; LLVM IR from VAR-solutions/Algorithms :: data structures/linked list/cpp/linked-list(doubly-singly).ll (Z10insert_indv)

; 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_ostream" = type { ptr, %"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_istream" = type { ptr, i64, %"class.std::basic_ios" }
%struct.node = type { i32, ptr, ptr }

@head = external dso_local global ptr, align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@.str.1 = external hidden unnamed_addr constant [23 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [17 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [19 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [24 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [16 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

; 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) #1

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #2

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) #3

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

; Function Attrs: inlinehint mustprogress uwtable
declare i32 @getchar() #1

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z6singlyv() #4

; Function Attrs: mustprogress uwtable
define dso_local void @_Z10insert_indv() #4 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #5
  %10 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.1)
  %11 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %1)
  %12 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.2)
  %13 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %2)
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #5
  %14 = load ptr, ptr @head, align 8, !tbaa !5
  store ptr %14, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #5
  store i32 0, ptr %4, align 4, !tbaa !9
  br label %15

15:                                               ; preds = %18, %0
  %16 = load ptr, ptr %3, align 8, !tbaa !5
  %17 = icmp ne ptr %16, null
  br i1 %17, label %18, label %24

18:                                               ; preds = %15
  %19 = load ptr, ptr %3, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.node, ptr %19, i32 0, i32 1
  %21 = load ptr, ptr %20, align 8, !tbaa !11
  store ptr %21, ptr %3, align 8, !tbaa !5
  %22 = load i32, ptr %4, align 4, !tbaa !9
  %23 = add nsw i32 %22, 1
  store i32 %23, ptr %4, align 4, !tbaa !9
  br label %15, !llvm.loop !13

24:                                               ; preds = %15
  %25 = load i32, ptr %2, align 4, !tbaa !9
  %26 = load i32, ptr %4, align 4, !tbaa !9
  %27 = icmp sgt i32 %25, %26
  br i1 %27, label %28, label %30

28:                                               ; preds = %24
  %29 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.3)
  br label %63

30:                                               ; preds = %24
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #5
  store i32 0, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #5
  %31 = load ptr, ptr @head, align 8, !tbaa !5
  store ptr %31, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #5
  store i32 1, ptr %7, align 4, !tbaa !9
  br label %32

32:                                               ; preds = %42, %30
  %33 = load i32, ptr %7, align 4, !tbaa !9
  %34 = load i32, ptr %2, align 4, !tbaa !9
  %35 = sub nsw i32 %34, 1
  %36 = icmp slt i32 %33, %35
  br i1 %36, label %38, label %37

37:                                               ; preds = %32
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  br label %45

38:                                               ; preds = %32
  %39 = load ptr, ptr %6, align 8, !tbaa !5
  %40 = getelementptr inbounds %struct.node, ptr %39, i32 0, i32 1
  %41 = load ptr, ptr %40, align 8, !tbaa !11
  store ptr %41, ptr %6, align 8, !tbaa !5
  br label %42

42:                                               ; preds = %38
  %43 = load i32, ptr %7, align 4, !tbaa !9
  %44 = add nsw i32 %43, 1
  store i32 %44, ptr %7, align 4, !tbaa !9
  br label %32, !llvm.loop !15

45:                                               ; preds = %37
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #5
  %46 = call noalias noundef nonnull ptr @_Znwm(i64 noundef 24) #6
  store ptr %46, ptr %8, align 8, !tbaa !5
  %47 = load i32, ptr %1, align 4, !tbaa !9
  %48 = load ptr, ptr %8, align 8, !tbaa !5
  %49 = getelementptr inbounds %struct.node, ptr %48, i32 0, i32 0
  store i32 %47, ptr %49, align 8, !tbaa !16
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #5
  %50 = load ptr, ptr %6, align 8, !tbaa !5
  %51 = getelementptr inbounds %struct.node, ptr %50, i32 0, i32 1
  %52 = load ptr, ptr %51, align 8, !tbaa !11
  store ptr %52, ptr %9, align 8, !tbaa !5
  %53 = load ptr, ptr %8, align 8, !tbaa !5
  %54 = load ptr, ptr %6, align 8, !tbaa !5
  %55 = getelementptr inbounds %struct.node, ptr %54, i32 0, i32 1
  store ptr %53, ptr %55, align 8, !tbaa !11
  %56 = load ptr, ptr %9, align 8, !tbaa !5
  %57 = load ptr, ptr %8, align 8, !tbaa !5
  %58 = getelementptr inbounds %struct.node, ptr %57, i32 0, i32 1
  store ptr %56, ptr %58, align 8, !tbaa !11
  %59 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.4)
  %60 = load i32, ptr %2, align 4, !tbaa !9
  %61 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %59, i32 noundef %60)
  %62 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %61, ptr noundef @.str.5)
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  br label %63

63:                                               ; preds = %45, %28
  %64 = call i32 @getchar()
  call void @_Z6singlyv()
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #5
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { "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 = { nobuiltin allocsize(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 = { 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 = { nounwind }
attributes #6 = { builtin allocsize(0) }

!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, !6, i64 8}
!12 = !{!"_ZTS4node", !10, i64 0, !6, i64 8, !6, i64 16}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}
!16 = !{!12, !10, 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.std::basic_ostream" = type { ptr, %"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_istream" = type { ptr, i64, %"class.std::basic_ios" }

@head = external dso_local local_unnamed_addr global ptr, align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@.str.1 = external hidden unnamed_addr constant [23 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [17 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [19 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [24 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [16 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

; 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 #1

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) local_unnamed_addr #3

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

; Function Attrs: inlinehint mustprogress nofree nounwind uwtable
declare noundef i32 @getchar() 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 #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z6singlyv() local_unnamed_addr #5

; Function Attrs: mustprogress uwtable
define dso_local void @_Z10insert_indv() local_unnamed_addr #5 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #6
  %3 = tail call 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)
  %4 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %1)
  %5 = call 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)
  %6 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %2)
  %.015 = load ptr, ptr @head, align 8, !tbaa !5
  %.not16 = icmp eq ptr %.015, null
  br i1 %.not16, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %0, %.lr.ph
  %.018 = phi ptr [ %.0, %.lr.ph ], [ %.015, %0 ]
  %.01217 = phi i32 [ %8, %.lr.ph ], [ 0, %0 ]
  %7 = getelementptr inbounds i8, ptr %.018, i64 8
  %8 = add nuw nsw i32 %.01217, 1
  %.0 = load ptr, ptr %7, align 8, !tbaa !5
  %.not = icmp eq ptr %.0, null
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %0
  %.012.lcssa = phi i32 [ 0, %0 ], [ %8, %.lr.ph ]
  %9 = load i32, ptr %2, align 4, !tbaa !11
  %10 = icmp sgt i32 %9, %.012.lcssa
  br i1 %10, label %15, label %.preheader

.preheader:                                       ; preds = %._crit_edge
  %11 = icmp sgt i32 %9, 2
  br i1 %11, label %.lr.ph22.preheader, label %._crit_edge23

.lr.ph22.preheader:                               ; preds = %.preheader
  %12 = add nsw i32 %9, -2
  %13 = add nsw i32 %9, -3
  %xtraiter = and i32 %12, 7
  %14 = icmp ult i32 %13, 7
  br i1 %14, label %._crit_edge23.loopexit.unr-lcssa, label %.lr.ph22.preheader.new

.lr.ph22.preheader.new:                           ; preds = %.lr.ph22.preheader
  %unroll_iter = and i32 %12, -8
  br label %.lr.ph22

15:                                               ; preds = %._crit_edge
  %16 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.3)
  br label %35

._crit_edge23.loopexit.unr-lcssa:                 ; preds = %.lr.ph22, %.lr.ph22.preheader
  %.014.lcssa28.ph = phi ptr [ poison, %.lr.ph22.preheader ], [ %.014.7, %.lr.ph22 ]
  %.01421.unr = phi ptr [ %.015, %.lr.ph22.preheader ], [ %.014.7, %.lr.ph22 ]
  %lcmp.mod.not = icmp eq i32 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge23, label %.lr.ph22.epil

