; LLVM IR from ayush-tulsyan/ACM-ICPC-Handbook :: code/LCS.ll (Z6LCSallRSt6vectorIiSaIiEES2_)

; 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::set" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<std::vector<int>, std::vector<int>, std::_Identity<std::vector<int>>, std::less<std::vector<int>>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<std::vector<int>, std::vector<int>, std::_Identity<std::vector<int>>, std::less<std::vector<int>>>::_Rb_tree_impl" = type { [8 x i8], %"struct.std::_Rb_tree_header" }
%"struct.std::_Rb_tree_header" = type { %"struct.std::_Rb_tree_node_base", i64 }
%"struct.std::_Rb_tree_node_base" = type { i32, ptr, ptr, ptr }
%"class.std::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = type { %"struct.std::_Vector_base<std::vector<int>, std::allocator<std::vector<int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::vector<int>, std::allocator<std::vector<int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::vector<int>, std::allocator<std::vector<int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::vector<int>, std::allocator<std::vector<int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }

; 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) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z12backtrackallRSt6vectorIS_IiSaIiEESaIS1_EERSt3setIS1_St4lessIS1_ES2_ERS1_SA_ii(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24), i32 noundef, i32 noundef) #1

; 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 nounwind uwtable
declare dso_local void @_ZNSt3setISt6vectorIiSaIiEESt4lessIS2_ESaIS2_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(48)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt3setISt6vectorIiSaIiEESt4lessIS2_ESaIS2_EED2Ev(ptr noundef nonnull align 8 dereferenceable(48)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIS_IiSaIiEESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE6resizeEmRKi(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 4 dereferenceable(4)) #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIS_IiSaIiEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6LCSallRSt6vectorIiSaIiEES2_(ptr dead_on_unwind noalias writable sret(%"class.std::set") align 8 %0, ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef nonnull align 8 dereferenceable(24) %2) #1 personality ptr @__gxx_personality_v0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca %"class.std::vector.0", align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca ptr, align 8
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  %14 = alloca i32, align 4
  %15 = alloca i32, align 4
  %16 = alloca i32, align 4
  %17 = alloca i1, align 1
  store ptr %0, ptr %4, align 8
  store ptr %1, ptr %5, align 8, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 24, ptr %7) #4
  call void @_ZNSt6vectorIS_IiSaIiEESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %18) #4
  %20 = trunc i64 %19 to i32
  store i32 %20, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #4
  %21 = load ptr, ptr %6, align 8, !tbaa !5
  %22 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %21) #4
  %23 = trunc i64 %22 to i32
  store i32 %23, ptr %9, align 4, !tbaa !9
  %24 = load i32, ptr %8, align 4, !tbaa !9
  %25 = add nsw i32 %24, 1
  %26 = sext i32 %25 to i64
  invoke void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %26)
          to label %27 unwind label %33

27:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #4
  store i32 0, ptr %12, align 4, !tbaa !9
  br label %28

28:                                               ; preds = %45, %27
  %29 = load i32, ptr %12, align 4, !tbaa !9
  %30 = load i32, ptr %8, align 4, !tbaa !9
  %31 = icmp sle i32 %29, %30
  br i1 %31, label %37, label %32

32:                                               ; preds = %28
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #4
  br label %52

33:                                               ; preds = %3
  %34 = landingpad { ptr, i32 }
          cleanup
  %35 = extractvalue { ptr, i32 } %34, 0
  store ptr %35, ptr %10, align 8
  %36 = extractvalue { ptr, i32 } %34, 1
  store i32 %36, ptr %11, align 4
  br label %144

37:                                               ; preds = %28
  %38 = load i32, ptr %12, align 4, !tbaa !9
  %39 = sext i32 %38 to i64
  %40 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %39) #4
  %41 = load i32, ptr %9, align 4, !tbaa !9
  %42 = add nsw i32 %41, 1
  %43 = sext i32 %42 to i64
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #4
  store i32 0, ptr %13, align 4, !tbaa !9
  invoke void @_ZNSt6vectorIiSaIiEE6resizeEmRKi(ptr noundef nonnull align 8 dereferenceable(24) %40, i64 noundef %43, ptr noundef nonnull align 4 dereferenceable(4) %13)
          to label %44 unwind label %48

44:                                               ; preds = %37
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #4
  br label %45

45:                                               ; preds = %44
  %46 = load i32, ptr %12, align 4, !tbaa !9
  %47 = add nsw i32 %46, 1
  store i32 %47, ptr %12, align 4, !tbaa !9
  br label %28, !llvm.loop !11

48:                                               ; preds = %37
  %49 = landingpad { ptr, i32 }
          cleanup
  %50 = extractvalue { ptr, i32 } %49, 0
  store ptr %50, ptr %10, align 8
  %51 = extractvalue { ptr, i32 } %49, 1
  store i32 %51, ptr %11, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #4
  br label %144

52:                                               ; preds = %32
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #4
  store i32 1, ptr %14, align 4, !tbaa !9
  br label %53

53:                                               ; preds = %128, %52
  %54 = load i32, ptr %14, align 4, !tbaa !9
  %55 = load i32, ptr %8, align 4, !tbaa !9
  %56 = icmp sle i32 %54, %55
  br i1 %56, label %58, label %57

57:                                               ; preds = %53
  store i32 5, ptr %15, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #4
  br label %131

58:                                               ; preds = %53
  call void @llvm.lifetime.start.p0(i64 4, ptr %16) #4
  store i32 1, ptr %16, align 4, !tbaa !9
  br label %59

59:                                               ; preds = %124, %58
  %60 = load i32, ptr %16, align 4, !tbaa !9
  %61 = load i32, ptr %9, align 4, !tbaa !9
  %62 = icmp sle i32 %60, %61
  br i1 %62, label %64, label %63

63:                                               ; preds = %59
  store i32 8, ptr %15, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %16) #4
  br label %127

64:                                               ; preds = %59
  %65 = load ptr, ptr %5, align 8, !tbaa !5
  %66 = load i32, ptr %14, align 4, !tbaa !9
  %67 = sub nsw i32 %66, 1
  %68 = sext i32 %67 to i64
  %69 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %65, i64 noundef %68) #4
  %70 = load i32, ptr %69, align 4, !tbaa !9
  %71 = load ptr, ptr %6, align 8, !tbaa !5
  %72 = load i32, ptr %16, align 4, !tbaa !9
  %73 = sub nsw i32 %72, 1
  %74 = sext i32 %73 to i64
  %75 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %71, i64 noundef %74) #4
  %76 = load i32, ptr %75, align 4, !tbaa !9
  %77 = icmp eq i32 %70, %76
  br i1 %77, label %78, label %95

78:                                               ; preds = %64
  %79 = load i32, ptr %14, align 4, !tbaa !9
  %80 = sub nsw i32 %79, 1
  %81 = sext i32 %80 to i64
  %82 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %81) #4
  %83 = load i32, ptr %16, align 4, !tbaa !9
  %84 = sub nsw i32 %83, 1
  %85 = sext i32 %84 to i64
  %86 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %82, i64 noundef %85) #4
  %87 = load i32, ptr %86, align 4, !tbaa !9
  %88 = add nsw i32 %87, 1
  %89 = load i32, ptr %14, align 4, !tbaa !9
  %90 = sext i32 %89 to i64
  %91 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %90) #4
  %92 = load i32, ptr %16, align 4, !tbaa !9
  %93 = sext i32 %92 to i64
  %94 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %91, i64 noundef %93) #4
  store i32 %88, ptr %94, align 4, !tbaa !9
  br label %123

95:                                               ; preds = %64
  %96 = load i32, ptr %14, align 4, !tbaa !9
  %97 = sub nsw i32 %96, 1
  %98 = sext i32 %97 to i64
  %99 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %98) #4
  %100 = load i32, ptr %16, align 4, !tbaa !9
  %101 = sext i32 %100 to i64
  %102 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %99, i64 noundef %101) #4
  %103 = load i32, ptr %14, align 4, !tbaa !9
  %104 = sext i32 %103 to i64
  %105 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %104) #4
  %106 = load i32, ptr %16, align 4, !tbaa !9
  %107 = sub nsw i32 %106, 1
  %108 = sext i32 %107 to i64
  %109 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %105, i64 noundef %108) #4
  %110 = invoke noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %102, ptr noundef nonnull align 4 dereferenceable(4) %109)
          to label %111 unwind label %119

111:                                              ; preds = %95
  %112 = load i32, ptr %110, align 4, !tbaa !9
  %113 = load i32, ptr %14, align 4, !tbaa !9
  %114 = sext i32 %113 to i64
  %115 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %114) #4
  %116 = load i32, ptr %16, align 4, !tbaa !9
  %117 = sext i32 %116 to i64
  %118 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %115, i64 noundef %117) #4
  store i32 %112, ptr %118, align 4, !tbaa !9
  br label %123

119:                                              ; preds = %95
  %120 = landingpad { ptr, i32 }
          cleanup
  %121 = extractvalue { ptr, i32 } %120, 0
  store ptr %121, ptr %10, align 8
  %122 = extractvalue { ptr, i32 } %120, 1
  store i32 %122, ptr %11, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %16) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #4
  br label %144

123:                                              ; preds = %111, %78
  br label %124

124:                                              ; preds = %123
  %125 = load i32, ptr %16, align 4, !tbaa !9
  %126 = add nsw i32 %125, 1
  store i32 %126, ptr %16, align 4, !tbaa !9
  br label %59, !llvm.loop !13

127:                                              ; preds = %63
  br label %128

128:                                              ; preds = %127
  %129 = load i32, ptr %14, align 4, !tbaa !9
  %130 = add nsw i32 %129, 1
  store i32 %130, ptr %14, align 4, !tbaa !9
  br label %53, !llvm.loop !14

131:                                              ; preds = %57
  store i1 false, ptr %17, align 1
  call void @_ZNSt3setISt6vectorIiSaIiEESt4lessIS2_ESaIS2_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(48) %0) #4
  %132 = load ptr, ptr %5, align 8, !tbaa !5
  %133 = load ptr, ptr %6, align 8, !tbaa !5
  %134 = load i32, ptr %8, align 4, !tbaa !9
  %135 = load i32, ptr %9, align 4, !tbaa !9
  invoke void @_Z12backtrackallRSt6vectorIS_IiSaIiEESaIS1_EERSt3setIS1_St4lessIS1_ES2_ERS1_SA_ii(ptr noundef nonnull align 8 dereferenceable(24) %7, ptr noundef nonnull align 8 dereferenceable(48) %0, ptr noundef nonnull align 8 dereferenceable(24) %132, ptr noundef nonnull align 8 dereferenceable(24) %133, i32 noundef %134, i32 noundef %135)
          to label %136 unwind label %138

136:                                              ; preds = %131
  store i1 true, ptr %17, align 1
  store i32 1, ptr %15, align 4
  %137 = load i1, ptr %17, align 1
  br i1 %137, label %143, label %142

138:                                              ; preds = %131
  %139 = landingpad { ptr, i32 }
          cleanup
  %140 = extractvalue { ptr, i32 } %139, 0
  store ptr %140, ptr %10, align 8
  %141 = extractvalue { ptr, i32 } %139, 1
  store i32 %141, ptr %11, align 4
  call void @_ZNSt3setISt6vectorIiSaIiEESt4lessIS2_ESaIS2_EED2Ev(ptr noundef nonnull align 8 dereferenceable(48) %0) #4
  br label %144

142:                                              ; preds = %136
  call void @_ZNSt3setISt6vectorIiSaIiEESt4lessIS2_ESaIS2_EED2Ev(ptr noundef nonnull align 8 dereferenceable(48) %0) #4
  br label %143

143:                                              ; preds = %142, %136
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  call void @_ZNSt6vectorIS_IiSaIiEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #4
  call void @llvm.lifetime.end.p0(i64 24, ptr %7) #4
  ret void

144:                                              ; preds = %138, %119, %48, %33
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  call void @_ZNSt6vectorIS_IiSaIiEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #4
  call void @llvm.lifetime.end.p0(i64 24, ptr %7) #4
  br label %145

