; LLVM IR from AlgoGenesis/C :: Miscellaneous Algorithms/Heavy-light decomposition (Program)

; 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"

@segmentTree = external dso_local global [400020 x i32], 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: nounwind uwtable
define dso_local void @updateSegmentTree(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3, i32 noundef %4) #1 {
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  store i32 %0, ptr %6, align 4, !tbaa !5
  store i32 %1, ptr %7, align 4, !tbaa !5
  store i32 %2, ptr %8, align 4, !tbaa !5
  store i32 %3, ptr %9, align 4, !tbaa !5
  store i32 %4, ptr %10, align 4, !tbaa !5
  %12 = load i32, ptr %7, align 4, !tbaa !5
  %13 = load i32, ptr %8, align 4, !tbaa !5
  %14 = icmp eq i32 %12, %13
  br i1 %14, label %15, label %20

15:                                               ; preds = %5
  %16 = load i32, ptr %10, align 4, !tbaa !5
  %17 = load i32, ptr %6, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds [400020 x i32], ptr @segmentTree, i64 0, i64 %18
  store i32 %16, ptr %19, align 4, !tbaa !5
  br label %60

20:                                               ; preds = %5
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #2
  %21 = load i32, ptr %7, align 4, !tbaa !5
  %22 = load i32, ptr %8, align 4, !tbaa !5
  %23 = add nsw i32 %21, %22
  %24 = sdiv i32 %23, 2
  store i32 %24, ptr %11, align 4, !tbaa !5
  %25 = load i32, ptr %9, align 4, !tbaa !5
  %26 = load i32, ptr %11, align 4, !tbaa !5
  %27 = icmp sle i32 %25, %26
  br i1 %27, label %28, label %35

28:                                               ; preds = %20
  %29 = load i32, ptr %6, align 4, !tbaa !5
  %30 = mul nsw i32 2, %29
  %31 = load i32, ptr %7, align 4, !tbaa !5
  %32 = load i32, ptr %11, align 4, !tbaa !5
  %33 = load i32, ptr %9, align 4, !tbaa !5
  %34 = load i32, ptr %10, align 4, !tbaa !5
  call void @updateSegmentTree(i32 noundef %30, i32 noundef %31, i32 noundef %32, i32 noundef %33, i32 noundef %34)
  br label %44

35:                                               ; preds = %20
  %36 = load i32, ptr %6, align 4, !tbaa !5
  %37 = mul nsw i32 2, %36
  %38 = add nsw i32 %37, 1
  %39 = load i32, ptr %11, align 4, !tbaa !5
  %40 = add nsw i32 %39, 1
  %41 = load i32, ptr %8, align 4, !tbaa !5
  %42 = load i32, ptr %9, align 4, !tbaa !5
  %43 = load i32, ptr %10, align 4, !tbaa !5
  call void @updateSegmentTree(i32 noundef %38, i32 noundef %40, i32 noundef %41, i32 noundef %42, i32 noundef %43)
  br label %44

44:                                               ; preds = %35, %28
  %45 = load i32, ptr %6, align 4, !tbaa !5
  %46 = mul nsw i32 2, %45
  %47 = sext i32 %46 to i64
  %48 = getelementptr inbounds [400020 x i32], ptr @segmentTree, i64 0, i64 %47
  %49 = load i32, ptr %48, align 4, !tbaa !5
  %50 = load i32, ptr %6, align 4, !tbaa !5
  %51 = mul nsw i32 2, %50
  %52 = add nsw i32 %51, 1
  %53 = sext i32 %52 to i64
  %54 = getelementptr inbounds [400020 x i32], ptr @segmentTree, i64 0, i64 %53
  %55 = load i32, ptr %54, align 4, !tbaa !5
  %56 = add nsw i32 %49, %55
  %57 = load i32, ptr %6, align 4, !tbaa !5
  %58 = sext i32 %57 to i64
  %59 = getelementptr inbounds [400020 x i32], ptr @segmentTree, i64 0, i64 %58
  store i32 %56, ptr %59, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #2
  br label %60

60:                                               ; preds = %44, %15
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { 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/C++ TBAA"}


; 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"

@segmentTree = external dso_local local_unnamed_addr global [400020 x i32], align 16

; Function Attrs: nofree nosync nounwind memory(readwrite, argmem: none, inaccessiblemem: none) uwtable
define dso_local void @updateSegmentTree(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3, i32 noundef %4) local_unnamed_addr #0 {
  %6 = icmp eq i32 %1, %2
  br i1 %6, label %23, label %7

7:                                                ; preds = %5
  %8 = add nsw i32 %2, %1
  %9 = sdiv i32 %8, 2
  %.not = icmp slt i32 %9, %3
  %10 = shl nsw i32 %0, 1
  br i1 %.not, label %12, label %11

11:                                               ; preds = %7
  tail call void @updateSegmentTree(i32 noundef %10, i32 noundef %1, i32 noundef %9, i32 noundef %3, i32 noundef %4)
  %.pre = or disjoint i32 %10, 1
  br label %15

12:                                               ; preds = %7
  %13 = or disjoint i32 %10, 1
  %14 = add nsw i32 %9, 1
  tail call void @updateSegmentTree(i32 noundef %13, i32 noundef %14, i32 noundef %2, i32 noundef %3, i32 noundef %4)
  br label %15

15:                                               ; preds = %12, %11
  %.pre-phi25 = phi i32 [ %13, %12 ], [ %.pre, %11 ]
  %16 = sext i32 %10 to i64
  %17 = getelementptr inbounds [400020 x i32], ptr @segmentTree, i64 0, i64 %16
  %18 = load i32, ptr %17, align 8, !tbaa !5
  %19 = sext i32 %.pre-phi25 to i64
  %20 = getelementptr inbounds [400020 x i32], ptr @segmentTree, i64 0, i64 %19
  %21 = load i32, ptr %20, align 4, !tbaa !5
  %22 = add nsw i32 %21, %18
  br label %23

23:                                               ; preds = %5, %15
  %.sink = phi i32 [ %22, %15 ], [ %4, %5 ]
  %24 = sext i32 %0 to i64
  %25 = getelementptr inbounds [400020 x i32], ptr @segmentTree, i64 0, i64 %24
  store i32 %.sink, ptr %25, align 4, !tbaa !5
  ret void
}

attributes #0 = { nofree nosync nounwind memory(readwrite, 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/C++ TBAA"}


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