; LLVM IR from ADJA/algos :: Strings/UkkonenSuffixTree.ll (Z9find_edgeii)

; 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::__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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<node, std::allocator<node>>::_Vector_impl" }
%"struct.std::_Vector_base<node, std::allocator<node>>::_Vector_impl" = type { %"struct.std::_Vector_base<node, std::allocator<node>>::_Vector_impl_data" }
%"struct.std::_Vector_base<node, std::allocator<node>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%struct.node = type { i32, i32, i32, i32, i32 }

@_Z1sB5cxx11 = external dso_local global %"class.std::__cxx11::basic_string", align 8
@tree = external dso_local global %"class.std::vector", align 8

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z9find_edgeii(i32 noundef %0, i32 noundef %1) #1 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  %6 = load i32, ptr %4, align 4, !tbaa !5
  %7 = sext i32 %6 to i64
  %8 = call noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @tree, i64 noundef %7) #2
  %9 = getelementptr inbounds %struct.node, ptr %8, i32 0, i32 3
  %10 = load i32, ptr %9, align 4, !tbaa !9
  store i32 %10, ptr %4, align 4, !tbaa !5
  br label %11

11:                                               ; preds = %28, %2
  %12 = load i32, ptr %4, align 4, !tbaa !5
  %13 = icmp ne i32 %12, 0
  br i1 %13, label %14, label %34

14:                                               ; preds = %11
  %15 = load i32, ptr %4, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = call noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @tree, i64 noundef %16) #2
  %18 = getelementptr inbounds %struct.node, ptr %17, i32 0, i32 0
  %19 = load i32, ptr %18, align 4, !tbaa !11
  %20 = sext i32 %19 to i64
  %21 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z1sB5cxx11, i64 noundef %20)
  %22 = load i8, ptr %21, align 1, !tbaa !12
  %23 = sext i8 %22 to i32
  %24 = load i32, ptr %5, align 4, !tbaa !5
  %25 = icmp eq i32 %23, %24
  br i1 %25, label %26, label %28

26:                                               ; preds = %14
  %27 = load i32, ptr %4, align 4, !tbaa !5
  store i32 %27, ptr %3, align 4
  br label %35

28:                                               ; preds = %14
  %29 = load i32, ptr %4, align 4, !tbaa !5
  %30 = sext i32 %29 to i64
  %31 = call noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @tree, i64 noundef %30) #2
  %32 = getelementptr inbounds %struct.node, ptr %31, i32 0, i32 4
  %33 = load i32, ptr %32, align 4, !tbaa !13
  store i32 %33, ptr %4, align 4, !tbaa !5
  br label %11, !llvm.loop !14

34:                                               ; preds = %11
  store i32 0, ptr %3, align 4
  br label %35

35:                                               ; preds = %34, %26
  %36 = load i32, ptr %3, align 4
  ret i32 %36
}

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) #0 align 2

attributes #0 = { 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 #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 = { 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 12}
!10 = !{!"_ZTS4node", !6, i64 0, !6, i64 4, !6, i64 8, !6, i64 12, !6, i64 16}
!11 = !{!10, !6, i64 0}
!12 = !{!7, !7, i64 0}
!13 = !{!10, !6, i64 16}
!14 = distinct !{!14, !15}
!15 = !{!"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::__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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<node, std::allocator<node>>::_Vector_impl" }
%"struct.std::_Vector_base<node, std::allocator<node>>::_Vector_impl" = type { %"struct.std::_Vector_base<node, std::allocator<node>>::_Vector_impl_data" }
%"struct.std::_Vector_base<node, std::allocator<node>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@_Z1sB5cxx11 = external dso_local global %"class.std::__cxx11::basic_string", align 8
@tree = external dso_local global %"class.std::vector", align 8

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z9find_edgeii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = sext i32 %0 to i64
  %4 = tail call noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @tree, i64 noundef %3) #1
  %5 = getelementptr inbounds i8, ptr %4, i64 12
  %.078 = load i32, ptr %5, align 4, !tbaa !5
  %.not9 = icmp eq i32 %.078, 0
  br i1 %.not9, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2, %14
  %.0710 = phi i32 [ %.07, %14 ], [ %.078, %2 ]
  %6 = sext i32 %.0710 to i64
  %7 = tail call noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @tree, i64 noundef %6) #1
  %8 = load i32, ptr %7, align 4, !tbaa !9
  %9 = sext i32 %8 to i64
  %10 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z1sB5cxx11, i64 noundef %9)
  %11 = load i8, ptr %10, align 1, !tbaa !11
  %12 = sext i8 %11 to i32
  %13 = icmp eq i32 %12, %1
  br i1 %13, label %._crit_edge, label %14

14:                                               ; preds = %.lr.ph
  %15 = tail call noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @tree, i64 noundef %6) #1
  %16 = getelementptr inbounds i8, ptr %15, i64 16
  %.07 = load i32, ptr %16, align 4, !tbaa !5
  %.not = icmp eq i32 %.07, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !12

._crit_edge:                                      ; preds = %.lr.ph, %14, %2
  %.07.lcssa = phi i32 [ 0, %2 ], [ 0, %14 ], [ %.0710, %.lr.ph ]
  ret i32 %.07.lcssa
}

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) local_unnamed_addr #0 align 2

attributes #0 = { 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 #1 = { 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 0}
!10 = !{!"_ZTS4node", !6, i64 0, !6, i64 4, !6, i64 8, !6, i64 12, !6, i64 16}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,InstCombinePass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass