; LLVM IR from Shah-Shishir/Codeforces-Solutions :: 1008B. Turn the Rectangles (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"

@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [5 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 i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i8, align 1
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  call void @llvm.lifetime.start.p0(i64 1, ptr %9) #4
  br label %10

10:                                               ; preds = %57, %0
  %11 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  %12 = icmp ne i32 %11, -1
  br i1 %12, label %13, label %58

13:                                               ; preds = %10
  %14 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %4, ptr noundef %5)
  %15 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %4, ptr noundef nonnull align 4 dereferenceable(4) %5)
  %16 = load i32, ptr %15, align 4, !tbaa !5
  store i32 %16, ptr %6, align 4, !tbaa !5
  store i8 1, ptr %9, align 1, !tbaa !9
  store i32 2, ptr %3, align 4, !tbaa !5
  br label %17

17:                                               ; preds = %45, %13
  %18 = load i32, ptr %3, align 4, !tbaa !5
  %19 = load i32, ptr %2, align 4, !tbaa !5
  %20 = icmp sle i32 %18, %19
  br i1 %20, label %21, label %48

21:                                               ; preds = %17
  %22 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %4, ptr noundef %5)
  %23 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %4, ptr noundef nonnull align 4 dereferenceable(4) %5)
  %24 = load i32, ptr %23, align 4, !tbaa !5
  store i32 %24, ptr %8, align 4, !tbaa !5
  %25 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %4, ptr noundef nonnull align 4 dereferenceable(4) %5)
  %26 = load i32, ptr %25, align 4, !tbaa !5
  store i32 %26, ptr %7, align 4, !tbaa !5
  %27 = load i8, ptr %9, align 1, !tbaa !9, !range !11, !noundef !12
  %28 = trunc i8 %27 to i1
  br i1 %28, label %29, label %44

29:                                               ; preds = %21
  %30 = load i32, ptr %8, align 4, !tbaa !5
  %31 = load i32, ptr %6, align 4, !tbaa !5
  %32 = icmp sle i32 %30, %31
  br i1 %32, label %33, label %35

33:                                               ; preds = %29
  %34 = load i32, ptr %8, align 4, !tbaa !5
  store i32 %34, ptr %6, align 4, !tbaa !5
  br label %43

35:                                               ; preds = %29
  %36 = load i32, ptr %7, align 4, !tbaa !5
  %37 = load i32, ptr %6, align 4, !tbaa !5
  %38 = icmp sle i32 %36, %37
  br i1 %38, label %39, label %41

39:                                               ; preds = %35
  %40 = load i32, ptr %7, align 4, !tbaa !5
  store i32 %40, ptr %6, align 4, !tbaa !5
  br label %42

41:                                               ; preds = %35
  store i8 0, ptr %9, align 1, !tbaa !9
  br label %42

42:                                               ; preds = %41, %39
  br label %43

43:                                               ; preds = %42, %33
  br label %44

44:                                               ; preds = %43, %21
  br label %45

45:                                               ; preds = %44
  %46 = load i32, ptr %3, align 4, !tbaa !5
  %47 = add nsw i32 %46, 1
  store i32 %47, ptr %3, align 4, !tbaa !5
  br label %17, !llvm.loop !13

48:                                               ; preds = %17
  %49 = load i8, ptr %9, align 1, !tbaa !9, !range !11, !noundef !12
  %50 = trunc i8 %49 to i1
  %51 = zext i1 %50 to i32
  %52 = icmp eq i32 %51, 0
  br i1 %52, label %53, label %55

53:                                               ; preds = %48
  %54 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  br label %57

55:                                               ; preds = %48
  %56 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  br label %57

57:                                               ; preds = %55, %53
  br label %10, !llvm.loop !15

58:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 1, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  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: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #3

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #3

declare i32 @printf(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 = { inlinehint 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 = { 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 = !{!"bool", !7, i64 0}
!11 = !{i8 0, i8 2}
!12 = !{}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !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 [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [5 x i8], align 1

; Function Attrs: mustprogress norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #5
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %.not22 = icmp eq i32 %4, -1
  br i1 %.not22, label %._crit_edge25, label %.lr.ph24

.lr.ph24:                                         ; preds = %0, %22
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %2, ptr noundef nonnull %3)
  %6 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %2, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %7 = load i32, ptr %1, align 4, !tbaa !5
  %.not1518 = icmp slt i32 %7, 2
  br i1 %.not1518, label %._crit_edge.thread, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %.lr.ph24
  %8 = load i32, ptr %6, align 4, !tbaa !5
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %17
  %.021 = phi i8 [ %.1, %17 ], [ 1, %.lr.ph.preheader ]
  %.01020 = phi i32 [ %18, %17 ], [ 2, %.lr.ph.preheader ]
  %.01119 = phi i32 [ %.112, %17 ], [ %8, %.lr.ph.preheader ]
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %2, ptr noundef nonnull %3)
  %10 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %2, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %11 = load i32, ptr %10, align 4, !tbaa !5
  %12 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %2, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %13 = load i32, ptr %12, align 4, !tbaa !5
  %14 = trunc nuw i8 %.021 to i1
  br i1 %14, label %15, label %17

15:                                               ; preds = %.lr.ph
  %.not16 = icmp sgt i32 %11, %.01119
  br i1 %.not16, label %16, label %17

16:                                               ; preds = %15
  %.not17 = icmp sgt i32 %13, %.01119
  %.011. = call i32 @llvm.smin.i32(i32 %13, i32 %.01119)
  %..0 = select i1 %.not17, i8 0, i8 %.021
  br label %17

17:                                               ; preds = %16, %15, %.lr.ph
  %.112 = phi i32 [ %.01119, %.lr.ph ], [ %11, %15 ], [ %.011., %16 ]
  %.1 = phi i8 [ %.021, %.lr.ph ], [ %.021, %15 ], [ %..0, %16 ]
  %18 = add nuw nsw i32 %.01020, 1
  %19 = load i32, ptr %1, align 4, !tbaa !5
  %.not15.not = icmp slt i32 %.01020, %19
  br i1 %.not15.not, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %17
  %20 = and i8 %.1, 1
  %21 = icmp eq i8 %20, 0
  br i1 %21, label %22, label %._crit_edge.thread

._crit_edge.thread:                               ; preds = %.lr.ph24, %._crit_edge
  br label %22

22:                                               ; preds = %._crit_edge, %._crit_edge.thread
  %.str.3.sink = phi ptr [ @.str.3, %._crit_edge.thread ], [ @.str.2, %._crit_edge ]
  %23 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) %.str.3.sink)
  %24 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %.not = icmp eq i32 %24, -1
  br i1 %.not, label %._crit_edge25, label %.lr.ph24, !llvm.loop !11

._crit_edge25:                                    ; preds = %22, %0
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #5
  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: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #3

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #3

; Function Attrs: nofree nounwind
declare noundef i32 @printf(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: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smin.i32(i32, i32) #4

attributes #0 = { mustprogress 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 = { inlinehint 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 speculatable willreturn memory(none) }
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"}
!11 = distinct !{!11, !10}


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