; LLVM IR from tangjz/acm-icpc :: codechef/OCT13 (HELPLIRA)

; 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"

@n = external dso_local global i32, align 4
@x = external dso_local global [3 x i32], align 4
@y = external dso_local global [3 x i32], align 4
@s = external dso_local global i32, align 4
@Max = external dso_local global [2 x i32], align 4
@Min = external dso_local global [2 x i32], align 4
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [7 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
  store i32 0, ptr %1, align 4
  %3 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @n)
  store i32 2147483647, ptr getelementptr inbounds ([2 x i32], ptr @Min, i64 0, i64 1), align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  store i32 1, ptr %2, align 4, !tbaa !5
  br label %4

4:                                                ; preds = %41, %0
  %5 = load i32, ptr %2, align 4, !tbaa !5
  %6 = load i32, ptr @n, align 4, !tbaa !5
  %7 = icmp sle i32 %5, %6
  br i1 %7, label %9, label %8

8:                                                ; preds = %4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  br label %44

9:                                                ; preds = %4
  %10 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef @x, ptr noundef @y, ptr noundef getelementptr inbounds ([3 x i32], ptr @x, i64 0, i64 1), ptr noundef getelementptr inbounds ([3 x i32], ptr @y, i64 0, i64 1), ptr noundef getelementptr inbounds ([3 x i32], ptr @x, i64 0, i64 2), ptr noundef getelementptr inbounds ([3 x i32], ptr @y, i64 0, i64 2))
  %11 = load i32, ptr getelementptr inbounds ([3 x i32], ptr @x, i64 0, i64 1), align 4, !tbaa !5
  %12 = load i32, ptr @x, align 4, !tbaa !5
  %13 = sub nsw i32 %11, %12
  %14 = load i32, ptr getelementptr inbounds ([3 x i32], ptr @y, i64 0, i64 2), align 4, !tbaa !5
  %15 = load i32, ptr @y, align 4, !tbaa !5
  %16 = sub nsw i32 %14, %15
  %17 = mul nsw i32 %13, %16
  %18 = load i32, ptr getelementptr inbounds ([3 x i32], ptr @x, i64 0, i64 2), align 4, !tbaa !5
  %19 = load i32, ptr @x, align 4, !tbaa !5
  %20 = sub nsw i32 %18, %19
  %21 = load i32, ptr getelementptr inbounds ([3 x i32], ptr @y, i64 0, i64 1), align 4, !tbaa !5
  %22 = load i32, ptr @y, align 4, !tbaa !5
  %23 = sub nsw i32 %21, %22
  %24 = mul nsw i32 %20, %23
  %25 = sub nsw i32 %17, %24
  %26 = call noundef i32 @_Z3Absi(i32 noundef %25)
  store i32 %26, ptr @s, align 4, !tbaa !5
  %27 = load i32, ptr @s, align 4, !tbaa !5
  %28 = load i32, ptr getelementptr inbounds ([2 x i32], ptr @Max, i64 0, i64 1), align 4, !tbaa !5
  %29 = icmp sge i32 %27, %28
  br i1 %29, label %30, label %33

30:                                               ; preds = %9
  %31 = load i32, ptr @s, align 4, !tbaa !5
  store i32 %31, ptr getelementptr inbounds ([2 x i32], ptr @Max, i64 0, i64 1), align 4, !tbaa !5
  %32 = load i32, ptr %2, align 4, !tbaa !5
  store i32 %32, ptr @Max, align 4, !tbaa !5
  br label %33

33:                                               ; preds = %30, %9
  %34 = load i32, ptr @s, align 4, !tbaa !5
  %35 = load i32, ptr getelementptr inbounds ([2 x i32], ptr @Min, i64 0, i64 1), align 4, !tbaa !5
  %36 = icmp sle i32 %34, %35
  br i1 %36, label %37, label %40

37:                                               ; preds = %33
  %38 = load i32, ptr @s, align 4, !tbaa !5
  store i32 %38, ptr getelementptr inbounds ([2 x i32], ptr @Min, i64 0, i64 1), align 4, !tbaa !5
  %39 = load i32, ptr %2, align 4, !tbaa !5
  store i32 %39, ptr @Min, align 4, !tbaa !5
  br label %40

40:                                               ; preds = %37, %33
  br label %41

41:                                               ; preds = %40
  %42 = load i32, ptr %2, align 4, !tbaa !5
  %43 = add nsw i32 %42, 1
  store i32 %43, ptr %2, align 4, !tbaa !5
  br label %4, !llvm.loop !9

44:                                               ; preds = %8
  %45 = load i32, ptr @Min, align 4, !tbaa !5
  %46 = load i32, ptr @Max, align 4, !tbaa !5
  %47 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %45, i32 noundef %46)
  ret i32 0
}

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

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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z3Absi(i32 noundef) #3

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

declare i32 @printf(ptr noundef, ...) #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 = { "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 = { 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 = 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"

@n = external dso_local global i32, align 4
@x = external dso_local global [3 x i32], align 4
@y = external dso_local global [3 x i32], align 4
@s = external dso_local local_unnamed_addr global i32, align 4
@Max = external dso_local local_unnamed_addr global [2 x i32], align 4
@Min = external dso_local local_unnamed_addr global [2 x i32], align 4
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [7 x i8], align 1

; Function Attrs: mustprogress norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n)
  store i32 2147483647, ptr getelementptr inbounds (i8, ptr @Min, i64 4), align 4, !tbaa !5
  %2 = load i32, ptr @n, align 4, !tbaa !5
  %.not9 = icmp slt i32 %2, 1
  br i1 %.not9, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %24, %0
  %3 = load i32, ptr @Min, align 4, !tbaa !5
  %4 = load i32, ptr @Max, align 4, !tbaa !5
  %5 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %3, i32 noundef %4)
  ret i32 0

.lr.ph:                                           ; preds = %0, %24
  %.010 = phi i32 [ %25, %24 ], [ 1, %0 ]
  %6 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull @x, ptr noundef nonnull @y, ptr noundef nonnull getelementptr inbounds (i8, ptr @x, i64 4), ptr noundef nonnull getelementptr inbounds (i8, ptr @y, i64 4), ptr noundef nonnull getelementptr inbounds (i8, ptr @x, i64 8), ptr noundef nonnull getelementptr inbounds (i8, ptr @y, i64 8))
  %7 = load i32, ptr getelementptr inbounds (i8, ptr @x, i64 4), align 4, !tbaa !5
  %8 = load i32, ptr @x, align 4, !tbaa !5
  %9 = sub nsw i32 %7, %8
  %10 = load i32, ptr getelementptr inbounds (i8, ptr @y, i64 8), align 4, !tbaa !5
  %11 = load i32, ptr @y, align 4, !tbaa !5
  %12 = sub nsw i32 %10, %11
  %13 = mul nsw i32 %12, %9
  %14 = load i32, ptr getelementptr inbounds (i8, ptr @x, i64 8), align 4, !tbaa !5
  %15 = sub nsw i32 %14, %8
  %16 = load i32, ptr getelementptr inbounds (i8, ptr @y, i64 4), align 4, !tbaa !5
  %.neg = sub i32 %11, %16
  %.neg6 = mul i32 %.neg, %15
  %17 = add i32 %.neg6, %13
  %18 = tail call noundef i32 @_Z3Absi(i32 noundef %17)
  store i32 %18, ptr @s, align 4, !tbaa !5
  %19 = load i32, ptr getelementptr inbounds (i8, ptr @Max, i64 4), align 4, !tbaa !5
  %.not7 = icmp slt i32 %18, %19
  br i1 %.not7, label %21, label %20

20:                                               ; preds = %.lr.ph
  store i32 %18, ptr getelementptr inbounds (i8, ptr @Max, i64 4), align 4, !tbaa !5
  store i32 %.010, ptr @Max, align 4, !tbaa !5
  br label %21

21:                                               ; preds = %20, %.lr.ph
  %22 = load i32, ptr getelementptr inbounds (i8, ptr @Min, i64 4), align 4, !tbaa !5
  %.not8 = icmp sgt i32 %18, %22
  br i1 %.not8, label %24, label %23

23:                                               ; preds = %21
  store i32 %18, ptr getelementptr inbounds (i8, ptr @Min, i64 4), align 4, !tbaa !5
  store i32 %.010, ptr @Min, align 4, !tbaa !5
  br label %24

24:                                               ; preds = %21, %23
  %25 = add nuw nsw i32 %.010, 1
  %26 = load i32, ptr @n, align 4, !tbaa !5
  %.not.not = icmp slt i32 %.010, %26
  br i1 %.not.not, label %.lr.ph, label %._crit_edge, !llvm.loop !9
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z3Absi(i32 noundef) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

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 = { 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 #2 = { 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" }

!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"}


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