; LLVM IR from KishanBGajera/2024-366-Days-Of-DSA :: Data Structures/Non-Linear/Tree/Binary Tree/C (main)

; 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.TreeNode = type { i32, ptr, ptr }

@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.3 = 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

declare i32 @printf(ptr noundef, ...) #1

; Function Attrs: nounwind uwtable
define dso_local void @printTree(ptr noundef %0, i32 noundef %1, i32 noundef %2) #2 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store i32 %2, ptr %6, align 4, !tbaa !9
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = icmp ne ptr %8, null
  br i1 %9, label %10, label %46

10:                                               ; preds = %3
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.TreeNode, ptr %11, i32 0, i32 2
  %13 = load ptr, ptr %12, align 8, !tbaa !11
  %14 = load i32, ptr %5, align 4, !tbaa !9
  %15 = add nsw i32 %14, 1
  %16 = load i32, ptr %6, align 4, !tbaa !9
  call void @printTree(ptr noundef %13, i32 noundef %15, i32 noundef %16)
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %17

17:                                               ; preds = %24, %10
  %18 = load i32, ptr %7, align 4, !tbaa !9
  %19 = load i32, ptr %5, align 4, !tbaa !9
  %20 = icmp slt i32 %18, %19
  br i1 %20, label %22, label %21

21:                                               ; preds = %17
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %27

22:                                               ; preds = %17
  %23 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  br label %24

24:                                               ; preds = %22
  %25 = load i32, ptr %7, align 4, !tbaa !9
  %26 = add nsw i32 %25, 1
  store i32 %26, ptr %7, align 4, !tbaa !9
  br label %17, !llvm.loop !13

27:                                               ; preds = %21
  %28 = load ptr, ptr %4, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.TreeNode, ptr %28, i32 0, i32 0
  %30 = load i32, ptr %29, align 8, !tbaa !15
  %31 = load i32, ptr %6, align 4, !tbaa !9
  %32 = icmp eq i32 %30, %31
  br i1 %32, label %33, label %35

33:                                               ; preds = %27
  %34 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  br label %35

35:                                               ; preds = %33, %27
  %36 = load ptr, ptr %4, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.TreeNode, ptr %36, i32 0, i32 0
  %38 = load i32, ptr %37, align 8, !tbaa !15
  %39 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, i32 noundef %38)
  %40 = load ptr, ptr %4, align 8, !tbaa !5
  %41 = getelementptr inbounds %struct.TreeNode, ptr %40, i32 0, i32 1
  %42 = load ptr, ptr %41, align 8, !tbaa !16
  %43 = load i32, ptr %5, align 4, !tbaa !9
  %44 = add nsw i32 %43, 1
  %45 = load i32, ptr %6, align 4, !tbaa !9
  call void @printTree(ptr noundef %42, i32 noundef %44, i32 noundef %45)
  br label %46

46:                                               ; preds = %35, %3
  ret void
}

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

!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, !6, i64 16}
!12 = !{!"TreeNode", !10, i64 0, !6, i64 8, !6, i64 16}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = !{!12, !10, i64 0}
!16 = !{!12, !6, i64 8}


; 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.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [4 x i8], align 1

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

; Function Attrs: nofree nounwind uwtable
define dso_local void @printTree(ptr noundef readonly %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #1 {
  %.not16 = icmp eq ptr %0, null
  br i1 %.not16, label %tailrecurse._crit_edge, label %.lr.ph20

.lr.ph20:                                         ; preds = %3, %tailrecurse
  %.tr1318 = phi i32 [ %6, %tailrecurse ], [ %1, %3 ]
  %.tr17 = phi ptr [ %17, %tailrecurse ], [ %0, %3 ]
  %4 = getelementptr inbounds i8, ptr %.tr17, i64 16
  %5 = load ptr, ptr %4, align 8, !tbaa !5
  %6 = add nsw i32 %.tr1318, 1
  tail call void @printTree(ptr noundef %5, i32 noundef %6, i32 noundef %2)
  %7 = icmp sgt i32 %.tr1318, 0
  br i1 %7, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %.lr.ph20
  %8 = load i32, ptr %.tr17, align 8, !tbaa !11
  %9 = icmp eq i32 %8, %2
  br i1 %9, label %12, label %tailrecurse

.lr.ph:                                           ; preds = %.lr.ph20, %.lr.ph
  %.015 = phi i32 [ %11, %.lr.ph ], [ 0, %.lr.ph20 ]
  %10 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  %11 = add nuw nsw i32 %.015, 1
  %exitcond.not = icmp eq i32 %11, %.tr1318
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !12

12:                                               ; preds = %._crit_edge
  %13 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2)
  %.pre = load i32, ptr %.tr17, align 8, !tbaa !11
  br label %tailrecurse

tailrecurse:                                      ; preds = %12, %._crit_edge
  %14 = phi i32 [ %.pre, %12 ], [ %8, %._crit_edge ]
  %15 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i32 noundef %14)
  %16 = getelementptr inbounds i8, ptr %.tr17, i64 8
  %17 = load ptr, ptr %16, align 8, !tbaa !14
  %.not = icmp eq ptr %17, null
  br i1 %.not, label %tailrecurse._crit_edge, label %.lr.ph20

tailrecurse._crit_edge:                           ; preds = %tailrecurse, %3
  ret void
}

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 = { 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" }

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


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