; LLVM IR from ippeb/ACM-ICPC :: data_structure/binary_search_tree/binary_search_tree.ll (Z9BST_printP4node)

; 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"

%class.node = type { i32, ptr, ptr }

@.str = external hidden unnamed_addr constant [13 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [13 x i8], align 1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z9BST_printP4node(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = icmp eq ptr %3, null
  br i1 %4, label %5, label %6

5:                                                ; preds = %1
  br label %42

6:                                                ; preds = %1
  %7 = load ptr, ptr %2, align 8, !tbaa !5
  %8 = getelementptr inbounds %class.node, ptr %7, i32 0, i32 2
  %9 = load ptr, ptr %8, align 8, !tbaa !9
  %10 = icmp ne ptr %9, null
  br i1 %10, label %11, label %24

11:                                               ; preds = %6
  %12 = load ptr, ptr %2, align 8, !tbaa !5
  %13 = getelementptr inbounds %class.node, ptr %12, i32 0, i32 0
  %14 = load i32, ptr %13, align 8, !tbaa !12
  %15 = load ptr, ptr %2, align 8, !tbaa !5
  %16 = getelementptr inbounds %class.node, ptr %15, i32 0, i32 2
  %17 = load ptr, ptr %16, align 8, !tbaa !9
  %18 = getelementptr inbounds %class.node, ptr %17, i32 0, i32 0
  %19 = load i32, ptr %18, align 8, !tbaa !12
  %20 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %14, i32 noundef %19)
  %21 = load ptr, ptr %2, align 8, !tbaa !5
  %22 = getelementptr inbounds %class.node, ptr %21, i32 0, i32 2
  %23 = load ptr, ptr %22, align 8, !tbaa !9
  call void @_Z9BST_printP4node(ptr noundef %23)
  br label %24

24:                                               ; preds = %11, %6
  %25 = load ptr, ptr %2, align 8, !tbaa !5
  %26 = getelementptr inbounds %class.node, ptr %25, i32 0, i32 1
  %27 = load ptr, ptr %26, align 8, !tbaa !13
  %28 = icmp ne ptr %27, null
  br i1 %28, label %29, label %42

29:                                               ; preds = %24
  %30 = load ptr, ptr %2, align 8, !tbaa !5
  %31 = getelementptr inbounds %class.node, ptr %30, i32 0, i32 0
  %32 = load i32, ptr %31, align 8, !tbaa !12
  %33 = load ptr, ptr %2, align 8, !tbaa !5
  %34 = getelementptr inbounds %class.node, ptr %33, i32 0, i32 1
  %35 = load ptr, ptr %34, align 8, !tbaa !13
  %36 = getelementptr inbounds %class.node, ptr %35, i32 0, i32 0
  %37 = load i32, ptr %36, align 8, !tbaa !12
  %38 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %32, i32 noundef %37)
  %39 = load ptr, ptr %2, align 8, !tbaa !5
  %40 = getelementptr inbounds %class.node, ptr %39, i32 0, i32 1
  %41 = load ptr, ptr %40, align 8, !tbaa !13
  call void @_Z9BST_printP4node(ptr noundef %41)
  br label %42

42:                                               ; preds = %29, %24, %5
  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, !6, i64 16}
!10 = !{!"_ZTS4node", !11, i64 0, !6, i64 8, !6, i64 16}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !11, i64 0}
!13 = !{!10, !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 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [13 x i8], align 1

; Function Attrs: mustprogress nofree nounwind uwtable
define dso_local void @_Z9BST_printP4node(ptr noundef readonly %0) local_unnamed_addr #0 {
  %2 = icmp eq ptr %0, null
  br i1 %2, label %tailrecurse._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1, %tailrecurse
  %.tr12 = phi ptr [ %16, %tailrecurse ], [ %0, %1 ]
  %3 = getelementptr inbounds i8, ptr %.tr12, i64 16
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %.not = icmp eq ptr %4, null
  br i1 %.not, label %10, label %5

5:                                                ; preds = %.lr.ph
  %6 = load i32, ptr %.tr12, align 8, !tbaa !11
  %7 = load i32, ptr %4, align 8, !tbaa !11
  %8 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %6, i32 noundef %7)
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  tail call void @_Z9BST_printP4node(ptr noundef %9)
  br label %10

10:                                               ; preds = %5, %.lr.ph
  %11 = getelementptr inbounds i8, ptr %.tr12, i64 8
  %12 = load ptr, ptr %11, align 8, !tbaa !12
  %.not11 = icmp eq ptr %12, null
  br i1 %.not11, label %tailrecurse._crit_edge, label %tailrecurse

tailrecurse:                                      ; preds = %10
  %13 = load i32, ptr %.tr12, align 8, !tbaa !11
  %14 = load i32, ptr %12, align 8, !tbaa !11
  %15 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %13, i32 noundef %14)
  %16 = load ptr, ptr %11, align 8, !tbaa !12
  %17 = icmp eq ptr %16, null
  br i1 %17, label %tailrecurse._crit_edge, label %.lr.ph

tailrecurse._crit_edge:                           ; preds = %10, %tailrecurse, %1
  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, !10, i64 16}
!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, !7, i64 0}
!12 = !{!6, !10, i64 8}


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