; LLVM IR from MostafaTwfiq/C-DataStructures-And-Algorithms :: DataStructure/Trees/Sources (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.Trie = type { ptr }
%struct.TrieNode = type { ptr, i8, i32 }

@stderr = external global ptr, align 8
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [20 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [31 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [42 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [5 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: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #1

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) #2

; 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
declare dso_local signext i8 @toLowerCase(i8 noundef signext) #3

; Function Attrs: nounwind uwtable
define dso_local void @trieRemoveWord(ptr noundef %0, ptr noundef %1) #3 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  %8 = icmp eq ptr %7, null
  br i1 %8, label %9, label %12

9:                                                ; preds = %2
  %10 = load ptr, ptr @stderr, align 8, !tbaa !5
  %11 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %10, ptr noundef @.str.3, ptr noundef @.str.1, ptr noundef @.str.2) #4
  call void @exit(i32 noundef -83386157) #5
  unreachable

12:                                               ; preds = %2
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = icmp eq ptr %13, null
  br i1 %14, label %15, label %18

15:                                               ; preds = %12
  %16 = load ptr, ptr @stderr, align 8, !tbaa !5
  %17 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %16, ptr noundef @.str.4, ptr noundef @.str.5, ptr noundef @.str.2) #4
  call void @exit(i32 noundef -83384987) #5
  unreachable

18:                                               ; preds = %12
  br label %19

19:                                               ; preds = %18
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.Trie, ptr %20, i32 0, i32 0
  %22 = load ptr, ptr %21, align 8, !tbaa !9
  store ptr %22, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = load i8, ptr %23, align 1, !tbaa !11
  %25 = call signext i8 @toLowerCase(i8 noundef signext %24)
  %26 = sext i8 %25 to i32
  %27 = sub nsw i32 %26, 97
  store i32 %27, ptr %6, align 4, !tbaa !12
  %28 = load i32, ptr %6, align 4, !tbaa !12
  %29 = icmp sge i32 %28, 0
  br i1 %29, label %30, label %62

30:                                               ; preds = %19
  %31 = load i32, ptr %6, align 4, !tbaa !12
  %32 = icmp slt i32 %31, 26
  br i1 %32, label %33, label %62

33:                                               ; preds = %30
  %34 = load ptr, ptr %5, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.TrieNode, ptr %34, i32 0, i32 0
  %36 = load ptr, ptr %35, align 8, !tbaa !14
  %37 = load i32, ptr %6, align 4, !tbaa !12
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds ptr, ptr %36, i64 %38
  %40 = load ptr, ptr %39, align 8, !tbaa !5
  %41 = icmp ne ptr %40, null
  br i1 %41, label %42, label %61

42:                                               ; preds = %33
  %43 = load ptr, ptr %5, align 8, !tbaa !5
  %44 = getelementptr inbounds %struct.TrieNode, ptr %43, i32 0, i32 0
  %45 = load ptr, ptr %44, align 8, !tbaa !14
  %46 = load i32, ptr %6, align 4, !tbaa !12
  %47 = sext i32 %46 to i64
  %48 = getelementptr inbounds ptr, ptr %45, i64 %47
  %49 = load ptr, ptr %48, align 8, !tbaa !5
  %50 = load ptr, ptr %4, align 8, !tbaa !5
  %51 = getelementptr inbounds i8, ptr %50, i64 1
  %52 = call ptr @trieRemoveWordR(ptr noundef %49, ptr noundef %51)
  %53 = load ptr, ptr %3, align 8, !tbaa !5
  %54 = getelementptr inbounds %struct.Trie, ptr %53, i32 0, i32 0
  %55 = load ptr, ptr %54, align 8, !tbaa !9
  %56 = getelementptr inbounds %struct.TrieNode, ptr %55, i32 0, i32 0
  %57 = load ptr, ptr %56, align 8, !tbaa !14
  %58 = load i32, ptr %6, align 4, !tbaa !12
  %59 = sext i32 %58 to i64
  %60 = getelementptr inbounds ptr, ptr %57, i64 %59
  store ptr %52, ptr %60, align 8, !tbaa !5
  br label %61

61:                                               ; preds = %42, %33
  br label %62

62:                                               ; preds = %61, %30, %19
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  ret void
}

; Function Attrs: nounwind uwtable
declare dso_local ptr @trieRemoveWordR(ptr noundef, ptr noundef) #3

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { noreturn 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 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 #4 = { nounwind }
attributes #5 = { noreturn 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, !6, i64 0}
!10 = !{!"Trie", !6, i64 0}
!11 = !{!7, !7, i64 0}
!12 = !{!13, !13, i64 0}
!13 = !{!"int", !7, i64 0}
!14 = !{!15, !6, i64 0}
!15 = !{!"TrieNode", !6, i64 0, !7, i64 8, !13, i64 12}


; 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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [20 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [31 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [42 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [5 x i8], align 1

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #0

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local signext i8 @toLowerCase(i8 noundef signext) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local void @trieRemoveWord(ptr noundef readonly %0, ptr noundef %1) local_unnamed_addr #2 {
  %3 = icmp eq ptr %0, null
  br i1 %3, label %4, label %7

4:                                                ; preds = %2
  %5 = load ptr, ptr @stderr, align 8, !tbaa !5
  %6 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %5, ptr noundef nonnull @.str.3, ptr noundef nonnull @.str.1, ptr noundef nonnull @.str.2) #3
  tail call void @exit(i32 noundef -83386157) #4
  unreachable

7:                                                ; preds = %2
  %8 = icmp eq ptr %1, null
  br i1 %8, label %9, label %12

9:                                                ; preds = %7
  %10 = load ptr, ptr @stderr, align 8, !tbaa !5
  %11 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %10, ptr noundef nonnull @.str.4, ptr noundef nonnull @.str.5, ptr noundef nonnull @.str.2) #3
  tail call void @exit(i32 noundef -83384987) #4
  unreachable

12:                                               ; preds = %7
  %13 = load ptr, ptr %0, align 8, !tbaa !9
  %14 = load i8, ptr %1, align 1, !tbaa !11
  %15 = tail call signext i8 @toLowerCase(i8 noundef signext %14)
  %16 = add i8 %15, -97
  %or.cond = icmp ult i8 %16, 26
  br i1 %or.cond, label %17, label %30

17:                                               ; preds = %12
  %18 = zext nneg i8 %15 to i64
  %19 = add nuw nsw i64 %18, 4294967199
  %20 = load ptr, ptr %13, align 8, !tbaa !12
  %21 = and i64 %19, 4294967295
  %22 = getelementptr inbounds ptr, ptr %20, i64 %21
  %23 = load ptr, ptr %22, align 8, !tbaa !5
  %.not = icmp eq ptr %23, null
  br i1 %.not, label %30, label %24

24:                                               ; preds = %17
  %25 = getelementptr inbounds i8, ptr %1, i64 1
  %26 = tail call ptr @trieRemoveWordR(ptr noundef nonnull %23, ptr noundef nonnull %25)
  %27 = load ptr, ptr %0, align 8, !tbaa !9
  %28 = load ptr, ptr %27, align 8, !tbaa !12
  %29 = getelementptr inbounds ptr, ptr %28, i64 %21
  store ptr %26, ptr %29, align 8, !tbaa !5
  br label %30

30:                                               ; preds = %17, %24, %12
  ret void
}

; Function Attrs: nounwind uwtable
declare dso_local ptr @trieRemoveWordR(ptr noundef, ptr noundef) local_unnamed_addr #2

attributes #0 = { 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" }
attributes #1 = { noreturn 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 #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 = { cold nounwind }
attributes #4 = { noreturn 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, !6, i64 0}
!10 = !{!"Trie", !6, i64 0}
!11 = !{!7, !7, i64 0}
!12 = !{!13, !6, i64 0}
!13 = !{!"TrieNode", !6, i64 0, !7, i64 8, !14, i64 12}
!14 = !{!"int", !7, i64 0}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass