; LLVM IR from ravireddy07/cpp-book :: src/Code-Forces (edu#106_domino-on-windowsill)

; 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 [10 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@stdin = external global ptr, align 8
@.str.2 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [2 x i8], align 1
@stdout = external global ptr, align 8
@.str.4 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [4 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
  store i32 0, ptr %1, align 4
  %9 = load ptr, ptr @stdin, align 8, !tbaa !5
  %10 = call ptr @freopen(ptr noundef @.str, ptr noundef @.str.1, ptr noundef %9)
  %11 = load ptr, ptr @stdout, align 8, !tbaa !5
  %12 = call ptr @freopen(ptr noundef @.str.2, ptr noundef @.str.3, ptr noundef %11)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.4, ptr noundef %2)
  br label %14

14:                                               ; preds = %65, %0
  %15 = load i32, ptr %2, align 4, !tbaa !9
  %16 = add nsw i32 %15, -1
  store i32 %16, ptr %2, align 4, !tbaa !9
  %17 = icmp ne i32 %15, 0
  br i1 %17, label %18, label %66

18:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  %19 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.5, ptr noundef %3, ptr noundef %4, ptr noundef %5)
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  %20 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.6, ptr noundef %6, ptr noundef %7)
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  store i32 0, ptr %8, align 4, !tbaa !9
  %21 = load i32, ptr %3, align 4, !tbaa !9
  %22 = mul nsw i32 2, %21
  store i32 %22, ptr %8, align 4, !tbaa !9
  %23 = load i32, ptr %4, align 4, !tbaa !9
  %24 = load i32, ptr %5, align 4, !tbaa !9
  %25 = add nsw i32 %23, %24
  %26 = load i32, ptr %8, align 4, !tbaa !9
  %27 = icmp eq i32 %25, %26
  br i1 %27, label %28, label %30

28:                                               ; preds = %18
  %29 = call i32 (ptr, ...) @printf(ptr noundef @.str.7)
  br label %65

30:                                               ; preds = %18
  %31 = load i32, ptr %4, align 4, !tbaa !9
  %32 = icmp eq i32 %31, 0
  br i1 %32, label %33, label %38

33:                                               ; preds = %30
  %34 = load i32, ptr %5, align 4, !tbaa !9
  %35 = icmp eq i32 %34, 0
  br i1 %35, label %36, label %38

36:                                               ; preds = %33
  %37 = call i32 (ptr, ...) @printf(ptr noundef @.str.8)
  br label %64

38:                                               ; preds = %33, %30
  %39 = load i32, ptr %4, align 4, !tbaa !9
  %40 = icmp ne i32 %39, 0
  br i1 %40, label %41, label %44

41:                                               ; preds = %38
  %42 = load i32, ptr %8, align 4, !tbaa !9
  %43 = add nsw i32 %42, -1
  store i32 %43, ptr %8, align 4, !tbaa !9
  br label %44

44:                                               ; preds = %41, %38
  %45 = load i32, ptr %5, align 4, !tbaa !9
  %46 = icmp ne i32 %45, 0
  br i1 %46, label %47, label %50

47:                                               ; preds = %44
  %48 = load i32, ptr %8, align 4, !tbaa !9
  %49 = add nsw i32 %48, -1
  store i32 %49, ptr %8, align 4, !tbaa !9
  br label %50

50:                                               ; preds = %47, %44
  %51 = load i32, ptr %6, align 4, !tbaa !9
  %52 = load i32, ptr %8, align 4, !tbaa !9
  %53 = sub nsw i32 %52, %51
  store i32 %53, ptr %8, align 4, !tbaa !9
  %54 = load i32, ptr %7, align 4, !tbaa !9
  %55 = load i32, ptr %8, align 4, !tbaa !9
  %56 = sub nsw i32 %55, %54
  store i32 %56, ptr %8, align 4, !tbaa !9
  %57 = load i32, ptr %8, align 4, !tbaa !9
  %58 = icmp sgt i32 %57, 0
  br i1 %58, label %59, label %61

59:                                               ; preds = %50
  %60 = call i32 (ptr, ...) @printf(ptr noundef @.str.7)
  br label %63

61:                                               ; preds = %50
  %62 = call i32 (ptr, ...) @printf(ptr noundef @.str.8)
  br label %63

63:                                               ; preds = %61, %59
  br label %64

64:                                               ; preds = %63, %36
  br label %65

65:                                               ; preds = %64, %28
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  br label %14, !llvm.loop !11

66:                                               ; preds = %14
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #3
  ret i32 0
}

declare ptr @freopen(ptr noundef, ptr noundef, ptr noundef) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

declare i32 @__isoc99_scanf(ptr noundef, ...) #1

declare i32 @printf(ptr noundef, ...) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 = { "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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"any pointer", !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"

@.str = external hidden unnamed_addr constant [10 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@stdin = external local_unnamed_addr global ptr, align 8
@.str.2 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [2 x i8], align 1
@stdout = external local_unnamed_addr global ptr, align 8
@.str.4 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress norecurse 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
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = load ptr, ptr @stdin, align 8, !tbaa !5
  %8 = tail call ptr @freopen(ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, ptr noundef %7)
  %9 = load ptr, ptr @stdout, align 8, !tbaa !5
  %10 = tail call ptr @freopen(ptr noundef nonnull @.str.2, ptr noundef nonnull @.str.3, ptr noundef %9)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #4
  %11 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.4, ptr noundef nonnull %1)
  %12 = load i32, ptr %1, align 4, !tbaa !9
  %13 = add nsw i32 %12, -1
  store i32 %13, ptr %1, align 4, !tbaa !9
  %.not12 = icmp eq i32 %12, 0
  br i1 %.not12, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %0, %32
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #4
  %14 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.5, ptr noundef nonnull %2, ptr noundef nonnull %3, ptr noundef nonnull %4)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %6) #4
  %15 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.6, ptr noundef nonnull %5, ptr noundef nonnull %6)
  %16 = load i32, ptr %2, align 4, !tbaa !9
  %17 = shl nsw i32 %16, 1
  %18 = load i32, ptr %3, align 4, !tbaa !9
  %19 = load i32, ptr %4, align 4
  %20 = add nsw i32 %19, %18
  %21 = icmp eq i32 %20, %17
  br i1 %21, label %32, label %22

22:                                               ; preds = %.lr.ph
  %23 = or i32 %19, %18
  %or.cond = icmp eq i32 %23, 0
  br i1 %or.cond, label %32, label %24

24:                                               ; preds = %22
  %.not8 = icmp ne i32 %18, 0
  %25 = sext i1 %.not8 to i32
  %.not9 = icmp ne i32 %19, 0
  %26 = sext i1 %.not9 to i32
  %27 = load i32, ptr %5, align 4, !tbaa !9
  %28 = load i32, ptr %6, align 4, !tbaa !9
  %.neg11 = add i32 %17, %25
  %spec.select = add i32 %.neg11, %26
  %29 = add i32 %27, %28
  %30 = sub i32 %spec.select, %29
  %31 = icmp sgt i32 %30, 0
  %.str.7..str.8 = select i1 %31, ptr @.str.7, ptr @.str.8
  br label %32

32:                                               ; preds = %24, %22, %.lr.ph
  %.str.8.sink = phi ptr [ @.str.7, %.lr.ph ], [ @.str.8, %22 ], [ %.str.7..str.8, %24 ]
  %33 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) %.str.8.sink)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #4
  %34 = load i32, ptr %1, align 4, !tbaa !9
  %35 = add nsw i32 %34, -1
  store i32 %35, ptr %1, align 4, !tbaa !9
  %.not = icmp eq i32 %34, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !11

._crit_edge:                                      ; preds = %32, %0
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #4
  ret i32 0
}

declare ptr @freopen(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

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

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

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 = { "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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"any pointer", !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"}


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