; LLVM IR from fmela/libdict :: src (rb_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.rb_tree = type { ptr, i64, ptr, i64 }
%struct.rb_node = type { ptr, ptr, i64, ptr, ptr }

; 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

; Function Attrs: nounwind uwtable
define dso_local i64 @rb_tree_traverse(ptr noundef %0, ptr noundef %1, ptr noundef %2) #1 {
  %4 = alloca i64, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  %9 = alloca ptr, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !5
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.rb_tree, ptr %10, i32 0, i32 0
  %12 = load ptr, ptr %11, align 8, !tbaa !9
  %13 = icmp eq ptr %12, null
  br i1 %13, label %14, label %15

14:                                               ; preds = %3
  store i64 0, ptr %4, align 8
  br label %42

15:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  store i64 0, ptr %8, align 8, !tbaa !12
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.rb_tree, ptr %16, i32 0, i32 0
  %18 = load ptr, ptr %17, align 8, !tbaa !9
  %19 = call ptr @tree_node_min(ptr noundef %18)
  store ptr %19, ptr %9, align 8, !tbaa !5
  br label %20

20:                                               ; preds = %37, %15
  %21 = load ptr, ptr %9, align 8, !tbaa !5
  %22 = icmp ne ptr %21, null
  br i1 %22, label %23, label %40

23:                                               ; preds = %20
  %24 = load i64, ptr %8, align 8, !tbaa !12
  %25 = add i64 %24, 1
  store i64 %25, ptr %8, align 8, !tbaa !12
  %26 = load ptr, ptr %6, align 8, !tbaa !5
  %27 = load ptr, ptr %9, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.rb_node, ptr %27, i32 0, i32 0
  %29 = load ptr, ptr %28, align 8, !tbaa !13
  %30 = load ptr, ptr %9, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct.rb_node, ptr %30, i32 0, i32 1
  %32 = load ptr, ptr %31, align 8, !tbaa !15
  %33 = load ptr, ptr %7, align 8, !tbaa !5
  %34 = call zeroext i1 %26(ptr noundef %29, ptr noundef %32, ptr noundef %33)
  br i1 %34, label %36, label %35

35:                                               ; preds = %23
  br label %40

36:                                               ; preds = %23
  br label %37

37:                                               ; preds = %36
  %38 = load ptr, ptr %9, align 8, !tbaa !5
  %39 = call ptr @node_next(ptr noundef %38)
  store ptr %39, ptr %9, align 8, !tbaa !5
  br label %20, !llvm.loop !16

40:                                               ; preds = %35, %20
  %41 = load i64, ptr %8, align 8, !tbaa !12
  store i64 %41, ptr %4, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  br label %42

42:                                               ; preds = %40, %14
  %43 = load i64, ptr %4, align 8
  ret i64 %43
}

declare ptr @tree_node_min(ptr noundef) #2

; Function Attrs: nounwind uwtable
declare hidden ptr @node_next(ptr noundef) #1

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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" }
attributes #2 = { "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, !6, i64 0}
!10 = !{!"rb_tree", !6, i64 0, !11, i64 8, !6, i64 16, !11, i64 24}
!11 = !{!"long", !7, i64 0}
!12 = !{!11, !11, i64 0}
!13 = !{!14, !6, i64 0}
!14 = !{!"rb_node", !6, i64 0, !6, i64 8, !11, i64 16, !6, i64 24, !6, i64 32}
!15 = !{!14, !6, i64 8}
!16 = distinct !{!16, !17}
!17 = !{!"llvm.loop.mustprogress"}


; 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: nounwind uwtable
define dso_local i64 @rb_tree_traverse(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1, ptr noundef %2) local_unnamed_addr #0 {
  %4 = load ptr, ptr %0, align 8, !tbaa !5
  %5 = icmp eq ptr %4, null
  br i1 %5, label %.loopexit, label %6

6:                                                ; preds = %3
  %7 = tail call ptr @tree_node_min(ptr noundef nonnull %4) #2
  %.not13 = icmp eq ptr %7, null
  br i1 %.not13, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %6, %13
  %.015 = phi ptr [ %14, %13 ], [ %7, %6 ]
  %.01014 = phi i64 [ %8, %13 ], [ 0, %6 ]
  %8 = add i64 %.01014, 1
  %9 = load ptr, ptr %.015, align 8, !tbaa !11
  %10 = getelementptr inbounds i8, ptr %.015, i64 8
  %11 = load ptr, ptr %10, align 8, !tbaa !13
  %12 = tail call zeroext i1 %1(ptr noundef %9, ptr noundef %11, ptr noundef %2) #2
  br i1 %12, label %13, label %.loopexit

13:                                               ; preds = %.lr.ph
  %14 = tail call ptr @node_next(ptr noundef nonnull %.015)
  %.not = icmp eq ptr %14, null
  br i1 %.not, label %.loopexit, label %.lr.ph, !llvm.loop !14

.loopexit:                                        ; preds = %.lr.ph, %13, %6, %3
  %.011 = phi i64 [ 0, %3 ], [ 0, %6 ], [ %8, %13 ], [ %8, %.lr.ph ]
  ret i64 %.011
}

declare ptr @tree_node_min(ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare hidden ptr @node_next(ptr noundef) local_unnamed_addr #0

attributes #0 = { 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 = { "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 }

!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 = !{!"rb_tree", !7, i64 0, !10, i64 8, !7, i64 16, !10, i64 24}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!12, !7, i64 0}
!12 = !{!"rb_node", !7, i64 0, !7, i64 8, !10, i64 16, !7, i64 24, !7, i64 32}
!13 = !{!12, !7, i64 8}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


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