; LLVM IR from DavePearce/DynamicTopologicalSort :: src/graphgen (printgraph)

; 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_istream" = type { ptr, i64, %"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_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::pair<unsigned int, unsigned int>, std::allocator<std::pair<unsigned int, unsigned int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<unsigned int, unsigned int>, std::allocator<std::pair<unsigned int, unsigned int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<unsigned int, unsigned int>, std::allocator<std::pair<unsigned int, unsigned int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<unsigned int, unsigned int>, std::allocator<std::pair<unsigned int, unsigned int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"struct.std::pair" = type { i32, i32 }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z13read_edgelistRSiRSt6vectorISt4pairIjjESaIS2_EE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(24)) #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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main(i32 noundef %0, ptr noundef %1) #2 personality ptr @__gxx_personality_v0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca %"class.std::vector", align 8
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  store i32 0, ptr %3, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #7
  call void @llvm.lifetime.start.p0(i64 24, ptr %7) #7
  call void @_ZNSt6vectorISt4pairIjjESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #7
  %11 = invoke noundef i32 @_Z13read_edgelistRSiRSt6vectorISt4pairIjjESaIS2_EE(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(24) %7)
          to label %12 unwind label %33

12:                                               ; preds = %2
  store i32 %11, ptr %6, align 4, !tbaa !5
  %13 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.1)
          to label %14 unwind label %33

14:                                               ; preds = %12
  %15 = load i32, ptr %6, align 4, !tbaa !5
  %16 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %13, i32 noundef %15)
          to label %17 unwind label %33

17:                                               ; preds = %14
  %18 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %16, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %19 unwind label %33

19:                                               ; preds = %17
  %20 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.2)
          to label %21 unwind label %33

21:                                               ; preds = %19
  %22 = call noundef i64 @_ZNKSt6vectorISt4pairIjjESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %7) #7
  %23 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEm(ptr noundef nonnull align 8 dereferenceable(8) %20, i64 noundef %22)
          to label %24 unwind label %33

24:                                               ; preds = %21
  %25 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %23, ptr noundef @.str.3)
          to label %26 unwind label %33

26:                                               ; preds = %24
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #7
  store i32 0, ptr %10, align 4, !tbaa !5
  br label %27

27:                                               ; preds = %64, %26
  %28 = load i32, ptr %10, align 4, !tbaa !5
  %29 = sext i32 %28 to i64
  %30 = call noundef i64 @_ZNKSt6vectorISt4pairIjjESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %7) #7
  %31 = icmp ne i64 %29, %30
  br i1 %31, label %37, label %32

32:                                               ; preds = %27
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #7
  br label %67

33:                                               ; preds = %69, %67, %24, %21, %19, %17, %14, %12, %2
  %34 = landingpad { ptr, i32 }
          cleanup
  %35 = extractvalue { ptr, i32 } %34, 0
  store ptr %35, ptr %8, align 8
  %36 = extractvalue { ptr, i32 } %34, 1
  store i32 %36, ptr %9, align 4
  br label %72

37:                                               ; preds = %27
  %38 = load i32, ptr %10, align 4, !tbaa !5
  %39 = icmp ne i32 %38, 0
  br i1 %39, label %40, label %47

40:                                               ; preds = %37
  %41 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.4)
          to label %42 unwind label %43

42:                                               ; preds = %40
  br label %47

43:                                               ; preds = %56, %54, %47, %40
  %44 = landingpad { ptr, i32 }
          cleanup
  %45 = extractvalue { ptr, i32 } %44, 0
  store ptr %45, ptr %8, align 8
  %46 = extractvalue { ptr, i32 } %44, 1
  store i32 %46, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #7
  br label %72

47:                                               ; preds = %42, %37
  %48 = load i32, ptr %10, align 4, !tbaa !5
  %49 = sext i32 %48 to i64
  %50 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIjjESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %49) #7
  %51 = getelementptr inbounds %"struct.std::pair", ptr %50, i32 0, i32 0
  %52 = load i32, ptr %51, align 4, !tbaa !11
  %53 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEj(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %52)
          to label %54 unwind label %43

54:                                               ; preds = %47
  %55 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %53, ptr noundef @.str.5)
          to label %56 unwind label %43

56:                                               ; preds = %54
  %57 = load i32, ptr %10, align 4, !tbaa !5
  %58 = sext i32 %57 to i64
  %59 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIjjESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %58) #7
  %60 = getelementptr inbounds %"struct.std::pair", ptr %59, i32 0, i32 1
  %61 = load i32, ptr %60, align 4, !tbaa !13
  %62 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEj(ptr noundef nonnull align 8 dereferenceable(8) %55, i32 noundef %61)
          to label %63 unwind label %43

63:                                               ; preds = %56
  br label %64

64:                                               ; preds = %63
  %65 = load i32, ptr %10, align 4, !tbaa !5
  %66 = add nsw i32 %65, 1
  store i32 %66, ptr %10, align 4, !tbaa !5
  br label %27, !llvm.loop !14

67:                                               ; preds = %32
  %68 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.6)
          to label %69 unwind label %33

69:                                               ; preds = %67
  %70 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %68, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %71 unwind label %33

71:                                               ; preds = %69
  call void @exit(i32 noundef 0) #8
  unreachable

72:                                               ; preds = %43, %33
  call void @_ZNSt6vectorISt4pairIjjESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #7
  call void @llvm.lifetime.end.p0(i64 24, ptr %7) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #7
  br label %73

73:                                               ; preds = %72
  %74 = load ptr, ptr %8, align 8
  %75 = load i32, ptr %9, align 4
  %76 = insertvalue { ptr, i32 } poison, ptr %74, 0
  %77 = insertvalue { ptr, i32 } %76, i32 %75, 1
  resume { ptr, i32 } %77
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIjjESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #4

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #5

; 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 noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEm(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorISt4pairIjjESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEj(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIjjESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #3 align 2

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) #6

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIjjESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #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 = { "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 = { noreturn 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 #7 = { nounwind }
attributes #8 = { noreturn nounwind }

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

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !6, i64 0}
!12 = !{!"_ZTSSt4pairIjjE", !6, i64 0, !6, i64 4}
!13 = !{!12, !6, i64 4}
!14 = distinct !{!14, !15}
!15 = !{!"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_istream" = type { ptr, i64, %"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_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::pair<unsigned int, unsigned int>, std::allocator<std::pair<unsigned int, unsigned int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<unsigned int, unsigned int>, std::allocator<std::pair<unsigned int, unsigned int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<unsigned int, unsigned int>, std::allocator<std::pair<unsigned int, unsigned int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<unsigned int, unsigned int>, std::allocator<std::pair<unsigned int, unsigned int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z13read_edgelistRSiRSt6vectorISt4pairIjjESaIS2_EE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(24)) 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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress norecurse noreturn uwtable
define dso_local noundef i32 @main(i32 noundef %0, ptr nocapture noundef readnone %1) local_unnamed_addr #2 personality ptr @__gxx_personality_v0 {
  %3 = alloca %"class.std::vector", align 8
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %3) #7
  call void @_ZNSt6vectorISt4pairIjjESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #7
  %4 = invoke noundef i32 @_Z13read_edgelistRSiRSt6vectorISt4pairIjjESaIS2_EE(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(24) %3)
          to label %5 unwind label %32

5:                                                ; preds = %2
  %6 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.1)
          to label %7 unwind label %32

7:                                                ; preds = %5
  %8 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %6, i32 noundef %4)
          to label %9 unwind label %32

9:                                                ; preds = %7
  %10 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %8, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %11 unwind label %32

11:                                               ; preds = %9
  %12 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.2)
          to label %13 unwind label %32

13:                                               ; preds = %11
  %14 = call noundef i64 @_ZNKSt6vectorISt4pairIjjESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #7
  %15 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEm(ptr noundef nonnull align 8 dereferenceable(8) %12, i64 noundef %14)
          to label %16 unwind label %32

16:                                               ; preds = %13
  %17 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %15, ptr noundef nonnull @.str.3)
          to label %.preheader unwind label %32

.preheader:                                       ; preds = %16
  %18 = call noundef i64 @_ZNKSt6vectorISt4pairIjjESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #7
  %.not12 = icmp eq i64 %18, 0
  br i1 %.not12, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %.preheader
  %19 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIjjESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef 0) #7
  %20 = load i32, ptr %19, align 4, !tbaa !5
  %21 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEj(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %20)
          to label %22 unwind label %.loopexit.split-lp

22:                                               ; preds = %.lr.ph.preheader
  %23 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %21, ptr noundef nonnull @.str.5)
          to label %24 unwind label %.loopexit.split-lp

24:                                               ; preds = %22
  %25 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIjjESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef 0) #7
  %26 = getelementptr inbounds i8, ptr %25, i64 4
  %27 = load i32, ptr %26, align 4, !tbaa !10
  %28 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEj(ptr noundef nonnull align 8 dereferenceable(8) %23, i32 noundef %27)
          to label %29 unwind label %.loopexit.split-lp

29:                                               ; preds = %24
  %30 = call noundef i64 @_ZNKSt6vectorISt4pairIjjESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #7
  %.not.peel = icmp eq i64 %30, 1
  br i1 %.not.peel, label %._crit_edge, label %.lr.ph.peel.next

._crit_edge:                                      ; preds = %46, %29, %.preheader
  %31 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.6)
          to label %48 unwind label %32

32:                                               ; preds = %48, %._crit_edge, %16, %13, %11, %9, %7, %5, %2
  %33 = landingpad { ptr, i32 }
          cleanup
  br label %51

.lr.ph.peel.next:                                 ; preds = %29, %46
  %indvars.iv = phi i64 [ %indvars.iv.next, %46 ], [ 1, %29 ]
  %34 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.4)
          to label %35 unwind label %.loopexit

.loopexit:                                        ; preds = %.lr.ph.peel.next, %35, %39, %41
  %lpad.loopexit = landingpad { ptr, i32 }
          cleanup
  br label %51

.loopexit.split-lp:                               ; preds = %.lr.ph.preheader, %22, %24
  %lpad.loopexit.split-lp = landingpad { ptr, i32 }
          cleanup
  br label %51

35:                                               ; preds = %.lr.ph.peel.next
  %36 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIjjESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %indvars.iv) #7
  %37 = load i32, ptr %36, align 4, !tbaa !5
  %38 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEj(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %37)
          to label %39 unwind label %.loopexit

39:                                               ; preds = %35
  %40 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %38, ptr noundef nonnull @.str.5)
          to label %41 unwind label %.loopexit

41:                                               ; preds = %39
  %42 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIjjESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %indvars.iv) #7
  %43 = getelementptr inbounds i8, ptr %42, i64 4
  %44 = load i32, ptr %43, align 4, !tbaa !10
  %45 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEj(ptr noundef nonnull align 8 dereferenceable(8) %40, i32 noundef %44)
          to label %46 unwind label %.loopexit

46:                                               ; preds = %41
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %47 = call noundef i64 @_ZNKSt6vectorISt4pairIjjESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #7
  %.not = icmp eq i64 %47, %indvars.iv.next
  br i1 %.not, label %._crit_edge, label %.lr.ph.peel.next, !llvm.loop !11

48:                                               ; preds = %._crit_edge
  %49 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %31, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %50 unwind label %32

50:                                               ; preds = %48
  call void @exit(i32 noundef 0) #8
  unreachable

51:                                               ; preds = %.loopexit, %.loopexit.split-lp, %32
  %.pn = phi { ptr, i32 } [ %33, %32 ], [ %lpad.loopexit, %.loopexit ], [ %lpad.loopexit.split-lp, %.loopexit.split-lp ]
  call void @_ZNSt6vectorISt4pairIjjESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #7
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #7
  resume { ptr, i32 } %.pn
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIjjESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #4

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #5

; 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 noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEm(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorISt4pairIjjESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEj(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIjjESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #3 align 2

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) local_unnamed_addr #6

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIjjESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress norecurse noreturn uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #4 = { 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 = { "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 = { noreturn 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 #7 = { nounwind }
attributes #8 = { noreturn 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, !7, i64 0}
!6 = !{!"_ZTSSt4pairIjjE", !7, i64 0, !7, i64 4}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!6, !7, i64 4}
!11 = distinct !{!11, !12, !13}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!"llvm.loop.peeled.count", i32 1}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopFullUnrollPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SCCPPass,SROAPass,SimplifyCFGPass