; 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 willreturn memory(read)
declare i64 @strlen(ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local zeroext i1 @trieSearchHelper(ptr noundef %0, ptr noundef %1, i1 noundef zeroext %2) #2 {
  %4 = alloca i1, align 1
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i8, align 1
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  %11 = zext i1 %2 to i8
  store i8 %11, ptr %7, align 1, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  store i32 0, ptr %8, align 4, !tbaa !11
  br label %12

12:                                               ; preds = %45, %3
  %13 = load i32, ptr %8, align 4, !tbaa !11
  %14 = sext i32 %13 to i64
  %15 = load ptr, ptr %6, align 8, !tbaa !5
  %16 = call i64 @strlen(ptr noundef %15) #4
  %17 = icmp ult i64 %14, %16
  br i1 %17, label %19, label %18

18:                                               ; preds = %12
  store i32 2, ptr %9, align 4
  br label %48

19:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  %20 = load ptr, ptr %6, align 8, !tbaa !5
  %21 = load i32, ptr %8, align 4, !tbaa !11
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds i8, ptr %20, i64 %22
  %24 = load i8, ptr %23, align 1, !tbaa !13
  %25 = sext i8 %24 to i32
  %26 = sub nsw i32 %25, 97
  store i32 %26, ptr %10, align 4, !tbaa !11
  %27 = load ptr, ptr %5, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.TrieNode, ptr %27, i32 0, i32 0
  %29 = load i32, ptr %10, align 4, !tbaa !11
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds [26 x ptr], ptr %28, i64 0, i64 %30
  %32 = load ptr, ptr %31, align 8, !tbaa !5
  %33 = icmp eq ptr %32, null
  br i1 %33, label %34, label %35

34:                                               ; preds = %19
  store i1 false, ptr %4, align 1
  store i32 1, ptr %9, align 4
  br label %42

35:                                               ; preds = %19
  %36 = load ptr, ptr %5, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.TrieNode, ptr %36, i32 0, i32 0
  %38 = load i32, ptr %10, align 4, !tbaa !11
  %39 = sext i32 %38 to i64
  %40 = getelementptr inbounds [26 x ptr], ptr %37, i64 0, i64 %39
  %41 = load ptr, ptr %40, align 8, !tbaa !5
  store ptr %41, ptr %5, align 8, !tbaa !5
  store i32 0, ptr %9, align 4
  br label %42

42:                                               ; preds = %35, %34
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  %43 = load i32, ptr %9, align 4
  switch i32 %43, label %48 [
    i32 0, label %44
  ]

44:                                               ; preds = %42
  br label %45

45:                                               ; preds = %44
  %46 = load i32, ptr %8, align 4, !tbaa !11
  %47 = add nsw i32 %46, 1
  store i32 %47, ptr %8, align 4, !tbaa !11
  br label %12, !llvm.loop !14

48:                                               ; preds = %42, %18
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  %49 = load i32, ptr %9, align 4
  switch i32 %49, label %62 [
    i32 2, label %50
    i32 1, label %60
  ]

50:                                               ; preds = %48
  %51 = load i8, ptr %7, align 1, !tbaa !9, !range !16, !noundef !17
  %52 = trunc i8 %51 to i1
  br i1 %52, label %58, label %53

53:                                               ; preds = %50
  %54 = load ptr, ptr %5, align 8, !tbaa !5
  %55 = getelementptr inbounds %struct.TrieNode, ptr %54, i32 0, i32 1
  %56 = load i8, ptr %55, align 8, !tbaa !18, !range !16, !noundef !17
  %57 = trunc i8 %56 to i1
  br label %58

58:                                               ; preds = %53, %50
  %59 = phi i1 [ true, %50 ], [ %57, %53 ]
  store i1 %59, ptr %4, align 1
  br label %60

60:                                               ; preds = %58, %48
  %61 = load i1, ptr %4, align 1
  ret i1 %61

62:                                               ; preds = %48
  unreachable
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nounwind willreturn memory(read) "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 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 }
attributes #4 = { nounwind willreturn memory(read) }

!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 = !{!"_Bool", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!7, !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}
!16 = !{i8 0, i8 2}
!17 = !{}
!18 = !{!19, !10, i64 208}
!19 = !{!"TrieNode", !7, i64 0, !10, i64 208}


; 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: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i64 @strlen(ptr nocapture noundef) local_unnamed_addr #0

; Function Attrs: nofree nounwind memory(read, inaccessiblemem: none) uwtable
define dso_local zeroext i1 @trieSearchHelper(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1, i1 noundef zeroext %2) local_unnamed_addr #1 {
  %4 = tail call i64 @strlen(ptr noundef nonnull dereferenceable(1) %1) #2
  %.not31 = icmp eq i64 %4, 0
  br i1 %.not31, label %._crit_edge, label %.lr.ph

5:                                                ; preds = %.lr.ph
  %indvars.iv.next = add nuw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %4
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !5

.lr.ph:                                           ; preds = %3, %5
  %indvars.iv = phi i64 [ %indvars.iv.next, %5 ], [ 0, %3 ]
  %.01629 = phi ptr [ %11, %5 ], [ %0, %3 ]
  %6 = getelementptr inbounds i8, ptr %1, i64 %indvars.iv
  %7 = load i8, ptr %6, align 1, !tbaa !7
  %8 = sext i8 %7 to i64
  %9 = add nsw i64 %8, -97
  %10 = getelementptr inbounds [26 x ptr], ptr %.01629, i64 0, i64 %9
  %11 = load ptr, ptr %10, align 8, !tbaa !10
  %.not = icmp eq ptr %11, null
  br i1 %.not, label %.thread, label %5

._crit_edge:                                      ; preds = %5, %3
  %.016.lcssa = phi ptr [ %0, %3 ], [ %11, %5 ]
  br i1 %2, label %.thread, label %12

12:                                               ; preds = %._crit_edge
  %13 = getelementptr inbounds i8, ptr %.016.lcssa, i64 208
  %14 = load i8, ptr %13, align 8, !tbaa !12, !range !15, !noundef !16
  %15 = trunc nuw i8 %14 to i1
  br label %.thread

.thread:                                          ; preds = %.lr.ph, %._crit_edge, %12
  %.3 = phi i1 [ true, %._crit_edge ], [ %15, %12 ], [ false, %.lr.ph ]
  ret i1 %.3
}

attributes #0 = { mustprogress nofree nounwind willreturn memory(argmem: read) "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 memory(read, inaccessiblemem: none) 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 willreturn memory(read) }

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


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