; LLVM IR from VSFe/Algorithm_Study :: Concept/Prev/vol.1/01_Queue_Stack/SampleCode/C++ (Programmers_42584)

; 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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = 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" = type { i8 }
%"class.std::stack" = type { %"class.std::deque" }
%"class.std::deque" = type { %"class.std::_Deque_base" }
%"class.std::_Deque_base" = type { %"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl" }
%"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl" = type { %"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl_data" }
%"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator", %"struct.std::_Deque_iterator" }
%"struct.std::_Deque_iterator" = type { ptr, ptr, ptr, ptr }
%"struct.std::pair" = type { i32, i32 }

; Function Attrs: mustprogress uwtable
define dso_local void @_Z8solutionSt6vectorIiSaIiEE(ptr dead_on_unwind noalias writable sret(%"class.std::vector") align 8 %0, ptr noundef %1) #0 personality ptr @__gxx_personality_v0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i1, align 1
  %6 = alloca i32, align 4
  %7 = alloca %"class.std::allocator", align 1
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca %"class.std::stack", align 8
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca %"struct.std::pair", align 4
  %14 = alloca %"struct.std::pair", align 4
  %15 = alloca %"struct.std::pair", align 4
  store ptr %0, ptr %3, align 8
  store ptr %1, ptr %4, align 8, !tbaa !5
  store i1 false, ptr %5, align 1
  %16 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #5
  store i32 0, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 1, ptr %7) #5
  call void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %7) #5
  invoke void @_ZNSt6vectorIiSaIiEEC2EmRKiRKS0_(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %16, ptr noundef nonnull align 4 dereferenceable(4) %6, ptr noundef nonnull align 1 dereferenceable(1) %7)
          to label %17 unwind label %25

17:                                               ; preds = %2
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %7) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %7) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  call void @llvm.lifetime.start.p0(i64 80, ptr %10) #5
  invoke void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEEC2IS4_vEEv(ptr noundef nonnull align 8 dereferenceable(80) %10)
          to label %18 unwind label %29

18:                                               ; preds = %17
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #5
  store i32 0, ptr %11, align 4, !tbaa !9
  br label %19

19:                                               ; preds = %73, %18
  %20 = load i32, ptr %11, align 4, !tbaa !9
  %21 = sext i32 %20 to i64
  %22 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #5
  %23 = icmp ult i64 %21, %22
  br i1 %23, label %33, label %24

24:                                               ; preds = %19
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #5
  br label %81

25:                                               ; preds = %2
  %26 = landingpad { ptr, i32 }
          cleanup
  %27 = extractvalue { ptr, i32 } %26, 0
  store ptr %27, ptr %8, align 8
  %28 = extractvalue { ptr, i32 } %26, 1
  store i32 %28, ptr %9, align 4
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %7) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %7) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  br label %115

29:                                               ; preds = %17
  %30 = landingpad { ptr, i32 }
          cleanup
  %31 = extractvalue { ptr, i32 } %30, 0
  store ptr %31, ptr %8, align 8
  %32 = extractvalue { ptr, i32 } %30, 1
  store i32 %32, ptr %9, align 4
  br label %112

33:                                               ; preds = %19
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #5
  %34 = load i32, ptr %11, align 4, !tbaa !9
  %35 = sext i32 %34 to i64
  %36 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %35) #5
  %37 = load i32, ptr %36, align 4, !tbaa !9
  store i32 %37, ptr %12, align 4, !tbaa !9
  br label %38

38:                                               ; preds = %53, %33
  %39 = invoke noundef zeroext i1 @_ZNKSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) %10)
          to label %40 unwind label %62

40:                                               ; preds = %38
  br i1 %39, label %48, label %41

41:                                               ; preds = %40
  %42 = invoke noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %10)
          to label %43 unwind label %62

43:                                               ; preds = %41
  %44 = getelementptr inbounds %"struct.std::pair", ptr %42, i32 0, i32 1
  %45 = load i32, ptr %44, align 4, !tbaa !11
  %46 = load i32, ptr %12, align 4, !tbaa !9
  %47 = icmp sgt i32 %45, %46
  br label %48

48:                                               ; preds = %43, %40
  %49 = phi i1 [ false, %40 ], [ %47, %43 ]
  br i1 %49, label %50, label %70

50:                                               ; preds = %48
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #5
  %51 = invoke noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %10)
          to label %52 unwind label %66

52:                                               ; preds = %50
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %13, ptr align 4 %51, i64 8, i1 false)
  invoke void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %10)
          to label %53 unwind label %66

53:                                               ; preds = %52
  %54 = load i32, ptr %11, align 4, !tbaa !9
  %55 = getelementptr inbounds %"struct.std::pair", ptr %13, i32 0, i32 0
  %56 = load i32, ptr %55, align 4, !tbaa !13
  %57 = sub nsw i32 %54, %56
  %58 = getelementptr inbounds %"struct.std::pair", ptr %13, i32 0, i32 0
  %59 = load i32, ptr %58, align 4, !tbaa !13
  %60 = sext i32 %59 to i64
  %61 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %60) #5
  store i32 %57, ptr %61, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #5
  br label %38, !llvm.loop !14

62:                                               ; preds = %41, %38
  %63 = landingpad { ptr, i32 }
          cleanup
  %64 = extractvalue { ptr, i32 } %63, 0
  store ptr %64, ptr %8, align 8
  %65 = extractvalue { ptr, i32 } %63, 1
  store i32 %65, ptr %9, align 4
  br label %80

66:                                               ; preds = %52, %50
  %67 = landingpad { ptr, i32 }
          cleanup
  %68 = extractvalue { ptr, i32 } %67, 0
  store ptr %68, ptr %8, align 8
  %69 = extractvalue { ptr, i32 } %67, 1
  store i32 %69, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #5
  br label %80

70:                                               ; preds = %48
  call void @llvm.lifetime.start.p0(i64 8, ptr %14) #5
  invoke void @_ZNSt4pairIiiEC2IRiS2_TnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 4 dereferenceable(8) %14, ptr noundef nonnull align 4 dereferenceable(4) %11, ptr noundef nonnull align 4 dereferenceable(4) %12)
          to label %71 unwind label %76

71:                                               ; preds = %70
  invoke void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE4pushEOS1_(ptr noundef nonnull align 8 dereferenceable(80) %10, ptr noundef nonnull align 4 dereferenceable(8) %14)
          to label %72 unwind label %76

72:                                               ; preds = %71
  call void @llvm.lifetime.end.p0(i64 8, ptr %14) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #5
  br label %73

73:                                               ; preds = %72
  %74 = load i32, ptr %11, align 4, !tbaa !9
  %75 = add nsw i32 %74, 1
  store i32 %75, ptr %11, align 4, !tbaa !9
  br label %19, !llvm.loop !16

76:                                               ; preds = %71, %70
  %77 = landingpad { ptr, i32 }
          cleanup
  %78 = extractvalue { ptr, i32 } %77, 0
  store ptr %78, ptr %8, align 8
  %79 = extractvalue { ptr, i32 } %77, 1
  store i32 %79, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %14) #5
  br label %80

80:                                               ; preds = %76, %66, %62
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #5
  br label %111

81:                                               ; preds = %24
  br label %82

82:                                               ; preds = %89, %81
  %83 = invoke noundef zeroext i1 @_ZNKSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) %10)
          to label %84 unwind label %101

84:                                               ; preds = %82
  %85 = xor i1 %83, true
  br i1 %85, label %86, label %109

86:                                               ; preds = %84
  call void @llvm.lifetime.start.p0(i64 8, ptr %15) #5
  %87 = invoke noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %10)
          to label %88 unwind label %105

88:                                               ; preds = %86
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %15, ptr align 4 %87, i64 8, i1 false)
  invoke void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %10)
          to label %89 unwind label %105

89:                                               ; preds = %88
  %90 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #5
  %91 = getelementptr inbounds %"struct.std::pair", ptr %15, i32 0, i32 0
  %92 = load i32, ptr %91, align 4, !tbaa !13
  %93 = sext i32 %92 to i64
  %94 = sub i64 %90, %93
  %95 = sub i64 %94, 1
  %96 = trunc i64 %95 to i32
  %97 = getelementptr inbounds %"struct.std::pair", ptr %15, i32 0, i32 0
  %98 = load i32, ptr %97, align 4, !tbaa !13
  %99 = sext i32 %98 to i64
  %100 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %99) #5
  store i32 %96, ptr %100, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %15) #5
  br label %82, !llvm.loop !17

101:                                              ; preds = %82
  %102 = landingpad { ptr, i32 }
          cleanup
  %103 = extractvalue { ptr, i32 } %102, 0
  store ptr %103, ptr %8, align 8
  %104 = extractvalue { ptr, i32 } %102, 1
  store i32 %104, ptr %9, align 4
  br label %111

105:                                              ; preds = %88, %86
  %106 = landingpad { ptr, i32 }
          cleanup
  %107 = extractvalue { ptr, i32 } %106, 0
  store ptr %107, ptr %8, align 8
  %108 = extractvalue { ptr, i32 } %106, 1
  store i32 %108, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %15) #5
  br label %111

109:                                              ; preds = %84
  store i1 true, ptr %5, align 1
  call void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %10) #5
  call void @llvm.lifetime.end.p0(i64 80, ptr %10) #5
  %110 = load i1, ptr %5, align 1
  br i1 %110, label %114, label %113

111:                                              ; preds = %105, %101, %80
  call void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %10) #5
  br label %112

112:                                              ; preds = %111, %29
  call void @llvm.lifetime.end.p0(i64 80, ptr %10) #5
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #5
  br label %115

113:                                              ; preds = %109
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #5
  br label %114

114:                                              ; preds = %113, %109
  ret void

115:                                              ; preds = %112, %25
  %116 = load ptr, ptr %8, align 8
  %117 = load i32, ptr %9, align 4
  %118 = insertvalue { ptr, i32 } poison, ptr %116, 0
  %119 = insertvalue { ptr, i32 } %118, i32 %117, 1
  resume { ptr, i32 } %119
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

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

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2EmRKiRKS0_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 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 dso_local void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEEC2IS4_vEEv(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3topEv(ptr noundef nonnull align 8 dereferenceable(80)) #1 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE4pushEOS1_(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 4 dereferenceable(8)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIiiEC2IRiS2_TnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 4 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #1 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 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 #2 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { inlinehint 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 #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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 4}
!12 = !{!"_ZTSSt4pairIiiE", !10, i64 0, !10, i64 4}
!13 = !{!12, !10, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}
!16 = distinct !{!16, !15}
!17 = distinct !{!17, !15}


; 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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = 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" = type { i8 }
%"class.std::stack" = type { %"class.std::deque" }
%"class.std::deque" = type { %"class.std::_Deque_base" }
%"class.std::_Deque_base" = type { %"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl" }
%"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl" = type { %"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl_data" }
%"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator", %"struct.std::_Deque_iterator" }
%"struct.std::_Deque_iterator" = type { ptr, ptr, ptr, ptr }
%"struct.std::pair" = type { i32, i32 }

; Function Attrs: mustprogress uwtable
define dso_local void @_Z8solutionSt6vectorIiSaIiEE(ptr dead_on_unwind noalias writable sret(%"class.std::vector") align 8 %0, ptr noundef nonnull %1) local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %3 = alloca i32, align 4
  %4 = alloca %"class.std::allocator", align 1
  %5 = alloca %"class.std::stack", align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca %"struct.std::pair", align 4
  %9 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #4
  store i32 0, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %4) #4
  call void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #4
  invoke void @_ZNSt6vectorIiSaIiEEC2EmRKiRKS0_(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %9, ptr noundef nonnull align 4 dereferenceable(4) %3, ptr noundef nonnull align 1 dereferenceable(1) %4)
          to label %10 unwind label %14

10:                                               ; preds = %2
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #4
  call void @llvm.lifetime.start.p0(i64 80, ptr nonnull %5) #4
  invoke void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEEC2IS4_vEEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
          to label %11 unwind label %16

11:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %6) #4
  store i32 0, ptr %6, align 4, !tbaa !5
  %12 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #4
  %.not = icmp eq i64 %12, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph11

._crit_edge:                                      ; preds = %35, %11
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #4
  %13 = call noundef zeroext i1 @_ZNKSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
  br i1 %13, label %._crit_edge14, label %.lr.ph13

14:                                               ; preds = %2
  %15 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #4
  br label %52

16:                                               ; preds = %10
  %17 = landingpad { ptr, i32 }
          cleanup
  br label %51

.lr.ph11:                                         ; preds = %11, %35
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %7) #4
  %18 = load i32, ptr %6, align 4, !tbaa !5
  %19 = sext i32 %18 to i64
  %20 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %19) #4
  %21 = load i32, ptr %20, align 4, !tbaa !5
  store i32 %21, ptr %7, align 4, !tbaa !5
  %22 = call noundef zeroext i1 @_ZNKSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
  br i1 %22, label %.critedge, label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph11, %28
  %23 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
  %24 = getelementptr inbounds i8, ptr %23, i64 4
  %25 = load i32, ptr %24, align 4, !tbaa !9
  %26 = load i32, ptr %7, align 4, !tbaa !5
  %27 = icmp sgt i32 %25, %26
  br i1 %27, label %28, label %.critedge

28:                                               ; preds = %.lr.ph
  %29 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
  %.sroa.02.0.copyload = load i32, ptr %29, align 4
  call void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
  %30 = load i32, ptr %6, align 4, !tbaa !5
  %31 = sub nsw i32 %30, %.sroa.02.0.copyload
  %32 = sext i32 %.sroa.02.0.copyload to i64
  %33 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %32) #4
  store i32 %31, ptr %33, align 4, !tbaa !5
  %34 = call noundef zeroext i1 @_ZNKSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
  br i1 %34, label %.critedge, label %.lr.ph, !llvm.loop !11

.critedge:                                        ; preds = %.lr.ph, %28, %.lr.ph11
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %8) #4
  call void @_ZNSt4pairIiiEC2IRiS2_TnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 4 dereferenceable(8) %8, ptr noundef nonnull align 4 dereferenceable(4) %6, ptr noundef nonnull align 4 dereferenceable(4) %7)
  invoke void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE4pushEOS1_(ptr noundef nonnull align 8 dereferenceable(80) %5, ptr noundef nonnull align 4 dereferenceable(8) %8)
          to label %35 unwind label %41

35:                                               ; preds = %.critedge
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %8) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %7) #4
  %36 = load i32, ptr %6, align 4, !tbaa !5
  %37 = add nsw i32 %36, 1
  store i32 %37, ptr %6, align 4, !tbaa !5
  %38 = sext i32 %37 to i64
  %39 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #4
  %40 = icmp ugt i64 %39, %38
  br i1 %40, label %.lr.ph11, label %._crit_edge, !llvm.loop !13

41:                                               ; preds = %.critedge
  %42 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %8) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %7) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #4
  call void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %5) #4
  br label %51

.lr.ph13:                                         ; preds = %._crit_edge, %.lr.ph13
  %43 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
  %.sroa.0.0.copyload = load i32, ptr %43, align 4
  call void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
  %44 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #4
  %45 = sext i32 %.sroa.0.0.copyload to i64
  %46 = xor i64 %45, -1
  %47 = add i64 %44, %46
  %48 = trunc i64 %47 to i32
  %49 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %45) #4
  store i32 %48, ptr %49, align 4, !tbaa !5
  %50 = call noundef zeroext i1 @_ZNKSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
  br i1 %50, label %._crit_edge14, label %.lr.ph13, !llvm.loop !14

._crit_edge14:                                    ; preds = %.lr.ph13, %._crit_edge
  call void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %5) #4
  call void @llvm.lifetime.end.p0(i64 80, ptr nonnull %5) #4
  ret void

51:                                               ; preds = %41, %16
  %.pn = phi { ptr, i32 } [ %42, %41 ], [ %17, %16 ]
  call void @llvm.lifetime.end.p0(i64 80, ptr nonnull %5) #4
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  br label %52

52:                                               ; preds = %51, %14
  %.pn.pn = phi { ptr, i32 } [ %.pn, %51 ], [ %15, %14 ]
  resume { ptr, i32 } %.pn.pn
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

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

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2EmRKiRKS0_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 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 dso_local void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEEC2IS4_vEEv(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3topEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE4pushEOS1_(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 4 dereferenceable(8)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIiiEC2IRiS2_TnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 4 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #1 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 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 #2 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { inlinehint 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 = { 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, !6, i64 4}
!10 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!14 = distinct !{!14, !12}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass