; LLVM IR from plskz/competitive-programming :: Junior Training Sheet/A (177)

; 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::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %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
  store i32 0, ptr %1, align 4
  %8 = call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %9 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %10 = getelementptr i8, ptr %9, i64 -24
  %11 = load i64, ptr %10, align 8
  %12 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %11
  %13 = call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %12, ptr noundef null)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  %14 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %2)
  %15 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %14, ptr noundef nonnull align 4 dereferenceable(4) %3)
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  store i32 0, ptr %4, align 4, !tbaa !8
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  store i32 0, ptr %5, align 4, !tbaa !8
  br label %16

16:                                               ; preds = %50, %0
  %17 = load i32, ptr %5, align 4, !tbaa !8
  %18 = icmp slt i32 %17, 1001
  br i1 %18, label %20, label %19

19:                                               ; preds = %16
  store i32 2, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  br label %53

20:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  store i32 0, ptr %7, align 4, !tbaa !8
  br label %21

21:                                               ; preds = %46, %20
  %22 = load i32, ptr %7, align 4, !tbaa !8
  %23 = icmp slt i32 %22, 1001
  br i1 %23, label %25, label %24

24:                                               ; preds = %21
  store i32 5, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  br label %49

25:                                               ; preds = %21
  %26 = load i32, ptr %5, align 4, !tbaa !8
  %27 = load i32, ptr %5, align 4, !tbaa !8
  %28 = mul nsw i32 %26, %27
  %29 = load i32, ptr %7, align 4, !tbaa !8
  %30 = add nsw i32 %28, %29
  %31 = load i32, ptr %2, align 4, !tbaa !8
  %32 = icmp eq i32 %30, %31
  br i1 %32, label %33, label %41

33:                                               ; preds = %25
  %34 = load i32, ptr %5, align 4, !tbaa !8
  %35 = load i32, ptr %7, align 4, !tbaa !8
  %36 = load i32, ptr %7, align 4, !tbaa !8
  %37 = mul nsw i32 %35, %36
  %38 = add nsw i32 %34, %37
  %39 = load i32, ptr %3, align 4, !tbaa !8
  %40 = icmp eq i32 %38, %39
  br label %41

41:                                               ; preds = %33, %25
  %42 = phi i1 [ false, %25 ], [ %40, %33 ]
  %43 = zext i1 %42 to i32
  %44 = load i32, ptr %4, align 4, !tbaa !8
  %45 = add nsw i32 %44, %43
  store i32 %45, ptr %4, align 4, !tbaa !8
  br label %46

46:                                               ; preds = %41
  %47 = load i32, ptr %7, align 4, !tbaa !8
  %48 = add nsw i32 %47, 1
  store i32 %48, ptr %7, align 4, !tbaa !8
  br label %21, !llvm.loop !11

49:                                               ; preds = %24
  br label %50

50:                                               ; preds = %49
  %51 = load i32, ptr %5, align 4, !tbaa !8
  %52 = add nsw i32 %51, 1
  store i32 %52, ptr %5, align 4, !tbaa !8
  br label %16, !llvm.loop !13

53:                                               ; preds = %19
  %54 = load i32, ptr %4, align 4, !tbaa !8
  %55 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %54)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  %56 = load i32, ptr %1, align 4
  ret i32 %56
}

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) #1

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264), ptr noundef) #2 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #1

attributes #0 = { 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 #1 = { "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 nosync 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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !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"

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = tail call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %4 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %5 = getelementptr i8, ptr %4, i64 -24
  %6 = load i64, ptr %5, align 8
  %7 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %6
  %8 = tail call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %7, ptr noundef null)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #5
  %9 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %1)
  %10 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %9, ptr noundef nonnull align 4 dereferenceable(4) %2)
  %11 = load i32, ptr %1, align 4, !tbaa !8
  %12 = load i32, ptr %2, align 4
  %broadcast.splatinsert22 = insertelement <4 x i32> poison, i32 %11, i64 0
  %broadcast.splat23 = shufflevector <4 x i32> %broadcast.splatinsert22, <4 x i32> poison, <4 x i32> zeroinitializer
  %broadcast.splatinsert26 = insertelement <4 x i32> poison, i32 %12, i64 0
  %broadcast.splat27 = shufflevector <4 x i32> %broadcast.splatinsert26, <4 x i32> poison, <4 x i32> zeroinitializer
  br label %.preheader

.preheader:                                       ; preds = %0, %.loopexit
  %.01318 = phi i32 [ 0, %0 ], [ %42, %.loopexit ]
  %.01417 = phi i32 [ 0, %0 ], [ %41, %.loopexit ]
  %13 = mul nuw nsw i32 %.01318, %.01318
  %14 = insertelement <4 x i32> <i32 poison, i32 0, i32 0, i32 0>, i32 %.01417, i64 0
  %broadcast.splatinsert = insertelement <4 x i32> poison, i32 %13, i64 0
  %broadcast.splat = shufflevector <4 x i32> %broadcast.splatinsert, <4 x i32> poison, <4 x i32> zeroinitializer
  %broadcast.splatinsert24 = insertelement <4 x i32> poison, i32 %.01318, i64 0
  %broadcast.splat25 = shufflevector <4 x i32> %broadcast.splatinsert24, <4 x i32> poison, <4 x i32> zeroinitializer
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %.preheader
  %index = phi i32 [ 0, %.preheader ], [ %index.next, %vector.body ]
  %vec.ind = phi <4 x i32> [ <i32 0, i32 1, i32 2, i32 3>, %.preheader ], [ %vec.ind.next, %vector.body ]
  %vec.phi = phi <4 x i32> [ %14, %.preheader ], [ %29, %vector.body ]
  %vec.phi21 = phi <4 x i32> [ zeroinitializer, %.preheader ], [ %30, %vector.body ]
  %step.add = add <4 x i32> %vec.ind, <i32 4, i32 4, i32 4, i32 4>
  %15 = add nuw nsw <4 x i32> %vec.ind, %broadcast.splat
  %16 = add nuw nsw <4 x i32> %step.add, %broadcast.splat
  %17 = icmp eq <4 x i32> %15, %broadcast.splat23
  %18 = icmp eq <4 x i32> %16, %broadcast.splat23
  %19 = mul nuw nsw <4 x i32> %vec.ind, %vec.ind
  %20 = mul nuw nsw <4 x i32> %step.add, %step.add
  %21 = add nuw nsw <4 x i32> %19, %broadcast.splat25
  %22 = add nuw nsw <4 x i32> %20, %broadcast.splat25
  %23 = icmp eq <4 x i32> %21, %broadcast.splat27
  %24 = icmp eq <4 x i32> %22, %broadcast.splat27
  %25 = select <4 x i1> %17, <4 x i1> %23, <4 x i1> zeroinitializer
  %26 = select <4 x i1> %18, <4 x i1> %24, <4 x i1> zeroinitializer
  %27 = zext <4 x i1> %25 to <4 x i32>
  %28 = zext <4 x i1> %26 to <4 x i32>
  %29 = add <4 x i32> %vec.phi, %27
  %30 = add <4 x i32> %vec.phi21, %28
  %index.next = add nuw i32 %index, 8
  %vec.ind.next = add <4 x i32> %vec.ind, <i32 8, i32 8, i32 8, i32 8>
  %31 = icmp eq i32 %index.next, 1000
  br i1 %31, label %.loopexit, label %vector.body, !llvm.loop !11

32:                                               ; preds = %.loopexit
  %33 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %41)
  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

.loopexit:                                        ; preds = %vector.body
  %bin.rdx = add <4 x i32> %30, %29
  %34 = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> %bin.rdx)
  %35 = add nuw nsw i32 %13, 1000
  %36 = icmp eq i32 %35, %11
  %37 = add nuw nsw i32 %.01318, 1000000
  %38 = icmp eq i32 %37, %12
  %39 = select i1 %36, i1 %38, i1 false
  %40 = zext i1 %39 to i32
  %41 = add nsw i32 %34, %40
  %42 = add nuw nsw i32 %.01318, 1
  %exitcond19.not = icmp eq i32 %42, 1001
  br i1 %exitcond19.not, label %32, label %.preheader, !llvm.loop !15
}

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264), ptr noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #1

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.vector.reduce.add.v4i32(<4 x i32>) #4

attributes #0 = { 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 #1 = { "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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = distinct !{!11, !12, !13, !14}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!"llvm.loop.isvectorized", i32 1}
!14 = !{!"llvm.loop.unroll.runtime.disable"}
!15 = distinct !{!15, !12}


; Effective O3 passes: GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LICMPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass