; LLVM IR from ADJA/algos :: Strings/UkkonenSuffixTree.ll (Z11change_edgeiii)

; 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: 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 nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

; 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) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_Z11change_edgeiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) #2 {
  %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 %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  %9 = load i32, ptr %4, align 4, !tbaa !5
  %10 = sext i32 %9 to i64
  %11 = call noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @tree, i64 noundef %10) #3
  %12 = getelementptr inbounds %struct.node, ptr %11, i32 0, i32 3
  %13 = load i32, ptr %12, align 4, !tbaa !9
  store i32 %13, ptr %7, align 4, !tbaa !5
  %14 = load i32, ptr %7, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = call noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @tree, i64 noundef %15) #3
  %17 = getelementptr inbounds %struct.node, ptr %16, i32 0, i32 0
  %18 = load i32, ptr %17, align 4, !tbaa !11
  %19 = sext i32 %18 to i64
  %20 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z1sB5cxx11, i64 noundef %19)
  %21 = load i8, ptr %20, align 1, !tbaa !12
  %22 = sext i8 %21 to i32
  %23 = load i32, ptr %5, align 4, !tbaa !5
  %24 = icmp eq i32 %22, %23
  br i1 %24, label %25, label %40

25:                                               ; preds = %3
  %26 = load i32, ptr %6, align 4, !tbaa !5
  %27 = load i32, ptr %4, align 4, !tbaa !5
  %28 = sext i32 %27 to i64
  %29 = call noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @tree, i64 noundef %28) #3
  %30 = getelementptr inbounds %struct.node, ptr %29, i32 0, i32 3
  store i32 %26, ptr %30, align 4, !tbaa !9
  %31 = load i32, ptr %7, align 4, !tbaa !5
  %32 = sext i32 %31 to i64
  %33 = call noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @tree, i64 noundef %32) #3
  %34 = getelementptr inbounds %struct.node, ptr %33, i32 0, i32 4
  %35 = load i32, ptr %34, align 4, !tbaa !13
  %36 = load i32, ptr %6, align 4, !tbaa !5
  %37 = sext i32 %36 to i64
  %38 = call noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @tree, i64 noundef %37) #3
  %39 = getelementptr inbounds %struct.node, ptr %38, i32 0, i32 4
  store i32 %35, ptr %39, align 4, !tbaa !13
  store i32 1, ptr %8, align 4
  br label %80

40:                                               ; preds = %3
  %41 = load i32, ptr %7, align 4, !tbaa !5
  store i32 %41, ptr %4, align 4, !tbaa !5
  br label %42

42:                                               ; preds = %77, %40
  %43 = load i32, ptr %4, align 4, !tbaa !5
  %44 = icmp ne i32 %43, 0
  br i1 %44, label %45, label %79

45:                                               ; preds = %42
  %46 = load i32, ptr %4, align 4, !tbaa !5
  %47 = sext i32 %46 to i64
  %48 = call noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @tree, i64 noundef %47) #3
  %49 = getelementptr inbounds %struct.node, ptr %48, i32 0, i32 4
  %50 = load i32, ptr %49, align 4, !tbaa !13
  store i32 %50, ptr %7, align 4, !tbaa !5
  %51 = load i32, ptr %7, align 4, !tbaa !5
  %52 = sext i32 %51 to i64
  %53 = call noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @tree, i64 noundef %52) #3
  %54 = getelementptr inbounds %struct.node, ptr %53, i32 0, i32 0
  %55 = load i32, ptr %54, align 4, !tbaa !11
  %56 = sext i32 %55 to i64
  %57 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z1sB5cxx11, i64 noundef %56)
  %58 = load i8, ptr %57, align 1, !tbaa !12
  %59 = sext i8 %58 to i32
  %60 = load i32, ptr %5, align 4, !tbaa !5
  %61 = icmp eq i32 %59, %60
  br i1 %61, label %62, label %77

62:                                               ; preds = %45
  %63 = load i32, ptr %6, align 4, !tbaa !5
  %64 = load i32, ptr %4, align 4, !tbaa !5
  %65 = sext i32 %64 to i64
  %66 = call noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @tree, i64 noundef %65) #3
  %67 = getelementptr inbounds %struct.node, ptr %66, i32 0, i32 4
  store i32 %63, ptr %67, align 4, !tbaa !13
  %68 = load i32, ptr %7, align 4, !tbaa !5
  %69 = sext i32 %68 to i64
  %70 = call noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @tree, i64 noundef %69) #3
  %71 = getelementptr inbounds %struct.node, ptr %70, i32 0, i32 4
  %72 = load i32, ptr %71, align 4, !tbaa !13
  %73 = load i32, ptr %6, align 4, !tbaa !5
  %74 = sext i32 %73 to i64
  %75 = call noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @tree, i64 noundef %74) #3
  %76 = getelementptr inbounds %struct.node, ptr %75, i32 0, i32 4
  store i32 %72, ptr %76, align 4, !tbaa !13
  store i32 1, ptr %8, align 4
  br label %80

