; LLVM IR from Izaron/ACM-ICPC :: Timus Online Judge/Volume 1/1073. Square Country.ll (Z3defx)

; 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"

@mass = external dso_local global [60005 x i64], align 16

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z3defx(i64 noundef %0) #0 {
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  store i64 %0, ptr %3, align 8, !tbaa !5
  %7 = load i64, ptr %3, align 8, !tbaa !5
  %8 = getelementptr inbounds [60005 x i64], ptr @mass, i64 0, i64 %7
  %9 = load i64, ptr %8, align 8, !tbaa !5
  %10 = icmp ne i64 %9, -1
  br i1 %10, label %11, label %15

11:                                               ; preds = %1
  %12 = load i64, ptr %3, align 8, !tbaa !5
  %13 = getelementptr inbounds [60005 x i64], ptr @mass, i64 0, i64 %12
  %14 = load i64, ptr %13, align 8, !tbaa !5
  store i64 %14, ptr %2, align 8
  br label %55

15:                                               ; preds = %1
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  store i64 -1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  store i64 1, ptr %5, align 8, !tbaa !5
  br label %16

16:                                               ; preds = %45, %15
  %17 = load i64, ptr %5, align 8, !tbaa !5
  %18 = sitofp i64 %17 to double
  %19 = load i64, ptr %3, align 8, !tbaa !5
  %20 = call noundef double @_ZSt4sqrtIxEN9__gnu_cxx11__enable_ifIXsr12__is_integerIT_EE7__valueEdE6__typeES2_(i64 noundef %19)
  %21 = fcmp ole double %18, %20
  br i1 %21, label %23, label %22

22:                                               ; preds = %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  br label %48

23:                                               ; preds = %16
  %24 = load i64, ptr %4, align 8, !tbaa !5
  %25 = icmp eq i64 %24, -1
  br i1 %25, label %26, label %34

26:                                               ; preds = %23
  %27 = load i64, ptr %3, align 8, !tbaa !5
  %28 = load i64, ptr %5, align 8, !tbaa !5
  %29 = load i64, ptr %5, align 8, !tbaa !5
  %30 = mul nsw i64 %28, %29
  %31 = sub nsw i64 %27, %30
  %32 = call noundef i64 @_Z3defx(i64 noundef %31)
  %33 = add nsw i64 1, %32
  store i64 %33, ptr %4, align 8, !tbaa !5
  br label %44

34:                                               ; preds = %23
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %35 = load i64, ptr %3, align 8, !tbaa !5
  %36 = load i64, ptr %5, align 8, !tbaa !5
  %37 = load i64, ptr %5, align 8, !tbaa !5
  %38 = mul nsw i64 %36, %37
  %39 = sub nsw i64 %35, %38
  %40 = call noundef i64 @_Z3defx(i64 noundef %39)
  %41 = add nsw i64 1, %40
  store i64 %41, ptr %6, align 8, !tbaa !5
  %42 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3minIxERKT_S2_S2_(ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 8 dereferenceable(8) %6)
  %43 = load i64, ptr %42, align 8, !tbaa !5
  store i64 %43, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %44

44:                                               ; preds = %34, %26
  br label %45

45:                                               ; preds = %44
  %46 = load i64, ptr %5, align 8, !tbaa !5
  %47 = add nsw i64 %46, 1
  store i64 %47, ptr %5, align 8, !tbaa !5
  br label %16, !llvm.loop !9

48:                                               ; preds = %22
  %49 = load i64, ptr %4, align 8, !tbaa !5
  %50 = load i64, ptr %3, align 8, !tbaa !5
  %51 = getelementptr inbounds [60005 x i64], ptr @mass, i64 0, i64 %50
  store i64 %49, ptr %51, align 8, !tbaa !5
  %52 = load i64, ptr %3, align 8, !tbaa !5
  %53 = getelementptr inbounds [60005 x i64], ptr @mass, i64 0, i64 %52
  %54 = load i64, ptr %53, align 8, !tbaa !5
  store i64 %54, ptr %2, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  br label %55

55:                                               ; preds = %48, %11
  %56 = load i64, ptr %2, align 8
  ret i64 %56
}

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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef double @_ZSt4sqrtIxEN9__gnu_cxx11__enable_ifIXsr12__is_integerIT_EE7__valueEdE6__typeES2_(i64 noundef) #2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3minIxERKT_S2_S2_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #2

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

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { inlinehint 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 = { 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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; 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"

@mass = external dso_local local_unnamed_addr global [60005 x i64], align 16

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i64 @_Z3defx(i64 noundef %0) local_unnamed_addr #0 {
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = getelementptr inbounds [60005 x i64], ptr @mass, i64 0, i64 %0
  %5 = load i64, ptr %4, align 8, !tbaa !5
  %.not = icmp eq i64 %5, -1
  br i1 %.not, label %6, label %29

6:                                                ; preds = %1
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  store i64 -1, ptr %2, align 8, !tbaa !5
  %7 = tail call noundef double @_ZSt4sqrtIxEN9__gnu_cxx11__enable_ifIXsr12__is_integerIT_EE7__valueEdE6__typeES2_(i64 noundef %0)
  %8 = fcmp ult double %7, 1.000000e+00
  br i1 %8, label %._crit_edge, label %.lr.ph

._crit_edge.loopexit:                             ; preds = %24
  %.pre = load i64, ptr %2, align 8, !tbaa !5
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %6
  %9 = phi i64 [ %.pre, %._crit_edge.loopexit ], [ -1, %6 ]
  store i64 %9, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  br label %29

.lr.ph:                                           ; preds = %6, %24
  %.016 = phi i64 [ %25, %24 ], [ 1, %6 ]
  %10 = load i64, ptr %2, align 8, !tbaa !5
  %11 = icmp eq i64 %10, -1
  br i1 %11, label %12, label %17

12:                                               ; preds = %.lr.ph
  %13 = mul nuw nsw i64 %.016, %.016
  %14 = sub nsw i64 %0, %13
  %15 = call noundef i64 @_Z3defx(i64 noundef %14)
  %16 = add nsw i64 %15, 1
  br label %24

17:                                               ; preds = %.lr.ph
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %18 = mul nuw nsw i64 %.016, %.016
  %19 = sub nsw i64 %0, %18
  %20 = call noundef i64 @_Z3defx(i64 noundef %19)
  %21 = add nsw i64 %20, 1
  store i64 %21, ptr %3, align 8, !tbaa !5
  %22 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3minIxERKT_S2_S2_(ptr noundef nonnull align 8 dereferenceable(8) %2, ptr noundef nonnull align 8 dereferenceable(8) %3)
  %23 = load i64, ptr %22, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  br label %24

24:                                               ; preds = %12, %17
  %.sink = phi i64 [ %16, %12 ], [ %23, %17 ]
  store i64 %.sink, ptr %2, align 8
  %25 = add nuw nsw i64 %.016, 1
  %26 = uitofp nneg i64 %25 to double
  %27 = call noundef double @_ZSt4sqrtIxEN9__gnu_cxx11__enable_ifIXsr12__is_integerIT_EE7__valueEdE6__typeES2_(i64 noundef %0)
  %28 = fcmp ult double %27, %26
  br i1 %28, label %._crit_edge.loopexit, label %.lr.ph, !llvm.loop !9

29:                                               ; preds = %1, %._crit_edge
  %.014 = phi i64 [ %9, %._crit_edge ], [ %5, %1 ]
  ret i64 %.014
}

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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef double @_ZSt4sqrtIxEN9__gnu_cxx11__enable_ifIXsr12__is_integerIT_EE7__valueEdE6__typeES2_(i64 noundef) local_unnamed_addr #2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3minIxERKT_S2_S2_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2

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

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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { inlinehint 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 = { 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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,MergedLoadStoreMotionPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass