; LLVM IR from VastoLorde95/Competitive-Programming :: Codeforces/362 Division 1/Problem E/E.ll (Z15pointUpdateTreeiiii)

; 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"

%struct.node = type <{ %"class.std::vector", i64, i64, i64, i32, [4 x i8] }>
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"struct.std::pair" = type { i64, i64 }

@tree = external dso_local global [524288 x %struct.node], align 16

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN4node7combineERS_S0_(ptr noundef nonnull align 8 dereferenceable(52), ptr noundef nonnull align 8 dereferenceable(52), ptr noundef nonnull align 8 dereferenceable(52)) #1 align 2

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5shiftiii(i32 noundef, i32 noundef, i32 noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z15pointUpdateTreeiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) #1 {
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  store i32 %0, ptr %5, align 4, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !5
  store i32 %2, ptr %7, align 4, !tbaa !5
  store i32 %3, ptr %8, align 4, !tbaa !5
  %13 = load i32, ptr %7, align 4, !tbaa !5
  %14 = add nsw i32 %13, 1
  %15 = load i32, ptr %8, align 4, !tbaa !5
  %16 = icmp eq i32 %14, %15
  br i1 %16, label %17, label %90

17:                                               ; preds = %4
  %18 = load i32, ptr %6, align 4, !tbaa !5
  %19 = sext i32 %18 to i64
  %20 = getelementptr inbounds [524288 x %struct.node], ptr @tree, i64 0, i64 %19
  %21 = getelementptr inbounds %struct.node, ptr %20, i32 0, i32 4
  %22 = load i32, ptr %21, align 8, !tbaa !9
  %23 = add nsw i32 %22, 1
  store i32 %23, ptr %21, align 8, !tbaa !9
  %24 = load i32, ptr %6, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [524288 x %struct.node], ptr @tree, i64 0, i64 %25
  %27 = getelementptr inbounds %struct.node, ptr %26, i32 0, i32 4
  %28 = load i32, ptr %27, align 8, !tbaa !9
  %29 = sext i32 %28 to i64
  %30 = load i32, ptr %6, align 4, !tbaa !5
  %31 = sext i32 %30 to i64
  %32 = getelementptr inbounds [524288 x %struct.node], ptr @tree, i64 0, i64 %31
  %33 = getelementptr inbounds %struct.node, ptr %32, i32 0, i32 0
  %34 = call noundef i64 @_ZNKSt6vectorISt4pairIxxESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %33) #3
  %35 = icmp eq i64 %29, %34
  br i1 %35, label %36, label %51

36:                                               ; preds = %17
  %37 = load i32, ptr %6, align 4, !tbaa !5
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds [524288 x %struct.node], ptr @tree, i64 0, i64 %38
  %40 = getelementptr inbounds %struct.node, ptr %39, i32 0, i32 1
  store i64 1125899906842624, ptr %40, align 8, !tbaa !17
  %41 = load i32, ptr %6, align 4, !tbaa !5
  %42 = sext i32 %41 to i64
  %43 = getelementptr inbounds [524288 x %struct.node], ptr @tree, i64 0, i64 %42
  %44 = getelementptr inbounds %struct.node, ptr %43, i32 0, i32 2
  store i64 1125899906842624, ptr %44, align 8, !tbaa !18
  %45 = load i32, ptr %5, align 4, !tbaa !5
  %46 = sext i32 %45 to i64
  %47 = load i32, ptr %6, align 4, !tbaa !5
  %48 = sext i32 %47 to i64
  %49 = getelementptr inbounds [524288 x %struct.node], ptr @tree, i64 0, i64 %48
  %50 = getelementptr inbounds %struct.node, ptr %49, i32 0, i32 3
  store i64 %46, ptr %50, align 8, !tbaa !19
  br label %89

51:                                               ; preds = %17
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  %52 = load i32, ptr %6, align 4, !tbaa !5
  %53 = sext i32 %52 to i64
  %54 = getelementptr inbounds [524288 x %struct.node], ptr @tree, i64 0, i64 %53
  %55 = getelementptr inbounds %struct.node, ptr %54, i32 0, i32 4
  %56 = load i32, ptr %55, align 8, !tbaa !9
  store i32 %56, ptr %9, align 4, !tbaa !5
  %57 = load i32, ptr %6, align 4, !tbaa !5
  %58 = sext i32 %57 to i64
  %59 = getelementptr inbounds [524288 x %struct.node], ptr @tree, i64 0, i64 %58
  %60 = getelementptr inbounds %struct.node, ptr %59, i32 0, i32 0
  %61 = load i32, ptr %9, align 4, !tbaa !5
  %62 = sext i32 %61 to i64
  %63 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %60, i64 noundef %62) #3
  %64 = getelementptr inbounds %"struct.std::pair", ptr %63, i32 0, i32 0
  %65 = load i64, ptr %64, align 8, !tbaa !20
  %66 = load i32, ptr %6, align 4, !tbaa !5
  %67 = sext i32 %66 to i64
  %68 = getelementptr inbounds [524288 x %struct.node], ptr @tree, i64 0, i64 %67
  %69 = getelementptr inbounds %struct.node, ptr %68, i32 0, i32 3
  %70 = load i64, ptr %69, align 8, !tbaa !19
  %71 = add nsw i64 %65, %70
  %72 = load i32, ptr %6, align 4, !tbaa !5
  %73 = sext i32 %72 to i64
  %74 = getelementptr inbounds [524288 x %struct.node], ptr @tree, i64 0, i64 %73
  %75 = getelementptr inbounds %struct.node, ptr %74, i32 0, i32 1
  store i64 %71, ptr %75, align 8, !tbaa !17
  %76 = load i32, ptr %6, align 4, !tbaa !5
  %77 = sext i32 %76 to i64
  %78 = getelementptr inbounds [524288 x %struct.node], ptr @tree, i64 0, i64 %77
  %79 = getelementptr inbounds %struct.node, ptr %78, i32 0, i32 0
  %80 = load i32, ptr %9, align 4, !tbaa !5
  %81 = sext i32 %80 to i64
  %82 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %79, i64 noundef %81) #3
  %83 = getelementptr inbounds %"struct.std::pair", ptr %82, i32 0, i32 1
  %84 = load i64, ptr %83, align 8, !tbaa !22
  %85 = load i32, ptr %6, align 4, !tbaa !5
  %86 = sext i32 %85 to i64
  %87 = getelementptr inbounds [524288 x %struct.node], ptr @tree, i64 0, i64 %86
  %88 = getelementptr inbounds %struct.node, ptr %87, i32 0, i32 2
  store i64 %84, ptr %88, align 8, !tbaa !18
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  br label %89

89:                                               ; preds = %51, %36
  br label %125

90:                                               ; preds = %4
  %91 = load i32, ptr %6, align 4, !tbaa !5
  %92 = load i32, ptr %7, align 4, !tbaa !5
  %93 = load i32, ptr %8, align 4, !tbaa !5
  call void @_Z5shiftiii(i32 noundef %91, i32 noundef %92, i32 noundef %93)
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  %94 = load i32, ptr %6, align 4, !tbaa !5
  %95 = shl i32 %94, 1
  store i32 %95, ptr %10, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #3
  %96 = load i32, ptr %10, align 4, !tbaa !5
  %97 = add nsw i32 %96, 1
  store i32 %97, ptr %11, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #3
  %98 = load i32, ptr %7, align 4, !tbaa !5
  %99 = load i32, ptr %8, align 4, !tbaa !5
  %100 = add nsw i32 %98, %99
  %101 = ashr i32 %100, 1
  store i32 %101, ptr %12, align 4, !tbaa !5
  %102 = load i32, ptr %5, align 4, !tbaa !5
  %103 = load i32, ptr %12, align 4, !tbaa !5
  %104 = icmp slt i32 %102, %103
  br i1 %104, label %105, label %110

105:                                              ; preds = %90
  %106 = load i32, ptr %5, align 4, !tbaa !5
  %107 = load i32, ptr %10, align 4, !tbaa !5
  %108 = load i32, ptr %7, align 4, !tbaa !5
  %109 = load i32, ptr %12, align 4, !tbaa !5
  call void @_Z15pointUpdateTreeiiii(i32 noundef %106, i32 noundef %107, i32 noundef %108, i32 noundef %109)
  br label %115

110:                                              ; preds = %90
  %111 = load i32, ptr %5, align 4, !tbaa !5
  %112 = load i32, ptr %11, align 4, !tbaa !5
  %113 = load i32, ptr %12, align 4, !tbaa !5
  %114 = load i32, ptr %8, align 4, !tbaa !5
  call void @_Z15pointUpdateTreeiiii(i32 noundef %111, i32 noundef %112, i32 noundef %113, i32 noundef %114)
  br label %115

115:                                              ; preds = %110, %105
  %116 = load i32, ptr %6, align 4, !tbaa !5
  %117 = sext i32 %116 to i64
  %118 = getelementptr inbounds [524288 x %struct.node], ptr @tree, i64 0, i64 %117
  %119 = load i32, ptr %10, align 4, !tbaa !5
  %120 = sext i32 %119 to i64
  %121 = getelementptr inbounds [524288 x %struct.node], ptr @tree, i64 0, i64 %120
  %122 = load i32, ptr %11, align 4, !tbaa !5
  %123 = sext i32 %122 to i64
  %124 = getelementptr inbounds [524288 x %struct.node], ptr @tree, i64 0, i64 %123
  call void @_ZN4node7combineERS_S0_(ptr noundef nonnull align 8 dereferenceable(52) %118, ptr noundef nonnull align 8 dereferenceable(52) %121, ptr noundef nonnull align 8 dereferenceable(52) %124)
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  br label %125

125:                                              ; preds = %115, %89
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorISt4pairIxxESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { 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 #3 = { 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, !6, i64 48}
!10 = !{!"_ZTS4node", !11, i64 0, !16, i64 24, !16, i64 32, !16, i64 40, !6, i64 48}
!11 = !{!"_ZTSSt6vectorISt4pairIxxESaIS1_EE", !12, i64 0}
!12 = !{!"_ZTSSt12_Vector_baseISt4pairIxxESaIS1_EE", !13, i64 0}
!13 = !{!"_ZTSNSt12_Vector_baseISt4pairIxxESaIS1_EE12_Vector_implE", !14, i64 0}
!14 = !{!"_ZTSNSt12_Vector_baseISt4pairIxxESaIS1_EE17_Vector_impl_dataE", !15, i64 0, !15, i64 8, !15, i64 16}
!15 = !{!"any pointer", !7, i64 0}
!16 = !{!"long long", !7, i64 0}
!17 = !{!10, !16, i64 24}
!18 = !{!10, !16, i64 32}
!19 = !{!10, !16, i64 40}
!20 = !{!21, !16, i64 0}
!21 = !{!"_ZTSSt4pairIxxE", !16, i64 0, !16, i64 8}
!22 = !{!21, !16, i64 8}


; 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"

%struct.node = type <{ %"class.std::vector", i64, i64, i64, i32, [4 x i8] }>
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@tree = external dso_local global [524288 x %struct.node], align 16

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN4node7combineERS_S0_(ptr noundef nonnull align 8 dereferenceable(52), ptr noundef nonnull align 8 dereferenceable(52), ptr noundef nonnull align 8 dereferenceable(52)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5shiftiii(i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local void @_Z15pointUpdateTreeiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #0 {
  %5 = add nsw i32 %2, 1
  %6 = icmp eq i32 %5, %3
  br i1 %6, label %7, label %34

7:                                                ; preds = %4
  %8 = sext i32 %1 to i64
  %9 = getelementptr inbounds [524288 x %struct.node], ptr @tree, i64 0, i64 %8
  %10 = getelementptr inbounds i8, ptr %9, i64 48
  %11 = load i32, ptr %10, align 8, !tbaa !5
  %12 = add nsw i32 %11, 1
  store i32 %12, ptr %10, align 8, !tbaa !5
  %13 = sext i32 %12 to i64
  %14 = tail call noundef i64 @_ZNKSt6vectorISt4pairIxxESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %9) #2
  %15 = icmp eq i64 %14, %13
  br i1 %15, label %16, label %21

16:                                               ; preds = %7
  %17 = getelementptr inbounds i8, ptr %9, i64 24
  store i64 1125899906842624, ptr %17, align 8, !tbaa !16
  %18 = getelementptr inbounds i8, ptr %9, i64 32
  store i64 1125899906842624, ptr %18, align 8, !tbaa !17
  %19 = sext i32 %0 to i64
  %20 = getelementptr inbounds i8, ptr %9, i64 40
  store i64 %19, ptr %20, align 8, !tbaa !18
  br label %49

21:                                               ; preds = %7
  %22 = load i32, ptr %10, align 8, !tbaa !5
  %23 = sext i32 %22 to i64
  %24 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %9, i64 noundef %23) #2
  %25 = load i64, ptr %24, align 8, !tbaa !19
  %26 = getelementptr inbounds i8, ptr %9, i64 40
  %27 = load i64, ptr %26, align 8, !tbaa !18
  %28 = add nsw i64 %27, %25
  %29 = getelementptr inbounds i8, ptr %9, i64 24
  store i64 %28, ptr %29, align 8, !tbaa !16
  %30 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %9, i64 noundef %23) #2
  %31 = getelementptr inbounds i8, ptr %30, i64 8
  %32 = load i64, ptr %31, align 8, !tbaa !21
  %33 = getelementptr inbounds i8, ptr %9, i64 32
  store i64 %32, ptr %33, align 8, !tbaa !17
  br label %49

34:                                               ; preds = %4
  tail call void @_Z5shiftiii(i32 noundef %1, i32 noundef %2, i32 noundef %3)
  %35 = shl i32 %1, 1
  %36 = or disjoint i32 %35, 1
  %37 = add nsw i32 %3, %2
  %38 = ashr i32 %37, 1
  %39 = icmp sgt i32 %38, %0
  br i1 %39, label %40, label %41

40:                                               ; preds = %34
  tail call void @_Z15pointUpdateTreeiiii(i32 noundef %0, i32 noundef %35, i32 noundef %2, i32 noundef %38)
  br label %42

41:                                               ; preds = %34
  tail call void @_Z15pointUpdateTreeiiii(i32 noundef %0, i32 noundef %36, i32 noundef %38, i32 noundef %3)
  br label %42

42:                                               ; preds = %41, %40
  %43 = sext i32 %1 to i64
  %44 = getelementptr inbounds [524288 x %struct.node], ptr @tree, i64 0, i64 %43
  %45 = sext i32 %35 to i64
  %46 = getelementptr inbounds [524288 x %struct.node], ptr @tree, i64 0, i64 %45
  %47 = sext i32 %36 to i64
  %48 = getelementptr inbounds [524288 x %struct.node], ptr @tree, i64 0, i64 %47
  tail call void @_ZN4node7combineERS_S0_(ptr noundef nonnull align 8 dereferenceable(52) %44, ptr noundef nonnull align 8 dereferenceable(52) %46, ptr noundef nonnull align 8 dereferenceable(52) %48)
  br label %49

49:                                               ; preds = %16, %21, %42
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorISt4pairIxxESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #1 align 2

attributes #0 = { 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 #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 = { 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, !15, i64 48}
!6 = !{!"_ZTS4node", !7, i64 0, !14, i64 24, !14, i64 32, !14, i64 40, !15, i64 48}
!7 = !{!"_ZTSSt6vectorISt4pairIxxESaIS1_EE", !8, i64 0}
!8 = !{!"_ZTSSt12_Vector_baseISt4pairIxxESaIS1_EE", !9, i64 0}
!9 = !{!"_ZTSNSt12_Vector_baseISt4pairIxxESaIS1_EE12_Vector_implE", !10, i64 0}
!10 = !{!"_ZTSNSt12_Vector_baseISt4pairIxxESaIS1_EE17_Vector_impl_dataE", !11, i64 0, !11, i64 8, !11, i64 16}
!11 = !{!"any pointer", !12, i64 0}
!12 = !{!"omnipotent char", !13, i64 0}
!13 = !{!"Simple C++ TBAA"}
!14 = !{!"long long", !12, i64 0}
!15 = !{!"int", !12, i64 0}
!16 = !{!6, !14, i64 24}
!17 = !{!6, !14, i64 32}
!18 = !{!6, !14, i64 40}
!19 = !{!20, !14, i64 0}
!20 = !{!"_ZTSSt4pairIxxE", !14, i64 0, !14, i64 8}
!21 = !{!20, !14, i64 8}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass