; LLVM IR from eyangch/competitive-programming :: CSES/Additional_Problems (maximum_xor_subarray)

; 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" }
%"class.std::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }
%"class.std::bitset" = type { %"struct.std::_Base_bitset" }
%"struct.std::_Base_bitset" = type { i64 }

@root = external dso_local global ptr, align 8
@N = external dso_local global i32, align 4
@pfx = external dso_local global [200000 x i32], 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

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca %"class.std::__cxx11::basic_string", align 8
  %6 = alloca %"class.std::bitset", align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca %"class.std::__cxx11::basic_string", align 8
  %10 = alloca %"class.std::bitset", align 8
  %11 = alloca i32, align 4
  %12 = alloca %"class.std::__cxx11::basic_string", align 8
  %13 = alloca %"class.std::__cxx11::basic_string", align 8
  store i32 0, ptr %1, align 4
  %14 = call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %15 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %16 = getelementptr i8, ptr %15, i64 -24
  %17 = load i64, ptr %16, align 8
  %18 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %17
  %19 = call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %18, ptr noundef null)
  %20 = 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)
  %21 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %20, ptr noundef nonnull align 4 dereferenceable(4) @pfx)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #9
  store i32 1, ptr %2, align 4, !tbaa !8
  br label %22

22:                                               ; preds = %42, %0
  %23 = load i32, ptr %2, align 4, !tbaa !8
  %24 = load i32, ptr @N, align 4, !tbaa !8
  %25 = icmp slt i32 %23, %24
  br i1 %25, label %27, label %26

26:                                               ; preds = %22
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #9
  br label %45

27:                                               ; preds = %22
  %28 = load i32, ptr %2, align 4, !tbaa !8
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds [200000 x i32], ptr @pfx, i64 0, i64 %29
  %31 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %30)
  %32 = load i32, ptr %2, align 4, !tbaa !8
  %33 = sub nsw i32 %32, 1
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds [200000 x i32], ptr @pfx, i64 0, i64 %34
  %36 = load i32, ptr %35, align 4, !tbaa !8
  %37 = load i32, ptr %2, align 4, !tbaa !8
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds [200000 x i32], ptr @pfx, i64 0, i64 %38
  %40 = load i32, ptr %39, align 4, !tbaa !8
  %41 = xor i32 %40, %36
  store i32 %41, ptr %39, align 4, !tbaa !8
  br label %42

42:                                               ; preds = %27
  %43 = load i32, ptr %2, align 4, !tbaa !8
  %44 = add nsw i32 %43, 1
  store i32 %44, ptr %2, align 4, !tbaa !8
  br label %22, !llvm.loop !11

45:                                               ; preds = %26
  %46 = call noalias noundef nonnull ptr @_Znwm(i64 noundef 16) #10
  invoke void @_ZN4trieC2Ev(ptr noundef nonnull align 8 dereferenceable(16) %46)
          to label %47 unwind label %55

47:                                               ; preds = %45
  store ptr %46, ptr @root, align 8, !tbaa !13
  %48 = load ptr, ptr @root, align 8, !tbaa !13
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #9
  call void @_ZNSt6bitsetILm32EEC2Ey(ptr noundef nonnull align 8 dereferenceable(8) %6, i64 noundef 0) #9
  call void @_ZNKSt6bitsetILm32EE9to_stringB5cxx11Ev(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %5, ptr noundef nonnull align 8 dereferenceable(8) %6)
  invoke void @_ZN4trie6insertENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(16) %48, ptr noundef %5)
          to label %49 unwind label %59

49:                                               ; preds = %47
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %5) #9
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #9
  store i32 0, ptr %7, align 4, !tbaa !8
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #9
  store i32 0, ptr %8, align 4, !tbaa !8
  br label %50

50:                                               ; preds = %79, %49
  %51 = load i32, ptr %8, align 4, !tbaa !8
  %52 = load i32, ptr @N, align 4, !tbaa !8
  %53 = icmp slt i32 %51, %52
  br i1 %53, label %63, label %54

54:                                               ; preds = %50
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #9
  br label %100

55:                                               ; preds = %45
  %56 = landingpad { ptr, i32 }
          cleanup
  %57 = extractvalue { ptr, i32 } %56, 0
  store ptr %57, ptr %3, align 8
  %58 = extractvalue { ptr, i32 } %56, 1
  store i32 %58, ptr %4, align 4
  call void @_ZdlPvm(ptr noundef %46, i64 noundef 16) #11
  br label %104

59:                                               ; preds = %47
  %60 = landingpad { ptr, i32 }
          cleanup
  %61 = extractvalue { ptr, i32 } %60, 0
  store ptr %61, ptr %3, align 8
  %62 = extractvalue { ptr, i32 } %60, 1
  store i32 %62, ptr %4, align 4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %5) #9
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #9
  br label %104

63:                                               ; preds = %50
  call void @llvm.lifetime.start.p0(i64 32, ptr %9) #9
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #9
  %64 = load i32, ptr %8, align 4, !tbaa !8
  %65 = sext i32 %64 to i64
  %66 = getelementptr inbounds [200000 x i32], ptr @pfx, i64 0, i64 %65
  %67 = load i32, ptr %66, align 4, !tbaa !8
  %68 = sext i32 %67 to i64
  call void @_ZNSt6bitsetILm32EEC2Ey(ptr noundef nonnull align 8 dereferenceable(8) %10, i64 noundef %68) #9
  call void @_ZNKSt6bitsetILm32EE9to_stringB5cxx11Ev(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %9, ptr noundef nonnull align 8 dereferenceable(8) %10)
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #9
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #9
  %69 = load ptr, ptr @root, align 8, !tbaa !13
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %12, ptr noundef nonnull align 8 dereferenceable(32) %9)
          to label %70 unwind label %82

70:                                               ; preds = %63
  %71 = invoke noundef i32 @_ZN4trie6searchENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(16) %69, ptr noundef %12)
          to label %72 unwind label %86

72:                                               ; preds = %70
  store i32 %71, ptr %11, align 4, !tbaa !8
  %73 = invoke noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %7, ptr noundef nonnull align 4 dereferenceable(4) %11)
          to label %74 unwind label %86

74:                                               ; preds = %72
  %75 = load i32, ptr %73, align 4, !tbaa !8
  store i32 %75, ptr %7, align 4, !tbaa !8
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %12) #9
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #9
  %76 = load ptr, ptr @root, align 8, !tbaa !13
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %13, ptr noundef nonnull align 8 dereferenceable(32) %9)
          to label %77 unwind label %91

77:                                               ; preds = %74
  invoke void @_ZN4trie6insertENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(16) %76, ptr noundef %13)
          to label %78 unwind label %95

78:                                               ; preds = %77
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %13) #9
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %9) #9
  call void @llvm.lifetime.end.p0(i64 32, ptr %9) #9
  br label %79

79:                                               ; preds = %78
  %80 = load i32, ptr %8, align 4, !tbaa !8
  %81 = add nsw i32 %80, 1
  store i32 %81, ptr %8, align 4, !tbaa !8
  br label %50, !llvm.loop !15

82:                                               ; preds = %63
  %83 = landingpad { ptr, i32 }
          cleanup
  %84 = extractvalue { ptr, i32 } %83, 0
  store ptr %84, ptr %3, align 8
  %85 = extractvalue { ptr, i32 } %83, 1
  store i32 %85, ptr %4, align 4
  br label %90

86:                                               ; preds = %72, %70
  %87 = landingpad { ptr, i32 }
          cleanup
  %88 = extractvalue { ptr, i32 } %87, 0
  store ptr %88, ptr %3, align 8
  %89 = extractvalue { ptr, i32 } %87, 1
  store i32 %89, ptr %4, align 4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %12) #9
  br label %90

90:                                               ; preds = %86, %82
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #9
  br label %99

91:                                               ; preds = %74
  %92 = landingpad { ptr, i32 }
          cleanup
  %93 = extractvalue { ptr, i32 } %92, 0
  store ptr %93, ptr %3, align 8
  %94 = extractvalue { ptr, i32 } %92, 1
  store i32 %94, ptr %4, align 4
  br label %99

95:                                               ; preds = %77
  %96 = landingpad { ptr, i32 }
          cleanup
  %97 = extractvalue { ptr, i32 } %96, 0
  store ptr %97, ptr %3, align 8
  %98 = extractvalue { ptr, i32 } %96, 1
  store i32 %98, ptr %4, align 4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %13) #9
  br label %99

99:                                               ; preds = %95, %91, %90
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %9) #9
  call void @llvm.lifetime.end.p0(i64 32, ptr %9) #9
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #9
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #9
  br label %104

100:                                              ; preds = %54
  %101 = load i32, ptr %7, align 4, !tbaa !8
  %102 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %101)
  %103 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %102, ptr noundef @.str)
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #9
  ret i32 0

104:                                              ; preds = %99, %59, %55
  %105 = load ptr, ptr %3, align 8
  %106 = load i32, ptr %4, align 4
  %107 = insertvalue { ptr, i32 } poison, ptr %105, 0
  %108 = insertvalue { ptr, i32 } %107, i32 %106, 1
  resume { ptr, i32 } %108
}

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) #1

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264), ptr noundef) #2 align 2

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) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN4trieC2Ev(ptr noundef nonnull align 8 dereferenceable(16)) unnamed_addr #2 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) #5

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN4trie6insertENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef) #6 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6bitsetILm32EEC2Ey(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNKSt6bitsetILm32EE9to_stringB5cxx11Ev(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(8)) #6 align 2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #7

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN4trie6searchENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef) #2 align 2

; Function Attrs: mustprogress uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #6 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) #8

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #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 = { "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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { 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 #5 = { nobuiltin nounwind "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 = { 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 #7 = { inlinehint 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 #8 = { 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 #9 = { nounwind }
attributes #10 = { builtin allocsize(0) }
attributes #11 = { builtin 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 = !{!14, !14, i64 0}
!14 = !{!"any pointer", !10, i64 0}
!15 = distinct !{!15, !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" }
%"class.std::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }
%"class.std::bitset" = type { %"struct.std::_Base_bitset" }
%"struct.std::_Base_bitset" = type { i64 }

@root = external dso_local local_unnamed_addr global ptr, align 8
@N = external dso_local global i32, align 4
@pfx = external dso_local global [200000 x i32], 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

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca %"class.std::__cxx11::basic_string", align 8
  %2 = alloca %"class.std::bitset", align 8
  %3 = alloca i32, align 4
  %4 = alloca %"class.std::__cxx11::basic_string", align 8
  %5 = alloca %"class.std::bitset", align 8
  %6 = alloca i32, align 4
  %7 = alloca %"class.std::__cxx11::basic_string", align 8
  %8 = alloca %"class.std::__cxx11::basic_string", align 8
  %9 = tail call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %10 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %11 = getelementptr i8, ptr %10, i64 -24
  %12 = load i64, ptr %11, align 8
  %13 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %12
  %14 = tail call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %13, ptr noundef null)
  %15 = 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)
  %16 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %15, ptr noundef nonnull align 4 dereferenceable(4) @pfx)
  %17 = load i32, ptr @N, align 4, !tbaa !8
  %18 = icmp sgt i32 %17, 1
  br i1 %18, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %0
  %19 = tail call noalias noundef nonnull dereferenceable(16) ptr @_Znwm(i64 noundef 16) #8
  tail call void @_ZN4trieC2Ev(ptr noundef nonnull align 8 dereferenceable(16) %19)
  store ptr %19, ptr @root, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #9
  call void @_ZNSt6bitsetILm32EEC2Ey(ptr noundef nonnull align 8 dereferenceable(8) %2, i64 noundef 0) #9
  call void @_ZNKSt6bitsetILm32EE9to_stringB5cxx11Ev(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %1, ptr noundef nonnull align 8 dereferenceable(8) %2)
  invoke void @_ZN4trie6insertENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(16) %19, ptr noundef nonnull %1)
          to label %30 unwind label %36

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 1, %0 ]
  %20 = getelementptr inbounds [200000 x i32], ptr @pfx, i64 0, i64 %indvars.iv
  %21 = 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) %20)
  %22 = add nsw i64 %indvars.iv, -1
  %23 = getelementptr inbounds [200000 x i32], ptr @pfx, i64 0, i64 %22
  %24 = load i32, ptr %23, align 4, !tbaa !8
  %25 = load i32, ptr %20, align 4, !tbaa !8
  %26 = xor i32 %25, %24
  store i32 %26, ptr %20, align 4, !tbaa !8
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %27 = load i32, ptr @N, align 4, !tbaa !8
  %28 = sext i32 %27 to i64
  %29 = icmp slt i64 %indvars.iv.next, %28
  br i1 %29, label %.lr.ph, label %._crit_edge, !llvm.loop !13

30:                                               ; preds = %._crit_edge
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %1) #9
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #9
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #9
  store i32 0, ptr %3, align 4, !tbaa !8
  %31 = load i32, ptr @N, align 4, !tbaa !8
  %32 = icmp sgt i32 %31, 0
  br i1 %32, label %.lr.ph18, label %._crit_edge19

._crit_edge19.loopexit:                           ; preds = %48
  %.pre = load i32, ptr %3, align 4, !tbaa !8
  br label %._crit_edge19

._crit_edge19:                                    ; preds = %._crit_edge19.loopexit, %30
  %33 = phi i32 [ %.pre, %._crit_edge19.loopexit ], [ 0, %30 ]
  %34 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %33)
  %35 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %34, ptr noundef nonnull @.str)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #9
  ret i32 0

36:                                               ; preds = %._crit_edge
  %37 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %1) #9
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #9
  br label %59

.lr.ph18:                                         ; preds = %30, %48
  %indvars.iv21 = phi i64 [ %indvars.iv.next22, %48 ], [ 0, %30 ]
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %4) #9
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #9
  %38 = getelementptr inbounds [200000 x i32], ptr @pfx, i64 0, i64 %indvars.iv21
  %39 = load i32, ptr %38, align 4, !tbaa !8
  %40 = sext i32 %39 to i64
  call void @_ZNSt6bitsetILm32EEC2Ey(ptr noundef nonnull align 8 dereferenceable(8) %5, i64 noundef %40) #9
  call void @_ZNKSt6bitsetILm32EE9to_stringB5cxx11Ev(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %4, ptr noundef nonnull align 8 dereferenceable(8) %5)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #9
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %6) #9
  %41 = load ptr, ptr @root, align 8, !tbaa !11
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %7, ptr noundef nonnull align 8 dereferenceable(32) %4)
          to label %42 unwind label %52

42:                                               ; preds = %.lr.ph18
  %43 = call noundef i32 @_ZN4trie6searchENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(16) %41, ptr noundef nonnull %7)
  store i32 %43, ptr %6, align 4, !tbaa !8
  %44 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %3, ptr noundef nonnull align 4 dereferenceable(4) %6)
  %45 = load i32, ptr %44, align 4, !tbaa !8
  store i32 %45, ptr %3, align 4, !tbaa !8
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #9
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #9
  %46 = load ptr, ptr @root, align 8, !tbaa !11
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %8, ptr noundef nonnull align 8 dereferenceable(32) %4)
          to label %47 unwind label %54

47:                                               ; preds = %42
  invoke void @_ZN4trie6insertENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(16) %46, ptr noundef nonnull %8)
          to label %48 unwind label %56

48:                                               ; preds = %47
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %8) #9
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #9
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #9
  %indvars.iv.next22 = add nuw nsw i64 %indvars.iv21, 1
  %49 = load i32, ptr @N, align 4, !tbaa !8
  %50 = sext i32 %49 to i64
  %51 = icmp slt i64 %indvars.iv.next22, %50
  br i1 %51, label %.lr.ph18, label %._crit_edge19.loopexit, !llvm.loop !15

52:                                               ; preds = %.lr.ph18
  %53 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #9
  br label %58

54:                                               ; preds = %42
  %55 = landingpad { ptr, i32 }
          cleanup
  br label %58

56:                                               ; preds = %47
  %57 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %8) #9
  br label %58

58:                                               ; preds = %56, %54, %52
  %.pn = phi { ptr, i32 } [ %57, %56 ], [ %55, %54 ], [ %53, %52 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #9
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #9
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #9
  br label %59

59:                                               ; preds = %58, %36
  %.pn.pn = phi { ptr, i32 } [ %.pn, %58 ], [ %37, %36 ]
  resume { ptr, i32 } %.pn.pn
}

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264), ptr noundef) local_unnamed_addr #2 align 2

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: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) local_unnamed_addr #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN4trieC2Ev(ptr noundef nonnull align 8 dereferenceable(16)) unnamed_addr #2 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN4trie6insertENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef) local_unnamed_addr #5 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6bitsetILm32EEC2Ey(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNKSt6bitsetILm32EE9to_stringB5cxx11Ev(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #5 align 2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #6

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN4trie6searchENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #5 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 #7

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #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 = { "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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { 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 #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 = { inlinehint 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 #7 = { 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 #8 = { builtin allocsize(0) }
attributes #9 = { 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 = !{!12, !12, i64 0}
!12 = !{!"any pointer", !10, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}


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