; LLVM IR from ahampriyanshu/algo-ds-101 :: Data-Structures/Tree/Segment-Tree (Segment-Tree)

; 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"

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

; Function Attrs: nounwind uwtable
define dso_local i32 @build(ptr noundef %0, ptr noundef %1, i32 noundef %2, i32 noundef %3, i32 noundef %4) #1 {
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  store ptr %0, ptr %7, align 8, !tbaa !5
  store ptr %1, ptr %8, align 8, !tbaa !5
  store i32 %2, ptr %9, align 4, !tbaa !9
  store i32 %3, ptr %10, align 4, !tbaa !9
  store i32 %4, ptr %11, align 4, !tbaa !9
  %14 = load i32, ptr %9, align 4, !tbaa !9
  %15 = load i32, ptr %10, align 4, !tbaa !9
  %16 = sub nsw i32 %15, 1
  %17 = icmp eq i32 %14, %16
  br i1 %17, label %18, label %28

18:                                               ; preds = %5
  %19 = load ptr, ptr %7, align 8, !tbaa !5
  %20 = load i32, ptr %9, align 4, !tbaa !9
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds i32, ptr %19, i64 %21
  %23 = load i32, ptr %22, align 4, !tbaa !9
  %24 = load ptr, ptr %8, align 8, !tbaa !5
  %25 = load i32, ptr %11, align 4, !tbaa !9
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds i32, ptr %24, i64 %26
  store i32 %23, ptr %27, align 4, !tbaa !9
  store i32 %23, ptr %6, align 4
  br label %55

28:                                               ; preds = %5
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #2
  %29 = load i32, ptr %9, align 4, !tbaa !9
  %30 = load i32, ptr %10, align 4, !tbaa !9
  %31 = add nsw i32 %29, %30
  %32 = sdiv i32 %31, 2
  store i32 %32, ptr %12, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #2
  %33 = load ptr, ptr %7, align 8, !tbaa !5
  %34 = load ptr, ptr %8, align 8, !tbaa !5
  %35 = load i32, ptr %9, align 4, !tbaa !9
  %36 = load i32, ptr %12, align 4, !tbaa !9
  %37 = load i32, ptr %11, align 4, !tbaa !9
  %38 = mul nsw i32 %37, 2
  %39 = add nsw i32 %38, 1
  %40 = call i32 @build(ptr noundef %33, ptr noundef %34, i32 noundef %35, i32 noundef %36, i32 noundef %39)
  %41 = load ptr, ptr %7, align 8, !tbaa !5
  %42 = load ptr, ptr %8, align 8, !tbaa !5
  %43 = load i32, ptr %12, align 4, !tbaa !9
  %44 = load i32, ptr %10, align 4, !tbaa !9
  %45 = load i32, ptr %11, align 4, !tbaa !9
  %46 = mul nsw i32 %45, 2
  %47 = add nsw i32 %46, 2
  %48 = call i32 @build(ptr noundef %41, ptr noundef %42, i32 noundef %43, i32 noundef %44, i32 noundef %47)
  %49 = add nsw i32 %40, %48
  store i32 %49, ptr %13, align 4, !tbaa !9
  %50 = load i32, ptr %13, align 4, !tbaa !9
  %51 = load ptr, ptr %8, align 8, !tbaa !5
  %52 = load i32, ptr %11, align 4, !tbaa !9
  %53 = sext i32 %52 to i64
  %54 = getelementptr inbounds i32, ptr %51, i64 %53
  store i32 %50, ptr %54, align 4, !tbaa !9
  store i32 %50, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #2
  br label %55

55:                                               ; preds = %28, %18
  %56 = load i32, ptr %6, align 4
  ret i32 %56
}

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

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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !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"

; Function Attrs: nofree nosync nounwind memory(argmem: readwrite) uwtable
define dso_local i32 @build(ptr noundef %0, ptr noundef %1, i32 noundef %2, i32 noundef %3, i32 noundef %4) local_unnamed_addr #0 {
  %6 = add nsw i32 %3, -1
  %7 = icmp eq i32 %6, %2
  br i1 %7, label %8, label %14

8:                                                ; preds = %5
  %9 = sext i32 %2 to i64
  %10 = getelementptr inbounds i32, ptr %0, i64 %9
  %11 = load i32, ptr %10, align 4, !tbaa !5
  br label %common.ret

common.ret:                                       ; preds = %8, %14
  %.sink = phi i32 [ %11, %8 ], [ %22, %14 ]
  %12 = sext i32 %4 to i64
  %13 = getelementptr inbounds i32, ptr %1, i64 %12
  store i32 %.sink, ptr %13, align 4, !tbaa !5
  ret i32 %.sink

14:                                               ; preds = %5
  %15 = add nsw i32 %3, %2
  %16 = sdiv i32 %15, 2
  %17 = shl nsw i32 %4, 1
  %18 = or disjoint i32 %17, 1
  %19 = tail call i32 @build(ptr noundef %0, ptr noundef %1, i32 noundef %2, i32 noundef %16, i32 noundef %18)
  %20 = add nsw i32 %17, 2
  %21 = tail call i32 @build(ptr noundef %0, ptr noundef %1, i32 noundef %16, i32 noundef %3, i32 noundef %20)
  %22 = add nsw i32 %21, %19
  br label %common.ret
}

attributes #0 = { nofree nosync nounwind memory(argmem: readwrite) 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,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass