; LLVM IR from xirc/cp-algorithm :: atcoder/abc144/E/main.ll (Z4passl)

; 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 }

@N = external dso_local global i32, align 4
@K = external dso_local global i64, align 8
@A = external dso_local global %"class.std::vector", align 8
@F = external dso_local global %"class.std::vector", align 8

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_Z4passl(i64 noundef %0) #0 {
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i32, align 4
  %5 = alloca i64, align 8
  store i64 %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #2
  store i64 0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  store i32 0, ptr %4, align 4, !tbaa !9
  br label %6

6:                                                ; preds = %43, %1
  %7 = load i32, ptr %4, align 4, !tbaa !9
  %8 = load i32, ptr @N, align 4, !tbaa !9
  %9 = icmp slt i32 %7, %8
  br i1 %9, label %11, label %10

10:                                               ; preds = %6
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  br label %46

11:                                               ; preds = %6
  %12 = load i32, ptr %4, align 4, !tbaa !9
  %13 = sext i32 %12 to i64
  %14 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @A, i64 noundef %13) #2
  %15 = load i32, ptr %14, align 4, !tbaa !9
  %16 = sext i32 %15 to i64
  %17 = load i32, ptr %4, align 4, !tbaa !9
  %18 = sext i32 %17 to i64
  %19 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @F, i64 noundef %18) #2
  %20 = load i32, ptr %19, align 4, !tbaa !9
  %21 = sext i32 %20 to i64
  %22 = mul nsw i64 %16, %21
  %23 = load i64, ptr %2, align 8, !tbaa !5
  %24 = icmp sle i64 %22, %23
  br i1 %24, label %25, label %26

25:                                               ; preds = %11
  br label %43

26:                                               ; preds = %11
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  %27 = load i32, ptr %4, align 4, !tbaa !9
  %28 = sext i32 %27 to i64
  %29 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @A, i64 noundef %28) #2
  %30 = load i32, ptr %29, align 4, !tbaa !9
  %31 = sext i32 %30 to i64
  %32 = load i64, ptr %2, align 8, !tbaa !5
  %33 = load i32, ptr %4, align 4, !tbaa !9
  %34 = sext i32 %33 to i64
  %35 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @F, i64 noundef %34) #2
  %36 = load i32, ptr %35, align 4, !tbaa !9
  %37 = sext i32 %36 to i64
  %38 = sdiv i64 %32, %37
  %39 = sub nsw i64 %31, %38
  store i64 %39, ptr %5, align 8, !tbaa !5
  %40 = load i64, ptr %5, align 8, !tbaa !5
  %41 = load i64, ptr %3, align 8, !tbaa !5
  %42 = add nsw i64 %41, %40
  store i64 %42, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  br label %43

43:                                               ; preds = %26, %25
  %44 = load i32, ptr %4, align 4, !tbaa !9
  %45 = add nsw i32 %44, 1
  store i32 %45, ptr %4, align 4, !tbaa !9
  br label %6, !llvm.loop !11

46:                                               ; preds = %10
  %47 = load i64, ptr %3, align 8, !tbaa !5
  %48 = load i64, ptr @K, align 8, !tbaa !5
  %49 = icmp sle i64 %47, %48
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #2
  ret i1 %49
}

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #0 align 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 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 = { 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", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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"

%"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 }

@N = external dso_local local_unnamed_addr global i32, align 4
@K = external dso_local local_unnamed_addr global i64, align 8
@A = external dso_local global %"class.std::vector", align 8
@F = external dso_local global %"class.std::vector", align 8

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_Z4passl(i64 noundef %0) local_unnamed_addr #0 {
  %2 = load i32, ptr @N, align 4, !tbaa !5
  %3 = icmp sgt i32 %2, 0
  br i1 %3, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %23, %1
  %.0.lcssa = phi i64 [ 0, %1 ], [ %.1, %23 ]
  %4 = load i64, ptr @K, align 8, !tbaa !9
  %5 = icmp sle i64 %.0.lcssa, %4
  ret i1 %5

.lr.ph:                                           ; preds = %1, %23
  %indvars.iv = phi i64 [ %indvars.iv.next, %23 ], [ 0, %1 ]
  %.014 = phi i64 [ %.1, %23 ], [ 0, %1 ]
  %6 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @A, i64 noundef %indvars.iv) #1
  %7 = load i32, ptr %6, align 4, !tbaa !5
  %8 = sext i32 %7 to i64
  %9 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @F, i64 noundef %indvars.iv) #1
  %10 = load i32, ptr %9, align 4, !tbaa !5
  %11 = sext i32 %10 to i64
  %12 = mul nsw i64 %11, %8
  %.not = icmp sgt i64 %12, %0
  br i1 %.not, label %13, label %23

13:                                               ; preds = %.lr.ph
  %14 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @A, i64 noundef %indvars.iv) #1
  %15 = load i32, ptr %14, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @F, i64 noundef %indvars.iv) #1
  %18 = load i32, ptr %17, align 4, !tbaa !5
  %19 = sext i32 %18 to i64
  %20 = sdiv i64 %0, %19
  %21 = add i64 %.014, %16
  %22 = sub i64 %21, %20
  br label %23

23:                                               ; preds = %.lr.ph, %13
  %.1 = phi i64 [ %.014, %.lr.ph ], [ %22, %13 ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %24 = load i32, ptr @N, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = icmp slt i64 %indvars.iv.next, %25
  br i1 %26, label %.lr.ph, label %._crit_edge, !llvm.loop !11
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

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 = { 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, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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