; LLVM IR from MostafaTwfiq/C-DataStructures-And-Algorithms :: DataStructure/Trees/Sources (AVLTree)

; 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.AVLTree = type { ptr, i32, ptr, ptr }
%struct.AVLTreeNode = type { ptr, i32, ptr, ptr }

@stderr = external global ptr, align 8
@.str.2 = external hidden unnamed_addr constant [24 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [42 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [31 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [13 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
define dso_local ptr @avlTreeGet(ptr noundef %0, ptr noundef %1) #3 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = icmp eq ptr %6, null
  br i1 %7, label %8, label %11

8:                                                ; preds = %2
  %9 = load ptr, ptr @stderr, align 8, !tbaa !5
  %10 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %9, ptr noundef @.str.8, ptr noundef @.str.6, ptr noundef @.str.2) #4
  call void @exit(i32 noundef -83386157) #5
  unreachable

11:                                               ; preds = %2
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = icmp eq ptr %12, null
  br i1 %13, label %14, label %17

14:                                               ; preds = %11
  %15 = load ptr, ptr @stderr, align 8, !tbaa !5
  %16 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %15, ptr noundef @.str.3, ptr noundef @.str.9, ptr noundef @.str.2) #4
  call void @exit(i32 noundef -83384987) #5
  unreachable

17:                                               ; preds = %11
  br label %18

18:                                               ; preds = %17
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  %19 = load ptr, ptr %3, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.AVLTree, ptr %19, i32 0, i32 0
  %21 = load ptr, ptr %20, align 8, !tbaa !9
  store ptr %21, ptr %5, align 8, !tbaa !5
  br label %22

22:                                               ; preds = %55, %18
  %23 = load ptr, ptr %5, align 8, !tbaa !5
  %24 = icmp ne ptr %23, null
  br i1 %24, label %25, label %56

25:                                               ; preds = %22
  %26 = load ptr, ptr %3, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.AVLTree, ptr %26, i32 0, i32 3
  %28 = load ptr, ptr %27, align 8, !tbaa !12
  %29 = load ptr, ptr %4, align 8, !tbaa !5
  %30 = load ptr, ptr %5, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct.AVLTreeNode, ptr %30, i32 0, i32 0
  %32 = load ptr, ptr %31, align 8, !tbaa !13
  %33 = call i32 %28(ptr noundef %29, ptr noundef %32)
  %34 = icmp eq i32 %33, 0
  br i1 %34, label %35, label %36

35:                                               ; preds = %25
  br label %56

36:                                               ; preds = %25
  %37 = load ptr, ptr %3, align 8, !tbaa !5
  %38 = getelementptr inbounds %struct.AVLTree, ptr %37, i32 0, i32 3
  %39 = load ptr, ptr %38, align 8, !tbaa !12
  %40 = load ptr, ptr %4, align 8, !tbaa !5
  %41 = load ptr, ptr %5, align 8, !tbaa !5
  %42 = getelementptr inbounds %struct.AVLTreeNode, ptr %41, i32 0, i32 0
  %43 = load ptr, ptr %42, align 8, !tbaa !13
  %44 = call i32 %39(ptr noundef %40, ptr noundef %43)
  %45 = icmp slt i32 %44, 0
  br i1 %45, label %46, label %50

46:                                               ; preds = %36
  %47 = load ptr, ptr %5, align 8, !tbaa !5
  %48 = getelementptr inbounds %struct.AVLTreeNode, ptr %47, i32 0, i32 2
  %49 = load ptr, ptr %48, align 8, !tbaa !15
  store ptr %49, ptr %5, align 8, !tbaa !5
  br label %54

50:                                               ; preds = %36
  %51 = load ptr, ptr %5, align 8, !tbaa !5
  %52 = getelementptr inbounds %struct.AVLTreeNode, ptr %51, i32 0, i32 3
  %53 = load ptr, ptr %52, align 8, !tbaa !16
  store ptr %53, ptr %5, align 8, !tbaa !5
  br label %54

54:                                               ; preds = %50, %46
  br label %55

55:                                               ; preds = %54
  br label %22, !llvm.loop !17

56:                                               ; preds = %35, %22
  %57 = load ptr, ptr %5, align 8, !tbaa !5
  %58 = icmp ne ptr %57, null
  br i1 %58, label %59, label %63

59:                                               ; preds = %56
  %60 = load ptr, ptr %5, align 8, !tbaa !5
  %61 = getelementptr inbounds %struct.AVLTreeNode, ptr %60, i32 0, i32 0
  %62 = load ptr, ptr %61, align 8, !tbaa !13
  br label %64

63:                                               ; preds = %56
  br label %64

64:                                               ; preds = %63, %59
  %65 = phi ptr [ %62, %59 ], [ null, %63 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  ret ptr %65
}

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 = !{!"AVLTree", !6, i64 0, !11, i64 8, !6, i64 16, !6, i64 24}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !6, i64 24}
!13 = !{!14, !6, i64 0}
!14 = !{!"AVLTreeNode", !6, i64 0, !11, i64 8, !6, i64 16, !6, i64 24}
!15 = !{!14, !6, i64 16}
!16 = !{!14, !6, i64 24}
!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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str.2 = external hidden unnamed_addr constant [24 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [42 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [31 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [13 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
define dso_local ptr @avlTreeGet(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.8, ptr noundef nonnull @.str.6, 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 %10, label %.preheader

.preheader:                                       ; preds = %7
  %.017 = load ptr, ptr %0, align 8, !tbaa !5
  %.not18 = icmp eq ptr %.017, null
  br i1 %.not18, label %.critedge, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader
  %9 = getelementptr inbounds i8, ptr %0, i64 24
  br label %13

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

13:                                               ; preds = %.lr.ph, %18
  %.019 = phi ptr [ %.017, %.lr.ph ], [ %.0, %18 ]
  %14 = load ptr, ptr %9, align 8, !tbaa !9
  %15 = load ptr, ptr %.019, align 8, !tbaa !12
  %16 = tail call i32 %14(ptr noundef nonnull %1, ptr noundef %15) #5
  %17 = icmp eq i32 %16, 0
  br i1 %17, label %23, label %18

18:                                               ; preds = %13
  %19 = load ptr, ptr %9, align 8, !tbaa !9
  %20 = load ptr, ptr %.019, align 8, !tbaa !12
  %21 = tail call i32 %19(ptr noundef nonnull %1, ptr noundef %20) #5
  %22 = icmp slt i32 %21, 0
  %.1.in.v = select i1 %22, i64 16, i64 24
  %.1.in = getelementptr inbounds i8, ptr %.019, i64 %.1.in.v
  %.0 = load ptr, ptr %.1.in, align 8, !tbaa !5
  %.not = icmp eq ptr %.0, null
  br i1 %.not, label %.critedge, label %13, !llvm.loop !14

23:                                               ; preds = %13
  %24 = load ptr, ptr %.019, align 8, !tbaa !12
  br label %.critedge

.critedge:                                        ; preds = %18, %.preheader, %23
  %25 = phi ptr [ %24, %23 ], [ null, %.preheader ], [ null, %18 ]
  ret ptr %25
}

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 }
attributes #5 = { 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 24}
!10 = !{!"AVLTree", !6, i64 0, !11, i64 8, !6, i64 16, !6, i64 24}
!11 = !{!"int", !7, i64 0}
!12 = !{!13, !6, i64 0}
!13 = !{!"AVLTreeNode", !6, i64 0, !11, i64 8, !6, i64 16, !6, i64 24}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


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