; LLVM IR from omonimus1/competitive-programming :: codechef (ADASCOOL)

; 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 [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [4 x i8], align 1

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

7:                                                ; preds = %42, %0
  %8 = load i32, ptr %3, align 4, !tbaa !5
  %9 = load i32, ptr %2, align 4, !tbaa !5
  %10 = icmp slt i32 %8, %9
  br i1 %10, label %11, label %14

11:                                               ; preds = %7
  %12 = load i32, ptr %2, align 4, !tbaa !5
  %13 = icmp sle i32 %12, 5000
  br label %14

14:                                               ; preds = %11, %7
  %15 = phi i1 [ false, %7 ], [ %13, %11 ]
  br i1 %15, label %17, label %16

16:                                               ; preds = %14
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  br label %45

17:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  %18 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %4, ptr noundef %5)
  %19 = load i32, ptr %4, align 4, !tbaa !5
  %20 = icmp sge i32 %19, 2
  br i1 %20, label %21, label %41

21:                                               ; preds = %17
  %22 = load i32, ptr %4, align 4, !tbaa !5
  %23 = icmp sle i32 %22, 50
  br i1 %23, label %24, label %41

24:                                               ; preds = %21
  %25 = load i32, ptr %5, align 4, !tbaa !5
  %26 = icmp sge i32 %25, 2
  br i1 %26, label %27, label %41

27:                                               ; preds = %24
  %28 = load i32, ptr %5, align 4, !tbaa !5
  %29 = icmp sle i32 %28, 50
  br i1 %29, label %30, label %41

30:                                               ; preds = %27
  %31 = load i32, ptr %4, align 4, !tbaa !5
  %32 = load i32, ptr %5, align 4, !tbaa !5
  %33 = mul nsw i32 %31, %32
  %34 = srem i32 %33, 2
  %35 = icmp eq i32 %34, 0
  br i1 %35, label %36, label %38

36:                                               ; preds = %30
  %37 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  br label %40

38:                                               ; preds = %30
  %39 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  br label %40

40:                                               ; preds = %38, %36
  br label %41

41:                                               ; preds = %40, %27, %24, %21, %17
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  br label %42

42:                                               ; preds = %41
  %43 = load i32, ptr %3, align 4, !tbaa !5
  %44 = add nsw i32 %43, 1
  store i32 %44, ptr %3, align 4, !tbaa !5
  br label %7, !llvm.loop !9

45:                                               ; preds = %16
  call void @llvm.lifetime.end.p0(i64 4, 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

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

attributes #0 = { 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 = { 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/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"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 [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: nofree 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) #3
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %5 = load i32, ptr %1, align 4
  %6 = add i32 %5, -1
  %7 = icmp ult i32 %6, 5000
  br i1 %7, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %18, %0
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #3
  ret i32 0

.lr.ph:                                           ; preds = %0, %18
  %.09 = phi i32 [ %19, %18 ], [ 0, %0 ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #3
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %2, ptr noundef nonnull %3)
  %9 = load i32, ptr %2, align 4
  %10 = add i32 %9, -2
  %or.cond = icmp ult i32 %10, 49
  %11 = load i32, ptr %3, align 4
  %12 = add i32 %11, -2
  %13 = icmp ult i32 %12, 49
  %or.cond5 = select i1 %or.cond, i1 %13, i1 false
  br i1 %or.cond5, label %.sink.split, label %18

.sink.split:                                      ; preds = %.lr.ph
  %14 = mul nuw nsw i32 %11, %9
  %15 = and i32 %14, 1
  %16 = icmp eq i32 %15, 0
  %.str.2..str.3 = select i1 %16, ptr @.str.2, ptr @.str.3
  %17 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) %.str.2..str.3)
  br label %18

18:                                               ; preds = %.sink.split, %.lr.ph
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #3
  %19 = add nuw nsw i32 %.09, 1
  %20 = load i32, ptr %1, align 4
  %21 = icmp slt i32 %19, %20
  %22 = icmp slt i32 %20, 5001
  %23 = and i1 %21, %22
  br i1 %23, label %.lr.ph, label %._crit_edge, !llvm.loop !5
}

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

attributes #0 = { nofree 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


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