; LLVM IR from UtkarshPathrabe/Competitive-Coding :: Model Algorithms/Binary Search Tree (Print BST keys in the given range)

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

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

; Function Attrs: mustprogress uwtable
define dso_local void @_Z12printBetweenP4nodeii(ptr noundef %0, i32 noundef %1, i32 noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = 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
  %7 = load ptr, ptr %4, align 8, !tbaa !5
  %8 = icmp eq ptr %7, null
  br i1 %8, label %9, label %10

9:                                                ; preds = %3
  br label %51

10:                                               ; preds = %3
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.node, ptr %11, i32 0, i32 0
  %13 = load i32, ptr %12, align 8, !tbaa !11
  %14 = load i32, ptr %5, align 4, !tbaa !9
  %15 = icmp sgt i32 %13, %14
  br i1 %15, label %16, label %22

16:                                               ; preds = %10
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.node, ptr %17, i32 0, i32 1
  %19 = load ptr, ptr %18, align 8, !tbaa !13
  %20 = load i32, ptr %5, align 4, !tbaa !9
  %21 = load i32, ptr %6, align 4, !tbaa !9
  call void @_Z12printBetweenP4nodeii(ptr noundef %19, i32 noundef %20, i32 noundef %21)
  br label %22

22:                                               ; preds = %16, %10
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.node, ptr %23, i32 0, i32 0
  %25 = load i32, ptr %24, align 8, !tbaa !11
  %26 = load i32, ptr %5, align 4, !tbaa !9
  %27 = icmp sge i32 %25, %26
  br i1 %27, label %28, label %39

28:                                               ; preds = %22
  %29 = load ptr, ptr %4, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.node, ptr %29, i32 0, i32 0
  %31 = load i32, ptr %30, align 8, !tbaa !11
  %32 = load i32, ptr %6, align 4, !tbaa !9
  %33 = icmp sle i32 %31, %32
  br i1 %33, label %34, label %39

34:                                               ; preds = %28
  %35 = load ptr, ptr %4, align 8, !tbaa !5
  %36 = getelementptr inbounds %struct.node, ptr %35, i32 0, i32 0
  %37 = load i32, ptr %36, align 8, !tbaa !11
  %38 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %37)
  br label %39

39:                                               ; preds = %34, %28, %22
  %40 = load ptr, ptr %4, align 8, !tbaa !5
  %41 = getelementptr inbounds %struct.node, ptr %40, i32 0, i32 0
  %42 = load i32, ptr %41, align 8, !tbaa !11
  %43 = load i32, ptr %6, align 4, !tbaa !9
  %44 = icmp slt i32 %42, %43
  br i1 %44, label %45, label %51

45:                                               ; preds = %39
  %46 = load ptr, ptr %4, align 8, !tbaa !5
  %47 = getelementptr inbounds %struct.node, ptr %46, i32 0, i32 2
  %48 = load ptr, ptr %47, align 8, !tbaa !14
  %49 = load i32, ptr %5, align 4, !tbaa !9
  %50 = load i32, ptr %6, align 4, !tbaa !9
  call void @_Z12printBetweenP4nodeii(ptr noundef %48, i32 noundef %49, i32 noundef %50)
  br label %51

51:                                               ; preds = %45, %39, %9
  ret void
}

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

attributes #0 = { mustprogress 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 = { "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, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"_ZTS4node", !10, i64 0, !6, i64 8, !6, i64 16}
!13 = !{!12, !6, i64 8}
!14 = !{!12, !6, i64 16}


; 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 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress nofree nounwind uwtable
define dso_local void @_Z12printBetweenP4nodeii(ptr noundef readonly %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = icmp eq ptr %0, null
  br i1 %4, label %tailrecurse._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %3, %tailrecurse
  %.tr21 = phi ptr [ %18, %tailrecurse ], [ %0, %3 ]
  %5 = load i32, ptr %.tr21, align 8, !tbaa !5
  %6 = icmp sgt i32 %5, %1
  br i1 %6, label %7, label %10

7:                                                ; preds = %.lr.ph
  %8 = getelementptr inbounds i8, ptr %.tr21, i64 8
  %9 = load ptr, ptr %8, align 8, !tbaa !11
  tail call void @_Z12printBetweenP4nodeii(ptr noundef %9, i32 noundef %1, i32 noundef %2)
  %.pre = load i32, ptr %.tr21, align 8, !tbaa !5
  br label %10

10:                                               ; preds = %7, %.lr.ph
  %11 = phi i32 [ %.pre, %7 ], [ %5, %.lr.ph ]
  %.not = icmp slt i32 %11, %1
  %.not18 = icmp sgt i32 %11, %2
  %or.cond = or i1 %.not, %.not18
  br i1 %or.cond, label %14, label %12

12:                                               ; preds = %10
  %13 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %11)
  %.pre22 = load i32, ptr %.tr21, align 8, !tbaa !5
  br label %14

14:                                               ; preds = %12, %10
  %15 = phi i32 [ %.pre22, %12 ], [ %11, %10 ]
  %16 = icmp slt i32 %15, %2
  br i1 %16, label %tailrecurse, label %tailrecurse._crit_edge

tailrecurse:                                      ; preds = %14
  %17 = getelementptr inbounds i8, ptr %.tr21, i64 16
  %18 = load ptr, ptr %17, align 8, !tbaa !12
  %19 = icmp eq ptr %18, null
  br i1 %19, label %tailrecurse._crit_edge, label %.lr.ph

tailrecurse._crit_edge:                           ; preds = %14, %tailrecurse, %3
  ret void
}

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

attributes #0 = { mustprogress 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" }
attributes #1 = { 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" }

!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, !7, i64 0}
!6 = !{!"_ZTS4node", !7, i64 0, !10, i64 8, !10, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 8}
!12 = !{!6, !10, i64 16}


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