; LLVM IR from viveakrt/Competitive-programing :: SPOJ/qtree3.ll (Z6updateiiiii)

; 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 { i32 }

@tree = external dso_local global [400004 x %struct.node], 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: mustprogress uwtable
define dso_local void @_Z6updateiiiii(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
  %12 = alloca %struct.node, 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
  %13 = load i32, ptr %9, align 4, !tbaa !5
  %14 = load i32, ptr %6, align 4, !tbaa !5
  %15 = icmp slt i32 %13, %14
  br i1 %15, label %20, label %16

16:                                               ; preds = %5
  %17 = load i32, ptr %9, align 4, !tbaa !5
  %18 = load i32, ptr %7, align 4, !tbaa !5
  %19 = icmp sgt i32 %17, %18
  br i1 %19, label %20, label %21

20:                                               ; preds = %16, %5
  br label %70

21:                                               ; preds = %16
  %22 = load i32, ptr %6, align 4, !tbaa !5
  %23 = load i32, ptr %7, align 4, !tbaa !5
  %24 = icmp eq i32 %22, %23
  br i1 %24, label %25, label %37

25:                                               ; preds = %21
  %26 = load i32, ptr %10, align 4, !tbaa !5
  %27 = load i32, ptr %8, align 4, !tbaa !5
  %28 = sext i32 %27 to i64
  %29 = getelementptr inbounds [400004 x %struct.node], ptr @tree, i64 0, i64 %28
  %30 = getelementptr inbounds %struct.node, ptr %29, i32 0, i32 0
  %31 = load i32, ptr %30, align 4, !tbaa !9
  %32 = sub nsw i32 %26, %31
  %33 = load i32, ptr %8, align 4, !tbaa !5
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds [400004 x %struct.node], ptr @tree, i64 0, i64 %34
  %36 = getelementptr inbounds %struct.node, ptr %35, i32 0, i32 0
  store i32 %32, ptr %36, align 4, !tbaa !9
  br label %70

37:                                               ; preds = %21
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #4
  %38 = load i32, ptr %6, align 4, !tbaa !5
  %39 = load i32, ptr %7, align 4, !tbaa !5
  %40 = add nsw i32 %38, %39
  %41 = sdiv i32 %40, 2
  store i32 %41, ptr %11, align 4, !tbaa !5
  %42 = load i32, ptr %6, align 4, !tbaa !5
  %43 = load i32, ptr %11, align 4, !tbaa !5
  %44 = load i32, ptr %8, align 4, !tbaa !5
  %45 = mul nsw i32 %44, 2
  %46 = load i32, ptr %9, align 4, !tbaa !5
  %47 = load i32, ptr %10, align 4, !tbaa !5
  call void @_Z6updateiiiii(i32 noundef %42, i32 noundef %43, i32 noundef %45, i32 noundef %46, i32 noundef %47)
  %48 = load i32, ptr %11, align 4, !tbaa !5
  %49 = add nsw i32 %48, 1
  %50 = load i32, ptr %7, align 4, !tbaa !5
  %51 = load i32, ptr %8, align 4, !tbaa !5
  %52 = mul nsw i32 %51, 2
  %53 = add nsw i32 %52, 1
  %54 = load i32, ptr %9, align 4, !tbaa !5
  %55 = load i32, ptr %10, align 4, !tbaa !5
  call void @_Z6updateiiiii(i32 noundef %49, i32 noundef %50, i32 noundef %53, i32 noundef %54, i32 noundef %55)
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #4
  %56 = load i32, ptr %8, align 4, !tbaa !5
  %57 = mul nsw i32 %56, 2
  %58 = sext i32 %57 to i64
  %59 = getelementptr inbounds [400004 x %struct.node], ptr @tree, i64 0, i64 %58
  %60 = load i32, ptr %8, align 4, !tbaa !5
  %61 = mul nsw i32 %60, 2
  %62 = add nsw i32 %61, 1
  %63 = sext i32 %62 to i64
  %64 = getelementptr inbounds [400004 x %struct.node], ptr @tree, i64 0, i64 %63
  %65 = call i32 @_ZplRK4nodeS1_(ptr noundef nonnull align 4 dereferenceable(4) %59, ptr noundef nonnull align 4 dereferenceable(4) %64)
  %66 = getelementptr inbounds %struct.node, ptr %12, i32 0, i32 0
  store i32 %65, ptr %66, align 4
  %67 = load i32, ptr %8, align 4, !tbaa !5
  %68 = sext i32 %67 to i64
  %69 = getelementptr inbounds [400004 x %struct.node], ptr @tree, i64 0, i64 %68
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %69, ptr align 4 %12, i64 4, i1 false), !tbaa.struct !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #4
  br label %70

70:                                               ; preds = %37, %25, %20
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local i32 @_ZplRK4nodeS1_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #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) #3

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { 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, !6, i64 0}
!10 = !{!"_ZTS4node", !6, i64 0}
!11 = !{i64 0, i64 4, !5}


; 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 { i32 }

@tree = external dso_local global [400004 x %struct.node], align 16

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z6updateiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3, i32 noundef %4) local_unnamed_addr #0 {
  %6 = icmp slt i32 %3, %0
  %7 = icmp sgt i32 %3, %1
  %or.cond = or i1 %6, %7
  br i1 %or.cond, label %common.ret26, label %8

8:                                                ; preds = %5
  %9 = icmp eq i32 %0, %1
  br i1 %9, label %10, label %15

10:                                               ; preds = %8
  %11 = sext i32 %2 to i64
  %12 = getelementptr inbounds [400004 x %struct.node], ptr @tree, i64 0, i64 %11
  %13 = load i32, ptr %12, align 4, !tbaa !5
  %14 = sub nsw i32 %4, %13
  store i32 %14, ptr %12, align 4, !tbaa !5
  br label %common.ret26

common.ret26:                                     ; preds = %5, %10, %15
  ret void

15:                                               ; preds = %8
  %16 = add nsw i32 %1, %0
  %17 = sdiv i32 %16, 2
  %18 = shl nsw i32 %2, 1
  tail call void @_Z6updateiiiii(i32 noundef %0, i32 noundef %17, i32 noundef %18, i32 noundef %3, i32 noundef %4)
  %19 = add nsw i32 %17, 1
  %20 = or disjoint i32 %18, 1
  tail call void @_Z6updateiiiii(i32 noundef %19, i32 noundef %1, i32 noundef %20, i32 noundef %3, i32 noundef %4)
  %21 = sext i32 %18 to i64
  %22 = getelementptr inbounds [400004 x %struct.node], ptr @tree, i64 0, i64 %21
  %23 = sext i32 %20 to i64
  %24 = getelementptr inbounds [400004 x %struct.node], ptr @tree, i64 0, i64 %23
  %25 = tail call i32 @_ZplRK4nodeS1_(ptr noundef nonnull align 4 dereferenceable(4) %22, ptr noundef nonnull align 4 dereferenceable(4) %24)
  %26 = sext i32 %2 to i64
  %27 = getelementptr inbounds [400004 x %struct.node], ptr @tree, i64 0, i64 %26
  store i32 %25, ptr %27, align 4, !tbaa !10
  br label %common.ret26
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local i32 @_ZplRK4nodeS1_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #0

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" }

!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, !7, i64 0}
!6 = !{!"_ZTS4node", !7, i64 0}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!7, !7, i64 0}


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