; LLVM IR from viveakrt/Competitive-programing :: SPOJ/kquery.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, i32, i32 }

@tree = external dso_local global [1000000 x %struct.node], align 16
@cnt = external dso_local global i32, align 4

; Function Attrs: mustprogress uwtable
define dso_local void @_Z5buildiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) #0 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, 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
  %8 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) @cnt, ptr noundef nonnull align 4 dereferenceable(4) %6)
  %9 = load i32, ptr %8, align 4, !tbaa !5
  store i32 %9, ptr @cnt, 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 %14

13:                                               ; preds = %3
  br label %42

14:                                               ; preds = %3
  %15 = load i32, ptr %6, align 4, !tbaa !5
  %16 = mul nsw i32 %15, 2
  %17 = load i32, ptr %6, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds [1000000 x %struct.node], ptr @tree, i64 0, i64 %18
  %20 = getelementptr inbounds %struct.node, ptr %19, i32 0, i32 0
  store i32 %16, ptr %20, align 4, !tbaa !9
  %21 = load i32, ptr %6, align 4, !tbaa !5
  %22 = mul nsw i32 %21, 2
  %23 = add nsw i32 %22, 1
  %24 = load i32, ptr %6, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [1000000 x %struct.node], ptr @tree, i64 0, i64 %25
  %27 = getelementptr inbounds %struct.node, ptr %26, i32 0, i32 1
  store i32 %23, ptr %27, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  %28 = load i32, ptr %4, align 4, !tbaa !5
  %29 = load i32, ptr %5, align 4, !tbaa !5
  %30 = add nsw i32 %28, %29
  %31 = sdiv i32 %30, 2
  store i32 %31, ptr %7, align 4, !tbaa !5
  %32 = load i32, ptr %4, align 4, !tbaa !5
  %33 = load i32, ptr %7, align 4, !tbaa !5
  %34 = load i32, ptr %6, align 4, !tbaa !5
  %35 = mul nsw i32 %34, 2
  call void @_Z5buildiii(i32 noundef %32, i32 noundef %33, i32 noundef %35)
  %36 = load i32, ptr %7, align 4, !tbaa !5
  %37 = add nsw i32 %36, 1
  %38 = load i32, ptr %5, align 4, !tbaa !5
  %39 = load i32, ptr %6, align 4, !tbaa !5
  %40 = mul nsw i32 %39, 2
  %41 = add nsw i32 %40, 1
  call void @_Z5buildiii(i32 noundef %37, i32 noundef %38, i32 noundef %41)
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %42

42:                                               ; preds = %14, %13
  ret void
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

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


; 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, i32, i32 }

@tree = external dso_local local_unnamed_addr global [1000000 x %struct.node], align 16
@cnt = external dso_local global i32, align 4

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z5buildiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = alloca i32, align 4
  store i32 %2, ptr %4, align 4, !tbaa !5
  %5 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) @cnt, ptr noundef nonnull align 4 dereferenceable(4) %4)
  %6 = load i32, ptr %5, align 4, !tbaa !5
  store i32 %6, ptr @cnt, align 4, !tbaa !5
  %7 = icmp eq i32 %0, %1
  br i1 %7, label %21, label %8

8:                                                ; preds = %3
  %9 = load i32, ptr %4, align 4, !tbaa !5
  %10 = shl nsw i32 %9, 1
  %11 = sext i32 %9 to i64
  %12 = getelementptr inbounds [1000000 x %struct.node], ptr @tree, i64 0, i64 %11
  store i32 %10, ptr %12, align 4, !tbaa !9
  %13 = or disjoint i32 %10, 1
  %14 = getelementptr inbounds [1000000 x %struct.node], ptr @tree, i64 0, i64 %11, i32 1
  store i32 %13, ptr %14, align 4, !tbaa !11
  %15 = add nsw i32 %1, %0
  %16 = sdiv i32 %15, 2
  call void @_Z5buildiii(i32 noundef %0, i32 noundef %16, i32 noundef %10)
  %17 = add nsw i32 %16, 1
  %18 = load i32, ptr %4, align 4, !tbaa !5
  %19 = shl nsw i32 %18, 1
  %20 = or disjoint i32 %19, 1
  call void @_Z5buildiii(i32 noundef %17, i32 noundef %1, i32 noundef %20)
  br label %21

21:                                               ; preds = %3, %8
  ret void
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #1

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" }
attributes #1 = { inlinehint 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"}
!9 = !{!10, !6, i64 0}
!10 = !{!"_ZTS4node", !6, i64 0, !6, i64 4, !6, i64 8}
!11 = !{!10, !6, i64 4}


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