77:                                               ; preds = %45
  %78 = load i32, ptr %7, align 4, !tbaa !5
  store i32 %78, ptr %4, align 4, !tbaa !5
  br label %42, !llvm.loop !14

79:                                               ; preds = %42
  store i32 0, ptr %8, align 4
  br label %80

80:                                               ; preds = %79, %62, %25
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  %81 = load i32, ptr %8, align 4
  switch i32 %81, label %83 [
    i32 0, label %82
    i32 1, label %82
  ]

82:                                               ; preds = %80, %80
  ret void

83:                                               ; preds = %80
  unreachable
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 = { 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
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

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z11change_edgeiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = sext i32 %0 to i64
  %5 = tail call noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @tree, i64 noundef %4) #1
  %6 = getelementptr inbounds i8, ptr %5, i64 12
  %7 = load i32, ptr %6, align 4, !tbaa !5
  %8 = sext i32 %7 to i64
  %9 = tail call noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @tree, i64 noundef %8) #1
  %10 = load i32, ptr %9, align 4, !tbaa !10
  %11 = sext i32 %10 to i64
  %12 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z1sB5cxx11, i64 noundef %11)
  %13 = load i8, ptr %12, align 1, !tbaa !11
  %14 = sext i8 %13 to i32
  %15 = icmp eq i32 %14, %1
  br i1 %15, label %.loopexit.sink.split, label %.preheader

.preheader:                                       ; preds = %3, %16
  %.0 = phi i32 [ %20, %16 ], [ %7, %3 ]
  %.not = icmp eq i32 %.0, 0
  br i1 %.not, label %.loopexit, label %16

16:                                               ; preds = %.preheader
  %17 = sext i32 %.0 to i64
  %18 = tail call noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @tree, i64 noundef %17) #1
  %19 = getelementptr inbounds i8, ptr %18, i64 16
  %20 = load i32, ptr %19, align 4, !tbaa !12
  %21 = sext i32 %20 to i64
  %22 = tail call noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @tree, i64 noundef %21) #1
  %23 = load i32, ptr %22, align 4, !tbaa !10
  %24 = sext i32 %23 to i64
  %25 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z1sB5cxx11, i64 noundef %24)
  %26 = load i8, ptr %25, align 1, !tbaa !11
  %27 = sext i8 %26 to i32
  %28 = icmp eq i32 %27, %1
  br i1 %28, label %.loopexit.sink.split, label %.preheader, !llvm.loop !13

.loopexit.sink.split:                             ; preds = %16, %3
  %.lcssa20.sink = phi i64 [ %4, %3 ], [ %17, %16 ]
  %.sink26 = phi i64 [ 12, %3 ], [ 16, %16 ]
  %.lcssa.sink = phi i64 [ %8, %3 ], [ %21, %16 ]
  %29 = tail call noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @tree, i64 noundef %.lcssa20.sink) #1
  %30 = getelementptr inbounds i8, ptr %29, i64 %.sink26
  store i32 %2, ptr %30, align 4, !tbaa !15
  %31 = tail call noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @tree, i64 noundef %.lcssa.sink) #1
  %32 = getelementptr inbounds i8, ptr %31, i64 16
  %33 = load i32, ptr %32, align 4, !tbaa !12
  %34 = sext i32 %2 to i64
  %35 = tail call noundef nonnull align 4 dereferenceable(20) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @tree, i64 noundef %34) #1
  %36 = getelementptr inbounds i8, ptr %35, i64 16
  store i32 %33, ptr %36, align 4, !tbaa !12
  br label %.loopexit

.loopexit:                                        ; preds = %.preheader, %.loopexit.sink.split
  ret void
}

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, !7, i64 12}
!6 = !{!"_ZTS4node", !7, i64 0, !7, i64 4, !7, i64 8, !7, i64 12, !7, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!6, !7, i64 0}
!11 = !{!8, !8, i64 0}
!12 = !{!6, !7, i64 16}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = !{!7, !7, i64 0}


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