; LLVM IR from LeetCode-in-C/LeetCode-in-C :: src/main/c/g0201_0300/s0208_implement_trie_prefix_tree (Trie)

; 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 }

; 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 @trieFreeNode(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  %5 = icmp eq ptr %4, null
  br i1 %5, label %6, label %7

6:                                                ; preds = %1
  br label %24

7:                                                ; preds = %1
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  store i32 0, ptr %3, align 4, !tbaa !9
  br label %8

8:                                                ; preds = %19, %7
  %9 = load i32, ptr %3, align 4, !tbaa !9
  %10 = icmp slt i32 %9, 26
  br i1 %10, label %12, label %11

11:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  br label %22

12:                                               ; preds = %8
  %13 = load ptr, ptr %2, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.TrieNode, ptr %13, i32 0, i32 0
  %15 = load i32, ptr %3, align 4, !tbaa !9
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds [26 x ptr], ptr %14, i64 0, i64 %16
  %18 = load ptr, ptr %17, align 8, !tbaa !5
  call void @trieFreeNode(ptr noundef %18)
  br label %19

19:                                               ; preds = %12
  %20 = load i32, ptr %3, align 4, !tbaa !9
  %21 = add nsw i32 %20, 1
  store i32 %21, ptr %3, align 4, !tbaa !9
  br label %8, !llvm.loop !11

22:                                               ; preds = %11
  %23 = load ptr, ptr %2, align 8, !tbaa !5
  call void @free(ptr noundef %23) #3
  br label %24

24:                                               ; preds = %22, %6
  ret void
}

; Function Attrs: nounwind
declare void @free(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 = { 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 #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 = 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"

; Function Attrs: nounwind uwtable
define dso_local void @trieFreeNode(ptr noundef %0) local_unnamed_addr #0 {
  %2 = icmp eq ptr %0, null
  br i1 %2, label %common.ret, label %.preheader.preheader

common.ret:                                       ; preds = %1, %.preheader.preheader
  ret void

.preheader.preheader:                             ; preds = %1
  %3 = load ptr, ptr %0, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %3)
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = load ptr, ptr %4, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %5)
  %6 = getelementptr inbounds i8, ptr %0, i64 16
  %7 = load ptr, ptr %6, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %7)
  %8 = getelementptr inbounds i8, ptr %0, i64 24
  %9 = load ptr, ptr %8, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %9)
  %10 = getelementptr inbounds i8, ptr %0, i64 32
  %11 = load ptr, ptr %10, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %11)
  %12 = getelementptr inbounds i8, ptr %0, i64 40
  %13 = load ptr, ptr %12, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %13)
  %14 = getelementptr inbounds i8, ptr %0, i64 48
  %15 = load ptr, ptr %14, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %15)
  %16 = getelementptr inbounds i8, ptr %0, i64 56
  %17 = load ptr, ptr %16, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %17)
  %18 = getelementptr inbounds i8, ptr %0, i64 64
  %19 = load ptr, ptr %18, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %19)
  %20 = getelementptr inbounds i8, ptr %0, i64 72
  %21 = load ptr, ptr %20, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %21)
  %22 = getelementptr inbounds i8, ptr %0, i64 80
  %23 = load ptr, ptr %22, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %23)
  %24 = getelementptr inbounds i8, ptr %0, i64 88
  %25 = load ptr, ptr %24, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %25)
  %26 = getelementptr inbounds i8, ptr %0, i64 96
  %27 = load ptr, ptr %26, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %27)
  %28 = getelementptr inbounds i8, ptr %0, i64 104
  %29 = load ptr, ptr %28, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %29)
  %30 = getelementptr inbounds i8, ptr %0, i64 112
  %31 = load ptr, ptr %30, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %31)
  %32 = getelementptr inbounds i8, ptr %0, i64 120
  %33 = load ptr, ptr %32, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %33)
  %34 = getelementptr inbounds i8, ptr %0, i64 128
  %35 = load ptr, ptr %34, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %35)
  %36 = getelementptr inbounds i8, ptr %0, i64 136
  %37 = load ptr, ptr %36, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %37)
  %38 = getelementptr inbounds i8, ptr %0, i64 144
  %39 = load ptr, ptr %38, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %39)
  %40 = getelementptr inbounds i8, ptr %0, i64 152
  %41 = load ptr, ptr %40, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %41)
  %42 = getelementptr inbounds i8, ptr %0, i64 160
  %43 = load ptr, ptr %42, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %43)
  %44 = getelementptr inbounds i8, ptr %0, i64 168
  %45 = load ptr, ptr %44, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %45)
  %46 = getelementptr inbounds i8, ptr %0, i64 176
  %47 = load ptr, ptr %46, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %47)
  %48 = getelementptr inbounds i8, ptr %0, i64 184
  %49 = load ptr, ptr %48, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %49)
  %50 = getelementptr inbounds i8, ptr %0, i64 192
  %51 = load ptr, ptr %50, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %51)
  %52 = getelementptr inbounds i8, ptr %0, i64 200
  %53 = load ptr, ptr %52, align 8, !tbaa !5
  tail call void @trieFreeNode(ptr noundef %53)
  tail call void @free(ptr noundef nonnull %0) #2
  br label %common.ret
}

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #1

attributes #0 = { 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 nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


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