; LLVM IR from eyangch/competitive-programming :: CSES/Sorting_and_Searching (sum_of_four_values)

; 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.std::pair" = type { i32, i32 }
%"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" }

@N = external dso_local global i32, align 4
@x = external dso_local global i32, align 4
@a = external dso_local global [1000 x %"struct.std::pair"], align 16
@_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
@.str.1 = external hidden unnamed_addr constant [11 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %9 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) @N)
  %10 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %9, ptr noundef nonnull align 4 dereferenceable(4) @x)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #5
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %11

11:                                               ; preds = %28, %0
  %12 = load i32, ptr %2, align 4, !tbaa !5
  %13 = load i32, ptr @N, align 4, !tbaa !5
  %14 = icmp slt i32 %12, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  br label %31

16:                                               ; preds = %11
  %17 = load i32, ptr %2, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds [1000 x %"struct.std::pair"], ptr @a, i64 0, i64 %18
  %20 = getelementptr inbounds %"struct.std::pair", ptr %19, i32 0, i32 0
  %21 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %20)
  %22 = load i32, ptr %2, align 4, !tbaa !5
  %23 = add nsw i32 %22, 1
  %24 = load i32, ptr %2, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [1000 x %"struct.std::pair"], ptr @a, i64 0, i64 %25
  %27 = getelementptr inbounds %"struct.std::pair", ptr %26, i32 0, i32 1
  store i32 %23, ptr %27, align 4, !tbaa !9
  br label %28

28:                                               ; preds = %16
  %29 = load i32, ptr %2, align 4, !tbaa !5
  %30 = add nsw i32 %29, 1
  store i32 %30, ptr %2, align 4, !tbaa !5
  br label %11, !llvm.loop !11

31:                                               ; preds = %15
  %32 = load i32, ptr @N, align 4, !tbaa !5
  %33 = sext i32 %32 to i64
  %34 = getelementptr inbounds %"struct.std::pair", ptr @a, i64 %33
  call void @_ZSt4sortIPSt4pairIiiEEvT_S3_(ptr noundef @a, ptr noundef %34)
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #5
  store i32 0, ptr %3, align 4, !tbaa !5
  br label %35

35:                                               ; preds = %138, %31
  %36 = load i32, ptr %3, align 4, !tbaa !5
  %37 = load i32, ptr @N, align 4, !tbaa !5
  %38 = icmp slt i32 %36, %37
  br i1 %38, label %40, label %39

39:                                               ; preds = %35
  store i32 5, ptr %4, align 4
  br label %141

40:                                               ; preds = %35
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #5
  %41 = load i32, ptr %3, align 4, !tbaa !5
  %42 = add nsw i32 %41, 1
  store i32 %42, ptr %5, align 4, !tbaa !5
  br label %43

43:                                               ; preds = %132, %40
  %44 = load i32, ptr %5, align 4, !tbaa !5
  %45 = load i32, ptr @N, align 4, !tbaa !5
  %46 = icmp slt i32 %44, %45
  br i1 %46, label %48, label %47

47:                                               ; preds = %43
  store i32 8, ptr %4, align 4
  br label %135

48:                                               ; preds = %43
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #5
  %49 = load i32, ptr %5, align 4, !tbaa !5
  %50 = add nsw i32 %49, 1
  store i32 %50, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #5
  %51 = load i32, ptr @N, align 4, !tbaa !5
  %52 = sub nsw i32 %51, 1
  store i32 %52, ptr %7, align 4, !tbaa !5
  br label %53

53:                                               ; preds = %127, %48
  %54 = load i32, ptr %6, align 4, !tbaa !5
  %55 = load i32, ptr %7, align 4, !tbaa !5
  %56 = icmp slt i32 %54, %55
  br i1 %56, label %57, label %128

57:                                               ; preds = %53
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #5
  %58 = load i32, ptr %3, align 4, !tbaa !5
  %59 = sext i32 %58 to i64
  %60 = getelementptr inbounds [1000 x %"struct.std::pair"], ptr @a, i64 0, i64 %59
  %61 = getelementptr inbounds %"struct.std::pair", ptr %60, i32 0, i32 0
  %62 = load i32, ptr %61, align 8, !tbaa !13
  %63 = load i32, ptr %5, align 4, !tbaa !5
  %64 = sext i32 %63 to i64
  %65 = getelementptr inbounds [1000 x %"struct.std::pair"], ptr @a, i64 0, i64 %64
  %66 = getelementptr inbounds %"struct.std::pair", ptr %65, i32 0, i32 0
  %67 = load i32, ptr %66, align 8, !tbaa !13
  %68 = add nsw i32 %62, %67
  %69 = load i32, ptr %6, align 4, !tbaa !5
  %70 = sext i32 %69 to i64
  %71 = getelementptr inbounds [1000 x %"struct.std::pair"], ptr @a, i64 0, i64 %70
  %72 = getelementptr inbounds %"struct.std::pair", ptr %71, i32 0, i32 0
  %73 = load i32, ptr %72, align 8, !tbaa !13
  %74 = add nsw i32 %68, %73
  %75 = load i32, ptr %7, align 4, !tbaa !5
  %76 = sext i32 %75 to i64
  %77 = getelementptr inbounds [1000 x %"struct.std::pair"], ptr @a, i64 0, i64 %76
  %78 = getelementptr inbounds %"struct.std::pair", ptr %77, i32 0, i32 0
  %79 = load i32, ptr %78, align 8, !tbaa !13
  %80 = add nsw i32 %74, %79
  store i32 %80, ptr %8, align 4, !tbaa !5
  %81 = load i32, ptr %8, align 4, !tbaa !5
  %82 = load i32, ptr @x, align 4, !tbaa !5
  %83 = icmp eq i32 %81, %82
  br i1 %83, label %84, label %113

84:                                               ; preds = %57
  %85 = load i32, ptr %3, align 4, !tbaa !5
  %86 = sext i32 %85 to i64
  %87 = getelementptr inbounds [1000 x %"struct.std::pair"], ptr @a, i64 0, i64 %86
  %88 = getelementptr inbounds %"struct.std::pair", ptr %87, i32 0, i32 1
  %89 = load i32, ptr %88, align 4, !tbaa !9
  %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)
  %92 = load i32, ptr %5, align 4, !tbaa !5
  %93 = sext i32 %92 to i64
  %94 = getelementptr inbounds [1000 x %"struct.std::pair"], ptr @a, i64 0, i64 %93
  %95 = getelementptr inbounds %"struct.std::pair", ptr %94, i32 0, i32 1
  %96 = load i32, ptr %95, align 4, !tbaa !9
  %97 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %91, i32 noundef %96)
  %98 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %97, ptr noundef @.str)
  %99 = load i32, ptr %6, align 4, !tbaa !5
  %100 = sext i32 %99 to i64
  %101 = getelementptr inbounds [1000 x %"struct.std::pair"], ptr @a, i64 0, i64 %100
  %102 = getelementptr inbounds %"struct.std::pair", ptr %101, i32 0, i32 1
  %103 = load i32, ptr %102, align 4, !tbaa !9
  %104 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %98, i32 noundef %103)
  %105 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %104, ptr noundef @.str)
  %106 = load i32, ptr %7, align 4, !tbaa !5
  %107 = sext i32 %106 to i64
  %108 = getelementptr inbounds [1000 x %"struct.std::pair"], ptr @a, i64 0, i64 %107
  %109 = getelementptr inbounds %"struct.std::pair", ptr %108, i32 0, i32 1
  %110 = load i32, ptr %109, align 4, !tbaa !9
  %111 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %105, i32 noundef %110)
  %112 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %111, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %4, align 4
  br label %125

113:                                              ; preds = %57
  %114 = load i32, ptr %8, align 4, !tbaa !5
  %115 = load i32, ptr @x, align 4, !tbaa !5
  %116 = icmp slt i32 %114, %115
  br i1 %116, label %117, label %120

117:                                              ; preds = %113
  %118 = load i32, ptr %6, align 4, !tbaa !5
  %119 = add nsw i32 %118, 1
  store i32 %119, ptr %6, align 4, !tbaa !5
  br label %123

120:                                              ; preds = %113
  %121 = load i32, ptr %7, align 4, !tbaa !5
  %122 = add nsw i32 %121, -1
  store i32 %122, ptr %7, align 4, !tbaa !5
  br label %123

123:                                              ; preds = %120, %117
  br label %124

124:                                              ; preds = %123
  store i32 0, ptr %4, align 4
  br label %125

125:                                              ; preds = %124, %84
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  %126 = load i32, ptr %4, align 4
  switch i32 %126, label %129 [
    i32 0, label %127
  ]

127:                                              ; preds = %125
  br label %53, !llvm.loop !14

128:                                              ; preds = %53
  store i32 0, ptr %4, align 4
  br label %129

129:                                              ; preds = %128, %125
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  %130 = load i32, ptr %4, align 4
  switch i32 %130, label %135 [
    i32 0, label %131
  ]

131:                                              ; preds = %129
  br label %132

132:                                              ; preds = %131
  %133 = load i32, ptr %5, align 4, !tbaa !5
  %134 = add nsw i32 %133, 1
  store i32 %134, ptr %5, align 4, !tbaa !5
  br label %43, !llvm.loop !15

135:                                              ; preds = %129, %47
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  %136 = load i32, ptr %4, align 4
  switch i32 %136, label %141 [
    i32 8, label %137
  ]

137:                                              ; preds = %135
  br label %138

138:                                              ; preds = %137
  %139 = load i32, ptr %3, align 4, !tbaa !5
  %140 = add nsw i32 %139, 1
  store i32 %140, ptr %3, align 4, !tbaa !5
  br label %35, !llvm.loop !16

141:                                              ; preds = %135, %39
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  %142 = load i32, ptr %4, align 4
  switch i32 %142, label %148 [
    i32 5, label %143
    i32 1, label %146
  ]

143:                                              ; preds = %141
  %144 = 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)
  %145 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %144, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  br label %146

146:                                              ; preds = %143, %141
  %147 = load i32, ptr %1, align 4
  ret i32 %147

148:                                              ; preds = %141
  unreachable
}

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIPSt4pairIiiEEvT_S3_(ptr noundef, ptr noundef) #3

; 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) #3

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #1

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #4 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)) #3

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 = { "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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 #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 }

!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 4}
!10 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!10, !6, i64 0}
!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"

%"struct.std::pair" = type { i32, i32 }
%"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" }

@N = external dso_local global i32, align 4
@x = external dso_local global i32, align 4
@a = external dso_local global [1000 x %"struct.std::pair"], align 16
@_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
@.str.1 = external hidden unnamed_addr constant [11 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) @N)
  %2 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %1, ptr noundef nonnull align 4 dereferenceable(4) @x)
  %3 = load i32, ptr @N, align 4, !tbaa !5
  %4 = icmp sgt i32 %3, 0
  br i1 %4, label %.lr.ph, label %.._crit_edge_crit_edge

.._crit_edge_crit_edge:                           ; preds = %0
  %.pre = sext i32 %3 to i64
  br label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %.._crit_edge_crit_edge
  %.pre-phi = phi i64 [ %.pre, %.._crit_edge_crit_edge ], [ %16, %.lr.ph ]
  %5 = getelementptr inbounds %"struct.std::pair", ptr @a, i64 %.pre-phi
  tail call void @_ZSt4sortIPSt4pairIiiEEvT_S3_(ptr noundef nonnull @a, ptr noundef nonnull %5)
  %6 = load i32, ptr @N, align 4, !tbaa !5
  %7 = icmp sgt i32 %6, 0
  br i1 %7, label %.lr.ph81.preheader, label %.thread53

.lr.ph81.preheader:                               ; preds = %._crit_edge
  %8 = zext nneg i32 %6 to i64
  %9 = add nsw i32 %6, -1
  %10 = load i32, ptr @x, align 4
  %wide.trip.count = zext nneg i32 %6 to i64
  br label %.lr.ph81

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
  %11 = getelementptr inbounds [1000 x %"struct.std::pair"], ptr @a, i64 0, i64 %indvars.iv
  %12 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %11)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %13 = getelementptr inbounds i8, ptr %11, i64 4
  %14 = trunc nuw nsw i64 %indvars.iv.next to i32
  store i32 %14, ptr %13, align 4, !tbaa !9
  %15 = load i32, ptr @N, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = icmp slt i64 %indvars.iv.next, %16
  br i1 %17, label %.lr.ph, label %._crit_edge, !llvm.loop !11

.lr.ph81:                                         ; preds = %.lr.ph81.preheader, %.critedge58.backedge
  %indvars.iv94 = phi i64 [ 0, %.lr.ph81.preheader ], [ %indvars.iv.next95, %.critedge58.backedge ]
  %indvars.iv89 = phi i64 [ 1, %.lr.ph81.preheader ], [ %indvars.iv.next90, %.critedge58.backedge ]
  %indvars.iv.next95 = add nuw nsw i64 %indvars.iv94, 1
  %.not5072 = icmp ult i64 %indvars.iv.next95, %8
  br i1 %.not5072, label %.lr.ph75, label %.thread53

.lr.ph75:                                         ; preds = %.lr.ph81
  %18 = getelementptr inbounds [1000 x %"struct.std::pair"], ptr @a, i64 0, i64 %indvars.iv94
  br label %19

.critedge.loopexit:                               ; preds = %34, %19
  %exitcond.not = icmp eq i64 %indvars.iv.next92, %wide.trip.count
  br i1 %exitcond.not, label %.critedge58.backedge, label %19, !llvm.loop !13

19:                                               ; preds = %.lr.ph75, %.critedge.loopexit
  %indvars.iv91 = phi i64 [ %indvars.iv89, %.lr.ph75 ], [ %indvars.iv.next92, %.critedge.loopexit ]
  %indvars.iv.next92 = add nuw nsw i64 %indvars.iv91, 1
  %20 = trunc nuw i64 %indvars.iv.next92 to i32
  %.not4967 = icmp sgt i32 %9, %20
  br i1 %.not4967, label %.lr.ph71, label %.critedge.loopexit

.lr.ph71:                                         ; preds = %19
  %21 = load i32, ptr %18, align 8, !tbaa !14
  %22 = getelementptr inbounds [1000 x %"struct.std::pair"], ptr @a, i64 0, i64 %indvars.iv91
  %23 = load i32, ptr %22, align 8, !tbaa !14
  %24 = add nsw i32 %23, %21
  br label %25

25:                                               ; preds = %.lr.ph71, %34
  %.03269 = phi i32 [ %9, %.lr.ph71 ], [ %.133, %34 ]
  %.03568 = phi i32 [ %20, %.lr.ph71 ], [ %.136, %34 ]
  %26 = zext nneg i32 %.03568 to i64
  %27 = getelementptr inbounds [1000 x %"struct.std::pair"], ptr @a, i64 0, i64 %26
  %28 = load i32, ptr %27, align 8, !tbaa !14
  %29 = add nsw i32 %24, %28
  %30 = sext i32 %.03269 to i64
  %31 = getelementptr inbounds [1000 x %"struct.std::pair"], ptr @a, i64 0, i64 %30
  %32 = load i32, ptr %31, align 8, !tbaa !14
  %33 = add nsw i32 %29, %32
  %.not = icmp eq i32 %33, %10
  br i1 %.not, label %.loopexit, label %34

34:                                               ; preds = %25
  %35 = icmp slt i32 %33, %10
  %36 = zext i1 %35 to i32
  %.136 = add nuw nsw i32 %.03568, %36
  %not. = xor i1 %35, true
  %37 = sext i1 %not. to i32
  %.133 = add nsw i32 %.03269, %37
  %.not49 = icmp slt i32 %.136, %.133
  br i1 %.not49, label %25, label %.critedge.loopexit

.loopexit:                                        ; preds = %25
  %gep = getelementptr inbounds [1000 x %"struct.std::pair"], ptr getelementptr inbounds (i8, ptr @a, i64 4), i64 0, i64 %indvars.iv94
  %38 = load i32, ptr %gep, align 4, !tbaa !9
  %39 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %38)
  %40 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %39, ptr noundef nonnull @.str)
  %gep76 = getelementptr inbounds [1000 x %"struct.std::pair"], ptr getelementptr inbounds (i8, ptr @a, i64 4), i64 0, i64 %indvars.iv91
  %41 = load i32, ptr %gep76, align 4, !tbaa !9
  %42 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %40, i32 noundef %41)
  %43 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %42, ptr noundef nonnull @.str)
  %gep77 = getelementptr [1000 x %"struct.std::pair"], ptr getelementptr inbounds (i8, ptr @a, i64 4), i64 0, i64 %26
  %44 = load i32, ptr %gep77, align 4, !tbaa !9
  %45 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %43, i32 noundef %44)
  %46 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %45, ptr noundef nonnull @.str)
  %gep78 = getelementptr [1000 x %"struct.std::pair"], ptr getelementptr inbounds (i8, ptr @a, i64 4), i64 0, i64 %30
  %47 = load i32, ptr %gep78, align 4, !tbaa !9
  %48 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %46, i32 noundef %47)
  br label %50

.critedge58.backedge:                             ; preds = %.critedge.loopexit
  %indvars.iv.next90 = add nuw nsw i64 %indvars.iv89, 1
  br i1 %.not5072, label %.lr.ph81, label %.thread53, !llvm.loop !15

.thread53:                                        ; preds = %.lr.ph81, %.critedge58.backedge, %._crit_edge
  %49 = 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)
  br label %50

50:                                               ; preds = %.loopexit, %.thread53
  %.sink = phi ptr [ %48, %.loopexit ], [ %49, %.thread53 ]
  %51 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %.sink, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  ret i32 0
}

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 #1

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIPSt4pairIiiEEvT_S3_(ptr noundef, ptr noundef) local_unnamed_addr #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 #2

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #1

; 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)) #2

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 = { "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 = { 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 #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" }

!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 4}
!10 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!14 = !{!10, !6, i64 0}
!15 = distinct !{!15, !12}


; Effective O3 passes: BDCEPass,ConstraintEliminationPass,CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopInstSimplifyPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass