; LLVM IR from Tunghohin/Competitive_Coding :: Luogu/p2894.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, i32, i32, i32, i32 }

@tr = external dso_local global [2000040 x %struct.Node], 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 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) #1 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca %struct.Node, align 4
  %9 = alloca i32, align 4
  %10 = 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
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  %11 = load i32, ptr %6, align 4, !tbaa !5
  %12 = load i32, ptr %5, align 4, !tbaa !5
  %13 = sub nsw i32 %11, %12
  %14 = add nsw i32 %13, 1
  store i32 %14, ptr %7, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 28, ptr %8) #3
  %15 = getelementptr inbounds %struct.Node, ptr %8, i32 0, i32 0
  %16 = load i32, ptr %5, align 4, !tbaa !5
  store i32 %16, ptr %15, align 4, !tbaa !9
  %17 = getelementptr inbounds %struct.Node, ptr %8, i32 0, i32 1
  %18 = load i32, ptr %6, align 4, !tbaa !5
  store i32 %18, ptr %17, align 4, !tbaa !11
  %19 = getelementptr inbounds %struct.Node, ptr %8, i32 0, i32 2
  %20 = load i32, ptr %7, align 4, !tbaa !5
  store i32 %20, ptr %19, align 4, !tbaa !12
  %21 = getelementptr inbounds %struct.Node, ptr %8, i32 0, i32 3
  %22 = load i32, ptr %7, align 4, !tbaa !5
  store i32 %22, ptr %21, align 4, !tbaa !13
  %23 = getelementptr inbounds %struct.Node, ptr %8, i32 0, i32 4
  %24 = load i32, ptr %7, align 4, !tbaa !5
  store i32 %24, ptr %23, align 4, !tbaa !14
  %25 = getelementptr inbounds %struct.Node, ptr %8, i32 0, i32 5
  %26 = load i32, ptr %7, align 4, !tbaa !5
  store i32 %26, ptr %25, align 4, !tbaa !15
  %27 = getelementptr inbounds %struct.Node, ptr %8, i32 0, i32 6
  store i32 0, ptr %27, align 4, !tbaa !16
  %28 = load i32, ptr %4, align 4, !tbaa !5
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds [2000040 x %struct.Node], ptr @tr, i64 0, i64 %29
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %30, ptr align 4 %8, i64 28, i1 false), !tbaa.struct !17
  call void @llvm.lifetime.end.p0(i64 28, ptr %8) #3
  %31 = load i32, ptr %5, align 4, !tbaa !5
  %32 = load i32, ptr %6, align 4, !tbaa !5
  %33 = icmp eq i32 %31, %32
  br i1 %33, label %34, label %35

34:                                               ; preds = %3
  store i32 1, ptr %9, align 4
  br label %50

35:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  %36 = load i32, ptr %5, align 4, !tbaa !5
  %37 = load i32, ptr %6, align 4, !tbaa !5
  %38 = add nsw i32 %36, %37
  %39 = ashr i32 %38, 1
  store i32 %39, ptr %10, align 4, !tbaa !5
  %40 = load i32, ptr %4, align 4, !tbaa !5
  %41 = shl i32 %40, 1
  %42 = load i32, ptr %5, align 4, !tbaa !5
  %43 = load i32, ptr %10, align 4, !tbaa !5
  call void @_Z5buildiii(i32 noundef %41, i32 noundef %42, i32 noundef %43)
  %44 = load i32, ptr %4, align 4, !tbaa !5
  %45 = shl i32 %44, 1
  %46 = or i32 %45, 1
  %47 = load i32, ptr %10, align 4, !tbaa !5
  %48 = add nsw i32 %47, 1
  %49 = load i32, ptr %6, align 4, !tbaa !5
  call void @_Z5buildiii(i32 noundef %46, i32 noundef %48, i32 noundef %49)
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  store i32 0, ptr %9, align 4
  br label %50

50:                                               ; preds = %35, %34
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  %51 = load i32, ptr %9, align 4
  switch i32 %51, label %53 [
    i32 0, label %52
    i32 1, label %52
  ]

52:                                               ; preds = %50, %50
  ret void

53:                                               ; preds = %50
  unreachable
}

; 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) #2

attributes #0 = { nocallback nofree nosync 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 = { nocallback nofree 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, !6, i64 12, !6, i64 16, !6, i64 20, !6, i64 24}
!11 = !{!10, !6, i64 4}
!12 = !{!10, !6, i64 8}
!13 = !{!10, !6, i64 12}
!14 = !{!10, !6, i64 16}
!15 = !{!10, !6, i64 20}
!16 = !{!10, !6, i64 24}
!17 = !{i64 0, i64 4, !5, i64 4, i64 4, !5, i64 8, i64 4, !5, i64 12, i64 4, !5, i64 16, i64 4, !5, i64 20, i64 4, !5, i64 24, 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, i32, i32, i32, i32 }

@tr = external dso_local local_unnamed_addr global [2000040 x %struct.Node], align 16

; Function Attrs: mustprogress nofree nosync nounwind memory(write, argmem: none, inaccessiblemem: none) uwtable
define dso_local void @_Z5buildiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = sub nsw i32 %2, %1
  %5 = add nsw i32 %4, 1
  %6 = sext i32 %0 to i64
  %7 = getelementptr inbounds [2000040 x %struct.Node], ptr @tr, i64 0, i64 %6
  store i32 %1, ptr %7, align 4, !tbaa !5
  %.sroa.4.0..sroa_idx22 = getelementptr inbounds i8, ptr %7, i64 4
  store i32 %2, ptr %.sroa.4.0..sroa_idx22, align 4, !tbaa !5
  %.sroa.5.0..sroa_idx23 = getelementptr inbounds i8, ptr %7, i64 8
  %8 = insertelement <4 x i32> poison, i32 %5, i64 0
  %9 = shufflevector <4 x i32> %8, <4 x i32> poison, <4 x i32> zeroinitializer
  store <4 x i32> %9, ptr %.sroa.5.0..sroa_idx23, align 4, !tbaa !5
  %.sroa.9.0..sroa_idx27 = getelementptr inbounds i8, ptr %7, i64 24
  store i32 0, ptr %.sroa.9.0..sroa_idx27, align 4, !tbaa !5
  %10 = icmp eq i32 %1, %2
  br i1 %10, label %tailrecurse._crit_edge, label %tailrecurse

tailrecurse:                                      ; preds = %3, %tailrecurse
  %.tr2029 = phi i32 [ %15, %tailrecurse ], [ %1, %3 ]
  %.tr28 = phi i32 [ %14, %tailrecurse ], [ %0, %3 ]
  %11 = add nsw i32 %.tr2029, %2
  %12 = ashr i32 %11, 1
  %13 = shl i32 %.tr28, 1
  tail call void @_Z5buildiii(i32 noundef %13, i32 noundef %.tr2029, i32 noundef %12)
  %14 = or disjoint i32 %13, 1
  %15 = add nsw i32 %12, 1
  %16 = sub nsw i32 %2, %15
  %17 = add nsw i32 %16, 1
  %18 = sext i32 %14 to i64
  %19 = getelementptr inbounds [2000040 x %struct.Node], ptr @tr, i64 0, i64 %18
  store i32 %15, ptr %19, align 4, !tbaa !5
  %.sroa.4.0..sroa_idx = getelementptr inbounds i8, ptr %19, i64 4
  store i32 %2, ptr %.sroa.4.0..sroa_idx, align 8, !tbaa !5
  %.sroa.5.0..sroa_idx = getelementptr inbounds i8, ptr %19, i64 8
  %20 = insertelement <4 x i32> poison, i32 %17, i64 0
  %21 = shufflevector <4 x i32> %20, <4 x i32> poison, <4 x i32> zeroinitializer
  store <4 x i32> %21, ptr %.sroa.5.0..sroa_idx, align 4, !tbaa !5
  %.sroa.9.0..sroa_idx = getelementptr inbounds i8, ptr %19, i64 24
  store i32 0, ptr %.sroa.9.0..sroa_idx, align 4, !tbaa !5
  %22 = icmp eq i32 %15, %2
  br i1 %22, label %tailrecurse._crit_edge, label %tailrecurse

tailrecurse._crit_edge:                           ; preds = %tailrecurse, %3
  ret void
}

attributes #0 = { mustprogress nofree nosync nounwind memory(write, argmem: none, inaccessiblemem: none) 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,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SLPVectorizerPass,SROAPass,SimplifyCFGPass,TailCallElimPass