; LLVM IR from Thre4dripper/DSA-Programs :: 17. Sorting Algorithms/TreeSort.ll (Z13SortByInorderPiP4Node)

; 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 }

@_ZZ13SortByInorderPiP4NodeE5index = external hidden global i32, align 4

; Function Attrs: mustprogress uwtable
define dso_local void @_Z13SortByInorderPiP4Node(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %5 = load ptr, ptr %4, align 8, !tbaa !5
  %6 = icmp ne ptr %5, null
  br i1 %6, label %7, label %36

7:                                                ; preds = %2
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.Node, ptr %8, i32 0, i32 1
  %10 = load ptr, ptr %9, align 8, !tbaa !9
  %11 = icmp ne ptr %10, null
  br i1 %11, label %12, label %17

12:                                               ; preds = %7
  %13 = load ptr, ptr %3, align 8, !tbaa !5
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.Node, ptr %14, i32 0, i32 1
  %16 = load ptr, ptr %15, align 8, !tbaa !9
  call void @_Z13SortByInorderPiP4Node(ptr noundef %13, ptr noundef %16)
  br label %17

17:                                               ; preds = %12, %7
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.Node, ptr %18, i32 0, i32 0
  %20 = load i32, ptr %19, align 8, !tbaa !12
  %21 = load ptr, ptr %3, align 8, !tbaa !5
  %22 = load i32, ptr @_ZZ13SortByInorderPiP4NodeE5index, align 4, !tbaa !13
  %23 = add nsw i32 %22, 1
  store i32 %23, ptr @_ZZ13SortByInorderPiP4NodeE5index, align 4, !tbaa !13
  %24 = sext i32 %22 to i64
  %25 = getelementptr inbounds i32, ptr %21, i64 %24
  store i32 %20, ptr %25, align 4, !tbaa !13
  %26 = load ptr, ptr %4, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.Node, ptr %26, i32 0, i32 2
  %28 = load ptr, ptr %27, align 8, !tbaa !14
  %29 = icmp ne ptr %28, null
  br i1 %29, label %30, label %35

30:                                               ; preds = %17
  %31 = load ptr, ptr %3, align 8, !tbaa !5
  %32 = load ptr, ptr %4, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct.Node, ptr %32, i32 0, i32 2
  %34 = load ptr, ptr %33, align 8, !tbaa !14
  call void @_Z13SortByInorderPiP4Node(ptr noundef %31, ptr noundef %34)
  br label %35

35:                                               ; preds = %30, %17
  br label %36

36:                                               ; preds = %35, %2
  ret void
}

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" }

!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 8}
!10 = !{!"_ZTS4Node", !11, i64 0, !6, i64 8, !6, i64 16}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !11, i64 0}
!13 = !{!11, !11, i64 0}
!14 = !{!10, !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"

@_ZZ13SortByInorderPiP4NodeE5index = external hidden local_unnamed_addr global i32, align 4

; Function Attrs: mustprogress nofree nosync nounwind memory(readwrite, inaccessiblemem: none) uwtable
define dso_local void @_Z13SortByInorderPiP4Node(ptr nocapture noundef writeonly %0, ptr noundef readonly %1) local_unnamed_addr #0 {
  br label %tailrecurse

tailrecurse:                                      ; preds = %7, %2
  %.tr13 = phi ptr [ %1, %2 ], [ %14, %7 ]
  %.not = icmp eq ptr %.tr13, null
  br i1 %.not, label %15, label %3

3:                                                ; preds = %tailrecurse
  %4 = getelementptr inbounds i8, ptr %.tr13, i64 8
  %5 = load ptr, ptr %4, align 8, !tbaa !5
  %.not11 = icmp eq ptr %5, null
  br i1 %.not11, label %7, label %6

6:                                                ; preds = %3
  tail call void @_Z13SortByInorderPiP4Node(ptr noundef %0, ptr noundef nonnull %5)
  br label %7

7:                                                ; preds = %6, %3
  %8 = load i32, ptr %.tr13, align 8, !tbaa !11
  %9 = load i32, ptr @_ZZ13SortByInorderPiP4NodeE5index, align 4, !tbaa !12
  %10 = add nsw i32 %9, 1
  store i32 %10, ptr @_ZZ13SortByInorderPiP4NodeE5index, align 4, !tbaa !12
  %11 = sext i32 %9 to i64
  %12 = getelementptr inbounds i32, ptr %0, i64 %11
  store i32 %8, ptr %12, align 4, !tbaa !12
  %13 = getelementptr inbounds i8, ptr %.tr13, i64 16
  %14 = load ptr, ptr %13, align 8, !tbaa !13
  %.not12 = icmp eq ptr %14, null
  br i1 %.not12, label %15, label %tailrecurse

15:                                               ; preds = %7, %tailrecurse
  ret void
}

attributes #0 = { mustprogress nofree nosync nounwind memory(readwrite, inaccessiblemem: none) 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 8}
!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 = !{!7, !7, i64 0}
!13 = !{!6, !10, i64 16}


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