; LLVM IR from viveakrt/Competitive-programing :: SPOJ/qtree.ll (Z5buildiii)

; 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 }

@tree = external dso_local global [40004 x %struct.node], align 16
@va = external dso_local global [10001 x i32], align 16

; 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 nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

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

; Function Attrs: mustprogress uwtable
define dso_local void @_Z5buildiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) #2 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca %struct.node, align 4
  %8 = alloca i32, align 4
  %9 = alloca %struct.node, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !5
  %10 = load i32, ptr %4, align 4, !tbaa !5
  %11 = load i32, ptr %5, align 4, !tbaa !5
  %12 = icmp eq i32 %10, %11
  br i1 %12, label %13, label %22

13:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  %14 = getelementptr inbounds %struct.node, ptr %7, i32 0, i32 0
  %15 = load i32, ptr %4, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds [10001 x i32], ptr @va, i64 0, i64 %16
  %18 = load i32, ptr %17, align 4, !tbaa !5
  store i32 %18, ptr %14, align 4, !tbaa !9
  %19 = load i32, ptr %6, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds [40004 x %struct.node], ptr @tree, i64 0, i64 %20
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %21, ptr align 4 %7, i64 4, i1 false), !tbaa.struct !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  br label %51

22:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  %23 = load i32, ptr %4, align 4, !tbaa !5
  %24 = load i32, ptr %5, align 4, !tbaa !5
  %25 = add nsw i32 %23, %24
  %26 = sdiv i32 %25, 2
  store i32 %26, ptr %8, align 4, !tbaa !5
  %27 = load i32, ptr %4, align 4, !tbaa !5
  %28 = load i32, ptr %8, align 4, !tbaa !5
  %29 = load i32, ptr %6, align 4, !tbaa !5
  %30 = mul nsw i32 %29, 2
  call void @_Z5buildiii(i32 noundef %27, i32 noundef %28, i32 noundef %30)
  %31 = load i32, ptr %8, align 4, !tbaa !5
  %32 = add nsw i32 %31, 1
  %33 = load i32, ptr %5, align 4, !tbaa !5
  %34 = load i32, ptr %6, align 4, !tbaa !5
  %35 = mul nsw i32 %34, 2
  %36 = add nsw i32 %35, 1
  call void @_Z5buildiii(i32 noundef %32, i32 noundef %33, i32 noundef %36)
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #4
  %37 = load i32, ptr %6, align 4, !tbaa !5
  %38 = mul nsw i32 %37, 2
  %39 = sext i32 %38 to i64
  %40 = getelementptr inbounds [40004 x %struct.node], ptr @tree, i64 0, i64 %39
  %41 = load i32, ptr %6, align 4, !tbaa !5
  %42 = mul nsw i32 %41, 2
  %43 = add nsw i32 %42, 1
  %44 = sext i32 %43 to i64
  %45 = getelementptr inbounds [40004 x %struct.node], ptr @tree, i64 0, i64 %44
  %46 = call i32 @_ZplRK4nodeS1_(ptr noundef nonnull align 4 dereferenceable(4) %40, ptr noundef nonnull align 4 dereferenceable(4) %45)
  %47 = getelementptr inbounds %struct.node, ptr %9, i32 0, i32 0
  store i32 %46, ptr %47, align 4
  %48 = load i32, ptr %6, align 4, !tbaa !5
  %49 = sext i32 %48 to i64
  %50 = getelementptr inbounds [40004 x %struct.node], ptr @tree, i64 0, i64 %49
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %50, ptr align 4 %9, i64 4, i1 false), !tbaa.struct !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  br label %51

51:                                               ; preds = %22, %13
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local i32 @_ZplRK4nodeS1_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #3

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { mustprogress 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 #4 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !6, i64 0}
!10 = !{!"_ZTS4node", !6, i64 0}
!11 = !{i64 0, i64 4, !5}


; 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"

%struct.node = type { i32 }

@tree = external dso_local global [40004 x %struct.node], align 16
@va = external dso_local local_unnamed_addr global [10001 x i32], align 16

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z5buildiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = icmp eq i32 %0, %1
  br i1 %4, label %5, label %11

5:                                                ; preds = %3
  %6 = sext i32 %0 to i64
  %7 = getelementptr inbounds [10001 x i32], ptr @va, i64 0, i64 %6
  %8 = load i32, ptr %7, align 4, !tbaa !5
  br label %common.ret

common.ret:                                       ; preds = %5, %11
  %.sink = phi i32 [ %8, %5 ], [ %21, %11 ]
  %9 = sext i32 %2 to i64
  %10 = getelementptr inbounds [40004 x %struct.node], ptr @tree, i64 0, i64 %9
  store i32 %.sink, ptr %10, align 4, !tbaa !5
  ret void

11:                                               ; preds = %3
  %12 = add nsw i32 %1, %0
  %13 = sdiv i32 %12, 2
  %14 = shl nsw i32 %2, 1
  tail call void @_Z5buildiii(i32 noundef %0, i32 noundef %13, i32 noundef %14)
  %15 = add nsw i32 %13, 1
  %16 = or disjoint i32 %14, 1
  tail call void @_Z5buildiii(i32 noundef %15, i32 noundef %1, i32 noundef %16)
  %17 = sext i32 %14 to i64
  %18 = getelementptr inbounds [40004 x %struct.node], ptr @tree, i64 0, i64 %17
  %19 = sext i32 %16 to i64
  %20 = getelementptr inbounds [40004 x %struct.node], ptr @tree, i64 0, i64 %19
  %21 = tail call i32 @_ZplRK4nodeS1_(ptr noundef nonnull align 4 dereferenceable(4) %18, ptr noundef nonnull align 4 dereferenceable(4) %20)
  br label %common.ret
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local i32 @_ZplRK4nodeS1_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #0

attributes #0 = { mustprogress 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


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