; LLVM IR from ravireddy07/cpp-book :: src/Code-Chef/MAR2021-Long (RWALKS)

; 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"

%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@v = external dso_local global [200005 x %"class.std::vector"], align 16
@.str = external hidden unnamed_addr constant [5 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [4 x i8], align 1

; 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
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z13makeCentroidsii(i32 noundef, i32 noundef) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z6updateii(i32 noundef, i32 noundef) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z5queryi(i32 noundef) #2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #3 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %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
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #5
  %11 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2, ptr noundef %3)
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #5
  store i32 1, ptr %9, align 4, !tbaa !5
  br label %12

12:                                               ; preds = %25, %0
  %13 = load i32, ptr %9, align 4, !tbaa !5
  %14 = load i32, ptr %2, align 4, !tbaa !5
  %15 = icmp slt i32 %13, %14
  br i1 %15, label %17, label %16

16:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #5
  br label %28

17:                                               ; preds = %12
  %18 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %4, ptr noundef %5)
  %19 = load i32, ptr %4, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds [200005 x %"class.std::vector"], ptr @v, i64 0, i64 %20
  call void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %21, ptr noundef nonnull align 4 dereferenceable(4) %5)
  %22 = load i32, ptr %5, align 4, !tbaa !5
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds [200005 x %"class.std::vector"], ptr @v, i64 0, i64 %23
  call void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %24, ptr noundef nonnull align 4 dereferenceable(4) %4)
  br label %25

25:                                               ; preds = %17
  %26 = load i32, ptr %9, align 4, !tbaa !5
  %27 = add nsw i32 %26, 1
  store i32 %27, ptr %9, align 4, !tbaa !5
  br label %12, !llvm.loop !9

28:                                               ; preds = %16
  call void @_Z13makeCentroidsii(i32 noundef 1, i32 noundef 0)
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #5
  store i32 0, ptr %10, align 4, !tbaa !5
  br label %29

29:                                               ; preds = %64, %28
  %30 = load i32, ptr %3, align 4, !tbaa !5
  %31 = add nsw i32 %30, -1
  store i32 %31, ptr %3, align 4, !tbaa !5
  %32 = icmp ne i32 %30, 0
  br i1 %32, label %33, label %65

33:                                               ; preds = %29
  %34 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %8, ptr noundef %6)
  %35 = load i32, ptr %8, align 4, !tbaa !5
  %36 = icmp eq i32 %35, 1
  br i1 %36, label %37, label %53

37:                                               ; preds = %33
  %38 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.8, ptr noundef %7)
  %39 = load i32, ptr %10, align 4, !tbaa !5
  %40 = load i32, ptr %6, align 4, !tbaa !5
  %41 = add nsw i32 %39, %40
  %42 = load i32, ptr %2, align 4, !tbaa !5
  %43 = srem i32 %41, %42
  %44 = add nsw i32 %43, 1
  store i32 %44, ptr %4, align 4, !tbaa !5
  %45 = load i32, ptr %10, align 4, !tbaa !5
  %46 = load i32, ptr %7, align 4, !tbaa !5
  %47 = add nsw i32 %45, %46
  %48 = load i32, ptr %2, align 4, !tbaa !5
  %49 = srem i32 %47, %48
  %50 = add nsw i32 %49, 1
  store i32 %50, ptr %5, align 4, !tbaa !5
  %51 = load i32, ptr %4, align 4, !tbaa !5
  %52 = load i32, ptr %5, align 4, !tbaa !5
  call void @_Z6updateii(i32 noundef %51, i32 noundef %52)
  br label %64

53:                                               ; preds = %33
  %54 = load i32, ptr %10, align 4, !tbaa !5
  %55 = load i32, ptr %6, align 4, !tbaa !5
  %56 = add nsw i32 %54, %55
  %57 = load i32, ptr %2, align 4, !tbaa !5
  %58 = srem i32 %56, %57
  %59 = add nsw i32 %58, 1
  store i32 %59, ptr %4, align 4, !tbaa !5
  %60 = load i32, ptr %4, align 4, !tbaa !5
  %61 = call noundef i32 @_Z5queryi(i32 noundef %60)
  store i32 %61, ptr %10, align 4, !tbaa !5
  %62 = load i32, ptr %10, align 4, !tbaa !5
  %63 = call i32 (ptr, ...) @printf(ptr noundef @.str.9, i32 noundef %62)
  br label %64

