; LLVM IR from xirc/cp-algorithm :: codeforces/1100E/main.ll (Z5solveRSt6vectorIiSaIiEE)

; 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<edge, std::allocator<edge>>::_Vector_impl" }
%"struct.std::_Vector_base<edge, std::allocator<edge>>::_Vector_impl" = type { %"struct.std::_Vector_base<edge, std::allocator<edge>>::_Vector_impl_data" }
%"struct.std::_Vector_base<edge, std::allocator<edge>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::vector.5" = type { %"struct.std::_Vector_base.6" }
%"struct.std::_Vector_base.6" = 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.7" = type { i8 }
%struct.edge = type { i32, i32, i32 }

@N = external dso_local global i32, align 4
@M = external dso_local global i32, align 4
@edges = external dso_local global %"class.std::vector", align 8

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5tsorti(ptr dead_on_unwind noalias writable sret(%"class.std::vector.5") align 8, i32 noundef) #0

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

declare i32 @__gxx_personality_v0(...)

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

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(12) ptr @_ZNSt6vectorI4edgeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 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) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4)) #0 align 2

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

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z9binsearchv() #0

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z5solveRSt6vectorIiSaIiEE(ptr noundef nonnull align 8 dereferenceable(24) %0) #0 personality ptr @__gxx_personality_v0 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca %"class.std::vector.5", align 8
  %5 = alloca %"class.std::vector.5", align 8
  %6 = alloca i32, align 4
  %7 = alloca %"class.std::allocator.7", align 1
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  %14 = call noundef i32 @_Z9binsearchv()
  store i32 %14, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 24, ptr %4) #3
  %15 = load i32, ptr %3, align 4, !tbaa !9
  call void @_Z5tsorti(ptr dead_on_unwind writable sret(%"class.std::vector.5") align 8 %4, i32 noundef %15)
  call void @llvm.lifetime.start.p0(i64 24, ptr %5) #3
  %16 = load i32, ptr @N, align 4, !tbaa !9
  %17 = sext i32 %16 to i64
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  store i32 0, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 1, ptr %7) #3
  call void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %7) #3
  invoke void @_ZNSt6vectorIiSaIiEEC2EmRKiRKS0_(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %17, ptr noundef nonnull align 4 dereferenceable(4) %6, ptr noundef nonnull align 1 dereferenceable(1) %7)
          to label %18 unwind label %24

18:                                               ; preds = %1
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %7) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  store i32 0, ptr %10, align 4, !tbaa !9
  br label %19

19:                                               ; preds = %36, %18
  %20 = load i32, ptr %10, align 4, !tbaa !9
  %21 = load i32, ptr @N, align 4, !tbaa !9
  %22 = icmp slt i32 %20, %21
  br i1 %22, label %28, label %23

23:                                               ; preds = %19
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  br label %39

24:                                               ; preds = %1
  %25 = landingpad { ptr, i32 }
          cleanup
  %26 = extractvalue { ptr, i32 } %25, 0
  store ptr %26, ptr %8, align 8
  %27 = extractvalue { ptr, i32 } %25, 1
  store i32 %27, ptr %9, align 4
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %7) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  br label %85

28:                                               ; preds = %19
  %29 = load i32, ptr %10, align 4, !tbaa !9
  %30 = load i32, ptr %10, align 4, !tbaa !9
  %31 = sext i32 %30 to i64
  %32 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %31) #3
  %33 = load i32, ptr %32, align 4, !tbaa !9
  %34 = sext i32 %33 to i64
  %35 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %34) #3
  store i32 %29, ptr %35, align 4, !tbaa !9
  br label %36

36:                                               ; preds = %28
  %37 = load i32, ptr %10, align 4, !tbaa !9
  %38 = add nsw i32 %37, 1
  store i32 %38, ptr %10, align 4, !tbaa !9
  br label %19, !llvm.loop !11

39:                                               ; preds = %23
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #3
  store i32 0, ptr %11, align 4, !tbaa !9
  br label %40

40:                                               ; preds = %80, %39
  %41 = load i32, ptr %11, align 4, !tbaa !9
  %42 = load i32, ptr @M, align 4, !tbaa !9
  %43 = icmp slt i32 %41, %42
  br i1 %43, label %45, label %44

44:                                               ; preds = %40
  store i32 5, ptr %12, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #3
  br label %83

45:                                               ; preds = %40
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #3
  %46 = load i32, ptr %11, align 4, !tbaa !9
  %47 = sext i32 %46 to i64
  %48 = call noundef nonnull align 4 dereferenceable(12) ptr @_ZNSt6vectorI4edgeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @edges, i64 noundef %47) #3
  store ptr %48, ptr %13, align 8, !tbaa !5
  %49 = load ptr, ptr %13, align 8, !tbaa !5
  %50 = getelementptr inbounds %struct.edge, ptr %49, i32 0, i32 2
  %51 = load i32, ptr %50, align 4, !tbaa !13
  %52 = load i32, ptr %3, align 4, !tbaa !9
  %53 = icmp sgt i32 %51, %52
  br i1 %53, label %54, label %55

54:                                               ; preds = %45
  store i32 7, ptr %12, align 4
  br label %77

55:                                               ; preds = %45
  %56 = load ptr, ptr %13, align 8, !tbaa !5
  %57 = getelementptr inbounds %struct.edge, ptr %56, i32 0, i32 0
  %58 = load i32, ptr %57, align 4, !tbaa !15
  %59 = sext i32 %58 to i64
  %60 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %59) #3
  %61 = load i32, ptr %60, align 4, !tbaa !9
  %62 = load ptr, ptr %13, align 8, !tbaa !5
  %63 = getelementptr inbounds %struct.edge, ptr %62, i32 0, i32 1
  %64 = load i32, ptr %63, align 4, !tbaa !16
  %65 = sext i32 %64 to i64
  %66 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %65) #3
  %67 = load i32, ptr %66, align 4, !tbaa !9
  %68 = icmp sgt i32 %61, %67
  br i1 %68, label %69, label %76

69:                                               ; preds = %55
  %70 = load ptr, ptr %2, align 8, !tbaa !5
  invoke void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %70, ptr noundef nonnull align 4 dereferenceable(4) %11)
          to label %71 unwind label %72

71:                                               ; preds = %69
  br label %76

72:                                               ; preds = %69
  %73 = landingpad { ptr, i32 }
          cleanup
  %74 = extractvalue { ptr, i32 } %73, 0
  store ptr %74, ptr %8, align 8
  %75 = extractvalue { ptr, i32 } %73, 1
  store i32 %75, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #3
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #3
  br label %85

76:                                               ; preds = %71, %55
  store i32 0, ptr %12, align 4
  br label %77

77:                                               ; preds = %76, %54
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #3
  %78 = load i32, ptr %12, align 4
  switch i32 %78, label %91 [
    i32 0, label %79
    i32 7, label %80
  ]

79:                                               ; preds = %77
  br label %80

80:                                               ; preds = %79, %77
  %81 = load i32, ptr %11, align 4, !tbaa !9
  %82 = add nsw i32 %81, 1
  store i32 %82, ptr %11, align 4, !tbaa !9
  br label %40, !llvm.loop !17

83:                                               ; preds = %44
  %84 = load i32, ptr %3, align 4, !tbaa !9
  store i32 1, ptr %12, align 4
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr %5) #3
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  ret i32 %84

85:                                               ; preds = %72, %24
  call void @llvm.lifetime.end.p0(i64 24, ptr %5) #3
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  br label %86

86:                                               ; preds = %85
  %87 = load ptr, ptr %8, align 8
  %88 = load i32, ptr %9, align 4
  %89 = insertvalue { ptr, i32 } poison, ptr %87, 0
  %90 = insertvalue { ptr, i32 } %89, i32 %88, 1
  resume { ptr, i32 } %90

91:                                               ; preds = %77
  unreachable
}

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

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { 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 = !{!14, !10, i64 8}
!14 = !{!"_ZTS4edge", !10, i64 0, !10, i64 4, !10, i64 8}
!15 = !{!14, !10, i64 0}
!16 = !{!14, !10, i64 4}
!17 = distinct !{!17, !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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<edge, std::allocator<edge>>::_Vector_impl" }
%"struct.std::_Vector_base<edge, std::allocator<edge>>::_Vector_impl" = type { %"struct.std::_Vector_base<edge, std::allocator<edge>>::_Vector_impl_data" }
%"struct.std::_Vector_base<edge, std::allocator<edge>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::vector.5" = type { %"struct.std::_Vector_base.6" }
%"struct.std::_Vector_base.6" = 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.7" = type { i8 }

@N = external dso_local local_unnamed_addr global i32, align 4
@M = external dso_local local_unnamed_addr global i32, align 4
@edges = external dso_local global %"class.std::vector", align 8

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5tsorti(ptr dead_on_unwind noalias writable sret(%"class.std::vector.5") align 8, i32 noundef) local_unnamed_addr #0

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

declare i32 @__gxx_personality_v0(...)

