  %.ptr.9 = getelementptr inbounds i8, ptr %1, i64 288
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %.ptr.9) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #7
  store i32 -1, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #7
  store i32 -1, ptr %3, align 4, !tbaa !5
  br label %8

8:                                                ; preds = %44, %0
  invoke void @_Z10print_menuv()
          to label %9 unwind label %13

9:                                                ; preds = %8
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #7
  %10 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.14)
  %11 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.15, ptr noundef nonnull %4)
  %12 = load i32, ptr %4, align 4, !tbaa !5
  switch i32 %12, label %44 [
    i32 0, label %46
    i32 1, label %17
    i32 2, label %28
    i32 3, label %43
  ]

13:                                               ; preds = %8
  %14 = landingpad { ptr, i32 }
          cleanup
  br label %57

15:                                               ; preds = %43
  %16 = landingpad { ptr, i32 }
          cleanup
  br label %45

17:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %5) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %5) #7
  %18 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.17)
  %19 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(32) %5)
          to label %20 unwind label %23

20:                                               ; preds = %17
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %6, ptr noundef nonnull align 8 dereferenceable(32) %5)
          to label %21 unwind label %23

21:                                               ; preds = %20
  invoke void @_Z7enqueuePNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES4_PiS6_i(ptr noundef nonnull %1, ptr noundef nonnull %6, ptr noundef nonnull %3, ptr noundef nonnull %2, i32 noundef 10)
          to label %22 unwind label %25

22:                                               ; preds = %21
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %5) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %5) #7
  br label %44

23:                                               ; preds = %20, %17
  %24 = landingpad { ptr, i32 }
          cleanup
  br label %27

25:                                               ; preds = %21
  %26 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #7
  br label %27

27:                                               ; preds = %25, %23
  %.pn14 = phi { ptr, i32 } [ %26, %25 ], [ %24, %23 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %5) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %5) #7
  br label %45

28:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %7) #7
  invoke void @_Z7dequeuePNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPiS6_(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %7, ptr noundef nonnull %1, ptr noundef nonnull %3, ptr noundef nonnull %2)
          to label %29 unwind label %37

29:                                               ; preds = %28
  %30 = invoke noundef zeroext i1 @_ZStneIcSt11char_traitsIcESaIcEEbRKNSt7__cxx1112basic_stringIT_T0_T1_EEPKS5_(ptr noundef nonnull align 8 dereferenceable(32) %7, ptr noundef nonnull @.str.2)
          to label %31 unwind label %39

31:                                               ; preds = %29
  br i1 %30, label %32, label %41

32:                                               ; preds = %31
  %33 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.18)
  %34 = 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) @_ZSt4cout, ptr noundef nonnull align 8 dereferenceable(32) %7)
          to label %35 unwind label %39

35:                                               ; preds = %32
  %36 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %34, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %41 unwind label %39

37:                                               ; preds = %28
  %38 = landingpad { ptr, i32 }
          cleanup
  br label %42

39:                                               ; preds = %35, %32, %29
  %40 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #7
  br label %42

41:                                               ; preds = %35, %31
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %7) #7
  br label %44

42:                                               ; preds = %39, %37
  %.pn = phi { ptr, i32 } [ %40, %39 ], [ %38, %37 ]
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %7) #7
  br label %45

43:                                               ; preds = %9
  invoke void @_Z20print_front_and_rearPNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPiS6_(ptr noundef nonnull %1, ptr noundef nonnull %3, ptr noundef nonnull %2)
          to label %44 unwind label %15

44:                                               ; preds = %41, %43, %22, %9
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #7
  br label %8

45:                                               ; preds = %42, %27, %15
  %.pn14.pn = phi { ptr, i32 } [ %.pn14, %27 ], [ %.pn, %42 ], [ %16, %15 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #7
  br label %57

46:                                               ; preds = %9
  %47 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.16)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #7
  %48 = getelementptr inbounds i8, ptr %1, i64 288
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %48) #7
  %49 = getelementptr inbounds i8, ptr %1, i64 256
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %49) #7
  %50 = getelementptr inbounds i8, ptr %1, i64 224
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %50) #7
  %51 = getelementptr inbounds i8, ptr %1, i64 192
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %51) #7
  %52 = getelementptr inbounds i8, ptr %1, i64 160
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %52) #7
  %53 = getelementptr inbounds i8, ptr %1, i64 128
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %53) #7
  %54 = getelementptr inbounds i8, ptr %1, i64 96
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %54) #7
  %55 = getelementptr inbounds i8, ptr %1, i64 64
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %55) #7
  %56 = getelementptr inbounds i8, ptr %1, i64 32
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %56) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %1) #7
  call void @llvm.lifetime.end.p0(i64 320, ptr nonnull %1) #7
  ret i32 0

57:                                               ; preds = %45, %13
  %.pn14.pn.pn = phi { ptr, i32 } [ %.pn14.pn, %45 ], [ %14, %13 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #7
  %58 = getelementptr inbounds i8, ptr %1, i64 288
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %58) #7
  %59 = getelementptr inbounds i8, ptr %1, i64 256
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %59) #7
  %60 = getelementptr inbounds i8, ptr %1, i64 224
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %60) #7
  %61 = getelementptr inbounds i8, ptr %1, i64 192
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %61) #7
  %62 = getelementptr inbounds i8, ptr %1, i64 160
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %62) #7
  %63 = getelementptr inbounds i8, ptr %1, i64 128
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %63) #7
  %64 = getelementptr inbounds i8, ptr %1, i64 96
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %64) #7
  %65 = getelementptr inbounds i8, ptr %1, i64 64
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %65) #7
  %66 = getelementptr inbounds i8, ptr %1, i64 32
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %66) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %1) #7
  call void @llvm.lifetime.end.p0(i64 320, ptr nonnull %1) #7
  resume { ptr, i32 } %.pn14.pn.pn
}

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #3 align 2

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #6

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZStneIcSt11char_traitsIcESaIcEEbRKNSt7__cxx1112basic_stringIT_T0_T1_EEPKS5_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef) local_unnamed_addr #4

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 = { nofree nounwind "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 #2 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 #5 = { 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 #6 = { "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 #7 = { 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: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,SROAPass,SimplifyCFGPass