; LLVM IR from AlgoGenesis/C :: Trie/AutocompletePrefix (autocompletePrefix)

; 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.TrieNode = type { [26 x ptr], i8 }

@.str = external hidden unnamed_addr constant [4 x i8], align 1

; 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: nounwind uwtable
define dso_local void @collectWords(ptr noundef %0, ptr noundef %1, i32 noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !9
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.TrieNode, ptr %8, i32 0, i32 1
  %10 = load i8, ptr %9, align 8, !tbaa !11, !range !14, !noundef !15
  %11 = trunc i8 %10 to i1
  br i1 %11, label %12, label %19

12:                                               ; preds = %3
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  %14 = load i32, ptr %6, align 4, !tbaa !9
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds i8, ptr %13, i64 %15
  store i8 0, ptr %16, align 1, !tbaa !16
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  %18 = call i32 (ptr, ...) @printf(ptr noundef @.str, ptr noundef %17)
  br label %19

19:                                               ; preds = %12, %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %20

20:                                               ; preds = %50, %19
  %21 = load i32, ptr %7, align 4, !tbaa !9
  %22 = icmp slt i32 %21, 26
  br i1 %22, label %24, label %23

23:                                               ; preds = %20
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %53

24:                                               ; preds = %20
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.TrieNode, ptr %25, i32 0, i32 0
  %27 = load i32, ptr %7, align 4, !tbaa !9
  %28 = sext i32 %27 to i64
  %29 = getelementptr inbounds [26 x ptr], ptr %26, i64 0, i64 %28
  %30 = load ptr, ptr %29, align 8, !tbaa !5
  %31 = icmp ne ptr %30, null
  br i1 %31, label %32, label %49

32:                                               ; preds = %24
  %33 = load i32, ptr %7, align 4, !tbaa !9
  %34 = add nsw i32 97, %33
  %35 = trunc i32 %34 to i8
  %36 = load ptr, ptr %5, align 8, !tbaa !5
  %37 = load i32, ptr %6, align 4, !tbaa !9
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds i8, ptr %36, i64 %38
  store i8 %35, ptr %39, align 1, !tbaa !16
  %40 = load ptr, ptr %4, align 8, !tbaa !5
  %41 = getelementptr inbounds %struct.TrieNode, ptr %40, i32 0, i32 0
  %42 = load i32, ptr %7, align 4, !tbaa !9
  %43 = sext i32 %42 to i64
  %44 = getelementptr inbounds [26 x ptr], ptr %41, i64 0, i64 %43
  %45 = load ptr, ptr %44, align 8, !tbaa !5
  %46 = load ptr, ptr %5, align 8, !tbaa !5
  %47 = load i32, ptr %6, align 4, !tbaa !9
  %48 = add nsw i32 %47, 1
  call void @collectWords(ptr noundef %45, ptr noundef %46, i32 noundef %48)
  br label %49

49:                                               ; preds = %32, %24
  br label %50

50:                                               ; preds = %49
  %51 = load i32, ptr %7, align 4, !tbaa !9
  %52 = add nsw i32 %51, 1
  store i32 %52, ptr %7, align 4, !tbaa !9
  br label %20, !llvm.loop !17

53:                                               ; preds = %23
  ret void
}

declare i32 @printf(ptr noundef, ...) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { "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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !13, i64 208}
!12 = !{!"TrieNode", !7, i64 0, !13, i64 208}
!13 = !{!"_Bool", !7, i64 0}
!14 = !{i8 0, i8 2}
!15 = !{}
!16 = !{!7, !7, i64 0}
!17 = distinct !{!17, !18}
!18 = !{!"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"

@.str = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: nofree nounwind uwtable
define dso_local void @collectWords(ptr nocapture noundef readonly %0, ptr noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = getelementptr inbounds i8, ptr %0, i64 208
  %5 = load i8, ptr %4, align 8, !tbaa !5, !range !10, !noundef !11
  %6 = trunc nuw i8 %5 to i1
  %7 = sext i32 %2 to i64
  br i1 %6, label %8, label %._crit_edge

8:                                                ; preds = %3
  %9 = getelementptr inbounds i8, ptr %1, i64 %7
  store i8 0, ptr %9, align 1, !tbaa !12
  %10 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, ptr noundef %1)
  br label %._crit_edge

._crit_edge:                                      ; preds = %3, %8
  %11 = getelementptr inbounds i8, ptr %1, i64 %7
  %12 = add nsw i32 %2, 1
  br label %14

13:                                               ; preds = %21
  ret void

14:                                               ; preds = %._crit_edge, %21
  %indvars.iv = phi i64 [ 0, %._crit_edge ], [ %indvars.iv.next, %21 ]
  %15 = getelementptr inbounds [26 x ptr], ptr %0, i64 0, i64 %indvars.iv
  %16 = load ptr, ptr %15, align 8, !tbaa !13
  %.not = icmp eq ptr %16, null
  br i1 %.not, label %21, label %17

17:                                               ; preds = %14
  %18 = trunc i64 %indvars.iv to i8
  %19 = add nuw nsw i8 %18, 97
  store i8 %19, ptr %11, align 1, !tbaa !12
  %20 = load ptr, ptr %15, align 8, !tbaa !13
  tail call void @collectWords(ptr noundef %20, ptr noundef %1, i32 noundef %12)
  br label %21

21:                                               ; preds = %14, %17
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, 26
  br i1 %exitcond.not, label %13, label %14, !llvm.loop !15
}

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

attributes #0 = { nofree 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 = { nofree 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" }

!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, !9, i64 208}
!6 = !{!"TrieNode", !7, i64 0, !9, i64 208}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!"_Bool", !7, i64 0}
!10 = !{i8 0, i8 2}
!11 = !{}
!12 = !{!7, !7, i64 0}
!13 = !{!14, !14, i64 0}
!14 = !{!"any pointer", !7, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LICMPass,LoopRotatePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass