; LLVM IR from Tunghohin/Competitive_Coding :: Daimayuan/654.ll (Z6modifyiii)

; 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, i32, i32, i32 }

@tr = external dso_local global [800040 x %struct.Node], align 16

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z7push_upR4NodeS0_S0_(ptr noundef nonnull align 4 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(16)) #0

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

; 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
define dso_local void @_Z6modifyiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) #2 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  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
  %8 = load i32, ptr %4, align 4, !tbaa !5
  %9 = sext i32 %8 to i64
  %10 = getelementptr inbounds [800040 x %struct.Node], ptr @tr, i64 0, i64 %9
  %11 = getelementptr inbounds %struct.Node, ptr %10, i32 0, i32 0
  %12 = load i32, ptr %11, align 16, !tbaa !9
  %13 = load i32, ptr %5, align 4, !tbaa !5
  %14 = icmp eq i32 %12, %13
  br i1 %14, label %15, label %33

15:                                               ; preds = %3
  %16 = load i32, ptr %4, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [800040 x %struct.Node], ptr @tr, i64 0, i64 %17
  %19 = getelementptr inbounds %struct.Node, ptr %18, i32 0, i32 1
  %20 = load i32, ptr %19, align 4, !tbaa !11
  %21 = load i32, ptr %5, align 4, !tbaa !5
  %22 = icmp eq i32 %20, %21
  br i1 %22, label %23, label %33

23:                                               ; preds = %15
  %24 = load i32, ptr %6, align 4, !tbaa !5
  %25 = load i32, ptr %4, align 4, !tbaa !5
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds [800040 x %struct.Node], ptr @tr, i64 0, i64 %26
  %28 = getelementptr inbounds %struct.Node, ptr %27, i32 0, i32 2
  store i32 %24, ptr %28, align 8, !tbaa !12
  %29 = load i32, ptr %4, align 4, !tbaa !5
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds [800040 x %struct.Node], ptr @tr, i64 0, i64 %30
  %32 = getelementptr inbounds %struct.Node, ptr %31, i32 0, i32 3
  store i32 1, ptr %32, align 4, !tbaa !13
  br label %73

33:                                               ; preds = %15, %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  %34 = load i32, ptr %4, align 4, !tbaa !5
  %35 = sext i32 %34 to i64
  %36 = getelementptr inbounds [800040 x %struct.Node], ptr @tr, i64 0, i64 %35
  %37 = getelementptr inbounds %struct.Node, ptr %36, i32 0, i32 0
  %38 = load i32, ptr %37, align 16, !tbaa !9
  %39 = load i32, ptr %4, align 4, !tbaa !5
  %40 = sext i32 %39 to i64
  %41 = getelementptr inbounds [800040 x %struct.Node], ptr @tr, i64 0, i64 %40
  %42 = getelementptr inbounds %struct.Node, ptr %41, i32 0, i32 1
  %43 = load i32, ptr %42, align 4, !tbaa !11
  %44 = add nsw i32 %38, %43
  %45 = ashr i32 %44, 1
  store i32 %45, ptr %7, align 4, !tbaa !5
  %46 = load i32, ptr %5, align 4, !tbaa !5
  %47 = load i32, ptr %7, align 4, !tbaa !5
  %48 = icmp sle i32 %46, %47
  br i1 %48, label %49, label %54

49:                                               ; preds = %33
  %50 = load i32, ptr %4, align 4, !tbaa !5
  %51 = shl i32 %50, 1
  %52 = load i32, ptr %5, align 4, !tbaa !5
  %53 = load i32, ptr %6, align 4, !tbaa !5
  call void @_Z6modifyiii(i32 noundef %51, i32 noundef %52, i32 noundef %53)
  br label %60

54:                                               ; preds = %33
  %55 = load i32, ptr %4, align 4, !tbaa !5
  %56 = shl i32 %55, 1
  %57 = or i32 %56, 1
  %58 = load i32, ptr %5, align 4, !tbaa !5
  %59 = load i32, ptr %6, align 4, !tbaa !5
  call void @_Z6modifyiii(i32 noundef %57, i32 noundef %58, i32 noundef %59)
  br label %60

60:                                               ; preds = %54, %49
  %61 = load i32, ptr %4, align 4, !tbaa !5
  %62 = sext i32 %61 to i64
  %63 = getelementptr inbounds [800040 x %struct.Node], ptr @tr, i64 0, i64 %62
  %64 = load i32, ptr %4, align 4, !tbaa !5
  %65 = shl i32 %64, 1
  %66 = sext i32 %65 to i64
  %67 = getelementptr inbounds [800040 x %struct.Node], ptr @tr, i64 0, i64 %66
  %68 = load i32, ptr %4, align 4, !tbaa !5
  %69 = shl i32 %68, 1
  %70 = or i32 %69, 1
  %71 = sext i32 %70 to i64
  %72 = getelementptr inbounds [800040 x %struct.Node], ptr @tr, i64 0, i64 %71
  call void @_Z7push_upR4NodeS0_S0_(ptr noundef nonnull align 4 dereferenceable(16) %63, ptr noundef nonnull align 4 dereferenceable(16) %67, ptr noundef nonnull align 4 dereferenceable(16) %72)
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %73

73:                                               ; preds = %60, %23
  ret void
}

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" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #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, !6, i64 0}
!10 = !{!"_ZTS4Node", !6, i64 0, !6, i64 4, !6, i64 8, !6, i64 12}
!11 = !{!10, !6, i64 4}
!12 = !{!10, !6, i64 8}
!13 = !{!10, !6, i64 12}


; 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, i32, i32, i32 }

@tr = external dso_local global [800040 x %struct.Node], align 16

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z7push_upR4NodeS0_S0_(ptr noundef nonnull align 4 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(16)) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z6modifyiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = sext i32 %0 to i64
  %5 = getelementptr inbounds [800040 x %struct.Node], ptr @tr, i64 0, i64 %4
  %6 = load i32, ptr %5, align 16, !tbaa !5
  %7 = icmp eq i32 %6, %1
  %8 = getelementptr inbounds i8, ptr %5, i64 4
  %9 = load i32, ptr %8, align 4, !tbaa !10
  %10 = icmp eq i32 %9, %1
  %or.cond = select i1 %7, i1 %10, i1 false
  br i1 %or.cond, label %11, label %._crit_edge

11:                                               ; preds = %3
  %12 = getelementptr inbounds i8, ptr %5, i64 8
  store i32 %2, ptr %12, align 8, !tbaa !11
  %13 = getelementptr inbounds i8, ptr %5, i64 12
  store i32 1, ptr %13, align 4, !tbaa !12
  br label %25

._crit_edge:                                      ; preds = %3
  %14 = add nsw i32 %9, %6
  %15 = ashr i32 %14, 1
  %.not = icmp slt i32 %15, %1
  %16 = shl i32 %0, 1
  br i1 %.not, label %18, label %17

17:                                               ; preds = %._crit_edge
  tail call void @_Z6modifyiii(i32 noundef %16, i32 noundef %1, i32 noundef %2)
  %.pre20 = or disjoint i32 %16, 1
  br label %20

18:                                               ; preds = %._crit_edge
  %19 = or disjoint i32 %16, 1
  tail call void @_Z6modifyiii(i32 noundef %19, i32 noundef %1, i32 noundef %2)
  br label %20

20:                                               ; preds = %18, %17
  %.pre-phi21 = phi i32 [ %19, %18 ], [ %.pre20, %17 ]
  %21 = sext i32 %16 to i64
  %22 = getelementptr inbounds [800040 x %struct.Node], ptr @tr, i64 0, i64 %21
  %23 = sext i32 %.pre-phi21 to i64
  %24 = getelementptr inbounds [800040 x %struct.Node], ptr @tr, i64 0, i64 %23
  tail call void @_Z7push_upR4NodeS0_S0_(ptr noundef nonnull align 4 dereferenceable(16) %5, ptr noundef nonnull align 4 dereferenceable(16) %22, ptr noundef nonnull align 4 dereferenceable(16) %24)
  br label %25

25:                                               ; preds = %20, %11
  ret void
}

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, i64 4, !7, i64 8, !7, i64 12}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!6, !7, i64 4}
!11 = !{!6, !7, i64 8}
!12 = !{!6, !7, i64 12}


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