145:                                              ; preds = %144
  %146 = load ptr, ptr %10, align 8
  %147 = load i32, ptr %11, align 4
  %148 = insertvalue { ptr, i32 } poison, ptr %146, 0
  %149 = insertvalue { ptr, i32 } %148, i32 %147, 1
  resume { ptr, i32 } %149
}

attributes #0 = { 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 #1 = { 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 #2 = { 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 = !{!"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 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!14 = distinct !{!14, !12}


; 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::set" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<std::vector<int>, std::vector<int>, std::_Identity<std::vector<int>>, std::less<std::vector<int>>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<std::vector<int>, std::vector<int>, std::_Identity<std::vector<int>>, std::less<std::vector<int>>>::_Rb_tree_impl" = type { [8 x i8], %"struct.std::_Rb_tree_header" }
%"struct.std::_Rb_tree_header" = type { %"struct.std::_Rb_tree_node_base", i64 }
%"struct.std::_Rb_tree_node_base" = type { i32, ptr, ptr, ptr }
%"class.std::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = type { %"struct.std::_Vector_base<std::vector<int>, std::allocator<std::vector<int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::vector<int>, std::allocator<std::vector<int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::vector<int>, std::allocator<std::vector<int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::vector<int>, std::allocator<std::vector<int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }

; 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 #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z12backtrackallRSt6vectorIS_IiSaIiEESaIS1_EERSt3setIS1_St4lessIS1_ES2_ERS1_SA_ii(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24), i32 noundef, i32 noundef) local_unnamed_addr #1

; 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 nounwind uwtable
declare dso_local void @_ZNSt3setISt6vectorIiSaIiEESt4lessIS2_ESaIS2_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(48)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt3setISt6vectorIiSaIiEESt4lessIS2_ESaIS2_EED2Ev(ptr noundef nonnull align 8 dereferenceable(48)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIS_IiSaIiEESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE6resizeEmRKi(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIS_IiSaIiEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6LCSallRSt6vectorIiSaIiEES2_(ptr dead_on_unwind noalias writable sret(%"class.std::set") align 8 %0, ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef nonnull align 8 dereferenceable(24) %2) local_unnamed_addr #1 personality ptr @__gxx_personality_v0 {
  %4 = alloca %"class.std::vector.0", align 8
  %5 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %4) #4
  call void @_ZNSt6vectorIS_IiSaIiEESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #4
  %6 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #4
  %7 = trunc i64 %6 to i32
  %8 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %2) #4
  %9 = trunc i64 %8 to i32
  %10 = shl i64 %6, 32
  %sext = add i64 %10, 4294967296
  %11 = ashr exact i64 %sext, 32
  invoke void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %11)
          to label %.preheader44 unwind label %17

.preheader44:                                     ; preds = %3
  %.not45 = icmp slt i32 %7, 0
  br i1 %.not45, label %._crit_edge52, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader44
  %12 = shl i64 %8, 32
  %sext41 = add i64 %12, 4294967296
  %13 = ashr exact i64 %sext41, 32
  %14 = add nuw nsw i64 %6, 1
  %wide.trip.count = and i64 %14, 4294967295
  br label %19

.preheader43:                                     ; preds = %21
  %.not3950 = icmp eq i32 %7, 0
  %.not4047 = icmp slt i32 %9, 1
  %or.cond = or i1 %.not3950, %.not4047
  br i1 %or.cond, label %._crit_edge52, label %.preheader.preheader

.preheader.preheader:                             ; preds = %.preheader43
  %15 = add nuw nsw i64 %8, 1
  %16 = add nuw nsw i64 %6, 1
  %wide.trip.count63 = and i64 %16, 4294967295
  %wide.trip.count58 = and i64 %15, 4294967295
  br label %.preheader

17:                                               ; preds = %3
  %18 = landingpad { ptr, i32 }
          cleanup
  br label %49

19:                                               ; preds = %.lr.ph, %21
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %21 ]
  %20 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %indvars.iv) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #4
  store i32 0, ptr %5, align 4, !tbaa !5
  invoke void @_ZNSt6vectorIiSaIiEE6resizeEmRKi(ptr noundef nonnull align 8 dereferenceable(24) %20, i64 noundef %13, ptr noundef nonnull align 4 dereferenceable(4) %5)
          to label %21 unwind label %22

21:                                               ; preds = %19
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #4
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %.preheader43, label %19, !llvm.loop !9

22:                                               ; preds = %19
  %23 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #4
  br label %49

.preheader:                                       ; preds = %.preheader.preheader, %._crit_edge
  %indvars.iv60 = phi i64 [ 1, %.preheader.preheader ], [ %indvars.iv.next61, %._crit_edge ]
  %24 = add nsw i64 %indvars.iv60, -1
  br label %25

._crit_edge52:                                    ; preds = %._crit_edge, %.preheader44, %.preheader43
  call void @_ZNSt3setISt6vectorIiSaIiEESt4lessIS2_ESaIS2_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(48) %0) #4
  invoke void @_Z12backtrackallRSt6vectorIS_IiSaIiEESaIS1_EERSt3setIS1_St4lessIS1_ES2_ERS1_SA_ii(ptr noundef nonnull align 8 dereferenceable(24) %4, ptr noundef nonnull align 8 dereferenceable(48) %0, ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef nonnull align 8 dereferenceable(24) %2, i32 noundef %7, i32 noundef %9)
          to label %48 unwind label %46

._crit_edge:                                      ; preds = %43
  %indvars.iv.next61 = add nuw nsw i64 %indvars.iv60, 1
  %exitcond64.not = icmp eq i64 %indvars.iv.next61, %wide.trip.count63
  br i1 %exitcond64.not, label %._crit_edge52, label %.preheader, !llvm.loop !11

25:                                               ; preds = %.preheader, %43
  %indvars.iv55 = phi i64 [ 1, %.preheader ], [ %indvars.iv.next56, %43 ]
  %26 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %24) #4
  %27 = load i32, ptr %26, align 4, !tbaa !5
  %28 = add nsw i64 %indvars.iv55, -1
  %29 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %28) #4
  %30 = load i32, ptr %29, align 4, !tbaa !5
  %31 = icmp eq i32 %27, %30
  %32 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %24) #4
  br i1 %31, label %33, label %37

33:                                               ; preds = %25
  %34 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %32, i64 noundef %28) #4
  %35 = load i32, ptr %34, align 4, !tbaa !5
  %36 = add nsw i32 %35, 1
  br label %43

37:                                               ; preds = %25
  %38 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %32, i64 noundef %indvars.iv55) #4
  %39 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %indvars.iv60) #4
  %40 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %39, i64 noundef %28) #4
  %41 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %38, ptr noundef nonnull align 4 dereferenceable(4) %40)
  %42 = load i32, ptr %41, align 4, !tbaa !5
  br label %43

43:                                               ; preds = %33, %37
  %.sink = phi i32 [ %36, %33 ], [ %42, %37 ]
  %44 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %indvars.iv60) #4
  %45 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %44, i64 noundef %indvars.iv55) #4
  store i32 %.sink, ptr %45, align 4, !tbaa !5
  %indvars.iv.next56 = add nuw nsw i64 %indvars.iv55, 1
  %exitcond59.not = icmp eq i64 %indvars.iv.next56, %wide.trip.count58
  br i1 %exitcond59.not, label %._crit_edge, label %25, !llvm.loop !12

46:                                               ; preds = %._crit_edge52
  %47 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt3setISt6vectorIiSaIiEESt4lessIS2_ESaIS2_EED2Ev(ptr noundef nonnull align 8 dereferenceable(48) %0) #4
  br label %49

48:                                               ; preds = %._crit_edge52
  call void @_ZNSt6vectorIS_IiSaIiEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #4
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %4) #4
  ret void

49:                                               ; preds = %46, %22, %17
  %.pn = phi { ptr, i32 } [ %23, %22 ], [ %47, %46 ], [ %18, %17 ]
  call void @_ZNSt6vectorIS_IiSaIiEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #4
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %4) #4
  resume { ptr, i32 } %.pn
}

attributes #0 = { 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 #1 = { 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 #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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = distinct !{!12, !10}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyCFGPass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass