; LLVM IR from tangjz/acm-icpc :: luogu (1045)

; 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.Big_int = type { i32, [1000 x i32] }

@ans = external dso_local global %struct.Big_int, align 4
@tmp = external dso_local global %struct.Big_int, align 4
@p = external dso_local global i32, align 4
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1

; 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 %struct.Big_int, align 4
  %5 = alloca %struct.Big_int, align 4
  %6 = alloca %struct.Big_int, align 4
  %7 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @p)
  %9 = call double @log10(double noundef 2.000000e+00) #6
  %10 = load i32, ptr @p, align 4, !tbaa !5
  %11 = sitofp i32 %10 to double
  %12 = fmul double %9, %11
  %13 = fptosi double %12 to i32
  %14 = add nsw i32 %13, 1
  %15 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %14)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #6
  store i32 1, ptr %2, align 4, !tbaa !5
  call void @_ZN7Big_int4initERKi(ptr noundef nonnull align 4 dereferenceable(4004) @ans, ptr noundef nonnull align 4 dereferenceable(4) %2)
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #6
  store i32 2, ptr %3, align 4, !tbaa !5
  call void @_ZN7Big_int4initERKi(ptr noundef nonnull align 4 dereferenceable(4004) @tmp, ptr noundef nonnull align 4 dereferenceable(4) %3)
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #6
  br label %16

16:                                               ; preds = %24, %0
  %17 = load i32, ptr @p, align 4, !tbaa !5
  %18 = icmp ne i32 %17, 0
  br i1 %18, label %19, label %27

19:                                               ; preds = %16
  %20 = load i32, ptr @p, align 4, !tbaa !5
  %21 = and i32 %20, 1
  %22 = icmp ne i32 %21, 0
  br i1 %22, label %23, label %24

23:                                               ; preds = %19
  call void @llvm.lifetime.start.p0(i64 4004, ptr %4) #6
  call void @_ZN7Big_intmLERKS_(ptr dead_on_unwind writable sret(%struct.Big_int) align 4 %4, ptr noundef nonnull align 4 dereferenceable(4004) @ans, ptr noundef nonnull align 4 dereferenceable(4004) @tmp)
  call void @llvm.lifetime.end.p0(i64 4004, ptr %4) #6
  br label %24

24:                                               ; preds = %23, %19
  call void @llvm.lifetime.start.p0(i64 4004, ptr %5) #6
  call void @_ZN7Big_intmLERKS_(ptr dead_on_unwind writable sret(%struct.Big_int) align 4 %5, ptr noundef nonnull align 4 dereferenceable(4004) @tmp, ptr noundef nonnull align 4 dereferenceable(4004) @tmp)
  call void @llvm.lifetime.end.p0(i64 4004, ptr %5) #6
  %25 = load i32, ptr @p, align 4, !tbaa !5
  %26 = ashr i32 %25, 1
  store i32 %26, ptr @p, align 4, !tbaa !5
  br label %16, !llvm.loop !9

27:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 4004, ptr %6) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #6
  store i32 1, ptr %7, align 4, !tbaa !5
  call void @_ZN7Big_intmIERKi(ptr dead_on_unwind writable sret(%struct.Big_int) align 4 %6, ptr noundef nonnull align 4 dereferenceable(4004) @ans, ptr noundef nonnull align 4 dereferenceable(4) %7)
  call void @_ZN7Big_int5PrintEv(ptr noundef nonnull align 4 dereferenceable(4004) %6)
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #6
  call void @llvm.lifetime.end.p0(i64 4004, ptr %6) #6
  %28 = load i32, ptr %1, align 4
  ret i32 %28
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #1

declare i32 @printf(ptr noundef, ...) #1

; Function Attrs: nounwind
declare double @log10(double noundef) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN7Big_int4initERKi(ptr noundef nonnull align 4 dereferenceable(4004), ptr noundef nonnull align 4 dereferenceable(4)) #3 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #4

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #4

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7Big_intmLERKS_(ptr dead_on_unwind noalias writable sret(%struct.Big_int) align 4, ptr noundef nonnull align 4 dereferenceable(4004), ptr noundef nonnull align 4 dereferenceable(4004)) #5 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN7Big_intmIERKi(ptr dead_on_unwind noalias writable sret(%struct.Big_int) align 4, ptr noundef nonnull align 4 dereferenceable(4004), ptr noundef nonnull align 4 dereferenceable(4)) #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7Big_int5PrintEv(ptr noundef nonnull align 4 dereferenceable(4004)) #5 align 2

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 = { 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 #3 = { 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 #4 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #5 = { 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 #6 = { 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"}


; 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.Big_int = type { i32, [1000 x i32] }

@ans = external dso_local global %struct.Big_int, align 4
@tmp = external dso_local global %struct.Big_int, align 4
@p = external dso_local global i32, align 4
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1

; 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 = alloca %struct.Big_int, align 4
  %4 = alloca %struct.Big_int, align 4
  %5 = alloca %struct.Big_int, align 4
  %6 = alloca i32, align 4
  %7 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @p)
  %8 = load i32, ptr @p, align 4, !tbaa !5
  %9 = sitofp i32 %8 to double
  %10 = fmul double %9, 0x3FD34413509F79FF
  %11 = fptosi double %10 to i32
  %12 = add nsw i32 %11, 1
  %13 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %12)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #5
  store i32 1, ptr %1, align 4, !tbaa !5
  call void @_ZN7Big_int4initERKi(ptr noundef nonnull align 4 dereferenceable(4004) @ans, ptr noundef nonnull align 4 dereferenceable(4) %1)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #5
  store i32 2, ptr %2, align 4, !tbaa !5
  call void @_ZN7Big_int4initERKi(ptr noundef nonnull align 4 dereferenceable(4004) @tmp, ptr noundef nonnull align 4 dereferenceable(4) %2)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #5
  %.pr = load i32, ptr @p, align 4, !tbaa !5
  %.not2 = icmp eq i32 %.pr, 0
  br i1 %.not2, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %0, %17
  %14 = phi i32 [ %19, %17 ], [ %.pr, %0 ]
  %15 = and i32 %14, 1
  %.not1 = icmp eq i32 %15, 0
  br i1 %.not1, label %17, label %16

16:                                               ; preds = %.lr.ph
  call void @llvm.lifetime.start.p0(i64 4004, ptr nonnull %3) #5
  call void @_ZN7Big_intmLERKS_(ptr dead_on_unwind nonnull writable sret(%struct.Big_int) align 4 %3, ptr noundef nonnull align 4 dereferenceable(4004) @ans, ptr noundef nonnull align 4 dereferenceable(4004) @tmp)
  call void @llvm.lifetime.end.p0(i64 4004, ptr nonnull %3) #5
  br label %17

17:                                               ; preds = %16, %.lr.ph
  call void @llvm.lifetime.start.p0(i64 4004, ptr nonnull %4) #5
  call void @_ZN7Big_intmLERKS_(ptr dead_on_unwind nonnull writable sret(%struct.Big_int) align 4 %4, ptr noundef nonnull align 4 dereferenceable(4004) @tmp, ptr noundef nonnull align 4 dereferenceable(4004) @tmp)
  call void @llvm.lifetime.end.p0(i64 4004, ptr nonnull %4) #5
  %18 = load i32, ptr @p, align 4, !tbaa !5
  %19 = ashr i32 %18, 1
  store i32 %19, ptr @p, align 4, !tbaa !5
  %.not = icmp ult i32 %18, 2
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge:                                      ; preds = %17, %0
  call void @llvm.lifetime.start.p0(i64 4004, ptr nonnull %5) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %6) #5
  store i32 1, ptr %6, align 4, !tbaa !5
  call void @_ZN7Big_intmIERKi(ptr dead_on_unwind nonnull writable sret(%struct.Big_int) align 4 %5, ptr noundef nonnull align 4 dereferenceable(4004) @ans, ptr noundef nonnull align 4 dereferenceable(4) %6)
  call void @_ZN7Big_int5PrintEv(ptr noundef nonnull align 4 dereferenceable(4004) %5)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #5
  call void @llvm.lifetime.end.p0(i64 4004, ptr nonnull %5) #5
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN7Big_int4initERKi(ptr noundef nonnull align 4 dereferenceable(4004), ptr noundef nonnull align 4 dereferenceable(4)) 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

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7Big_intmLERKS_(ptr dead_on_unwind noalias writable sret(%struct.Big_int) align 4, ptr noundef nonnull align 4 dereferenceable(4004), ptr noundef nonnull align 4 dereferenceable(4004)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN7Big_intmIERKi(ptr dead_on_unwind noalias writable sret(%struct.Big_int) align 4, ptr noundef nonnull align 4 dereferenceable(4004), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7Big_int5PrintEv(ptr noundef nonnull align 4 dereferenceable(4004)) local_unnamed_addr #4 align 2

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 = { 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 #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 = { 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 #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"}


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