; LLVM IR from lzyrapx/Competitive-Programming :: HDUOJ (2032)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }

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

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca [500 x [500 x i32]], align 16
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 1000000, ptr %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #5
  store i32 0, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #5
  store i32 0, ptr %4, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #5
  br label %6

6:                                                ; preds = %108, %0
  %7 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %5)
  %8 = load ptr, ptr %7, align 8, !tbaa !9
  %9 = getelementptr i8, ptr %8, i64 -24
  %10 = load i64, ptr %9, align 8
  %11 = getelementptr inbounds i8, ptr %7, i64 %10
  %12 = call noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264) %11)
  br i1 %12, label %13, label %110

13:                                               ; preds = %6
  store i32 0, ptr %3, align 4, !tbaa !5
  br label %14

14:                                               ; preds = %69, %13
  %15 = load i32, ptr %3, align 4, !tbaa !5
  %16 = load i32, ptr %5, align 4, !tbaa !5
  %17 = icmp slt i32 %15, %16
  br i1 %17, label %18, label %72

18:                                               ; preds = %14
  store i32 0, ptr %4, align 4, !tbaa !5
  br label %19

19:                                               ; preds = %65, %18
  %20 = load i32, ptr %4, align 4, !tbaa !5
  %21 = load i32, ptr %3, align 4, !tbaa !5
  %22 = add nsw i32 %21, 1
  %23 = icmp slt i32 %20, %22
  br i1 %23, label %24, label %68

24:                                               ; preds = %19
  %25 = load i32, ptr %4, align 4, !tbaa !5
  %26 = icmp eq i32 %25, 0
  br i1 %26, label %32, label %27

27:                                               ; preds = %24
  %28 = load i32, ptr %4, align 4, !tbaa !5
  %29 = load i32, ptr %3, align 4, !tbaa !5
  %30 = add nsw i32 %29, 1
  %31 = icmp eq i32 %28, %30
  br i1 %31, label %32, label %39

32:                                               ; preds = %27, %24
  %33 = load i32, ptr %3, align 4, !tbaa !5
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds [500 x [500 x i32]], ptr %2, i64 0, i64 %34
  %36 = load i32, ptr %4, align 4, !tbaa !5
  %37 = sext i32 %36 to i64
  %38 = getelementptr inbounds [500 x i32], ptr %35, i64 0, i64 %37
  store i32 1, ptr %38, align 4, !tbaa !5
  br label %64

39:                                               ; preds = %27
  %40 = load i32, ptr %3, align 4, !tbaa !5
  %41 = sub nsw i32 %40, 1
  %42 = sext i32 %41 to i64
  %43 = getelementptr inbounds [500 x [500 x i32]], ptr %2, i64 0, i64 %42
  %44 = load i32, ptr %4, align 4, !tbaa !5
  %45 = sub nsw i32 %44, 1
  %46 = sext i32 %45 to i64
  %47 = getelementptr inbounds [500 x i32], ptr %43, i64 0, i64 %46
  %48 = load i32, ptr %47, align 4, !tbaa !5
  %49 = load i32, ptr %3, align 4, !tbaa !5
  %50 = sub nsw i32 %49, 1
  %51 = sext i32 %50 to i64
  %52 = getelementptr inbounds [500 x [500 x i32]], ptr %2, i64 0, i64 %51
  %53 = load i32, ptr %4, align 4, !tbaa !5
  %54 = sext i32 %53 to i64
  %55 = getelementptr inbounds [500 x i32], ptr %52, i64 0, i64 %54
  %56 = load i32, ptr %55, align 4, !tbaa !5
  %57 = add nsw i32 %48, %56
  %58 = load i32, ptr %3, align 4, !tbaa !5
  %59 = sext i32 %58 to i64
  %60 = getelementptr inbounds [500 x [500 x i32]], ptr %2, i64 0, i64 %59
  %61 = load i32, ptr %4, align 4, !tbaa !5
  %62 = sext i32 %61 to i64
  %63 = getelementptr inbounds [500 x i32], ptr %60, i64 0, i64 %62
  store i32 %57, ptr %63, align 4, !tbaa !5
  br label %64

64:                                               ; preds = %39, %32
  br label %65

65:                                               ; preds = %64
  %66 = load i32, ptr %4, align 4, !tbaa !5
  %67 = add nsw i32 %66, 1
  store i32 %67, ptr %4, align 4, !tbaa !5
  br label %19, !llvm.loop !11

68:                                               ; preds = %19
  br label %69

69:                                               ; preds = %68
  %70 = load i32, ptr %3, align 4, !tbaa !5
  %71 = add nsw i32 %70, 1
  store i32 %71, ptr %3, align 4, !tbaa !5
  br label %14, !llvm.loop !13

72:                                               ; preds = %14
  store i32 0, ptr %3, align 4, !tbaa !5
  br label %73

73:                                               ; preds = %105, %72
  %74 = load i32, ptr %3, align 4, !tbaa !5
  %75 = load i32, ptr %5, align 4, !tbaa !5
  %76 = icmp slt i32 %74, %75
  br i1 %76, label %77, label %108

77:                                               ; preds = %73
  store i32 0, ptr %4, align 4, !tbaa !5
  br label %78

78:                                               ; preds = %92, %77
  %79 = load i32, ptr %4, align 4, !tbaa !5
  %80 = load i32, ptr %3, align 4, !tbaa !5
  %81 = icmp slt i32 %79, %80
  br i1 %81, label %82, label %95

82:                                               ; preds = %78
  %83 = load i32, ptr %3, align 4, !tbaa !5
  %84 = sext i32 %83 to i64
  %85 = getelementptr inbounds [500 x [500 x i32]], ptr %2, i64 0, i64 %84
  %86 = load i32, ptr %4, align 4, !tbaa !5
  %87 = sext i32 %86 to i64
  %88 = getelementptr inbounds [500 x i32], ptr %85, i64 0, i64 %87
  %89 = load i32, ptr %88, align 4, !tbaa !5
  %90 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %89)
  %91 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %90, ptr noundef @.str)
  br label %92

92:                                               ; preds = %82
  %93 = load i32, ptr %4, align 4, !tbaa !5
  %94 = add nsw i32 %93, 1
  store i32 %94, ptr %4, align 4, !tbaa !5
  br label %78, !llvm.loop !14

95:                                               ; preds = %78
  %96 = load i32, ptr %3, align 4, !tbaa !5
  %97 = sext i32 %96 to i64
  %98 = getelementptr inbounds [500 x [500 x i32]], ptr %2, i64 0, i64 %97
  %99 = load i32, ptr %4, align 4, !tbaa !5
  %100 = sext i32 %99 to i64
  %101 = getelementptr inbounds [500 x i32], ptr %98, i64 0, i64 %100
  %102 = load i32, ptr %101, align 4, !tbaa !5
  %103 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %102)
  %104 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  br label %105

105:                                              ; preds = %95
  %106 = load i32, ptr %3, align 4, !tbaa !5
  %107 = add nsw i32 %106, 1
  store i32 %107, ptr %3, align 4, !tbaa !5
  br label %73, !llvm.loop !15

108:                                              ; preds = %73
  %109 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  br label %6, !llvm.loop !16

110:                                              ; preds = %6
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 1000000, ptr %2) #5
  ret i32 0
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #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: mustprogress uwtable
declare noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264)) #3 align 2

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

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

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #4

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { mustprogress norecurse uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 = { inlinehint mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #5 = { nounwind }

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

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"vtable pointer", !8, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!14 = distinct !{!14, !12}
!15 = distinct !{!15, !12}
!16 = distinct !{!16, !12}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }

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

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca [500 x [500 x i32]], align 16
  %2 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 1000000, ptr nonnull %1) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #5
  %3 = 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)
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %5 = getelementptr i8, ptr %4, i64 -24
  %6 = load i64, ptr %5, align 8
  %7 = getelementptr inbounds i8, ptr %3, i64 %6
  %8 = call noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264) %7)
  br i1 %8, label %.preheader31, label %._crit_edge37

.preheader31:                                     ; preds = %0, %._crit_edge36
  %9 = load i32, ptr %2, align 4, !tbaa !8
  %10 = icmp sgt i32 %9, 0
  br i1 %10, label %.preheader29.preheader, label %._crit_edge36

.preheader29.preheader:                           ; preds = %.preheader31
  %wide.trip.count49 = zext nneg i32 %9 to i64
  br label %11

.loopexit:                                        ; preds = %.peel.next, %middle.block, %11
  %indvars.iv.next45 = add nuw nsw i64 %indvars.iv44, 1
  %indvars.iv.next43 = add nuw nsw i64 %indvars.iv42, 1
  %exitcond50.not = icmp eq i64 %indvars.iv.next45, %wide.trip.count49
  br i1 %exitcond50.not, label %.preheader30, label %11, !llvm.loop !11

.preheader30:                                     ; preds = %.loopexit
  br i1 %10, label %.preheader, label %._crit_edge36

11:                                               ; preds = %.preheader29.preheader, %.loopexit
  %indvars.iv44 = phi i64 [ 0, %.preheader29.preheader ], [ %indvars.iv.next45, %.loopexit ]
  %indvars.iv42 = phi i64 [ 1, %.preheader29.preheader ], [ %indvars.iv.next43, %.loopexit ]
  %12 = add nsw i64 %indvars.iv44, -1
  %13 = getelementptr inbounds [500 x [500 x i32]], ptr %1, i64 0, i64 %indvars.iv44, i64 0
  store i32 1, ptr %13, align 16
  %exitcond.peel.not = icmp eq i64 %indvars.iv42, 1
  br i1 %exitcond.peel.not, label %.loopexit, label %.peel.next.preheader

.peel.next.preheader:                             ; preds = %11
  %min.iters.check = icmp ult i64 %indvars.iv44, 4
  br i1 %min.iters.check, label %.peel.next.preheader60, label %vector.ph

vector.ph:                                        ; preds = %.peel.next.preheader
  %n.vec = and i64 %indvars.iv44, 9223372036854775804
  %ind.end = or disjoint i64 %n.vec, 1
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %offset.idx = or disjoint i64 %index, 1
  %14 = getelementptr inbounds [500 x [500 x i32]], ptr %1, i64 0, i64 %12, i64 %offset.idx
  %wide.load = load <4 x i32>, ptr %14, align 4, !tbaa !8
  %15 = getelementptr inbounds [500 x [500 x i32]], ptr %1, i64 0, i64 %12, i64 %index
  %wide.load59 = load <4 x i32>, ptr %15, align 16, !tbaa !8
  %16 = add nsw <4 x i32> %wide.load, %wide.load59
  %17 = getelementptr inbounds [500 x [500 x i32]], ptr %1, i64 0, i64 %indvars.iv44, i64 %offset.idx
  store <4 x i32> %16, ptr %17, align 4
  %index.next = add nuw i64 %index, 4
  %18 = icmp eq i64 %index.next, %n.vec
  br i1 %18, label %middle.block, label %vector.body, !llvm.loop !13

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %indvars.iv44, %n.vec
  br i1 %cmp.n, label %.loopexit, label %.peel.next.preheader60

.peel.next.preheader60:                           ; preds = %middle.block, %.peel.next.preheader
  %indvars.iv.ph = phi i64 [ 1, %.peel.next.preheader ], [ %ind.end, %middle.block ]
  br label %.peel.next

.peel.next:                                       ; preds = %.peel.next.preheader60, %.peel.next
  %indvars.iv = phi i64 [ %indvars.iv.next, %.peel.next ], [ %indvars.iv.ph, %.peel.next.preheader60 ]
  %19 = getelementptr inbounds [500 x [500 x i32]], ptr %1, i64 0, i64 %12, i64 %indvars.iv
  %20 = load i32, ptr %19, align 4, !tbaa !8
  %21 = add nsw i64 %indvars.iv, -1
  %22 = getelementptr inbounds [500 x [500 x i32]], ptr %1, i64 0, i64 %12, i64 %21
  %23 = load i32, ptr %22, align 4, !tbaa !8
  %24 = add nsw i32 %20, %23
  %25 = getelementptr inbounds [500 x [500 x i32]], ptr %1, i64 0, i64 %indvars.iv44, i64 %indvars.iv
  store i32 %24, ptr %25, align 4
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %indvars.iv42
  br i1 %exitcond.not, label %.loopexit, label %.peel.next, !llvm.loop !17

.preheader:                                       ; preds = %.preheader30, %._crit_edge
  %indvars.iv55 = phi i64 [ %indvars.iv.next56, %._crit_edge ], [ 0, %.preheader30 ]
  %.not = icmp eq i64 %indvars.iv55, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader, %.lr.ph
  %indvars.iv51 = phi i64 [ %indvars.iv.next52, %.lr.ph ], [ 0, %.preheader ]
  %26 = getelementptr inbounds [500 x [500 x i32]], ptr %1, i64 0, i64 %indvars.iv55, i64 %indvars.iv51
  %27 = load i32, ptr %26, align 4, !tbaa !8
  %28 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %27)
  %29 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %28, ptr noundef nonnull @.str)
  %indvars.iv.next52 = add nuw nsw i64 %indvars.iv51, 1
  %exitcond54.not = icmp eq i64 %indvars.iv.next52, %indvars.iv55
  br i1 %exitcond54.not, label %._crit_edge, label %.lr.ph, !llvm.loop !18

._crit_edge:                                      ; preds = %.lr.ph, %.preheader
  %30 = and i64 %indvars.iv55, 4294967295
  %31 = getelementptr inbounds [500 x [500 x i32]], ptr %1, i64 0, i64 %indvars.iv55, i64 %30
  %32 = load i32, ptr %31, align 4, !tbaa !8
  %33 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %32)
  %34 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  %indvars.iv.next56 = add nuw nsw i64 %indvars.iv55, 1
  %35 = load i32, ptr %2, align 4, !tbaa !8
  %36 = sext i32 %35 to i64
  %37 = icmp slt i64 %indvars.iv.next56, %36
  br i1 %37, label %.preheader, label %._crit_edge36, !llvm.loop !19

._crit_edge36:                                    ; preds = %._crit_edge, %.preheader31, %.preheader30
  %38 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  %39 = 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)
  %40 = load ptr, ptr %39, align 8, !tbaa !5
  %41 = getelementptr i8, ptr %40, i64 -24
  %42 = load i64, ptr %41, align 8
  %43 = getelementptr inbounds i8, ptr %39, i64 %42
  %44 = call noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264) %43)
  br i1 %44, label %.preheader31, label %._crit_edge37, !llvm.loop !20

._crit_edge37:                                    ; preds = %._crit_edge36, %0
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 1000000, ptr nonnull %1) #5
  ret i32 0
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #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: mustprogress uwtable
declare noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264)) local_unnamed_addr #3 align 2

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

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

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #4

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { mustprogress norecurse uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 = { inlinehint mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #5 = { 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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12, !14, !15, !16}
!14 = !{!"llvm.loop.peeled.count", i32 1}
!15 = !{!"llvm.loop.isvectorized", i32 1}
!16 = !{!"llvm.loop.unroll.runtime.disable"}
!17 = distinct !{!17, !12, !14, !16, !15}
!18 = distinct !{!18, !12}
!19 = distinct !{!19, !12}
!20 = distinct !{!20, !12}


; Effective O3 passes: ConstraintEliminationPass,CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LCSSAPass,LICMPass,LoopFullUnrollPass,LoopInstSimplifyPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,MergedLoadStoreMotionPass,ReassociatePass,SCCPPass,SROAPass,SimplifyCFGPass