64:                                               ; preds = %53, %37
  br label %29, !llvm.loop !11

65:                                               ; preds = %29
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  ret i32 0
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #4

declare i32 @printf(ptr noundef, ...) #4

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 = { mustprogress norecurse 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 #4 = { "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 #5 = { 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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; 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"

%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@v = external dso_local global [200005 x %"class.std::vector"], align 16
@.str = external hidden unnamed_addr constant [5 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [4 x i8], align 1

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

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z13makeCentroidsii(i32 noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z6updateii(i32 noundef, i32 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z5queryi(i32 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #3 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %6) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %7) #5
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2)
  %9 = load i32, ptr %1, align 4, !tbaa !5
  %10 = icmp sgt i32 %9, 1
  br i1 %10, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %0
  call void @_Z13makeCentroidsii(i32 noundef 1, i32 noundef 0)
  %11 = load i32, ptr %2, align 4, !tbaa !5
  %12 = add nsw i32 %11, -1
  store i32 %12, ptr %2, align 4, !tbaa !5
  %.not8 = icmp eq i32 %11, 0
  br i1 %.not8, label %._crit_edge12, label %.lr.ph11

.lr.ph:                                           ; preds = %0, %.lr.ph
  %.067 = phi i32 [ %20, %.lr.ph ], [ 1, %0 ]
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %3, ptr noundef nonnull %4)
  %14 = load i32, ptr %3, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds [200005 x %"class.std::vector"], ptr @v, i64 0, i64 %15
  call void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %16, ptr noundef nonnull align 4 dereferenceable(4) %4)
  %17 = load i32, ptr %4, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds [200005 x %"class.std::vector"], ptr @v, i64 0, i64 %18
  call void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %19, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %20 = add nuw nsw i32 %.067, 1
  %21 = load i32, ptr %1, align 4, !tbaa !5
  %22 = icmp slt i32 %20, %21
  br i1 %22, label %.lr.ph, label %._crit_edge, !llvm.loop !9

.lr.ph11:                                         ; preds = %._crit_edge, %45
  %.09 = phi i32 [ %.1, %45 ], [ 0, %._crit_edge ]
  %23 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %7, ptr noundef nonnull %5)
  %24 = load i32, ptr %7, align 4, !tbaa !5
  %25 = icmp eq i32 %24, 1
  br i1 %25, label %26, label %37

26:                                               ; preds = %.lr.ph11
  %27 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.8, ptr noundef nonnull %6)
  %28 = load i32, ptr %5, align 4, !tbaa !5
  %29 = add nsw i32 %28, %.09
  %30 = load i32, ptr %1, align 4, !tbaa !5
  %31 = srem i32 %29, %30
  %32 = add nsw i32 %31, 1
  store i32 %32, ptr %3, align 4, !tbaa !5
  %33 = load i32, ptr %6, align 4, !tbaa !5
  %34 = add nsw i32 %33, %.09
  %35 = srem i32 %34, %30
  %36 = add nsw i32 %35, 1
  store i32 %36, ptr %4, align 4, !tbaa !5
  call void @_Z6updateii(i32 noundef %32, i32 noundef %36)
  br label %45

37:                                               ; preds = %.lr.ph11
  %38 = load i32, ptr %5, align 4, !tbaa !5
  %39 = add nsw i32 %38, %.09
  %40 = load i32, ptr %1, align 4, !tbaa !5
  %41 = srem i32 %39, %40
  %42 = add nsw i32 %41, 1
  store i32 %42, ptr %3, align 4, !tbaa !5
  %43 = call noundef i32 @_Z5queryi(i32 noundef %42)
  %44 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.9, i32 noundef %43)
  br label %45

45:                                               ; preds = %37, %26
  %.1 = phi i32 [ %.09, %26 ], [ %43, %37 ]
  %46 = load i32, ptr %2, align 4, !tbaa !5
  %47 = add nsw i32 %46, -1
  store i32 %47, ptr %2, align 4, !tbaa !5
  %.not = icmp eq i32 %46, 0
  br i1 %.not, label %._crit_edge12, label %.lr.ph11, !llvm.loop !11

._crit_edge12:                                    ; preds = %45, %._crit_edge
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %7) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #5
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #4

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #4

attributes #0 = { mustprogress 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 = { mustprogress norecurse 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 #4 = { nofree nounwind "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 #5 = { 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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass