; LLVM IR from MikeMirzayanov/testlib :: checkers/acmp.ll (ZN8InStream10readTokensB5cxx11Eii)

; 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] }
%"class.std::vector.23" = type { %"struct.std::_Vector_base.24" }
%"struct.std::_Vector_base.24" = type { %"struct.std::_Vector_base<std::__cxx11::basic_string<char>, std::allocator<std::__cxx11::basic_string<char>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::__cxx11::basic_string<char>, std::allocator<std::__cxx11::basic_string<char>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::__cxx11::basic_string<char>, std::allocator<std::__cxx11::basic_string<char>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::__cxx11::basic_string<char>, std::allocator<std::__cxx11::basic_string<char>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator.25" = type { i8 }
%struct.InStream = type { ptr, i32, %"class.std::__cxx11::basic_string", i32, i8, i8, i8, i32, %"class.std::__cxx11::basic_string", i32, i64, i64, i64 }

@.str.194 = external hidden unnamed_addr constant [41 x i8], align 1
@.str.195 = external hidden unnamed_addr constant [46 x i8], align 1

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

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) #0

; 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 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

; Function Attrs: mustprogress noreturn uwtable
declare dso_local void @_ZN8InStream4quitE7TResultPKc(ptr noundef nonnull align 8 dereferenceable(128), i32 noundef, ptr noundef) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef signext i8 @_ZN8InStream9readSpaceEv(ptr noundef nonnull align 8 dereferenceable(128)) #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN8InStream9readTokenB5cxx11Ev(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(128)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EEC2EmRKS6_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN8InStream10readTokensB5cxx11Eii(ptr dead_on_unwind noalias writable sret(%"class.std::vector.23") align 8 %0, ptr noundef nonnull align 8 dereferenceable(128) %1, i32 noundef %2, i32 noundef %3) #3 align 2 personality ptr @__gxx_personality_v0 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i1, align 1
  %10 = alloca %"class.std::allocator.25", align 1
  %11 = alloca ptr, align 8
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  %14 = alloca %"class.std::__cxx11::basic_string", align 8
  store ptr %0, ptr %5, align 8
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i32 %2, ptr %7, align 4, !tbaa !9
  store i32 %3, ptr %8, align 4, !tbaa !9
  %15 = load ptr, ptr %6, align 8
  %16 = load i32, ptr %7, align 4, !tbaa !9
  %17 = icmp slt i32 %16, 0
  br i1 %17, label %18, label %19

18:                                               ; preds = %4
  call void @_ZN8InStream4quitE7TResultPKc(ptr noundef nonnull align 8 dereferenceable(128) %15, i32 noundef 3, ptr noundef @.str.194) #4
  unreachable

19:                                               ; preds = %4
  %20 = load i32, ptr %7, align 4, !tbaa !9
  %21 = icmp sgt i32 %20, 100000000
  br i1 %21, label %22, label %23

22:                                               ; preds = %19
  call void @_ZN8InStream4quitE7TResultPKc(ptr noundef nonnull align 8 dereferenceable(128) %15, i32 noundef 3, ptr noundef @.str.195) #4
  unreachable

23:                                               ; preds = %19
  store i1 false, ptr %9, align 1
  %24 = load i32, ptr %7, align 4, !tbaa !9
  %25 = sext i32 %24 to i64
  call void @llvm.lifetime.start.p0(i64 1, ptr %10) #5
  call void @_ZNSaINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %10) #5
  invoke void @_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EEC2EmRKS6_(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %25, ptr noundef nonnull align 1 dereferenceable(1) %10)
          to label %26 unwind label %34

26:                                               ; preds = %23
  call void @_ZNSt15__new_allocatorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %10) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %10) #5
  %27 = load i32, ptr %8, align 4, !tbaa !9
  %28 = getelementptr inbounds %struct.InStream, ptr %15, i32 0, i32 9
  store i32 %27, ptr %28, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #5
  store i32 0, ptr %13, align 4, !tbaa !9
  br label %29

29:                                               ; preds = %67, %26
  %30 = load i32, ptr %13, align 4, !tbaa !9
  %31 = load i32, ptr %7, align 4, !tbaa !9
  %32 = icmp slt i32 %30, %31
  br i1 %32, label %38, label %33

33:                                               ; preds = %29
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #5
  br label %71

34:                                               ; preds = %23
  %35 = landingpad { ptr, i32 }
          cleanup
  %36 = extractvalue { ptr, i32 } %35, 0
  store ptr %36, ptr %11, align 8
  %37 = extractvalue { ptr, i32 } %35, 1
  store i32 %37, ptr %12, align 4
  call void @_ZNSt15__new_allocatorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %10) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %10) #5
  br label %76

38:                                               ; preds = %29
  call void @llvm.lifetime.start.p0(i64 32, ptr %14) #5
  invoke void @_ZN8InStream9readTokenB5cxx11Ev(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %14, ptr noundef nonnull align 8 dereferenceable(128) %15)
          to label %39 unwind label %58

39:                                               ; preds = %38
  %40 = load i32, ptr %13, align 4, !tbaa !9
  %41 = sext i32 %40 to i64
  %42 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %41) #5
  %43 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSEOS4_(ptr noundef nonnull align 8 dereferenceable(32) %42, ptr noundef nonnull align 8 dereferenceable(32) %14) #5
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %14) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr %14) #5
  %44 = getelementptr inbounds %struct.InStream, ptr %15, i32 0, i32 9
  %45 = load i32, ptr %44, align 8, !tbaa !11
  %46 = add nsw i32 %45, 1
  store i32 %46, ptr %44, align 8, !tbaa !11
  %47 = getelementptr inbounds %struct.InStream, ptr %15, i32 0, i32 6
  %48 = load i8, ptr %47, align 2, !tbaa !18, !range !19, !noundef !20
  %49 = trunc i8 %48 to i1
  br i1 %49, label %50, label %66

50:                                               ; preds = %39
  %51 = load i32, ptr %13, align 4, !tbaa !9
  %52 = add nsw i32 %51, 1
  %53 = load i32, ptr %7, align 4, !tbaa !9
  %54 = icmp slt i32 %52, %53
  br i1 %54, label %55, label %66

55:                                               ; preds = %50
  %56 = invoke noundef signext i8 @_ZN8InStream9readSpaceEv(ptr noundef nonnull align 8 dereferenceable(128) %15)
          to label %57 unwind label %62

57:                                               ; preds = %55
  br label %66

58:                                               ; preds = %38
  %59 = landingpad { ptr, i32 }
          cleanup
  %60 = extractvalue { ptr, i32 } %59, 0
  store ptr %60, ptr %11, align 8
  %61 = extractvalue { ptr, i32 } %59, 1
  store i32 %61, ptr %12, align 4
  call void @llvm.lifetime.end.p0(i64 32, ptr %14) #5
  br label %70

62:                                               ; preds = %55
  %63 = landingpad { ptr, i32 }
          cleanup
  %64 = extractvalue { ptr, i32 } %63, 0
  store ptr %64, ptr %11, align 8
  %65 = extractvalue { ptr, i32 } %63, 1
  store i32 %65, ptr %12, align 4
  br label %70

66:                                               ; preds = %57, %50, %39
  br label %67

67:                                               ; preds = %66
  %68 = load i32, ptr %13, align 4, !tbaa !9
  %69 = add nsw i32 %68, 1
  store i32 %69, ptr %13, align 4, !tbaa !9
  br label %29, !llvm.loop !21

70:                                               ; preds = %62, %58
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #5
  call void @_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #5
  br label %76

71:                                               ; preds = %33
  %72 = getelementptr inbounds %struct.InStream, ptr %15, i32 0, i32 9
  store i32 2147483647, ptr %72, align 8, !tbaa !11
  store i1 true, ptr %9, align 1
  %73 = load i1, ptr %9, align 1
  br i1 %73, label %75, label %74

74:                                               ; preds = %71
  call void @_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #5
  br label %75

75:                                               ; preds = %74, %71
  ret void

76:                                               ; preds = %70, %34
  %77 = load ptr, ptr %11, align 8
  %78 = load i32, ptr %12, align 4
  %79 = insertvalue { ptr, i32 } poison, ptr %77, 0
  %80 = insertvalue { ptr, i32 } %79, i32 %78, 1
  resume { ptr, i32 } %80
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #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 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 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 = { noreturn }
attributes #5 = { 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 = !{!12, !10, i64 96}
!12 = !{!"_ZTS8InStream", !6, i64 0, !10, i64 8, !13, i64 16, !16, i64 48, !17, i64 52, !17, i64 53, !17, i64 54, !10, i64 56, !13, i64 64, !10, i64 96, !15, i64 104, !15, i64 112, !15, i64 120}
!13 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE", !14, i64 0, !15, i64 8, !7, i64 16}
!14 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_Alloc_hiderE", !6, i64 0}
!15 = !{!"long", !7, i64 0}
!16 = !{!"_ZTS5TMode", !7, i64 0}
!17 = !{!"bool", !7, i64 0}
!18 = !{!12, !17, i64 54}
!19 = !{i8 0, i8 2}
!20 = !{}
!21 = distinct !{!21, !22}
!22 = !{!"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] }
%"class.std::vector.23" = type { %"struct.std::_Vector_base.24" }
%"struct.std::_Vector_base.24" = type { %"struct.std::_Vector_base<std::__cxx11::basic_string<char>, std::allocator<std::__cxx11::basic_string<char>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::__cxx11::basic_string<char>, std::allocator<std::__cxx11::basic_string<char>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::__cxx11::basic_string<char>, std::allocator<std::__cxx11::basic_string<char>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::__cxx11::basic_string<char>, std::allocator<std::__cxx11::basic_string<char>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator.25" = type { i8 }

@.str.194 = external hidden unnamed_addr constant [41 x i8], align 1
@.str.195 = external hidden unnamed_addr constant [46 x i8], align 1

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

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) #0

; 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 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

; Function Attrs: mustprogress noreturn uwtable
declare dso_local void @_ZN8InStream4quitE7TResultPKc(ptr noundef nonnull align 8 dereferenceable(128), i32 noundef, ptr noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef signext i8 @_ZN8InStream9readSpaceEv(ptr noundef nonnull align 8 dereferenceable(128)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN8InStream9readTokenB5cxx11Ev(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(128)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EEC2EmRKS6_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN8InStream10readTokensB5cxx11Eii(ptr dead_on_unwind noalias writable sret(%"class.std::vector.23") align 8 %0, ptr noundef nonnull align 8 dereferenceable(128) %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #3 align 2 personality ptr @__gxx_personality_v0 {
  %5 = alloca %"class.std::allocator.25", align 1
  %6 = alloca %"class.std::__cxx11::basic_string", align 8
  %7 = icmp slt i32 %2, 0
  br i1 %7, label %8, label %9

8:                                                ; preds = %4
  tail call void @_ZN8InStream4quitE7TResultPKc(ptr noundef nonnull align 8 dereferenceable(128) %1, i32 noundef 3, ptr noundef nonnull @.str.194) #4
  unreachable

9:                                                ; preds = %4
  %10 = icmp ugt i32 %2, 100000000
  br i1 %10, label %11, label %12

11:                                               ; preds = %9
  tail call void @_ZN8InStream4quitE7TResultPKc(ptr noundef nonnull align 8 dereferenceable(128) %1, i32 noundef 3, ptr noundef nonnull @.str.195) #4
  unreachable

12:                                               ; preds = %9
  %13 = zext nneg i32 %2 to i64
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %5) #5
  call void @_ZNSaINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #5
  invoke void @_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EEC2EmRKS6_(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %13, ptr noundef nonnull align 1 dereferenceable(1) %5)
          to label %14 unwind label %18

14:                                               ; preds = %12
  call void @_ZNSt15__new_allocatorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %5) #5
  %15 = getelementptr inbounds i8, ptr %1, i64 96
  store i32 %3, ptr %15, align 8, !tbaa !5
  %.not = icmp eq i32 %2, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %14
  %16 = getelementptr inbounds i8, ptr %1, i64 54
  %17 = zext nneg i32 %2 to i64
  br label %20

._crit_edge:                                      ; preds = %35, %14
  store i32 2147483647, ptr %15, align 8, !tbaa !5
  ret void

18:                                               ; preds = %12
  %19 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %5) #5
  br label %37

20:                                               ; preds = %.lr.ph, %35
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %35 ]
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %6) #5
  invoke void @_ZN8InStream9readTokenB5cxx11Ev(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %6, ptr noundef nonnull align 8 dereferenceable(128) %1)
          to label %21 unwind label %31

21:                                               ; preds = %20
  %22 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %indvars.iv) #5
  %23 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSEOS4_(ptr noundef nonnull align 8 dereferenceable(32) %22, ptr noundef nonnull align 8 dereferenceable(32) %6) #5
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %6) #5
  %24 = load i32, ptr %15, align 8, !tbaa !5
  %25 = add nsw i32 %24, 1
  store i32 %25, ptr %15, align 8, !tbaa !5
  %26 = load i8, ptr %16, align 2, !tbaa !16, !range !17, !noundef !18
  %27 = trunc nuw i8 %26 to i1
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %28 = icmp ult i64 %indvars.iv.next, %17
  %or.cond = select i1 %27, i1 %28, i1 false
  br i1 %or.cond, label %29, label %35

29:                                               ; preds = %21
  %30 = invoke noundef signext i8 @_ZN8InStream9readSpaceEv(ptr noundef nonnull align 8 dereferenceable(128) %1)
          to label %35 unwind label %33

31:                                               ; preds = %20
  %32 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %6) #5
  br label %36

33:                                               ; preds = %29
  %34 = landingpad { ptr, i32 }
          cleanup
  br label %36

35:                                               ; preds = %21, %29
  %exitcond.not = icmp eq i64 %indvars.iv.next, %13
  br i1 %exitcond.not, label %._crit_edge, label %20, !llvm.loop !19

36:                                               ; preds = %33, %31
  %.pn = phi { ptr, i32 } [ %34, %33 ], [ %32, %31 ]
  call void @_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #5
  br label %37

37:                                               ; preds = %36, %18
  %.pn.pn = phi { ptr, i32 } [ %.pn, %36 ], [ %19, %18 ]
  resume { ptr, i32 } %.pn.pn
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) 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 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 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 = { noreturn }
attributes #5 = { 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, !10, i64 96}
!6 = !{!"_ZTS8InStream", !7, i64 0, !10, i64 8, !11, i64 16, !14, i64 48, !15, i64 52, !15, i64 53, !15, i64 54, !10, i64 56, !11, i64 64, !10, i64 96, !13, i64 104, !13, i64 112, !13, i64 120}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE", !12, i64 0, !13, i64 8, !8, i64 16}
!12 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_Alloc_hiderE", !7, i64 0}
!13 = !{!"long", !8, i64 0}
!14 = !{!"_ZTS5TMode", !8, i64 0}
!15 = !{!"bool", !8, i64 0}
!16 = !{!6, !15, i64 54}
!17 = !{i8 0, i8 2}
!18 = !{}
!19 = distinct !{!19, !20}
!20 = !{!"llvm.loop.mustprogress"}


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