; LLVM IR from ERGO-Code/HiGHS :: src/presolve (HPresolve)

; 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.__gnu_cxx::__normal_iterator.404" = type { ptr }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }
%class.anon.513 = type { ptr }
%"class.presolve::HPresolve" = type { ptr, ptr, ptr, ptr, double, %"class.std::vector.20", %"class.std::vector.5", %"class.std::vector.5", %"class.std::vector.5", %"class.std::vector.5", %"class.std::vector.5", %"class.std::vector.5", %"class.std::vector.5", %"class.std::vector.5", %"class.std::vector.5", %"class.std::vector.5", %"class.std::vector.5", %"class.std::vector.5", %"class.std::vector.5", %"class.std::vector.5", %"class.std::vector.20", %"class.std::vector.20", %"class.std::vector.5", %"class.std::vector.5", %"class.std::vector.20", %"class.std::vector.20", %"class.std::vector.20", %"class.std::vector.20", %"class.std::vector.5", %"class.std::vector.5", %"class.std::vector.25", %"class.std::vector.25", %class.HighsLinearSumBounds, %class.HighsLinearSumBounds, %"class.std::vector.5", %"class.std::vector.10", %"class.std::vector.5", %"class.std::vector.10", %"class.std::vector.35", %"class.std::unordered_map", %"class.std::set", %"class.std::vector.48", i8, i64, %"class.std::vector.5", %"class.std::vector.5", %"class.std::vector.10", %"class.std::vector.10", %"class.std::vector.53", i64, i32, i32, i32, i32, i32, i32, i8, i32, %class.HPresolveAnalysis }
%"class.std::vector.20" = type { %"struct.std::_Vector_base.21" }
%"struct.std::_Vector_base.21" = type { %"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl" }
%"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl" = type { %"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl_data" }
%"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::vector.25" = type { %"struct.std::_Vector_base.26" }
%"struct.std::_Vector_base.26" = type { %"struct.std::_Vector_base<std::set<int>, std::allocator<std::set<int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::set<int>, std::allocator<std::set<int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::set<int>, std::allocator<std::set<int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::set<int>, std::allocator<std::set<int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%class.HighsLinearSumBounds = type { %"class.std::vector.30", %"class.std::vector.30", %"class.std::vector.5", %"class.std::vector.5", %"class.std::vector.30", %"class.std::vector.30", %"class.std::vector.5", %"class.std::vector.5", ptr, ptr, ptr, ptr, ptr, ptr }
%"class.std::vector.30" = type { %"struct.std::_Vector_base.31" }
%"struct.std::_Vector_base.31" = type { %"struct.std::_Vector_base<HighsCDouble, std::allocator<HighsCDouble>>::_Vector_impl" }
%"struct.std::_Vector_base<HighsCDouble, std::allocator<HighsCDouble>>::_Vector_impl" = type { %"struct.std::_Vector_base<HighsCDouble, std::allocator<HighsCDouble>>::_Vector_impl_data" }
%"struct.std::_Vector_base<HighsCDouble, std::allocator<HighsCDouble>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::vector.35" = type { %"struct.std::_Vector_base.36" }
%"struct.std::_Vector_base.36" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::unordered_map" = type { %"class.std::_Hashtable" }
%"class.std::_Hashtable" = type { ptr, i64, %"struct.std::__detail::_Hash_node_base", i64, %"struct.std::__detail::_Prime_rehash_policy", ptr }
%"struct.std::__detail::_Hash_node_base" = type { ptr }
%"struct.std::__detail::_Prime_rehash_policy" = type { float, i64 }
%"class.std::set" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<std::pair<int, int>, std::pair<int, int>, std::_Identity<std::pair<int, int>>, std::less<std::pair<int, int>>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<std::pair<int, int>, std::pair<int, int>, std::_Identity<std::pair<int, int>>, std::less<std::pair<int, 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.48" = type { %"struct.std::_Vector_base.49" }
%"struct.std::_Vector_base.49" = type { %"struct.std::_Vector_base<std::_Rb_tree_const_iterator<std::pair<int, int>>, std::allocator<std::_Rb_tree_const_iterator<std::pair<int, int>>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::_Rb_tree_const_iterator<std::pair<int, int>>, std::allocator<std::_Rb_tree_const_iterator<std::pair<int, int>>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::_Rb_tree_const_iterator<std::pair<int, int>>, std::allocator<std::_Rb_tree_const_iterator<std::pair<int, int>>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::_Rb_tree_const_iterator<std::pair<int, int>>, std::allocator<std::_Rb_tree_const_iterator<std::pair<int, int>>>>::_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::vector.10" = type { %"struct.std::_Vector_base.11" }
%"struct.std::_Vector_base.11" = type { %"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl" }
%"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl" = type { %"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl_data" }
%"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::vector.53" = type { %"struct.std::_Vector_base.54" }
%"struct.std::_Vector_base.54" = type { %"struct.std::_Vector_base<unsigned short, std::allocator<unsigned short>>::_Vector_impl" }
%"struct.std::_Vector_base<unsigned short, std::allocator<unsigned short>>::_Vector_impl" = type { %"struct.std::_Vector_base<unsigned short, std::allocator<unsigned short>>::_Vector_impl_data" }
%"struct.std::_Vector_base<unsigned short, std::allocator<unsigned short>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%class.HPresolveAnalysis = type { ptr, ptr, ptr, ptr, ptr, i32, i32, %"class.std::vector.58", i8, i8, i32, i32, i32, %struct.HighsPresolveLog }
%"class.std::vector.58" = type { %"struct.std::_Bvector_base" }
%"struct.std::_Bvector_base" = type { %"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl" }
%"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl" = type { %"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl_data" }
%"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl_data" = type { %"struct.std::_Bit_iterator", %"struct.std::_Bit_iterator", ptr }
%"struct.std::_Bit_iterator" = type { %"struct.std::_Bit_iterator_base.base", [4 x i8] }
%"struct.std::_Bit_iterator_base.base" = type <{ ptr, i32 }>
%struct.HighsPresolveLog = type { %"class.std::vector.62" }
%"class.std::vector.62" = type { %"struct.std::_Vector_base.63" }
%"struct.std::_Vector_base.63" = type { %"struct.std::_Vector_base<HighsPresolveRuleLog, std::allocator<HighsPresolveRuleLog>>::_Vector_impl" }
%"struct.std::_Vector_base<HighsPresolveRuleLog, std::allocator<HighsPresolveRuleLog>>::_Vector_impl" = type { %"struct.std::_Vector_base<HighsPresolveRuleLog, std::allocator<HighsPresolveRuleLog>>::_Vector_impl_data" }
%"struct.std::_Vector_base<HighsPresolveRuleLog, std::allocator<HighsPresolveRuleLog>>::_Vector_impl_data" = type { ptr, ptr, ptr }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; 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 nonnull align 1 dereferenceable(1) ptr @_ZNSt6vectorIhSaIhEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE5eraseEN9__gnu_cxx17__normal_iteratorIPKiS1_EES6_(ptr noundef nonnull align 8 dereferenceable(24), ptr, ptr) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN9__gnu_cxx17__normal_iteratorIPKiSt6vectorIiSaIiEEEC2IPivEERKNS0_IT_S5_EE(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) unnamed_addr #1 align 2

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

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN8presolve9HPresolve11colPresolveERNS_19HighsPostsolveStackEi(ptr noundef nonnull align 8 dereferenceable(1720), ptr noundef nonnull align 8 dereferenceable(224), i32 noundef) #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZN8presolve9HPresolve21presolveColSingletonsERNS_19HighsPostsolveStackE(ptr noundef nonnull align 8 dereferenceable(1720) %0, ptr noundef nonnull align 8 dereferenceable(224) %1) #2 align 2 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca %"class.__gnu_cxx::__normal_iterator.404", align 8
  %11 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %12 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %13 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %14 = alloca %class.anon.513, align 8
  %15 = alloca %"class.__gnu_cxx::__normal_iterator.404", align 8
  %16 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %17 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %18 = load ptr, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  store i64 0, ptr %6, align 8, !tbaa !9
  br label %19

19:                                               ; preds = %55, %2
  %20 = load i64, ptr %6, align 8, !tbaa !9
  %21 = getelementptr inbounds %"class.presolve::HPresolve", ptr %18, i32 0, i32 45
  %22 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %21) #4
  %23 = icmp ne i64 %20, %22
  br i1 %23, label %25, label %24

24:                                               ; preds = %19
  store i32 2, ptr %7, align 4
  br label %58

25:                                               ; preds = %19
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  %26 = getelementptr inbounds %"class.presolve::HPresolve", ptr %18, i32 0, i32 45
  %27 = load i64, ptr %6, align 8, !tbaa !9
  %28 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %26, i64 noundef %27) #4
  %29 = load i32, ptr %28, align 4, !tbaa !11
  store i32 %29, ptr %8, align 4, !tbaa !11
  %30 = getelementptr inbounds %"class.presolve::HPresolve", ptr %18, i32 0, i32 47
  %31 = load i32, ptr %8, align 4, !tbaa !11
  %32 = sext i32 %31 to i64
  %33 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt6vectorIhSaIhEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %30, i64 noundef %32) #4
  %34 = load i8, ptr %33, align 1, !tbaa !13
  %35 = icmp ne i8 %34, 0
  br i1 %35, label %36, label %37

36:                                               ; preds = %25
  store i32 4, ptr %7, align 4
  br label %52

37:                                               ; preds = %25
  br label %38

38:                                               ; preds = %37
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #4
  %39 = load ptr, ptr %5, align 8, !tbaa !5
  %40 = load i32, ptr %8, align 4, !tbaa !11
  %41 = call noundef i32 @_ZN8presolve9HPresolve11colPresolveERNS_19HighsPostsolveStackEi(ptr noundef nonnull align 8 dereferenceable(1720) %18, ptr noundef nonnull align 8 dereferenceable(224) %39, i32 noundef %40)
  store i32 %41, ptr %9, align 4, !tbaa !14
  %42 = load i32, ptr %9, align 4, !tbaa !14
  %43 = icmp ne i32 %42, 0
  br i1 %43, label %44, label %46

44:                                               ; preds = %38
  %45 = load i32, ptr %9, align 4, !tbaa !14
  store i32 %45, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %47

46:                                               ; preds = %38
  store i32 0, ptr %7, align 4
  br label %47

47:                                               ; preds = %46, %44
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #4
  %48 = load i32, ptr %7, align 4
  switch i32 %48, label %52 [
    i32 0, label %49
  ]

49:                                               ; preds = %47
  br label %50

50:                                               ; preds = %49
  br label %51

51:                                               ; preds = %50
  store i32 0, ptr %7, align 4
  br label %52

52:                                               ; preds = %51, %47, %36
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  %53 = load i32, ptr %7, align 4
  switch i32 %53, label %58 [
    i32 0, label %54
    i32 4, label %55
  ]

54:                                               ; preds = %52
  br label %55

55:                                               ; preds = %54, %52
  %56 = load i64, ptr %6, align 8, !tbaa !9
  %57 = add i64 %56, 1
  store i64 %57, ptr %6, align 8, !tbaa !9
  br label %19, !llvm.loop !16

58:                                               ; preds = %52, %24
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  %59 = load i32, ptr %7, align 4
  switch i32 %59, label %88 [
    i32 2, label %60
    i32 1, label %86
  ]

60:                                               ; preds = %58
  %61 = getelementptr inbounds %"class.presolve::HPresolve", ptr %18, i32 0, i32 45
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #4
  %62 = getelementptr inbounds %"class.presolve::HPresolve", ptr %18, i32 0, i32 45
  %63 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %62) #4
  %64 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %12, i32 0, i32 0
  store ptr %63, ptr %64, align 8
  %65 = getelementptr inbounds %"class.presolve::HPresolve", ptr %18, i32 0, i32 45
  %66 = call ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %65) #4
  %67 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %13, i32 0, i32 0
  store ptr %66, ptr %67, align 8
  %68 = getelementptr inbounds %class.anon.513, ptr %14, i32 0, i32 0
  store ptr %18, ptr %68, align 8, !tbaa !18
  %69 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %12, i32 0, i32 0
  %70 = load ptr, ptr %69, align 8
  %71 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %13, i32 0, i32 0
  %72 = load ptr, ptr %71, align 8
  %73 = getelementptr inbounds %class.anon.513, ptr %14, i32 0, i32 0
  %74 = load ptr, ptr %73, align 8
  %75 = call ptr @"_ZSt9remove_ifIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEZN8presolve9HPresolve21presolveColSingletonsERNS7_19HighsPostsolveStackEE3$_0ET_SC_SC_T0_"(ptr %70, ptr %72, ptr %74)
  %76 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %11, i32 0, i32 0
  store ptr %75, ptr %76, align 8
  call void @_ZN9__gnu_cxx17__normal_iteratorIPKiSt6vectorIiSaIiEEEC2IPivEERKNS0_IT_S5_EE(ptr noundef nonnull align 8 dereferenceable(8) %10, ptr noundef nonnull align 8 dereferenceable(8) %11) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %16) #4
  %77 = getelementptr inbounds %"class.presolve::HPresolve", ptr %18, i32 0, i32 45
  %78 = call ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %77) #4
  %79 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %16, i32 0, i32 0
  store ptr %78, ptr %79, align 8
  call void @_ZN9__gnu_cxx17__normal_iteratorIPKiSt6vectorIiSaIiEEEC2IPivEERKNS0_IT_S5_EE(ptr noundef nonnull align 8 dereferenceable(8) %15, ptr noundef nonnull align 8 dereferenceable(8) %16) #4
  %80 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator.404", ptr %10, i32 0, i32 0
  %81 = load ptr, ptr %80, align 8
  %82 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator.404", ptr %15, i32 0, i32 0
  %83 = load ptr, ptr %82, align 8
  %84 = call ptr @_ZNSt6vectorIiSaIiEE5eraseEN9__gnu_cxx17__normal_iteratorIPKiS1_EES6_(ptr noundef nonnull align 8 dereferenceable(24) %61, ptr %81, ptr %83)
  %85 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %17, i32 0, i32 0
  store ptr %84, ptr %85, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %16) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #4
  store i32 0, ptr %3, align 4
  br label %86

86:                                               ; preds = %60, %58
  %87 = load i32, ptr %3, align 4
  ret i32 %87

88:                                               ; preds = %58
  unreachable
}

; Function Attrs: inlinehint mustprogress uwtable
declare hidden ptr @"_ZSt9remove_ifIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEZN8presolve9HPresolve21presolveColSingletonsERNS7_19HighsPostsolveStackEE3$_0ET_SC_SC_T0_"(ptr, ptr, ptr) #3

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 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 = { 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 #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 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!7, !7, i64 0}
!14 = !{!15, !15, i64 0}
!15 = !{!"_ZTSN8presolve9HPresolve6ResultE", !7, i64 0}
!16 = distinct !{!16, !17}
!17 = !{!"llvm.loop.mustprogress"}
!18 = !{!19, !6, i64 0}
!19 = !{!"_ZTSZN8presolve9HPresolve21presolveColSingletonsERNS_19HighsPostsolveStackEE3$_0", !6, i64 0}


; 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.__gnu_cxx::__normal_iterator.404" = type { ptr }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; 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 nonnull align 1 dereferenceable(1) ptr @_ZNSt6vectorIhSaIhEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE5eraseEN9__gnu_cxx17__normal_iteratorIPKiS1_EES6_(ptr noundef nonnull align 8 dereferenceable(24), ptr, ptr) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN9__gnu_cxx17__normal_iteratorIPKiSt6vectorIiSaIiEEEC2IPivEERKNS0_IT_S5_EE(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) unnamed_addr #1 align 2

; 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 uwtable
declare dso_local noundef i32 @_ZN8presolve9HPresolve11colPresolveERNS_19HighsPostsolveStackEi(ptr noundef nonnull align 8 dereferenceable(1720), ptr noundef nonnull align 8 dereferenceable(224), i32 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZN8presolve9HPresolve21presolveColSingletonsERNS_19HighsPostsolveStackE(ptr noundef nonnull align 8 dereferenceable(1720) %0, ptr noundef nonnull align 8 dereferenceable(224) %1) local_unnamed_addr #2 align 2 {
  %3 = alloca %"class.__gnu_cxx::__normal_iterator.404", align 8
  %4 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %5 = alloca %"class.__gnu_cxx::__normal_iterator.404", align 8
  %6 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %7 = getelementptr inbounds i8, ptr %0, i64 1456
  %8 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %7) #4
  %.not32 = icmp eq i64 %8, 0
  br i1 %.not32, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2
  %9 = getelementptr inbounds i8, ptr %0, i64 1504
  br label %10

10:                                               ; preds = %.lr.ph, %select.unfold
  %.01533 = phi i64 [ 0, %.lr.ph ], [ %18, %select.unfold ]
  %11 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %.01533) #4
  %12 = load i32, ptr %11, align 4, !tbaa !5
  %13 = sext i32 %12 to i64
  %14 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt6vectorIhSaIhEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %9, i64 noundef %13) #4
  %15 = load i8, ptr %14, align 1, !tbaa !9
  %.not20 = icmp eq i8 %15, 0
  br i1 %.not20, label %16, label %select.unfold

16:                                               ; preds = %10
  %17 = tail call noundef i32 @_ZN8presolve9HPresolve11colPresolveERNS_19HighsPostsolveStackEi(ptr noundef nonnull align 8 dereferenceable(1720) %0, ptr noundef nonnull align 8 dereferenceable(224) %1, i32 noundef %12)
  %.not21 = icmp eq i32 %17, 0
  br i1 %.not21, label %select.unfold, label %.loopexit

select.unfold:                                    ; preds = %16, %10
  %18 = add i64 %.01533, 1
  %19 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %7) #4
  %.not = icmp eq i64 %18, %19
  br i1 %.not, label %._crit_edge, label %10, !llvm.loop !10

._crit_edge:                                      ; preds = %select.unfold, %2
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #4
  %20 = tail call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %7) #4
  %21 = tail call ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %7) #4
  %22 = tail call ptr @"_ZSt9remove_ifIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEZN8presolve9HPresolve21presolveColSingletonsERNS7_19HighsPostsolveStackEE3$_0ET_SC_SC_T0_"(ptr %20, ptr %21, ptr nonnull %0)
  store ptr %22, ptr %4, align 8
  call void @_ZN9__gnu_cxx17__normal_iteratorIPKiSt6vectorIiSaIiEEEC2IPivEERKNS0_IT_S5_EE(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #4
  %23 = call ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %7) #4
  store ptr %23, ptr %6, align 8
  call void @_ZN9__gnu_cxx17__normal_iteratorIPKiSt6vectorIiSaIiEEEC2IPivEERKNS0_IT_S5_EE(ptr noundef nonnull align 8 dereferenceable(8) %5, ptr noundef nonnull align 8 dereferenceable(8) %6) #4
  %24 = load ptr, ptr %3, align 8
  %25 = load ptr, ptr %5, align 8
  %26 = call ptr @_ZNSt6vectorIiSaIiEE5eraseEN9__gnu_cxx17__normal_iteratorIPKiS1_EES6_(ptr noundef nonnull align 8 dereferenceable(24) %7, ptr %24, ptr %25)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #4
  br label %.loopexit

.loopexit:                                        ; preds = %16, %._crit_edge
  %.4 = phi i32 [ 0, %._crit_edge ], [ %17, %16 ]
  ret i32 %.4
}

; Function Attrs: inlinehint mustprogress uwtable
declare hidden ptr @"_ZSt9remove_ifIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEZN8presolve9HPresolve21presolveColSingletonsERNS7_19HighsPostsolveStackEE3$_0ET_SC_SC_T0_"(ptr, ptr, ptr) local_unnamed_addr #3

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 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 = { 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 #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 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass