; LLVM IR from Tunghohin/Competitive_Coding :: Hdu/hdu1166.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 }

@a = external dso_local global [50010 x i32], align 16
@tr = external dso_local global [200040 x %struct.Node], align 16

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z7push_upi(i32 noundef) #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 %struct.Node, align 4
  %9 = 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
  %10 = load i32, ptr %5, align 4, !tbaa !5
  %11 = load i32, ptr %6, align 4, !tbaa !5
  %12 = icmp eq i32 %10, %11
  br i1 %12, label %13, label %26

13:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 12, ptr %7) #4
  %14 = getelementptr inbounds %struct.Node, ptr %7, i32 0, i32 0
  %15 = load i32, ptr %5, align 4, !tbaa !5
  store i32 %15, ptr %14, align 4, !tbaa !9
  %16 = getelementptr inbounds %struct.Node, ptr %7, i32 0, i32 1
  %17 = load i32, ptr %6, align 4, !tbaa !5
  store i32 %17, ptr %16, align 4, !tbaa !11
  %18 = getelementptr inbounds %struct.Node, ptr %7, i32 0, i32 2
  %19 = load i32, ptr %5, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds [50010 x i32], ptr @a, i64 0, i64 %20
  %22 = load i32, ptr %21, align 4, !tbaa !5
  store i32 %22, ptr %18, align 4, !tbaa !12
  %23 = load i32, ptr %4, align 4, !tbaa !5
  %24 = sext i32 %23 to i64
  %25 = getelementptr inbounds [200040 x %struct.Node], ptr @tr, i64 0, i64 %24
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %25, ptr align 4 %7, i64 12, i1 false), !tbaa.struct !13
  call void @llvm.lifetime.end.p0(i64 12, ptr %7) #4
  br label %50

26:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 12, ptr %8) #4
  %27 = getelementptr inbounds %struct.Node, ptr %8, i32 0, i32 0
  %28 = load i32, ptr %5, align 4, !tbaa !5
  store i32 %28, ptr %27, align 4, !tbaa !9
  %29 = getelementptr inbounds %struct.Node, ptr %8, i32 0, i32 1
  %30 = load i32, ptr %6, align 4, !tbaa !5
  store i32 %30, ptr %29, align 4, !tbaa !11
  %31 = getelementptr inbounds %struct.Node, ptr %8, i32 0, i32 2
  store i32 0, ptr %31, align 4, !tbaa !12
  %32 = load i32, ptr %4, align 4, !tbaa !5
  %33 = sext i32 %32 to i64
  %34 = getelementptr inbounds [200040 x %struct.Node], ptr @tr, i64 0, i64 %33
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %34, ptr align 4 %8, i64 12, i1 false), !tbaa.struct !13
  call void @llvm.lifetime.end.p0(i64 12, ptr %8) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #4
  %35 = load i32, ptr %5, align 4, !tbaa !5
  %36 = load i32, ptr %6, align 4, !tbaa !5
  %37 = add nsw i32 %35, %36
  %38 = ashr i32 %37, 1
  store i32 %38, ptr %9, align 4, !tbaa !5
  %39 = load i32, ptr %4, align 4, !tbaa !5
  %40 = shl i32 %39, 1
  %41 = load i32, ptr %5, align 4, !tbaa !5
  %42 = load i32, ptr %9, align 4, !tbaa !5
  call void @_Z5buildiii(i32 noundef %40, i32 noundef %41, i32 noundef %42)
  %43 = load i32, ptr %4, align 4, !tbaa !5
  %44 = shl i32 %43, 1
  %45 = or i32 %44, 1
  %46 = load i32, ptr %9, align 4, !tbaa !5
  %47 = add nsw i32 %46, 1
  %48 = load i32, ptr %6, align 4, !tbaa !5
  call void @_Z5buildiii(i32 noundef %45, i32 noundef %47, i32 noundef %48)
  %49 = load i32, ptr %4, align 4, !tbaa !5
  call void @_Z7push_upi(i32 noundef %49)
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #4
  br label %50

50:                                               ; preds = %26, %13
  ret void
}

; 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 nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #3

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

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 = { 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { nocallback nofree 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 }

@a = external dso_local local_unnamed_addr global [50010 x i32], align 16
@tr = external dso_local local_unnamed_addr global [200040 x %struct.Node], align 16

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z7push_upi(i32 noundef) local_unnamed_addr #0

; 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 %1, %2
  br i1 %4, label %common.ret, label %10

common.ret:                                       ; preds = %3
  %5 = sext i32 %1 to i64
  %6 = getelementptr inbounds [50010 x i32], ptr @a, i64 0, i64 %5
  %7 = load i32, ptr %6, align 4, !tbaa !5
  %8 = sext i32 %0 to i64
  %9 = getelementptr inbounds [200040 x %struct.Node], ptr @tr, i64 0, i64 %8
  store i32 %1, ptr %9, align 4, !tbaa !5
  %.sroa.43.0..sroa_idx = getelementptr inbounds i8, ptr %9, i64 4
  store i32 %1, ptr %.sroa.43.0..sroa_idx, align 4, !tbaa !5
  %.sroa.54.0..sroa_idx = getelementptr inbounds i8, ptr %9, i64 8
  store i32 %7, ptr %.sroa.54.0..sroa_idx, align 4, !tbaa !5
  br label %common.ret23

common.ret23:                                     ; preds = %10, %common.ret
  ret void

10:                                               ; preds = %3
  %11 = sext i32 %0 to i64
  %12 = getelementptr inbounds [200040 x %struct.Node], ptr @tr, i64 0, i64 %11
  store i32 %1, ptr %12, align 4, !tbaa !5
  %.sroa.4.0..sroa_idx = getelementptr inbounds i8, ptr %12, i64 4
  store i32 %2, ptr %.sroa.4.0..sroa_idx, align 4, !tbaa !5
  %.sroa.5.0..sroa_idx = getelementptr inbounds i8, ptr %12, i64 8
  store i32 0, ptr %.sroa.5.0..sroa_idx, align 4, !tbaa !5
  %13 = add nsw i32 %2, %1
  %14 = ashr i32 %13, 1
  %15 = shl i32 %0, 1
  tail call void @_Z5buildiii(i32 noundef %15, i32 noundef %1, i32 noundef %14)
  %16 = or disjoint i32 %15, 1
  %17 = add nsw i32 %14, 1
  tail call void @_Z5buildiii(i32 noundef %16, i32 noundef %17, i32 noundef %2)
  tail call void @_Z7push_upi(i32 noundef %0)
  br label %common.ret23
}

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,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass