; LLVM IR from DionysiosB/CodeForces :: 1000-1099 (1003B-BinaryStringConstructing)

; 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"

@.str = external hidden unnamed_addr constant [12 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [1 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca [2 x i64], align 16
  %3 = alloca i64, align 8
  %4 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 16, ptr %2) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %5 = getelementptr inbounds [2 x i64], ptr %2, i64 0, i64 0
  %6 = getelementptr inbounds [2 x i64], ptr %2, i64 0, i64 0
  %7 = getelementptr inbounds i64, ptr %6, i64 1
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %5, ptr noundef %7, ptr noundef %3)
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  %9 = getelementptr inbounds [2 x i64], ptr %2, i64 0, i64 1
  %10 = load i64, ptr %9, align 8, !tbaa !5
  %11 = getelementptr inbounds [2 x i64], ptr %2, i64 0, i64 0
  %12 = load i64, ptr %11, align 16, !tbaa !5
  %13 = icmp sge i64 %10, %12
  %14 = zext i1 %13 to i64
  %15 = select i1 %13, i32 0, i32 1
  store i32 %15, ptr %4, align 4, !tbaa !9
  br label %16

16:                                               ; preds = %19, %0
  %17 = load i64, ptr %3, align 8, !tbaa !5
  %18 = icmp sgt i64 %17, 0
  br i1 %18, label %19, label %31

19:                                               ; preds = %16
  %20 = load i32, ptr %4, align 4, !tbaa !9
  %21 = sub nsw i32 1, %20
  store i32 %21, ptr %4, align 4, !tbaa !9
  %22 = load i32, ptr %4, align 4, !tbaa !9
  %23 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %22)
  %24 = load i64, ptr %3, align 8, !tbaa !5
  %25 = add nsw i64 %24, -1
  store i64 %25, ptr %3, align 8, !tbaa !5
  %26 = load i32, ptr %4, align 4, !tbaa !9
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds [2 x i64], ptr %2, i64 0, i64 %27
  %29 = load i64, ptr %28, align 8, !tbaa !5
  %30 = add nsw i64 %29, -1
  store i64 %30, ptr %28, align 8, !tbaa !5
  br label %16, !llvm.loop !11

31:                                               ; preds = %16
  br label %32

32:                                               ; preds = %38, %31
  %33 = load i32, ptr %4, align 4, !tbaa !9
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds [2 x i64], ptr %2, i64 0, i64 %34
  %36 = load i64, ptr %35, align 8, !tbaa !5
  %37 = icmp ne i64 %36, 0
  br i1 %37, label %38, label %46

38:                                               ; preds = %32
  %39 = load i32, ptr %4, align 4, !tbaa !9
  %40 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %39)
  %41 = load i32, ptr %4, align 4, !tbaa !9
  %42 = sext i32 %41 to i64
  %43 = getelementptr inbounds [2 x i64], ptr %2, i64 0, i64 %42
  %44 = load i64, ptr %43, align 8, !tbaa !5
  %45 = add nsw i64 %44, -1
  store i64 %45, ptr %43, align 8, !tbaa !5
  br label %32, !llvm.loop !13

46:                                               ; preds = %32
  %47 = load i32, ptr %4, align 4, !tbaa !9
  %48 = sub nsw i32 1, %47
  store i32 %48, ptr %4, align 4, !tbaa !9
  br label %49

49:                                               ; preds = %55, %46
  %50 = load i32, ptr %4, align 4, !tbaa !9
  %51 = sext i32 %50 to i64
  %52 = getelementptr inbounds [2 x i64], ptr %2, i64 0, i64 %51
  %53 = load i64, ptr %52, align 8, !tbaa !5
  %54 = icmp ne i64 %53, 0
  br i1 %54, label %55, label %63

55:                                               ; preds = %49
  %56 = load i32, ptr %4, align 4, !tbaa !9
  %57 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %56)
  %58 = load i32, ptr %4, align 4, !tbaa !9
  %59 = sext i32 %58 to i64
  %60 = getelementptr inbounds [2 x i64], ptr %2, i64 0, i64 %59
  %61 = load i64, ptr %60, align 8, !tbaa !5
  %62 = add nsw i64 %61, -1
  store i64 %62, ptr %60, align 8, !tbaa !5
  br label %49, !llvm.loop !14

63:                                               ; preds = %49
  %64 = call i32 @puts(ptr noundef @.str.2)
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 16, ptr %2) #3
  ret i32 0
}

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

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

declare i32 @printf(ptr noundef, ...) #2

declare i32 @puts(ptr noundef) #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 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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", !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"}
!13 = distinct !{!13, !12}
!14 = distinct !{!14, !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"

@.str = external hidden unnamed_addr constant [12 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [1 x i8], align 1

; Function Attrs: mustprogress nofree norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca [2 x i64], align 16
  %2 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %1) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  %3 = getelementptr inbounds i8, ptr %1, i64 8
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %3, ptr noundef nonnull %2)
  %5 = load i64, ptr %3, align 8, !tbaa !5
  %6 = load i64, ptr %1, align 16, !tbaa !5
  %.not = icmp slt i64 %5, %6
  %7 = zext i1 %.not to i32
  %8 = load i64, ptr %2, align 8, !tbaa !5
  %9 = icmp sgt i64 %8, 0
  br i1 %9, label %.lr.ph, label %..preheader_crit_edge

..preheader_crit_edge:                            ; preds = %0
  %.phi.trans.insert = zext i1 %.not to i64
  %.phi.trans.insert19 = getelementptr inbounds [2 x i64], ptr %1, i64 0, i64 %.phi.trans.insert
  %.pre = load i64, ptr %.phi.trans.insert19, align 8, !tbaa !5
  br label %.preheader

.preheader:                                       ; preds = %.lr.ph, %..preheader_crit_edge
  %.pre-phi = phi i64 [ %.phi.trans.insert, %..preheader_crit_edge ], [ %16, %.lr.ph ]
  %10 = phi i64 [ %.pre, %..preheader_crit_edge ], [ %19, %.lr.ph ]
  %.0.lcssa = phi i32 [ %7, %..preheader_crit_edge ], [ %12, %.lr.ph ]
  %11 = getelementptr inbounds [2 x i64], ptr %1, i64 0, i64 %.pre-phi
  %.not1013 = icmp eq i64 %10, 0
  br i1 %.not1013, label %._crit_edge, label %.lr.ph14

.lr.ph:                                           ; preds = %0, %.lr.ph
  %.012 = phi i32 [ %12, %.lr.ph ], [ %7, %0 ]
  %12 = sub nuw nsw i32 1, %.012
  %13 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %12)
  %14 = load i64, ptr %2, align 8, !tbaa !5
  %15 = add nsw i64 %14, -1
  store i64 %15, ptr %2, align 8, !tbaa !5
  %16 = zext nneg i32 %12 to i64
  %17 = getelementptr inbounds [2 x i64], ptr %1, i64 0, i64 %16
  %18 = load i64, ptr %17, align 8, !tbaa !5
  %19 = add nsw i64 %18, -1
  store i64 %19, ptr %17, align 8, !tbaa !5
  %20 = icmp sgt i64 %14, 1
  br i1 %20, label %.lr.ph, label %.preheader, !llvm.loop !9

.lr.ph14:                                         ; preds = %.preheader, %.lr.ph14
  %21 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %.0.lcssa)
  %22 = load i64, ptr %11, align 8, !tbaa !5
  %23 = add nsw i64 %22, -1
  store i64 %23, ptr %11, align 8, !tbaa !5
  %.not10 = icmp eq i64 %23, 0
  br i1 %.not10, label %._crit_edge, label %.lr.ph14, !llvm.loop !11

._crit_edge:                                      ; preds = %.lr.ph14, %.preheader
  %24 = xor i32 %.0.lcssa, 1
  %25 = zext nneg i32 %24 to i64
  %26 = getelementptr inbounds [2 x i64], ptr %1, i64 0, i64 %25
  %27 = load i64, ptr %26, align 8, !tbaa !5
  %.not1115 = icmp eq i64 %27, 0
  br i1 %.not1115, label %._crit_edge18, label %.lr.ph17

.lr.ph17:                                         ; preds = %._crit_edge, %.lr.ph17
  %28 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %24)
  %29 = load i64, ptr %26, align 8, !tbaa !5
  %30 = add nsw i64 %29, -1
  store i64 %30, ptr %26, align 8, !tbaa !5
  %.not11 = icmp eq i64 %30, 0
  br i1 %.not11, label %._crit_edge18, label %.lr.ph17, !llvm.loop !12

._crit_edge18:                                    ; preds = %.lr.ph17, %._crit_edge
  %31 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.2)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %1) #3
  ret i32 0
}

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

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @puts(ptr nocapture noundef readonly) 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 nofree norecurse 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 = { 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 #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", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = distinct !{!12, !10}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SCCPPass,SROAPass,SimplifyCFGPass