; LLVM IR from qc-tum/chemtensor :: src/tensor (su2_tree)

; 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.su2_tree_node = type { i32, [2 x ptr] }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: inlinehint nounwind uwtable
declare hidden zeroext i1 @su2_tree_node_is_leaf(ptr noundef) #1

; 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 @su2_tree_find_parent_node(ptr noundef %0, i32 noundef %1) #2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = icmp eq ptr %8, null
  br i1 %9, label %10, label %11

10:                                               ; preds = %2
  store ptr null, ptr %3, align 8
  br label %54

11:                                               ; preds = %2
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = call zeroext i1 @su2_tree_node_is_leaf(ptr noundef %12)
  br i1 %13, label %14, label %15

14:                                               ; preds = %11
  store ptr null, ptr %3, align 8
  br label %54

15:                                               ; preds = %11
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.su2_tree_node, ptr %16, i32 0, i32 1
  %18 = getelementptr inbounds [2 x ptr], ptr %17, i64 0, i64 0
  %19 = load ptr, ptr %18, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.su2_tree_node, ptr %19, i32 0, i32 0
  %21 = load i32, ptr %20, align 8, !tbaa !11
  %22 = load i32, ptr %5, align 4, !tbaa !9
  %23 = icmp eq i32 %21, %22
  br i1 %23, label %33, label %24

24:                                               ; preds = %15
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.su2_tree_node, ptr %25, i32 0, i32 1
  %27 = getelementptr inbounds [2 x ptr], ptr %26, i64 0, i64 1
  %28 = load ptr, ptr %27, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.su2_tree_node, ptr %28, i32 0, i32 0
  %30 = load i32, ptr %29, align 8, !tbaa !11
  %31 = load i32, ptr %5, align 4, !tbaa !9
  %32 = icmp eq i32 %30, %31
  br i1 %32, label %33, label %35

33:                                               ; preds = %24, %15
  %34 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %34, ptr %3, align 8
  br label %54

35:                                               ; preds = %24
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %36 = load ptr, ptr %4, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.su2_tree_node, ptr %36, i32 0, i32 1
  %38 = getelementptr inbounds [2 x ptr], ptr %37, i64 0, i64 0
  %39 = load ptr, ptr %38, align 8, !tbaa !5
  %40 = load i32, ptr %5, align 4, !tbaa !9
  %41 = call ptr @su2_tree_find_parent_node(ptr noundef %39, i32 noundef %40)
  store ptr %41, ptr %6, align 8, !tbaa !5
  %42 = load ptr, ptr %6, align 8, !tbaa !5
  %43 = icmp ne ptr %42, null
  br i1 %43, label %44, label %46

44:                                               ; preds = %35
  %45 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %45, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %53

46:                                               ; preds = %35
  %47 = load ptr, ptr %4, align 8, !tbaa !5
  %48 = getelementptr inbounds %struct.su2_tree_node, ptr %47, i32 0, i32 1
  %49 = getelementptr inbounds [2 x ptr], ptr %48, i64 0, i64 1
  %50 = load ptr, ptr %49, align 8, !tbaa !5
  %51 = load i32, ptr %5, align 4, !tbaa !9
  %52 = call ptr @su2_tree_find_parent_node(ptr noundef %50, i32 noundef %51)
  store ptr %52, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %53

53:                                               ; preds = %46, %44
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %54

54:                                               ; preds = %53, %33, %14, %10
  %55 = load ptr, ptr %3, align 8
  ret ptr %55
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { inlinehint 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 #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, !10, i64 0}
!12 = !{!"su2_tree_node", !10, i64 0, !7, 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"

; Function Attrs: inlinehint nounwind uwtable
declare hidden zeroext i1 @su2_tree_node_is_leaf(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local ptr @su2_tree_find_parent_node(ptr noundef %0, i32 noundef %1) local_unnamed_addr #1 {
  %3 = icmp eq ptr %0, null
  br i1 %3, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2, %tailrecurse
  %.tr17 = phi ptr [ %17, %tailrecurse ], [ %0, %2 ]
  %4 = tail call zeroext i1 @su2_tree_node_is_leaf(ptr noundef nonnull %.tr17)
  br i1 %4, label %._crit_edge, label %5

5:                                                ; preds = %.lr.ph
  %6 = getelementptr inbounds i8, ptr %.tr17, i64 8
  %7 = load ptr, ptr %6, align 8, !tbaa !5
  %8 = load i32, ptr %7, align 8, !tbaa !9
  %9 = icmp eq i32 %8, %1
  br i1 %9, label %._crit_edge, label %10

10:                                               ; preds = %5
  %11 = getelementptr inbounds i8, ptr %.tr17, i64 16
  %12 = load ptr, ptr %11, align 8, !tbaa !5
  %13 = load i32, ptr %12, align 8, !tbaa !9
  %14 = icmp eq i32 %13, %1
  br i1 %14, label %._crit_edge, label %15

15:                                               ; preds = %10
  %16 = tail call ptr @su2_tree_find_parent_node(ptr noundef nonnull %7, i32 noundef %1)
  %.not = icmp eq ptr %16, null
  br i1 %.not, label %tailrecurse, label %._crit_edge

tailrecurse:                                      ; preds = %15
  %17 = load ptr, ptr %11, align 8, !tbaa !5
  %18 = icmp eq ptr %17, null
  br i1 %18, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %tailrecurse, %.lr.ph, %10, %5, %15, %2
  %.1 = phi ptr [ null, %2 ], [ %16, %15 ], [ %.tr17, %5 ], [ %.tr17, %10 ], [ null, %.lr.ph ], [ null, %tailrecurse ]
  ret ptr %.1
}

attributes #0 = { inlinehint 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 = { 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, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !11, i64 0}
!10 = !{!"su2_tree_node", !11, i64 0, !7, i64 8}
!11 = !{!"int", !7, i64 0}


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