.lr.ph22.epil:                                    ; preds = %._crit_edge23.loopexit.unr-lcssa, %.lr.ph22.epil
  %.01421.epil = phi ptr [ %.014.epil, %.lr.ph22.epil ], [ %.01421.unr, %._crit_edge23.loopexit.unr-lcssa ]
  %epil.iter = phi i32 [ %epil.iter.next, %.lr.ph22.epil ], [ 0, %._crit_edge23.loopexit.unr-lcssa ]
  %17 = getelementptr inbounds i8, ptr %.01421.epil, i64 8
  %.014.epil = load ptr, ptr %17, align 8, !tbaa !5
  %epil.iter.next = add i32 %epil.iter, 1
  %epil.iter.cmp.not = icmp eq i32 %epil.iter.next, %xtraiter
  br i1 %epil.iter.cmp.not, label %._crit_edge23, label %.lr.ph22.epil, !llvm.loop !13

._crit_edge23:                                    ; preds = %._crit_edge23.loopexit.unr-lcssa, %.lr.ph22.epil, %.preheader
  %.014.lcssa = phi ptr [ %.015, %.preheader ], [ %.014.lcssa28.ph, %._crit_edge23.loopexit.unr-lcssa ], [ %.014.epil, %.lr.ph22.epil ]
  %18 = call noalias noundef nonnull dereferenceable(24) ptr @_Znwm(i64 noundef 24) #7
  %19 = load i32, ptr %1, align 4, !tbaa !11
  store i32 %19, ptr %18, align 8, !tbaa !15
  %20 = getelementptr inbounds i8, ptr %.014.lcssa, i64 8
  %21 = load ptr, ptr %20, align 8, !tbaa !17
  store ptr %18, ptr %20, align 8, !tbaa !17
  %22 = getelementptr inbounds i8, ptr %18, i64 8
  store ptr %21, ptr %22, align 8, !tbaa !17
  %23 = call 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)
  %24 = load i32, ptr %2, align 4, !tbaa !11
  %25 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %23, i32 noundef %24)
  %26 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %25, ptr noundef nonnull @.str.5)
  br label %35

.lr.ph22:                                         ; preds = %.lr.ph22, %.lr.ph22.preheader.new
  %.01421 = phi ptr [ %.015, %.lr.ph22.preheader.new ], [ %.014.7, %.lr.ph22 ]
  %niter = phi i32 [ 0, %.lr.ph22.preheader.new ], [ %niter.next.7, %.lr.ph22 ]
  %27 = getelementptr inbounds i8, ptr %.01421, i64 8
  %.014 = load ptr, ptr %27, align 8, !tbaa !5
  %28 = getelementptr inbounds i8, ptr %.014, i64 8
  %.014.1 = load ptr, ptr %28, align 8, !tbaa !5
  %29 = getelementptr inbounds i8, ptr %.014.1, i64 8
  %.014.2 = load ptr, ptr %29, align 8, !tbaa !5
  %30 = getelementptr inbounds i8, ptr %.014.2, i64 8
  %.014.3 = load ptr, ptr %30, align 8, !tbaa !5
  %31 = getelementptr inbounds i8, ptr %.014.3, i64 8
  %.014.4 = load ptr, ptr %31, align 8, !tbaa !5
  %32 = getelementptr inbounds i8, ptr %.014.4, i64 8
  %.014.5 = load ptr, ptr %32, align 8, !tbaa !5
  %33 = getelementptr inbounds i8, ptr %.014.5, i64 8
  %.014.6 = load ptr, ptr %33, align 8, !tbaa !5
  %34 = getelementptr inbounds i8, ptr %.014.6, i64 8
  %.014.7 = load ptr, ptr %34, align 8, !tbaa !5
  %niter.next.7 = add i32 %niter, 8
  %niter.ncmp.7 = icmp eq i32 %niter.next.7, %unroll_iter
  br i1 %niter.ncmp.7, label %._crit_edge23.loopexit.unr-lcssa, label %.lr.ph22, !llvm.loop !18

35:                                               ; preds = %._crit_edge23, %15
  %36 = call i32 @getchar()
  call void @_Z6singlyv()
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  ret void
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { "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 = { nobuiltin allocsize(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 nofree 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 #5 = { 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 #6 = { nounwind }
attributes #7 = { builtin allocsize(0) }

!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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.unroll.disable"}
!15 = !{!16, !12, i64 0}
!16 = !{!"_ZTS4node", !12, i64 0, !6, i64 8, !6, i64 16}
!17 = !{!16, !6, i64 8}
!18 = distinct !{!18, !10}


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