; LLVM IR from ncduy0303/Competitive-Programming :: Data Structures/Segment Tree/Advanced example 1.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.tdata = type { i64, i64, i64, i64 }

@arr = external dso_local global [200001 x i32], align 16
@st = external dso_local global [800004 x %struct.tdata], 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 %struct.tdata, align 8
  %8 = alloca i32, align 4
  %9 = alloca %struct.tdata, align 8
  %10 = alloca %struct.tdata, align 8
  %11 = alloca %struct.tdata, align 8
  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
  %12 = load i32, ptr %5, align 4, !tbaa !5
  %13 = load i32, ptr %6, align 4, !tbaa !5
  %14 = icmp eq i32 %12, %13
  br i1 %14, label %15, label %23

15:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 32, ptr %7) #3
  %16 = load i32, ptr %5, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [200001 x i32], ptr @arr, i64 0, i64 %17
  %19 = load i32, ptr %18, align 4, !tbaa !5
  call void @_ZN5tdataC2Ei(ptr noundef nonnull align 8 dereferenceable(32) %7, i32 noundef %19)
  %20 = load i32, ptr %4, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [800004 x %struct.tdata], ptr @st, i64 0, i64 %21
  call void @llvm.memcpy.p0.p0.i64(ptr align 16 %22, ptr align 8 %7, i64 32, i1 false), !tbaa.struct !9
  call void @llvm.lifetime.end.p0(i64 32, ptr %7) #3
  br label %50

23:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  %24 = load i32, ptr %5, align 4, !tbaa !5
  %25 = load i32, ptr %6, align 4, !tbaa !5
  %26 = add nsw i32 %24, %25
  %27 = sdiv i32 %26, 2
  store i32 %27, ptr %8, align 4, !tbaa !5
  %28 = load i32, ptr %4, align 4, !tbaa !5
  %29 = mul nsw i32 2, %28
  %30 = load i32, ptr %5, align 4, !tbaa !5
  %31 = load i32, ptr %8, 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, 1
  %35 = load i32, ptr %8, 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)
  call void @llvm.lifetime.start.p0(i64 32, ptr %9) #3
  %38 = load i32, ptr %4, align 4, !tbaa !5
  %39 = mul nsw i32 2, %38
  %40 = sext i32 %39 to i64
  %41 = getelementptr inbounds [800004 x %struct.tdata], ptr @st, i64 0, i64 %40
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %10, ptr align 16 %41, i64 32, i1 false), !tbaa.struct !9
  %42 = load i32, ptr %4, align 4, !tbaa !5
  %43 = mul nsw i32 2, %42
  %44 = add nsw i32 %43, 1
  %45 = sext i32 %44 to i64
  %46 = getelementptr inbounds [800004 x %struct.tdata], ptr @st, i64 0, i64 %45
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %11, ptr align 16 %46, i64 32, i1 false), !tbaa.struct !9
  call void @_ZN5tdataC2ES_S_(ptr noundef nonnull align 8 dereferenceable(32) %9, ptr noundef byval(%struct.tdata) align 8 %10, ptr noundef byval(%struct.tdata) align 8 %11)
  %47 = load i32, ptr %4, align 4, !tbaa !5
  %48 = sext i32 %47 to i64
  %49 = getelementptr inbounds [800004 x %struct.tdata], ptr @st, i64 0, i64 %48
  call void @llvm.memcpy.p0.p0.i64(ptr align 16 %49, ptr align 8 %9, i64 32, i1 false), !tbaa.struct !9
  call void @llvm.lifetime.end.p0(i64 32, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  br label %50

50:                                               ; preds = %23, %15
  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: mustprogress uwtable
declare dso_local void @_ZN5tdataC2Ei(ptr noundef nonnull align 8 dereferenceable(32), i32 noundef) unnamed_addr #0 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) #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN5tdataC2ES_S_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef byval(%struct.tdata) align 8, ptr noundef byval(%struct.tdata) align 8) unnamed_addr #0 align 2

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 = { 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 = !{i64 0, i64 8, !10, i64 8, i64 8, !10, i64 16, i64 8, !10, i64 24, i64 8, !10}
!10 = !{!11, !11, i64 0}
!11 = !{!"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"

%struct.tdata = type { i64, i64, i64, i64 }

@arr = external dso_local local_unnamed_addr global [200001 x i32], align 16
@st = external dso_local local_unnamed_addr global [800004 x %struct.tdata], align 16

; Function Attrs: mustprogress uwtable
define dso_local void @_Z5buildiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = alloca %struct.tdata, align 8
  %5 = alloca %struct.tdata, align 8
  %6 = icmp eq i32 %1, %2
  br i1 %6, label %common.ret, label %12

common.ret:                                       ; preds = %3
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %4) #3
  %7 = sext i32 %1 to i64
  %8 = getelementptr inbounds [200001 x i32], ptr @arr, i64 0, i64 %7
  %9 = load i32, ptr %8, align 4, !tbaa !5
  call void @_ZN5tdataC2Ei(ptr noundef nonnull align 8 dereferenceable(32) %4, i32 noundef %9)
  %10 = sext i32 %0 to i64
  %11 = getelementptr inbounds [800004 x %struct.tdata], ptr @st, i64 0, i64 %10
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 16 dereferenceable(32) %11, ptr noundef nonnull align 8 dereferenceable(32) %4, i64 32, i1 false), !tbaa.struct !9
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #3
  br label %common.ret16

common.ret16:                                     ; preds = %12, %common.ret
  ret void

12:                                               ; preds = %3
  %13 = add nsw i32 %2, %1
  %14 = sdiv i32 %13, 2
  %15 = shl nsw i32 %0, 1
  tail call void @_Z5buildiii(i32 noundef %15, i32 noundef %1, i32 noundef %14)
  %16 = or disjoint i32 %15, 1
  %17 = add nsw i32 %14, 1
  tail call void @_Z5buildiii(i32 noundef %16, i32 noundef %17, i32 noundef %2)
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %5) #3
  %18 = sext i32 %15 to i64
  %19 = getelementptr inbounds [800004 x %struct.tdata], ptr @st, i64 0, i64 %18
  %20 = sext i32 %16 to i64
  %21 = getelementptr inbounds [800004 x %struct.tdata], ptr @st, i64 0, i64 %20
  call void @_ZN5tdataC2ES_S_(ptr noundef nonnull align 8 dereferenceable(32) %5, ptr noundef nonnull byval(%struct.tdata) align 8 %19, ptr noundef nonnull byval(%struct.tdata) align 8 %21)
  %22 = sext i32 %0 to i64
  %23 = getelementptr inbounds [800004 x %struct.tdata], ptr @st, i64 0, i64 %22
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 16 dereferenceable(32) %23, ptr noundef nonnull align 8 dereferenceable(32) %5, i64 32, i1 false), !tbaa.struct !9
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %5) #3
  br label %common.ret16
}

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN5tdataC2Ei(ptr noundef nonnull align 8 dereferenceable(32), i32 noundef) unnamed_addr #0 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) #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN5tdataC2ES_S_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef byval(%struct.tdata) align 8, ptr noundef byval(%struct.tdata) align 8) unnamed_addr #0 align 2

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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress 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 = !{i64 0, i64 8, !10, i64 8, i64 8, !10, i64 16, i64 8, !10, i64 24, i64 8, !10}
!10 = !{!11, !11, i64 0}
!11 = !{!"long long", !7, i64 0}


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