; LLVM IR from DionysiosB/CodeForces :: 1200-1299 (1206B-MakeProductEqualOne)

; 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 [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i8, align 1
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  store i64 0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  store i64 0, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %5) #3
  store i8 0, ptr %5, align 1, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store i64 0, ptr %6, align 8, !tbaa !5
  br label %9

9:                                                ; preds = %43, %0
  %10 = load i64, ptr %6, align 8, !tbaa !5
  %11 = load i64, ptr %2, align 8, !tbaa !5
  %12 = icmp slt i64 %10, %11
  br i1 %12, label %14, label %13

13:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %46

14:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %15 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %7)
  %16 = load i64, ptr %7, align 8, !tbaa !5
  %17 = icmp eq i64 %16, 0
  br i1 %17, label %18, label %21

18:                                               ; preds = %14
  %19 = load i64, ptr %4, align 8, !tbaa !5
  %20 = add nsw i64 %19, 1
  store i64 %20, ptr %4, align 8, !tbaa !5
  store i8 1, ptr %5, align 1, !tbaa !9
  br label %42

21:                                               ; preds = %14
  %22 = load i64, ptr %7, align 8, !tbaa !5
  %23 = icmp sgt i64 %22, 0
  br i1 %23, label %24, label %29

24:                                               ; preds = %21
  %25 = load i64, ptr %7, align 8, !tbaa !5
  %26 = sub nsw i64 %25, 1
  %27 = load i64, ptr %4, align 8, !tbaa !5
  %28 = add nsw i64 %27, %26
  store i64 %28, ptr %4, align 8, !tbaa !5
  br label %41

29:                                               ; preds = %21
  %30 = load i64, ptr %7, align 8, !tbaa !5
  %31 = icmp slt i64 %30, 0
  br i1 %31, label %32, label %40

32:                                               ; preds = %29
  %33 = load i64, ptr %7, align 8, !tbaa !5
  %34 = sub nsw i64 0, %33
  %35 = sub nsw i64 %34, 1
  %36 = load i64, ptr %4, align 8, !tbaa !5
  %37 = add nsw i64 %36, %35
  store i64 %37, ptr %4, align 8, !tbaa !5
  %38 = load i64, ptr %3, align 8, !tbaa !5
  %39 = add nsw i64 %38, 1
  store i64 %39, ptr %3, align 8, !tbaa !5
  br label %40

40:                                               ; preds = %32, %29
  br label %41

41:                                               ; preds = %40, %24
  br label %42

42:                                               ; preds = %41, %18
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  br label %43

43:                                               ; preds = %42
  %44 = load i64, ptr %6, align 8, !tbaa !5
  %45 = add nsw i64 %44, 1
  store i64 %45, ptr %6, align 8, !tbaa !5
  br label %9, !llvm.loop !11

46:                                               ; preds = %13
  %47 = load i8, ptr %5, align 1, !tbaa !9, !range !13, !noundef !14
  %48 = trunc i8 %47 to i1
  %49 = xor i1 %48, true
  %50 = zext i1 %49 to i32
  %51 = mul nsw i32 2, %50
  %52 = sext i32 %51 to i64
  %53 = load i64, ptr %3, align 8, !tbaa !5
  %54 = srem i64 %53, 2
  %55 = mul nsw i64 %52, %54
  %56 = load i64, ptr %4, align 8, !tbaa !5
  %57 = add nsw i64 %56, %55
  store i64 %57, ptr %4, align 8, !tbaa !5
  %58 = load i64, ptr %4, align 8, !tbaa !5
  %59 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i64 noundef %58)
  call void @llvm.lifetime.end.p0(i64 1, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 8, 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

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

declare i32 @printf(ptr noundef, ...) #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 = { 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 long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"bool", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{i8 0, i8 2}
!14 = !{}


; 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 [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress nofree norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i64, align 8
  %2 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  %3 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %4 = load i64, ptr %1, align 8, !tbaa !5
  %5 = icmp sgt i64 %4, 0
  br i1 %5, label %.lr.ph, label %._crit_edge

._crit_edge.loopexit:                             ; preds = %29
  %6 = shl nuw nsw i8 %.1, 1
  %7 = and i8 %6, 2
  %8 = xor i8 %7, 2
  %9 = zext nneg i8 %8 to i64
  %10 = srem i64 %.114, 2
  %11 = mul nsw i64 %10, %9
  %12 = add nsw i64 %11, %.112
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %0
  %13 = phi i64 [ 0, %0 ], [ %12, %._crit_edge.loopexit ]
  %14 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i64 noundef %13)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #3
  ret i32 0

.lr.ph:                                           ; preds = %0, %29
  %.019 = phi i64 [ %30, %29 ], [ 0, %0 ]
  %.01018 = phi i8 [ %.1, %29 ], [ 0, %0 ]
  %.01117 = phi i64 [ %.112, %29 ], [ 0, %0 ]
  %.01316 = phi i64 [ %.114, %29 ], [ 0, %0 ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  %15 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %2)
  %16 = load i64, ptr %2, align 8, !tbaa !5
  %17 = icmp eq i64 %16, 0
  br i1 %17, label %18, label %20

18:                                               ; preds = %.lr.ph
  %19 = add nuw nsw i64 %.01117, 1
  br label %29

20:                                               ; preds = %.lr.ph
  %21 = icmp sgt i64 %16, 0
  br i1 %21, label %22, label %25

22:                                               ; preds = %20
  %23 = add i64 %.01117, -1
  %24 = add i64 %23, %16
  br label %29

25:                                               ; preds = %20
  %26 = xor i64 %16, -1
  %27 = add nuw nsw i64 %.01117, %26
  %28 = add nsw i64 %.01316, 1
  br label %29

29:                                               ; preds = %22, %25, %18
  %.114 = phi i64 [ %.01316, %18 ], [ %.01316, %22 ], [ %28, %25 ]
  %.112 = phi i64 [ %19, %18 ], [ %24, %22 ], [ %27, %25 ]
  %.1 = phi i8 [ 1, %18 ], [ %.01018, %22 ], [ %.01018, %25 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  %30 = add nuw nsw i64 %.019, 1
  %31 = load i64, ptr %1, align 8, !tbaa !5
  %32 = icmp slt i64 %30, %31
  br i1 %32, label %.lr.ph, label %._crit_edge.loopexit, !llvm.loop !9
}

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

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

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 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,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SCCPPass,SROAPass,SimplifyCFGPass