; LLVM IR from viveakrt/Competitive-programing :: SPOJ/psegtree.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 [13107200 x %struct.node], align 16
@res = external dso_local global [131072 x i32], align 16
@cnt = external dso_local global i32, align 4

; 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) #0

; Function Attrs: mustprogress uwtable
define dso_local void @_Z5buildiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) #1 {
  %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
  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
  %9 = 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)
  %10 = load i32, ptr %9, align 4, !tbaa !5
  store i32 %10, ptr @cnt, align 4, !tbaa !5
  %11 = load i32, ptr %4, align 4, !tbaa !5
  %12 = load i32, ptr %5, align 4, !tbaa !5
  %13 = icmp eq i32 %11, %12
  br i1 %13, label %14, label %25

14:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 12, ptr %7) #4
  %15 = getelementptr inbounds %struct.node, ptr %7, i32 0, i32 0
  %16 = load i32, ptr %4, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [131072 x i32], ptr @res, i64 0, i64 %17
  %19 = load i32, ptr %18, align 4, !tbaa !5
  store i32 %19, ptr %15, align 4, !tbaa !9
  %20 = getelementptr inbounds %struct.node, ptr %7, i32 0, i32 1
  store i32 0, ptr %20, align 4, !tbaa !11
  %21 = getelementptr inbounds %struct.node, ptr %7, i32 0, i32 2
  store i32 0, ptr %21, align 4, !tbaa !12
  %22 = load i32, ptr %6, align 4, !tbaa !5
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds [13107200 x %struct.node], ptr @tree, i64 0, i64 %23
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %24, ptr align 4 %7, i64 12, i1 false), !tbaa.struct !13
  call void @llvm.lifetime.end.p0(i64 12, ptr %7) #4
  br label %71

25:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  %26 = load i32, ptr %4, align 4, !tbaa !5
  %27 = load i32, ptr %5, align 4, !tbaa !5
  %28 = add nsw i32 %26, %27
  %29 = sdiv i32 %28, 2
  store i32 %29, ptr %8, align 4, !tbaa !5
  %30 = load i32, ptr %4, align 4, !tbaa !5
  %31 = load i32, ptr %8, align 4, !tbaa !5
  %32 = load i32, ptr %6, align 4, !tbaa !5
  %33 = mul nsw i32 %32, 2
  call void @_Z5buildiii(i32 noundef %30, i32 noundef %31, i32 noundef %33)
  %34 = load i32, ptr %8, align 4, !tbaa !5
  %35 = add nsw i32 %34, 1
  %36 = load i32, ptr %5, align 4, !tbaa !5
  %37 = load i32, ptr %6, align 4, !tbaa !5
  %38 = mul nsw i32 %37, 2
  %39 = add nsw i32 %38, 1
  call void @_Z5buildiii(i32 noundef %35, i32 noundef %36, i32 noundef %39)
  %40 = load i32, ptr %6, align 4, !tbaa !5
  %41 = mul nsw i32 %40, 2
  %42 = load i32, ptr %6, align 4, !tbaa !5
  %43 = sext i32 %42 to i64
  %44 = getelementptr inbounds [13107200 x %struct.node], ptr @tree, i64 0, i64 %43
  %45 = getelementptr inbounds %struct.node, ptr %44, i32 0, i32 1
  store i32 %41, ptr %45, align 4, !tbaa !11
  %46 = load i32, ptr %6, align 4, !tbaa !5
  %47 = mul nsw i32 %46, 2
  %48 = add nsw i32 %47, 1
  %49 = load i32, ptr %6, align 4, !tbaa !5
  %50 = sext i32 %49 to i64
  %51 = getelementptr inbounds [13107200 x %struct.node], ptr @tree, i64 0, i64 %50
  %52 = getelementptr inbounds %struct.node, ptr %51, i32 0, i32 2
  store i32 %48, ptr %52, align 4, !tbaa !12
  %53 = load i32, ptr %6, align 4, !tbaa !5
  %54 = mul nsw i32 %53, 2
  %55 = sext i32 %54 to i64
  %56 = getelementptr inbounds [13107200 x %struct.node], ptr @tree, i64 0, i64 %55
  %57 = getelementptr inbounds %struct.node, ptr %56, i32 0, i32 0
  %58 = load i32, ptr %57, align 4, !tbaa !9
  %59 = load i32, ptr %6, align 4, !tbaa !5
  %60 = mul nsw i32 %59, 2
  %61 = add nsw i32 %60, 1
  %62 = sext i32 %61 to i64
  %63 = getelementptr inbounds [13107200 x %struct.node], ptr @tree, i64 0, i64 %62
  %64 = getelementptr inbounds %struct.node, ptr %63, i32 0, i32 0
  %65 = load i32, ptr %64, align 4, !tbaa !9
  %66 = add nsw i32 %58, %65
  %67 = load i32, ptr %6, align 4, !tbaa !5
  %68 = sext i32 %67 to i64
  %69 = getelementptr inbounds [13107200 x %struct.node], ptr @tree, i64 0, i64 %68
  %70 = getelementptr inbounds %struct.node, ptr %69, i32 0, i32 0
  store i32 %66, ptr %70, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  br label %71

71:                                               ; preds = %25, %14
  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)) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

attributes #0 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 #3 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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, !6, i64 4, !6, i64 8}
!11 = !{!10, !6, i64 4}
!12 = !{!10, !6, i64 8}
!13 = !{i64 0, i64 4, !5, i64 4, i64 4, !5, i64 8, 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, i32, i32 }

@tree = external dso_local local_unnamed_addr global [13107200 x %struct.node], align 16
@res = external dso_local local_unnamed_addr global [131072 x i32], 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 %8, label %15

8:                                                ; preds = %3
  %9 = sext i32 %0 to i64
  %10 = getelementptr inbounds [131072 x i32], ptr @res, i64 0, i64 %9
  %11 = load i32, ptr %10, align 4, !tbaa !5
  %12 = load i32, ptr %4, align 4, !tbaa !5
  %13 = sext i32 %12 to i64
  %14 = getelementptr inbounds [13107200 x %struct.node], ptr @tree, i64 0, i64 %13
  store i32 %11, ptr %14, align 4, !tbaa !5
  %.sroa.4.0..sroa_idx = getelementptr inbounds i8, ptr %14, i64 4
  store i32 0, ptr %.sroa.4.0..sroa_idx, align 4, !tbaa !5
  %.sroa.5.0..sroa_idx = getelementptr inbounds i8, ptr %14, i64 8
  store i32 0, ptr %.sroa.5.0..sroa_idx, align 4, !tbaa !5
  br label %38

15:                                               ; preds = %3
  %16 = add nsw i32 %1, %0
  %17 = sdiv i32 %16, 2
  %18 = load i32, ptr %4, align 4, !tbaa !5
  %19 = shl nsw i32 %18, 1
  call void @_Z5buildiii(i32 noundef %0, i32 noundef %17, i32 noundef %19)
  %20 = add nsw i32 %17, 1
  %21 = load i32, ptr %4, align 4, !tbaa !5
  %22 = shl nsw i32 %21, 1
  %23 = or disjoint i32 %22, 1
  call void @_Z5buildiii(i32 noundef %20, i32 noundef %1, i32 noundef %23)
  %24 = load i32, ptr %4, align 4, !tbaa !5
  %25 = shl nsw i32 %24, 1
  %26 = sext i32 %24 to i64
  %27 = getelementptr inbounds [13107200 x %struct.node], ptr @tree, i64 0, i64 %26, i32 1
  store i32 %25, ptr %27, align 4, !tbaa !9
  %28 = or disjoint i32 %25, 1
  %29 = getelementptr inbounds [13107200 x %struct.node], ptr @tree, i64 0, i64 %26, i32 2
  store i32 %28, ptr %29, align 4, !tbaa !11
  %30 = sext i32 %25 to i64
  %31 = getelementptr inbounds [13107200 x %struct.node], ptr @tree, i64 0, i64 %30
  %32 = load i32, ptr %31, align 8, !tbaa !12
  %33 = sext i32 %28 to i64
  %34 = getelementptr inbounds [13107200 x %struct.node], ptr @tree, i64 0, i64 %33
  %35 = load i32, ptr %34, align 4, !tbaa !12
  %36 = add nsw i32 %35, %32
  %37 = getelementptr inbounds [13107200 x %struct.node], ptr @tree, i64 0, i64 %26
  store i32 %36, ptr %37, align 4, !tbaa !12
  br label %38

38:                                               ; preds = %15, %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 4}
!10 = !{!"_ZTS4node", !6, i64 0, !6, i64 4, !6, i64 8}
!11 = !{!10, !6, i64 8}
!12 = !{!10, !6, i64 0}


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