; LLVM IR from upupming/algorithm :: AdvancedLevel_C++/1103. Integer Factorization (30)  (main)

; 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 i32, align 4
@p = external dso_local global i32, align 4
@maxFacSum = external dso_local global i32, align 4
@v = external dso_local global %"class.std::vector", align 8
@ans = external dso_local global %"class.std::vector", align 8
@tempAns = external dso_local global %"class.std::vector", align 8
@.str = external hidden unnamed_addr constant [7 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z4initv() #0

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

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z3dfsiiii(i32 noundef, i32 noundef, i32 noundef, i32 noundef) #0

; 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) #2 align 2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #3 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %3 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @n, ptr noundef @k, ptr noundef @p)
  call void @_Z4initv()
  %4 = load i32, ptr @k, align 4, !tbaa !5
  %5 = sext i32 %4 to i64
  call void @_ZNSt6vectorIiSaIiEE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24) @tempAns, i64 noundef %5)
  %6 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) @v) #5
  %7 = sub i64 %6, 1
  %8 = trunc i64 %7 to i32
  call void @_Z3dfsiiii(i32 noundef %8, i32 noundef 0, i32 noundef 0, i32 noundef 0)
  %9 = load i32, ptr @maxFacSum, align 4, !tbaa !5
  %10 = icmp eq i32 %9, -1
  br i1 %10, label %11, label %13

11:                                               ; preds = %0
  %12 = call i32 (ptr, ...) @printf(ptr noundef @.str.4)
  store i32 0, ptr %1, align 4
  br label %38

13:                                               ; preds = %0
  %14 = load i32, ptr @n, align 4, !tbaa !5
  %15 = call i32 (ptr, ...) @printf(ptr noundef @.str.5, i32 noundef %14)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #5
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %16

16:                                               ; preds = %34, %13
  %17 = load i32, ptr %2, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) @ans) #5
  %20 = icmp ult i64 %18, %19
  br i1 %20, label %22, label %21

21:                                               ; preds = %16
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  br label %37

22:                                               ; preds = %16
  %23 = load i32, ptr %2, align 4, !tbaa !5
  %24 = icmp ne i32 %23, 0
  br i1 %24, label %25, label %27

25:                                               ; preds = %22
  %26 = call i32 (ptr, ...) @printf(ptr noundef @.str.6)
  br label %27

27:                                               ; preds = %25, %22
  %28 = load i32, ptr %2, align 4, !tbaa !5
  %29 = sext i32 %28 to i64
  %30 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @ans, i64 noundef %29) #5
  %31 = load i32, ptr %30, align 4, !tbaa !5
  %32 = load i32, ptr @p, align 4, !tbaa !5
  %33 = call i32 (ptr, ...) @printf(ptr noundef @.str.7, i32 noundef %31, i32 noundef %32)
  br label %34

34:                                               ; preds = %27
  %35 = load i32, ptr %2, align 4, !tbaa !5
  %36 = add nsw i32 %35, 1
  store i32 %36, ptr %2, align 4, !tbaa !5
  br label %16, !llvm.loop !9

37:                                               ; preds = %21
  store i32 0, ptr %1, align 4
  br label %38

38:                                               ; preds = %37, %11
  %39 = load i32, ptr %1, align 4
  ret i32 %39
}

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

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

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 = { 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"}


; 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 global i32, align 4
@k = external dso_local global i32, align 4
@p = external dso_local global i32, align 4
@maxFacSum = external dso_local local_unnamed_addr global i32, align 4
@v = external dso_local global %"class.std::vector", align 8
@ans = external dso_local global %"class.std::vector", align 8
@tempAns = external dso_local global %"class.std::vector", align 8
@.str = external hidden unnamed_addr constant [7 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z4initv() local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z3dfsiiii(i32 noundef, i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; 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 #1 align 2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #2 {
  %1 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n, ptr noundef nonnull @k, ptr noundef nonnull @p)
  tail call void @_Z4initv()
  %2 = load i32, ptr @k, align 4, !tbaa !5
  %3 = sext i32 %2 to i64
  tail call void @_ZNSt6vectorIiSaIiEE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24) @tempAns, i64 noundef %3)
  %4 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) @v) #4
  %5 = trunc i64 %4 to i32
  %6 = add i32 %5, -1
  tail call void @_Z3dfsiiii(i32 noundef %6, i32 noundef 0, i32 noundef 0, i32 noundef 0)
  %7 = load i32, ptr @maxFacSum, align 4, !tbaa !5
  %8 = icmp eq i32 %7, -1
  br i1 %8, label %9, label %11

9:                                                ; preds = %0
  %10 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4)
  br label %.loopexit

11:                                               ; preds = %0
  %12 = load i32, ptr @n, align 4, !tbaa !5
  %13 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.5, i32 noundef %12)
  %14 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) @ans) #4
  %.not8 = icmp eq i64 %14, 0
  br i1 %.not8, label %.loopexit, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %11
  %15 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @ans, i64 noundef 0) #4
  %16 = load i32, ptr %15, align 4, !tbaa !5
  %17 = load i32, ptr @p, align 4, !tbaa !5
  %18 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.7, i32 noundef %16, i32 noundef %17)
  %19 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) @ans) #4
  %20 = icmp ugt i64 %19, 1
  br i1 %20, label %.lr.ph.peel.next, label %.loopexit

.lr.ph.peel.next:                                 ; preds = %.lr.ph.preheader, %.lr.ph.peel.next
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph.peel.next ], [ 1, %.lr.ph.preheader ]
  %21 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.6)
  %22 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @ans, i64 noundef %indvars.iv) #4
  %23 = load i32, ptr %22, align 4, !tbaa !5
  %24 = load i32, ptr @p, align 4, !tbaa !5
  %25 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.7, i32 noundef %23, i32 noundef %24)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %26 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) @ans) #4
  %27 = icmp ugt i64 %26, %indvars.iv.next
  br i1 %27, label %.lr.ph.peel.next, label %.loopexit, !llvm.loop !9

.loopexit:                                        ; preds = %.lr.ph.peel.next, %.lr.ph.preheader, %11, %9
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

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 = { 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 #2 = { 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 #3 = { 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 #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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10, !11}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!"llvm.loop.peeled.count", i32 1}


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