; LLVM IR from lzyrapx/Competitive-Programming :: ACdream/1101（线段树）（区间替换+区间查询LCIS）.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 }

@a = external dso_local global [123456 x i32], align 16
@tree = external dso_local global [493824 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: mustprogress nounwind uwtable
declare dso_local void @_ZN4NodeC2Eiiiiiii(ptr noundef nonnull align 4 dereferenceable(28), i32 noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef) unnamed_addr #1 align 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) #2

; 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) #3 {
  %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 %27

13:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 28, ptr %7) #4
  %14 = load i32, ptr %4, align 4, !tbaa !5
  %15 = load i32, ptr %5, align 4, !tbaa !5
  %16 = load i32, ptr %4, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [123456 x i32], ptr @a, i64 0, i64 %17
  %19 = load i32, ptr %18, align 4, !tbaa !5
  %20 = load i32, ptr %4, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [123456 x i32], ptr @a, i64 0, i64 %21
  %23 = load i32, ptr %22, align 4, !tbaa !5
  call void @_ZN4NodeC2Eiiiiiii(ptr noundef nonnull align 4 dereferenceable(28) %7, i32 noundef %14, i32 noundef %15, i32 noundef %19, i32 noundef %23, i32 noundef 1, i32 noundef 1, i32 noundef 1)
  %24 = load i32, ptr %6, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [493824 x %struct.Node], ptr @tree, i64 0, i64 %25
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %26, ptr align 4 %7, i64 28, i1 false), !tbaa.struct !9
  call void @llvm.lifetime.end.p0(i64 28, ptr %7) #4
  br label %54

27:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  %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 = ashr i32 %30, 1
  store i32 %31, ptr %8, align 4, !tbaa !5
  %32 = load i32, ptr %4, align 4, !tbaa !5
  %33 = load i32, ptr %8, align 4, !tbaa !5
  %34 = load i32, ptr %6, align 4, !tbaa !5
  %35 = shl i32 %34, 1
  call void @_Z5buildiii(i32 noundef %32, i32 noundef %33, i32 noundef %35)
  %36 = load i32, ptr %8, 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 = shl i32 %39, 1
  %41 = or i32 %40, 1
  call void @_Z5buildiii(i32 noundef %37, i32 noundef %38, i32 noundef %41)
  call void @llvm.lifetime.start.p0(i64 28, ptr %9) #4
  %42 = load i32, ptr %6, align 4, !tbaa !5
  %43 = shl i32 %42, 1
  %44 = sext i32 %43 to i64
  %45 = getelementptr inbounds [493824 x %struct.Node], ptr @tree, i64 0, i64 %44
  %46 = load i32, ptr %6, align 4, !tbaa !5
  %47 = shl i32 %46, 1
  %48 = or i32 %47, 1
  %49 = sext i32 %48 to i64
  %50 = getelementptr inbounds [493824 x %struct.Node], ptr @tree, i64 0, i64 %49
  call void @_ZNK4NodeplERKS_(ptr dead_on_unwind writable sret(%struct.Node) align 4 %9, ptr noundef nonnull align 4 dereferenceable(28) %45, ptr noundef nonnull align 4 dereferenceable(28) %50)
  %51 = load i32, ptr %6, align 4, !tbaa !5
  %52 = sext i32 %51 to i64
  %53 = getelementptr inbounds [493824 x %struct.Node], ptr @tree, i64 0, i64 %52
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %53, ptr align 4 %9, i64 28, i1 false), !tbaa.struct !9
  call void @llvm.lifetime.end.p0(i64 28, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  br label %54

54:                                               ; preds = %27, %13
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNK4NodeplERKS_(ptr dead_on_unwind noalias writable sret(%struct.Node) align 4, ptr noundef nonnull align 4 dereferenceable(28), ptr noundef nonnull align 4 dereferenceable(28)) #3 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 #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 = !{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 }

@a = external dso_local local_unnamed_addr global [123456 x i32], align 16
@tree = external dso_local global [493824 x %struct.Node], align 16

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN4NodeC2Eiiiiiii(ptr noundef nonnull align 4 dereferenceable(28), i32 noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef) unnamed_addr #1 align 2

; Function Attrs: mustprogress 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

; Function Attrs: mustprogress 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) local_unnamed_addr #3 {
  %4 = alloca %struct.Node, align 4
  %5 = alloca %struct.Node, align 4
  %6 = icmp eq i32 %0, %1
  br i1 %6, label %common.ret, label %12

common.ret:                                       ; preds = %3
  call void @llvm.lifetime.start.p0(i64 28, ptr nonnull %4) #4
  %7 = sext i32 %0 to i64
  %8 = getelementptr inbounds [123456 x i32], ptr @a, i64 0, i64 %7
  %9 = load i32, ptr %8, align 4, !tbaa !5
  call void @_ZN4NodeC2Eiiiiiii(ptr noundef nonnull align 4 dereferenceable(28) %4, i32 noundef %0, i32 noundef %0, i32 noundef %9, i32 noundef %9, i32 noundef 1, i32 noundef 1, i32 noundef 1)
  %10 = sext i32 %2 to i64
  %11 = getelementptr inbounds [493824 x %struct.Node], ptr @tree, i64 0, i64 %10
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 4 dereferenceable(28) %11, ptr noundef nonnull align 4 dereferenceable(28) %4, i64 28, i1 false), !tbaa.struct !9
  call void @llvm.lifetime.end.p0(i64 28, ptr nonnull %4) #4
  br label %common.ret20

common.ret20:                                     ; preds = %12, %common.ret
  ret void

12:                                               ; preds = %3
  %13 = add nsw i32 %1, %0
  %14 = ashr i32 %13, 1
  %15 = shl i32 %2, 1
  tail call void @_Z5buildiii(i32 noundef %0, i32 noundef %14, i32 noundef %15)
  %16 = add nsw i32 %14, 1
  %17 = or disjoint i32 %15, 1
  tail call void @_Z5buildiii(i32 noundef %16, i32 noundef %1, i32 noundef %17)
  call void @llvm.lifetime.start.p0(i64 28, ptr nonnull %5) #4
  %18 = sext i32 %15 to i64
  %19 = getelementptr inbounds [493824 x %struct.Node], ptr @tree, i64 0, i64 %18
  %20 = sext i32 %17 to i64
  %21 = getelementptr inbounds [493824 x %struct.Node], ptr @tree, i64 0, i64 %20
  call void @_ZNK4NodeplERKS_(ptr dead_on_unwind nonnull writable sret(%struct.Node) align 4 %5, ptr noundef nonnull align 4 dereferenceable(28) %19, ptr noundef nonnull align 4 dereferenceable(28) %21)
  %22 = sext i32 %2 to i64
  %23 = getelementptr inbounds [493824 x %struct.Node], ptr @tree, i64 0, i64 %22
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 4 dereferenceable(28) %23, ptr noundef nonnull align 4 dereferenceable(28) %5, i64 28, i1 false), !tbaa.struct !9
  call void @llvm.lifetime.end.p0(i64 28, ptr nonnull %5) #4
  br label %common.ret20
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNK4NodeplERKS_(ptr dead_on_unwind noalias writable sret(%struct.Node) align 4, ptr noundef nonnull align 4 dereferenceable(28), ptr noundef nonnull align 4 dereferenceable(28)) local_unnamed_addr #3 align 2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 #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 = !{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}


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