; LLVM IR from hutusi/rethink-c :: src (rbtree)

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

@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [8 x i8], align 1

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

8:                                                ; preds = %2
  br label %43

9:                                                ; preds = %2
  %10 = load ptr, ptr %3, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct._RBTreeNode, ptr %10, i32 0, i32 3
  %12 = load ptr, ptr %11, align 8, !tbaa !11
  %13 = load i32, ptr %4, align 4, !tbaa !9
  %14 = add nsw i32 %13, 1
  call void @rb_tree_subtree_print(ptr noundef %12, i32 noundef %14)
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %15

15:                                               ; preds = %23, %9
  %16 = load i32, ptr %5, align 4, !tbaa !9
  %17 = load i32, ptr %4, align 4, !tbaa !9
  %18 = mul nsw i32 %17, 6
  %19 = icmp slt i32 %16, %18
  br i1 %19, label %21, label %20

20:                                               ; preds = %15
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %26

21:                                               ; preds = %15
  %22 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  br label %23

23:                                               ; preds = %21
  %24 = load i32, ptr %5, align 4, !tbaa !9
  %25 = add nsw i32 %24, 1
  store i32 %25, ptr %5, align 4, !tbaa !9
  br label %15, !llvm.loop !13

26:                                               ; preds = %20
  %27 = load ptr, ptr %3, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct._RBTreeNode, ptr %27, i32 0, i32 0
  %29 = load ptr, ptr %28, align 8, !tbaa !15
  %30 = load i32, ptr %29, align 4, !tbaa !9
  %31 = load ptr, ptr %3, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct._RBTreeNode, ptr %31, i32 0, i32 5
  %33 = load i32, ptr %32, align 8, !tbaa !16
  %34 = icmp eq i32 %33, 0
  %35 = zext i1 %34 to i64
  %36 = select i1 %34, i32 82, i32 66
  %37 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, i32 noundef %30, i32 noundef %36)
  %38 = load ptr, ptr %3, align 8, !tbaa !5
  %39 = getelementptr inbounds %struct._RBTreeNode, ptr %38, i32 0, i32 4
  %40 = load ptr, ptr %39, align 8, !tbaa !17
  %41 = load i32, ptr %4, align 4, !tbaa !9
  %42 = add nsw i32 %41, 1
  call void @rb_tree_subtree_print(ptr noundef %40, i32 noundef %42)
  br label %43

43:                                               ; preds = %26, %8
  ret void
}

declare i32 @printf(ptr noundef, ...) #2

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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !6, i64 24}
!12 = !{!"_RBTreeNode", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !10, i64 40}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = !{!12, !6, i64 0}
!16 = !{!12, !10, i64 40}
!17 = !{!12, !6, i64 32}


; 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.2 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [8 x i8], align 1

; Function Attrs: nofree nounwind uwtable
define dso_local void @rb_tree_subtree_print(ptr noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp eq ptr %0, null
  br i1 %3, label %tailrecurse._crit_edge, label %.lr.ph15.preheader

.lr.ph15.preheader:                               ; preds = %2
  %4 = mul i32 %1, 6
  br label %.lr.ph15

.lr.ph15:                                         ; preds = %.lr.ph15.preheader, %tailrecurse
  %indvars.iv = phi i32 [ %4, %.lr.ph15.preheader ], [ %indvars.iv.next, %tailrecurse ]
  %.tr1013 = phi i32 [ %1, %.lr.ph15.preheader ], [ %7, %tailrecurse ]
  %.tr12 = phi ptr [ %0, %.lr.ph15.preheader ], [ %17, %tailrecurse ]
  %smax = tail call i32 @llvm.smax.i32(i32 %indvars.iv, i32 1)
  %5 = getelementptr inbounds i8, ptr %.tr12, i64 24
  %6 = load ptr, ptr %5, align 8, !tbaa !5
  %7 = add nsw i32 %.tr1013, 1
  tail call void @rb_tree_subtree_print(ptr noundef %6, i32 noundef %7)
  %8 = icmp sgt i32 %.tr1013, 0
  br i1 %8, label %.lr.ph, label %tailrecurse

tailrecurse:                                      ; preds = %.lr.ph, %.lr.ph15
  %9 = load ptr, ptr %.tr12, align 8, !tbaa !11
  %10 = load i32, ptr %9, align 4, !tbaa !12
  %11 = getelementptr inbounds i8, ptr %.tr12, i64 40
  %12 = load i32, ptr %11, align 8, !tbaa !13
  %13 = icmp eq i32 %12, 0
  %14 = select i1 %13, i32 82, i32 66
  %15 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i32 noundef %10, i32 noundef %14)
  %16 = getelementptr inbounds i8, ptr %.tr12, i64 32
  %17 = load ptr, ptr %16, align 8, !tbaa !14
  %18 = icmp eq ptr %17, null
  %indvars.iv.next = add i32 %indvars.iv, 6
  br i1 %18, label %tailrecurse._crit_edge, label %.lr.ph15

.lr.ph:                                           ; preds = %.lr.ph15, %.lr.ph
  %.011 = phi i32 [ %20, %.lr.ph ], [ 0, %.lr.ph15 ]
  %19 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2)
  %20 = add nuw nsw i32 %.011, 1
  %exitcond.not = icmp eq i32 %20, %smax
  br i1 %exitcond.not, label %tailrecurse, label %.lr.ph, !llvm.loop !15

tailrecurse._crit_edge:                           ; preds = %tailrecurse, %2
  ret void
}

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

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smax.i32(i32, i32) #2

attributes #0 = { 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" }
attributes #2 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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 24}
!6 = !{!"_RBTreeNode", !7, i64 0, !7, i64 8, !7, i64 16, !7, i64 24, !7, i64 32, !10, i64 40}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !7, i64 0}
!12 = !{!10, !10, i64 0}
!13 = !{!6, !10, i64 40}
!14 = !{!6, !7, i64 32}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


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