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

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(12) ptr @_ZNSt6vectorI4edgeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 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 #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #0 align 2

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

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z9binsearchv() local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z5solveRSt6vectorIiSaIiEE(ptr noundef nonnull align 8 dereferenceable(24) %0) local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %2 = alloca %"class.std::vector.5", align 8
  %3 = alloca %"class.std::vector.5", align 8
  %4 = alloca i32, align 4
  %5 = alloca %"class.std::allocator.7", align 1
  %6 = alloca i32, align 4
  %7 = tail call noundef i32 @_Z9binsearchv()
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %2) #3
  call void @_Z5tsorti(ptr dead_on_unwind nonnull writable sret(%"class.std::vector.5") align 8 %2, i32 noundef %7)
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %3) #3
  %8 = load i32, ptr @N, align 4, !tbaa !5
  %9 = sext i32 %8 to i64
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #3
  store i32 0, ptr %4, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %5) #3
  call void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #3
  invoke void @_ZNSt6vectorIiSaIiEEC2EmRKiRKS0_(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %9, ptr noundef nonnull align 4 dereferenceable(4) %4, ptr noundef nonnull align 1 dereferenceable(1) %5)
          to label %10 unwind label %15

10:                                               ; preds = %1
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %5) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #3
  %11 = load i32, ptr @N, align 4, !tbaa !5
  %12 = icmp sgt i32 %11, 0
  br i1 %12, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %10
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %6) #3
  store i32 0, ptr %6, align 4, !tbaa !5
  %13 = load i32, ptr @M, align 4, !tbaa !5
  %14 = icmp sgt i32 %13, 0
  br i1 %14, label %.lr.ph19, label %._crit_edge20

15:                                               ; preds = %1
  %16 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %5) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #3
  br label %49

.lr.ph:                                           ; preds = %10, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %10 ]
  %17 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %indvars.iv) #3
  %18 = load i32, ptr %17, 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) %3, i64 noundef %19) #3
  %21 = trunc nuw nsw i64 %indvars.iv to i32
  store i32 %21, ptr %20, align 4, !tbaa !5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %22 = load i32, ptr @N, align 4, !tbaa !5
  %23 = sext i32 %22 to i64
  %24 = icmp slt i64 %indvars.iv.next, %23
  br i1 %24, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge20:                                    ; preds = %44, %._crit_edge
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #3
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #3
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %2) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %2) #3
  ret i32 %7

.lr.ph19:                                         ; preds = %._crit_edge, %44
  %storemerge17 = phi i32 [ %46, %44 ], [ 0, %._crit_edge ]
  %25 = sext i32 %storemerge17 to i64
  %26 = call noundef nonnull align 4 dereferenceable(12) ptr @_ZNSt6vectorI4edgeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @edges, i64 noundef %25) #3
  %27 = getelementptr inbounds i8, ptr %26, i64 8
  %28 = load i32, ptr %27, align 4, !tbaa !11
  %29 = icmp sgt i32 %28, %7
  br i1 %29, label %44, label %30

30:                                               ; preds = %.lr.ph19
  %31 = load i32, ptr %26, align 4, !tbaa !13
  %32 = sext i32 %31 to i64
  %33 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %32) #3
  %34 = load i32, ptr %33, align 4, !tbaa !5
  %35 = getelementptr inbounds i8, ptr %26, i64 4
  %36 = load i32, ptr %35, align 4, !tbaa !14
  %37 = sext i32 %36 to i64
  %38 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %37) #3
  %39 = load i32, ptr %38, align 4, !tbaa !5
  %40 = icmp sgt i32 %34, %39
  br i1 %40, label %41, label %44

41:                                               ; preds = %30
  invoke void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 4 dereferenceable(4) %6)
          to label %44 unwind label %42

42:                                               ; preds = %41
  %43 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #3
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #3
  br label %49

44:                                               ; preds = %30, %41, %.lr.ph19
  %45 = load i32, ptr %6, align 4, !tbaa !5
  %46 = add nsw i32 %45, 1
  store i32 %46, ptr %6, align 4, !tbaa !5
  %47 = load i32, ptr @M, align 4, !tbaa !5
  %48 = icmp slt i32 %46, %47
  br i1 %48, label %.lr.ph19, label %._crit_edge20, !llvm.loop !15

49:                                               ; preds = %42, %15
  %.pn = phi { ptr, i32 } [ %43, %42 ], [ %16, %15 ]
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #3
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %2) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %2) #3
  resume { ptr, i32 } %.pn
}

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

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { 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 = !{!12, !6, i64 8}
!12 = !{!"_ZTS4edge", !6, i64 0, !6, i64 4, !6, i64 8}
!13 = !{!12, !6, i64 0}
!14 = !{!12, !6, i64 4}
!15 = distinct !{!15, !10}


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