; LLVM IR from reyadussalahin/problem-solving :: data_structure/segment_tree/codeforces/F1295E/Solution.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"

@a = external dso_local global [200020 x i64], align 16
@b = external dso_local global [800080 x i64], align 16
@u = external dso_local global [800080 x i64], align 16

; 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 = load i32, ptr %5, align 4, !tbaa !5
  %9 = load i32, ptr %6, align 4, !tbaa !5
  %10 = icmp eq i32 %8, %9
  br i1 %10, label %11, label %22

11:                                               ; preds = %3
  %12 = load i32, ptr %5, align 4, !tbaa !5
  %13 = sext i32 %12 to i64
  %14 = getelementptr inbounds [200020 x i64], ptr @a, i64 0, i64 %13
  %15 = load i64, ptr %14, align 8, !tbaa !9
  %16 = load i32, ptr %4, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [800080 x i64], ptr @b, i64 0, i64 %17
  store i64 %15, ptr %18, align 8, !tbaa !9
  %19 = load i32, ptr %4, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds [800080 x i64], ptr @u, i64 0, i64 %20
  store i64 0, ptr %21, align 8, !tbaa !9
  br label %56

22:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  %23 = load i32, ptr %5, align 4, !tbaa !5
  %24 = load i32, ptr %6, align 4, !tbaa !5
  %25 = add nsw i32 %23, %24
  %26 = sdiv i32 %25, 2
  store i32 %26, ptr %7, align 4, !tbaa !5
  %27 = load i32, ptr %4, align 4, !tbaa !5
  %28 = mul nsw i32 2, %27
  %29 = add nsw i32 %28, 1
  %30 = load i32, ptr %5, align 4, !tbaa !5
  %31 = load i32, ptr %7, align 4, !tbaa !5
  call void @_Z5buildiii(i32 noundef %29, i32 noundef %30, i32 noundef %31)
  %32 = load i32, ptr %4, align 4, !tbaa !5
  %33 = mul nsw i32 2, %32
  %34 = add nsw i32 %33, 2
  %35 = load i32, ptr %7, align 4, !tbaa !5
  %36 = add nsw i32 %35, 1
  %37 = load i32, ptr %6, align 4, !tbaa !5
  call void @_Z5buildiii(i32 noundef %34, i32 noundef %36, i32 noundef %37)
  %38 = load i32, ptr %4, align 4, !tbaa !5
  %39 = mul nsw i32 2, %38
  %40 = add nsw i32 %39, 1
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds [800080 x i64], ptr @b, i64 0, i64 %41
  %43 = load i32, ptr %4, align 4, !tbaa !5
  %44 = mul nsw i32 2, %43
  %45 = add nsw i32 %44, 2
  %46 = sext i32 %45 to i64
  %47 = getelementptr inbounds [800080 x i64], ptr @b, i64 0, i64 %46
  %48 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3minIxERKT_S2_S2_(ptr noundef nonnull align 8 dereferenceable(8) %42, ptr noundef nonnull align 8 dereferenceable(8) %47)
  %49 = load i64, ptr %48, align 8, !tbaa !9
  %50 = load i32, ptr %4, align 4, !tbaa !5
  %51 = sext i32 %50 to i64
  %52 = getelementptr inbounds [800080 x i64], ptr @b, i64 0, i64 %51
  store i64 %49, ptr %52, align 8, !tbaa !9
  %53 = load i32, ptr %4, align 4, !tbaa !5
  %54 = sext i32 %53 to i64
  %55 = getelementptr inbounds [800080 x i64], ptr @u, i64 0, i64 %54
  store i64 0, ptr %55, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %56

56:                                               ; preds = %22, %11
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3minIxERKT_S2_S2_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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, !10, i64 0}
!10 = !{!"long long", !7, i64 0}


; 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"

@a = external dso_local local_unnamed_addr global [200020 x i64], align 16
@b = external dso_local global [800080 x i64], align 16
@u = external dso_local local_unnamed_addr global [800080 x i64], align 16

; 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 %5, label %12

5:                                                ; preds = %3
  %6 = sext i32 %1 to i64
  %7 = getelementptr inbounds [200020 x i64], ptr @a, i64 0, i64 %6
  br label %common.ret

common.ret:                                       ; preds = %5, %12
  %.sink21 = phi ptr [ %7, %5 ], [ %23, %12 ]
  %8 = load i64, ptr %.sink21, align 8, !tbaa !5
  %9 = sext i32 %0 to i64
  %10 = getelementptr inbounds [800080 x i64], ptr @b, i64 0, i64 %9
  store i64 %8, ptr %10, align 8, !tbaa !5
  %11 = getelementptr inbounds [800080 x i64], ptr @u, i64 0, i64 %9
  store i64 0, ptr %11, align 8, !tbaa !5
  ret void

12:                                               ; preds = %3
  %13 = add nsw i32 %2, %1
  %14 = sdiv i32 %13, 2
  %15 = shl nsw i32 %0, 1
  %16 = or disjoint i32 %15, 1
  tail call void @_Z5buildiii(i32 noundef %16, i32 noundef %1, i32 noundef %14)
  %17 = add nsw i32 %15, 2
  %18 = add nsw i32 %14, 1
  tail call void @_Z5buildiii(i32 noundef %17, i32 noundef %18, i32 noundef %2)
  %19 = sext i32 %16 to i64
  %20 = getelementptr inbounds [800080 x i64], ptr @b, i64 0, i64 %19
  %21 = sext i32 %17 to i64
  %22 = getelementptr inbounds [800080 x i64], ptr @b, i64 0, i64 %21
  %23 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3minIxERKT_S2_S2_(ptr noundef nonnull align 8 dereferenceable(8) %20, ptr noundef nonnull align 8 dereferenceable(8) %22)
  br label %common.ret
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3minIxERKT_S2_S2_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) 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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


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