; LLVM IR from bldeng/AASolver :: AndersonOpt/external/OpenMesh/Core/IO (IOManager)

; 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::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }
%"struct.std::_Rb_tree_const_iterator.17" = type { ptr }
%"class.OpenMesh::IO::_IOManager_" = type { %"class.std::set", %"class.std::set.0", %"class.std::__cxx11::basic_string", %"class.std::__cxx11::basic_string" }
%"class.std::set" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<OpenMesh::IO::BaseReader *, OpenMesh::IO::BaseReader *, std::_Identity<OpenMesh::IO::BaseReader *>, std::less<OpenMesh::IO::BaseReader *>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<OpenMesh::IO::BaseReader *, OpenMesh::IO::BaseReader *, std::_Identity<OpenMesh::IO::BaseReader *>, std::less<OpenMesh::IO::BaseReader *>>::_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::set.0" = type { %"class.std::_Rb_tree.1" }
%"class.std::_Rb_tree.1" = type { %"struct.std::_Rb_tree<OpenMesh::IO::BaseWriter *, OpenMesh::IO::BaseWriter *, std::_Identity<OpenMesh::IO::BaseWriter *>, std::less<OpenMesh::IO::BaseWriter *>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<OpenMesh::IO::BaseWriter *, OpenMesh::IO::BaseWriter *, std::_Identity<OpenMesh::IO::BaseWriter *>, std::less<OpenMesh::IO::BaseWriter *>>::_Rb_tree_impl" = type { [8 x i8], %"struct.std::_Rb_tree_header" }

@.str.2 = external hidden unnamed_addr constant [7 x i8], align 1

declare i32 @__gxx_personality_v0(...)

; 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 ptr @_ZNKSt3setIPN8OpenMesh2IO10BaseWriterESt4lessIS3_ESaIS3_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(48)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt3setIPN8OpenMesh2IO10BaseWriterESt4lessIS3_ESaIS3_EE3endEv(ptr noundef nonnull align 8 dereferenceable(48)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZStneRKSt23_Rb_tree_const_iteratorIPN8OpenMesh2IO10BaseWriterEES6_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt23_Rb_tree_const_iteratorIPN8OpenMesh2IO10BaseWriterEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt23_Rb_tree_const_iteratorIPN8OpenMesh2IO10BaseWriterEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEPKS5_RKS8_(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef, ptr noundef nonnull align 8 dereferenceable(32)) #2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef ptr @_ZN8OpenMesh2IO11_IOManager_11find_writerERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(160) %0, ptr noundef nonnull align 8 dereferenceable(32) %1) #2 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca %"class.std::__cxx11::basic_string", align 8
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca %"class.std::__cxx11::basic_string", align 8
  %11 = alloca %"struct.std::_Rb_tree_const_iterator.17", align 8
  %12 = alloca %"struct.std::_Rb_tree_const_iterator.17", align 8
  %13 = alloca %"class.std::__cxx11::basic_string", align 8
  %14 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %15 = load ptr, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5rfindEcm(ptr noundef nonnull align 8 dereferenceable(32) %16, i8 noundef signext 46, i64 noundef -1) #4
  store i64 %17, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 32, ptr %7) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #4
  %18 = load i64, ptr %6, align 8, !tbaa !9
  %19 = icmp eq i64 %18, -1
  br i1 %19, label %20, label %28

20:                                               ; preds = %2
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  %22 = invoke noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %7, ptr noundef nonnull align 8 dereferenceable(32) %21)
          to label %23 unwind label %24

23:                                               ; preds = %20
  br label %43

24:                                               ; preds = %20
  %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
  br label %79

28:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 32, ptr %10) #4
  %29 = load ptr, ptr %5, align 8, !tbaa !5
  %30 = load i64, ptr %6, align 8, !tbaa !9
  %31 = add i64 %30, 1
  %32 = load ptr, ptr %5, align 8, !tbaa !5
  %33 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %32) #4
  %34 = load i64, ptr %6, align 8, !tbaa !9
  %35 = add i64 %34, 1
  %36 = sub i64 %33, %35
  invoke void @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6substrEmm(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %10, ptr noundef nonnull align 8 dereferenceable(32) %29, i64 noundef %31, i64 noundef %36)
          to label %37 unwind label %39

37:                                               ; preds = %28
  %38 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSEOS4_(ptr noundef nonnull align 8 dereferenceable(32) %7, ptr noundef nonnull align 8 dereferenceable(32) %10) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %10) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr %10) #4
  br label %43

39:                                               ; preds = %28
  %40 = landingpad { ptr, i32 }
          cleanup
  %41 = extractvalue { ptr, i32 } %40, 0
  store ptr %41, ptr %8, align 8
  %42 = extractvalue { ptr, i32 } %40, 1
  store i32 %42, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 32, ptr %10) #4
  br label %79

43:                                               ; preds = %37, %23
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #4
  %44 = getelementptr inbounds %"class.OpenMesh::IO::_IOManager_", ptr %15, i32 0, i32 1
  %45 = call ptr @_ZNKSt3setIPN8OpenMesh2IO10BaseWriterESt4lessIS3_ESaIS3_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(48) %44) #4
  %46 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator.17", ptr %11, i32 0, i32 0
  store ptr %45, ptr %46, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #4
  %47 = getelementptr inbounds %"class.OpenMesh::IO::_IOManager_", ptr %15, i32 0, i32 1
  %48 = call ptr @_ZNKSt3setIPN8OpenMesh2IO10BaseWriterESt4lessIS3_ESaIS3_EE3endEv(ptr noundef nonnull align 8 dereferenceable(48) %47) #4
  %49 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator.17", ptr %12, i32 0, i32 0
  store ptr %48, ptr %49, align 8
  call void @llvm.lifetime.start.p0(i64 32, ptr %13) #4
  invoke void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEPKS5_RKS8_(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %13, ptr noundef @.str.2, ptr noundef nonnull align 8 dereferenceable(32) %7)
          to label %50 unwind label %64

50:                                               ; preds = %43
  br label %51

51:                                               ; preds = %73, %50
  %52 = call noundef zeroext i1 @_ZStneRKSt23_Rb_tree_const_iteratorIPN8OpenMesh2IO10BaseWriterEES6_(ptr noundef nonnull align 8 dereferenceable(8) %11, ptr noundef nonnull align 8 dereferenceable(8) %12) #4
  br i1 %52, label %53, label %75

53:                                               ; preds = %51
  %54 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt23_Rb_tree_const_iteratorIPN8OpenMesh2IO10BaseWriterEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %11) #4
  %55 = load ptr, ptr %54, align 8, !tbaa !5
  %56 = load ptr, ptr %55, align 8, !tbaa !11
  %57 = getelementptr inbounds ptr, ptr %56, i64 4
  %58 = load ptr, ptr %57, align 8
  %59 = invoke noundef zeroext i1 %58(ptr noundef nonnull align 8 dereferenceable(8) %55, ptr noundef nonnull align 8 dereferenceable(32) %13)
          to label %60 unwind label %68

60:                                               ; preds = %53
  br i1 %59, label %61, label %72

61:                                               ; preds = %60
  %62 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt23_Rb_tree_const_iteratorIPN8OpenMesh2IO10BaseWriterEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %11) #4
  %63 = load ptr, ptr %62, align 8, !tbaa !5
  store ptr %63, ptr %3, align 8
  store i32 1, ptr %14, align 4
  br label %76

64:                                               ; preds = %43
  %65 = landingpad { ptr, i32 }
          cleanup
  %66 = extractvalue { ptr, i32 } %65, 0
  store ptr %66, ptr %8, align 8
  %67 = extractvalue { ptr, i32 } %65, 1
  store i32 %67, ptr %9, align 4
  br label %78

68:                                               ; preds = %53
  %69 = landingpad { ptr, i32 }
          cleanup
  %70 = extractvalue { ptr, i32 } %69, 0
  store ptr %70, ptr %8, align 8
  %71 = extractvalue { ptr, i32 } %69, 1
  store i32 %71, ptr %9, align 4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %13) #4
  br label %78

72:                                               ; preds = %60
  br label %73

73:                                               ; preds = %72
  %74 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt23_Rb_tree_const_iteratorIPN8OpenMesh2IO10BaseWriterEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %11) #4
  br label %51, !llvm.loop !13

75:                                               ; preds = %51
  store ptr null, ptr %3, align 8
  store i32 1, ptr %14, align 4
  br label %76

76:                                               ; preds = %75, %61
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %13) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr %13) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  %77 = load ptr, ptr %3, align 8
  ret ptr %77

78:                                               ; preds = %68, %64
  call void @llvm.lifetime.end.p0(i64 32, ptr %13) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #4
  br label %79

79:                                               ; preds = %78, %39, %24
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  br label %80

80:                                               ; preds = %79
  %81 = load ptr, ptr %8, align 8
  %82 = load i32, ptr %9, align 4
  %83 = insertvalue { ptr, i32 } poison, ptr %81, 0
  %84 = insertvalue { ptr, i32 } %83, i32 %82, 1
  resume { ptr, i32 } %84
}

; Function Attrs: nounwind
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5rfindEcm(ptr noundef nonnull align 8 dereferenceable(32), i8 noundef signext, i64 noundef) #3

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSERKS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) #2 align 2

; Function Attrs: mustprogress uwtable
declare void @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6substrEmm(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(32), i64 noundef, i64 noundef) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSEOS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) #1 align 2

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 = { 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 #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 = !{!"vtable pointer", !8, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }
%"struct.std::_Rb_tree_const_iterator.17" = type { ptr }

@.str.2 = external hidden unnamed_addr constant [7 x i8], align 1

declare i32 @__gxx_personality_v0(...)

; 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 ptr @_ZNKSt3setIPN8OpenMesh2IO10BaseWriterESt4lessIS3_ESaIS3_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(48)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt3setIPN8OpenMesh2IO10BaseWriterESt4lessIS3_ESaIS3_EE3endEv(ptr noundef nonnull align 8 dereferenceable(48)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZStneRKSt23_Rb_tree_const_iteratorIPN8OpenMesh2IO10BaseWriterEES6_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt23_Rb_tree_const_iteratorIPN8OpenMesh2IO10BaseWriterEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt23_Rb_tree_const_iteratorIPN8OpenMesh2IO10BaseWriterEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEPKS5_RKS8_(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef, ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef ptr @_ZN8OpenMesh2IO11_IOManager_11find_writerERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(160) %0, ptr noundef nonnull align 8 dereferenceable(32) %1) local_unnamed_addr #2 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca %"class.std::__cxx11::basic_string", align 8
  %4 = alloca %"class.std::__cxx11::basic_string", align 8
  %5 = alloca %"struct.std::_Rb_tree_const_iterator.17", align 8
  %6 = alloca %"struct.std::_Rb_tree_const_iterator.17", align 8
  %7 = alloca %"class.std::__cxx11::basic_string", align 8
  %8 = tail call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5rfindEcm(ptr noundef nonnull align 8 dereferenceable(32) %1, i8 noundef signext 46, i64 noundef -1) #4
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %3) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %3) #4
  %9 = icmp eq i64 %8, -1
  br i1 %9, label %10, label %14

10:                                               ; preds = %2
  %11 = invoke noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %3, ptr noundef nonnull align 8 dereferenceable(32) %1)
          to label %22 unwind label %12

12:                                               ; preds = %10
  %13 = landingpad { ptr, i32 }
          cleanup
  br label %45

14:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %4) #4
  %15 = add nuw i64 %8, 1
  %16 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %1) #4
  %17 = sub i64 %16, %15
  invoke void @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6substrEmm(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %4, ptr noundef nonnull align 8 dereferenceable(32) %1, i64 noundef %15, i64 noundef %17)
          to label %18 unwind label %20

18:                                               ; preds = %14
  %19 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSEOS4_(ptr noundef nonnull align 8 dereferenceable(32) %3, ptr noundef nonnull align 8 dereferenceable(32) %4) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #4
  br label %22

20:                                               ; preds = %14
  %21 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #4
  br label %45

22:                                               ; preds = %10, %18
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #4
  %23 = getelementptr inbounds i8, ptr %0, i64 48
  %24 = call ptr @_ZNKSt3setIPN8OpenMesh2IO10BaseWriterESt4lessIS3_ESaIS3_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(48) %23) #4
  store ptr %24, ptr %5, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #4
  %25 = call ptr @_ZNKSt3setIPN8OpenMesh2IO10BaseWriterESt4lessIS3_ESaIS3_EE3endEv(ptr noundef nonnull align 8 dereferenceable(48) %23) #4
  store ptr %25, ptr %6, align 8
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %7) #4
  invoke void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEPKS5_RKS8_(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %7, ptr noundef nonnull @.str.2, ptr noundef nonnull align 8 dereferenceable(32) %3)
          to label %.preheader unwind label %37

.preheader:                                       ; preds = %22
  %26 = call noundef zeroext i1 @_ZStneRKSt23_Rb_tree_const_iteratorIPN8OpenMesh2IO10BaseWriterEES6_(ptr noundef nonnull align 8 dereferenceable(8) %5, ptr noundef nonnull align 8 dereferenceable(8) %6) #4
  br i1 %26, label %.lr.ph, label %.loopexit

.lr.ph:                                           ; preds = %.preheader, %41
  %27 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt23_Rb_tree_const_iteratorIPN8OpenMesh2IO10BaseWriterEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %5) #4
  %28 = load ptr, ptr %27, align 8, !tbaa !5
  %29 = load ptr, ptr %28, align 8, !tbaa !9
  %30 = getelementptr inbounds i8, ptr %29, i64 32
  %31 = load ptr, ptr %30, align 8
  %32 = invoke noundef zeroext i1 %31(ptr noundef nonnull align 8 dereferenceable(8) %28, ptr noundef nonnull align 8 dereferenceable(32) %7)
          to label %33 unwind label %39

33:                                               ; preds = %.lr.ph
  br i1 %32, label %34, label %41

34:                                               ; preds = %33
  %35 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt23_Rb_tree_const_iteratorIPN8OpenMesh2IO10BaseWriterEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %5) #4
  %36 = load ptr, ptr %35, align 8, !tbaa !5
  br label %.loopexit

37:                                               ; preds = %22
  %38 = landingpad { ptr, i32 }
          cleanup
  br label %44

39:                                               ; preds = %.lr.ph
  %40 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #4
  br label %44

41:                                               ; preds = %33
  %42 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt23_Rb_tree_const_iteratorIPN8OpenMesh2IO10BaseWriterEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %5) #4
  %43 = call noundef zeroext i1 @_ZStneRKSt23_Rb_tree_const_iteratorIPN8OpenMesh2IO10BaseWriterEES6_(ptr noundef nonnull align 8 dereferenceable(8) %5, ptr noundef nonnull align 8 dereferenceable(8) %6) #4
  br i1 %43, label %.lr.ph, label %.loopexit, !llvm.loop !11

.loopexit:                                        ; preds = %41, %.preheader, %34
  %.012 = phi ptr [ %36, %34 ], [ null, %.preheader ], [ null, %41 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %7) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %3) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %3) #4
  ret ptr %.012

44:                                               ; preds = %39, %37
  %.pn = phi { ptr, i32 } [ %40, %39 ], [ %38, %37 ]
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %7) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #4
  br label %45

45:                                               ; preds = %44, %20, %12
  %.pn.pn = phi { ptr, i32 } [ %.pn, %44 ], [ %13, %12 ], [ %21, %20 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %3) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %3) #4
  resume { ptr, i32 } %.pn.pn
}

; Function Attrs: nounwind
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5rfindEcm(ptr noundef nonnull align 8 dereferenceable(32), i8 noundef signext, i64 noundef) local_unnamed_addr #3

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSERKS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare void @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6substrEmm(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(32), i64 noundef, i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSEOS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #1 align 2

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 = { 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 #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 = !{!"vtable pointer", !8, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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