; LLVM IR from DionysiosB/CodeForces :: 2010B-ThreeBrothers (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 [6 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.4 = 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 i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2, ptr noundef %3)
  %6 = load i32, ptr %2, align 4, !tbaa !5
  %7 = load i32, ptr %3, align 4, !tbaa !5
  %8 = icmp sgt i32 %6, %7
  br i1 %8, label %9, label %13

9:                                                ; preds = %0
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  %10 = load i32, ptr %2, align 4, !tbaa !5
  store i32 %10, ptr %4, align 4, !tbaa !5
  %11 = load i32, ptr %3, align 4, !tbaa !5
  store i32 %11, ptr %2, align 4, !tbaa !5
  %12 = load i32, ptr %4, align 4, !tbaa !5
  store i32 %12, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  br label %13

13:                                               ; preds = %9, %0
  %14 = load i32, ptr %2, align 4, !tbaa !5
  %15 = icmp eq i32 %14, 1
  br i1 %15, label %16, label %21

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

19:                                               ; preds = %16
  %20 = call i32 @puts(ptr noundef @.str.1)
  br label %41

21:                                               ; preds = %16, %13
  %22 = load i32, ptr %2, align 4, !tbaa !5
  %23 = icmp eq i32 %22, 1
  br i1 %23, label %24, label %29

24:                                               ; preds = %21
  %25 = load i32, ptr %3, align 4, !tbaa !5
  %26 = icmp eq i32 %25, 3
  br i1 %26, label %27, label %29

27:                                               ; preds = %24
  %28 = call i32 @puts(ptr noundef @.str.2)
  br label %40

29:                                               ; preds = %24, %21
  %30 = load i32, ptr %2, align 4, !tbaa !5
  %31 = icmp eq i32 %30, 2
  br i1 %31, label %32, label %37

32:                                               ; preds = %29
  %33 = load i32, ptr %3, align 4, !tbaa !5
  %34 = icmp eq i32 %33, 3
  br i1 %34, label %35, label %37

35:                                               ; preds = %32
  %36 = call i32 @puts(ptr noundef @.str.3)
  br label %39

37:                                               ; preds = %32, %29
  %38 = call i32 @puts(ptr noundef @.str.4)
  br label %39

39:                                               ; preds = %37, %35
  br label %40

40:                                               ; preds = %39, %27
  br label %41

41:                                               ; preds = %40, %19
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #3
  %42 = load i32, ptr %1, align 4
  ret i32 %42
}

; 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 @puts(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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


; 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 [6 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.4 = 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 i32, align 4
  %2 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #3
  %3 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2)
  %4 = load i32, ptr %1, align 4, !tbaa !5
  %5 = load i32, ptr %2, align 4
  %6 = icmp sgt i32 %4, %5
  br i1 %6, label %7, label %8

7:                                                ; preds = %0
  store i32 %5, ptr %1, align 4, !tbaa !5
  store i32 %4, ptr %2, align 4, !tbaa !5
  br label %8

8:                                                ; preds = %7, %0
  %9 = phi i32 [ %4, %7 ], [ %5, %0 ]
  %10 = phi i32 [ %5, %7 ], [ %4, %0 ]
  %11 = icmp eq i32 %10, 1
  %12 = icmp eq i32 %9, 2
  %or.cond = and i1 %11, %12
  br i1 %or.cond, label %17, label %13

13:                                               ; preds = %8
  %14 = icmp eq i32 %9, 3
  %or.cond3 = and i1 %11, %14
  br i1 %or.cond3, label %17, label %15

15:                                               ; preds = %13
  %16 = icmp eq i32 %10, 2
  %or.cond5 = and i1 %16, %14
  %.str.3..str.4 = select i1 %or.cond5, ptr @.str.3, ptr @.str.4
  br label %17

17:                                               ; preds = %15, %13, %8
  %.str.2.sink = phi ptr [ @.str.1, %8 ], [ @.str.2, %13 ], [ %.str.3..str.4, %15 ]
  %18 = call i32 @puts(ptr noundef nonnull dereferenceable(1) %.str.2.sink)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #3
  call void @llvm.lifetime.end.p0(i64 4, 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: 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 @puts(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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass