; LLVM IR from TheAlgorithms/C-Plus-Plus :: operations_on_datastructures (trie_multiple_search)

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

%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"struct.std::pair" = type { i32, %"class.std::__cxx11::basic_string" }
%"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] }

@_ZSt4cout = external global %"class.std::basic_ostream", align 8

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

; 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 noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #1 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

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(32)) #2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN28operations_on_datastructures15trie_operations5Tnode14SelectionTop_3EPSt14priority_queueISt4pairIiNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEESt6vectorISA_SaISA_EESt4lessISA_EE(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef %1) #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %7 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = call noundef i64 @_ZNKSt14priority_queueISt4pairIiNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEESt6vectorIS7_SaIS7_EESt4lessIS7_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(25) %8)
  %10 = trunc i64 %9 to i32
  store i32 %10, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  store i32 0, ptr %6, align 4, !tbaa !9
  %11 = load i32, ptr %5, align 4, !tbaa !9
  %12 = icmp slt i32 %11, 3
  br i1 %12, label %13, label %15

13:                                               ; preds = %2
  %14 = load i32, ptr %5, align 4, !tbaa !9
  br label %16

15:                                               ; preds = %2
  br label %16

16:                                               ; preds = %15, %13
  %17 = phi i32 [ %14, %13 ], [ 3, %15 ]
  store i32 %17, ptr %6, align 4, !tbaa !9
  br label %18

18:                                               ; preds = %22, %16
  %19 = load i32, ptr %6, align 4, !tbaa !9
  %20 = add nsw i32 %19, -1
  store i32 %20, ptr %6, align 4, !tbaa !9
  %21 = icmp ne i32 %19, 0
  br i1 %21, label %22, label %29

22:                                               ; preds = %18
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = call noundef nonnull align 8 dereferenceable(40) ptr @_ZNKSt14priority_queueISt4pairIiNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEESt6vectorIS7_SaIS7_EESt4lessIS7_EE3topEv(ptr noundef nonnull align 8 dereferenceable(25) %23)
  %25 = getelementptr inbounds %"struct.std::pair", ptr %24, i32 0, i32 1
  %26 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull align 8 dereferenceable(32) %25)
  %27 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %26, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  %28 = load ptr, ptr %4, align 8, !tbaa !5
  call void @_ZNSt14priority_queueISt4pairIiNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEESt6vectorIS7_SaIS7_EESt4lessIS7_EE3popEv(ptr noundef nonnull align 8 dereferenceable(25) %28)
  br label %18, !llvm.loop !11

29:                                               ; preds = %18
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt14priority_queueISt4pairIiNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEESt6vectorIS7_SaIS7_EESt4lessIS7_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(25)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(40) ptr @_ZNKSt14priority_queueISt4pairIiNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEESt6vectorIS7_SaIS7_EESt4lessIS7_EE3topEv(ptr noundef nonnull align 8 dereferenceable(25)) #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt14priority_queueISt4pairIiNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEESt6vectorIS7_SaIS7_EESt4lessIS7_EE3popEv(ptr noundef nonnull align 8 dereferenceable(25)) #1 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 = { 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 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 #4 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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

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

@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; 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 #0 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)) #1

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #1

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN28operations_on_datastructures15trie_operations5Tnode14SelectionTop_3EPSt14priority_queueISt4pairIiNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEESt6vectorISA_SaISA_EESt4lessISA_EE(ptr nocapture noundef nonnull readnone align 8 dereferenceable(32) %0, ptr noundef nonnull %1) local_unnamed_addr #0 align 2 {
  %3 = tail call noundef i64 @_ZNKSt14priority_queueISt4pairIiNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEESt6vectorIS7_SaIS7_EESt4lessIS7_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(25) %1)
  %4 = trunc i64 %3 to i32
  %.not6 = icmp eq i32 %4, 0
  br i1 %.not6, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %2
  %5 = tail call i32 @llvm.smin.i32(i32 %4, i32 3)
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %.07 = phi i32 [ %6, %.lr.ph ], [ %5, %.lr.ph.preheader ]
  %6 = add nsw i32 %.07, -1
  %7 = tail call noundef nonnull align 8 dereferenceable(40) ptr @_ZNKSt14priority_queueISt4pairIiNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEESt6vectorIS7_SaIS7_EESt4lessIS7_EE3topEv(ptr noundef nonnull align 8 dereferenceable(25) %1)
  %8 = getelementptr inbounds i8, ptr %7, i64 8
  %9 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull align 8 dereferenceable(32) %8)
  %10 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %9, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  tail call void @_ZNSt14priority_queueISt4pairIiNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEESt6vectorIS7_SaIS7_EESt4lessIS7_EE3popEv(ptr noundef nonnull align 8 dereferenceable(25) %1)
  %.not = icmp eq i32 %6, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !5

._crit_edge:                                      ; preds = %.lr.ph, %2
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt14priority_queueISt4pairIiNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEESt6vectorIS7_SaIS7_EESt4lessIS7_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(25)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(40) ptr @_ZNKSt14priority_queueISt4pairIiNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEESt6vectorIS7_SaIS7_EESt4lessIS7_EE3topEv(ptr noundef nonnull align 8 dereferenceable(25)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt14priority_queueISt4pairIiNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEESt6vectorIS7_SaIS7_EESt4lessIS7_EE3popEv(ptr noundef nonnull align 8 dereferenceable(25)) local_unnamed_addr #0 align 2

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smin.i32(i32, i32) #3

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 = { inlinehint mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #2 = { 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 speculatable willreturn memory(none) }

!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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


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