; LLVM IR from VastoLorde95/Competitive-Programming :: CodeChef/LTIME/LTIME28/Problem A/A.ll (Z5buildiiii)

; 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 { i64 }

@lazy = external dso_local global [5001 x [5001 x i64]], align 16
@tree = external dso_local global [5001 x [10002 x %struct.node]], align 16

; Function Attrs: mustprogress uwtable
define dso_local void @_Z5buildiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) #0 {
  %5 = alloca i32, align 4
  %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 %5, align 4, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !5
  store i32 %2, ptr %7, align 4, !tbaa !5
  store i32 %3, ptr %8, align 4, !tbaa !5
  %12 = load i32, ptr %7, align 4, !tbaa !5
  %13 = add nsw i32 %12, 1
  %14 = load i32, ptr %8, align 4, !tbaa !5
  %15 = icmp eq i32 %13, %14
  br i1 %15, label %16, label %23

16:                                               ; preds = %4
  %17 = load i32, ptr %5, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds [5001 x [10002 x %struct.node]], ptr @tree, i64 0, i64 %18
  %20 = load i32, ptr %6, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [10002 x %struct.node], ptr %19, i64 0, i64 %21
  call void @_ZN4node6assignEx(ptr noundef nonnull align 8 dereferenceable(8) %22, i64 noundef 0)
  br label %64

23:                                               ; preds = %4
  %24 = load i32, ptr %5, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [5001 x [5001 x i64]], ptr @lazy, i64 0, i64 %25
  %27 = load i32, ptr %6, align 4, !tbaa !5
  %28 = sext i32 %27 to i64
  %29 = getelementptr inbounds [5001 x i64], ptr %26, i64 0, i64 %28
  store i64 0, ptr %29, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  %30 = load i32, ptr %6, align 4, !tbaa !5
  %31 = shl i32 %30, 1
  store i32 %31, ptr %9, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  %32 = load i32, ptr %9, align 4, !tbaa !5
  %33 = add nsw i32 %32, 1
  store i32 %33, ptr %10, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #3
  %34 = load i32, ptr %7, align 4, !tbaa !5
  %35 = load i32, ptr %8, align 4, !tbaa !5
  %36 = add nsw i32 %34, %35
  %37 = ashr i32 %36, 1
  store i32 %37, ptr %11, align 4, !tbaa !5
  %38 = load i32, ptr %5, align 4, !tbaa !5
  %39 = load i32, ptr %9, align 4, !tbaa !5
  %40 = load i32, ptr %7, align 4, !tbaa !5
  %41 = load i32, ptr %11, align 4, !tbaa !5
  call void @_Z5buildiiii(i32 noundef %38, i32 noundef %39, i32 noundef %40, i32 noundef %41)
  %42 = load i32, ptr %5, align 4, !tbaa !5
  %43 = load i32, ptr %10, align 4, !tbaa !5
  %44 = load i32, ptr %11, align 4, !tbaa !5
  %45 = load i32, ptr %8, align 4, !tbaa !5
  call void @_Z5buildiiii(i32 noundef %42, i32 noundef %43, i32 noundef %44, i32 noundef %45)
  %46 = load i32, ptr %5, align 4, !tbaa !5
  %47 = sext i32 %46 to i64
  %48 = getelementptr inbounds [5001 x [10002 x %struct.node]], ptr @tree, i64 0, i64 %47
  %49 = load i32, ptr %6, align 4, !tbaa !5
  %50 = sext i32 %49 to i64
  %51 = getelementptr inbounds [10002 x %struct.node], ptr %48, i64 0, i64 %50
  %52 = load i32, ptr %5, align 4, !tbaa !5
  %53 = sext i32 %52 to i64
  %54 = getelementptr inbounds [5001 x [10002 x %struct.node]], ptr @tree, i64 0, i64 %53
  %55 = load i32, ptr %9, align 4, !tbaa !5
  %56 = sext i32 %55 to i64
  %57 = getelementptr inbounds [10002 x %struct.node], ptr %54, i64 0, i64 %56
  %58 = load i32, ptr %5, align 4, !tbaa !5
  %59 = sext i32 %58 to i64
  %60 = getelementptr inbounds [5001 x [10002 x %struct.node]], ptr @tree, i64 0, i64 %59
  %61 = load i32, ptr %10, align 4, !tbaa !5
  %62 = sext i32 %61 to i64
  %63 = getelementptr inbounds [10002 x %struct.node], ptr %60, i64 0, i64 %62
  call void @_ZN4node7combineERS_S0_(ptr noundef nonnull align 8 dereferenceable(8) %51, ptr noundef nonnull align 8 dereferenceable(8) %57, ptr noundef nonnull align 8 dereferenceable(8) %63)
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  br label %64

64:                                               ; preds = %23, %16
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN4node6assignEx(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) #1 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN4node7combineERS_S0_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #0 align 2

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

%struct.node = type { i64 }

@lazy = external dso_local local_unnamed_addr global [5001 x [5001 x i64]], align 16
@tree = external dso_local global [5001 x [10002 x %struct.node]], align 16

; Function Attrs: mustprogress uwtable
define dso_local void @_Z5buildiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #0 {
  %5 = add nsw i32 %2, 1
  %6 = icmp eq i32 %5, %3
  %7 = sext i32 %0 to i64
  %8 = sext i32 %1 to i64
  br i1 %6, label %common.ret, label %10

common.ret:                                       ; preds = %4
  %9 = getelementptr inbounds [5001 x [10002 x %struct.node]], ptr @tree, i64 0, i64 %7, i64 %8
  tail call void @_ZN4node6assignEx(ptr noundef nonnull align 8 dereferenceable(8) %9, i64 noundef 0)
  br label %common.ret24

common.ret24:                                     ; preds = %10, %common.ret
  ret void

10:                                               ; preds = %4
  %11 = getelementptr inbounds [5001 x [5001 x i64]], ptr @lazy, i64 0, i64 %7, i64 %8
  store i64 0, ptr %11, align 8, !tbaa !5
  %12 = shl i32 %1, 1
  %13 = or disjoint i32 %12, 1
  %14 = add nsw i32 %3, %2
  %15 = ashr i32 %14, 1
  tail call void @_Z5buildiiii(i32 noundef %0, i32 noundef %12, i32 noundef %2, i32 noundef %15)
  tail call void @_Z5buildiiii(i32 noundef %0, i32 noundef %13, i32 noundef %15, i32 noundef %3)
  %16 = getelementptr inbounds [5001 x [10002 x %struct.node]], ptr @tree, i64 0, i64 %7, i64 %8
  %17 = sext i32 %12 to i64
  %18 = getelementptr inbounds [5001 x [10002 x %struct.node]], ptr @tree, i64 0, i64 %7, i64 %17
  %19 = sext i32 %13 to i64
  %20 = getelementptr inbounds [5001 x [10002 x %struct.node]], ptr @tree, i64 0, i64 %7, i64 %19
  tail call void @_ZN4node7combineERS_S0_(ptr noundef nonnull align 8 dereferenceable(8) %16, ptr noundef nonnull align 8 dereferenceable(8) %18, ptr noundef nonnull align 8 dereferenceable(8) %20)
  br label %common.ret24
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN4node6assignEx(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN4node7combineERS_S0_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_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 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,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass