; LLVM IR from HarshCasper/NeoAlgo :: C-Plus-Plus/ds (Double_Ended_Queue)

; 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"

%struct.dequeue = type { [10 x i32], i32, i32 }

@dq = external dso_local global %struct.dequeue, align 4
@.str.3 = external hidden unnamed_addr constant [59 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [40 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [31 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [17 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [33 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [32 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z13enqueue_fronti(i32 noundef) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z12enqueue_reari(i32 noundef) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z12delete_frontv() #0

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

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z11delete_rearv() #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z7displayv() #2

declare i32 @printf(ptr noundef, ...) #3

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #4 {
  %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) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #5
  %5 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  %6 = call i32 (ptr, ...) @printf(ptr noundef @.str.4)
  %7 = call i32 (ptr, ...) @printf(ptr noundef @.str.5)
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.6, ptr noundef %2)
  store i32 -1, ptr getelementptr inbounds (%struct.dequeue, ptr @dq, i32 0, i32 1), align 4, !tbaa !5
  store i32 -1, ptr getelementptr inbounds (%struct.dequeue, ptr @dq, i32 0, i32 2), align 4, !tbaa !10
  br label %9

9:                                                ; preds = %34, %0
  %10 = load i32, ptr %2, align 4, !tbaa !11
  %11 = add nsw i32 %10, -1
  store i32 %11, ptr %2, align 4, !tbaa !11
  %12 = icmp ne i32 %10, 0
  br i1 %12, label %13, label %35

13:                                               ; preds = %9
  %14 = call i32 (ptr, ...) @printf(ptr noundef @.str.7)
  %15 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.6, ptr noundef %3)
  %16 = load i32, ptr %3, align 4, !tbaa !11
  switch i32 %16, label %34 [
    i32 1, label %17
    i32 2, label %21
    i32 3, label %25
    i32 4, label %29
    i32 5, label %33
  ]

17:                                               ; preds = %13
  %18 = call i32 (ptr, ...) @printf(ptr noundef @.str.8)
  %19 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.6, ptr noundef %4)
  %20 = load i32, ptr %4, align 4, !tbaa !11
  call void @_Z13enqueue_fronti(i32 noundef %20)
  br label %34

21:                                               ; preds = %13
  %22 = call i32 (ptr, ...) @printf(ptr noundef @.str.8)
  %23 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.6, ptr noundef %4)
  %24 = load i32, ptr %4, align 4, !tbaa !11
  call void @_Z12enqueue_reari(i32 noundef %24)
  br label %34

25:                                               ; preds = %13
  %26 = call i32 (ptr, ...) @printf(ptr noundef @.str.9)
  %27 = call noundef i32 @_Z12delete_frontv()
  %28 = call i32 (ptr, ...) @printf(ptr noundef @.str.10, i32 noundef %27)
  br label %34

29:                                               ; preds = %13
  %30 = call i32 (ptr, ...) @printf(ptr noundef @.str.9)
  %31 = call noundef i32 @_Z11delete_rearv()
  %32 = call i32 (ptr, ...) @printf(ptr noundef @.str.10, i32 noundef %31)
  br label %34

33:                                               ; preds = %13
  call void @_Z7displayv()
  br label %34

34:                                               ; preds = %33, %29, %25, %21, %17, %13
  br label %9, !llvm.loop !12

35:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  ret i32 0
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #3

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress 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 #3 = { "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 = { 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 #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, !9, i64 40}
!6 = !{!"_ZTS7dequeue", !7, i64 0, !9, i64 40, !9, i64 44}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!"int", !7, i64 0}
!10 = !{!6, !9, i64 44}
!11 = !{!9, !9, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"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"

%struct.dequeue = type { [10 x i32], i32, i32 }

@dq = external dso_local local_unnamed_addr global %struct.dequeue, align 4
@.str.3 = external hidden unnamed_addr constant [59 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [40 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [31 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [17 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [33 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [32 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z13enqueue_fronti(i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z12enqueue_reari(i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z12delete_frontv() local_unnamed_addr #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: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z11delete_rearv() local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z7displayv() local_unnamed_addr #2

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

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #4 {
  %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 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  %5 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4)
  %6 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.5)
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.6, ptr noundef nonnull %1)
  store i32 -1, ptr getelementptr inbounds (i8, ptr @dq, i64 40), align 4, !tbaa !5
  store i32 -1, ptr getelementptr inbounds (i8, ptr @dq, i64 44), align 4, !tbaa !10
  %8 = load i32, ptr %1, align 4, !tbaa !11
  %9 = add nsw i32 %8, -1
  store i32 %9, ptr %1, align 4, !tbaa !11
  %.not1 = icmp eq i32 %8, 0
  br i1 %.not1, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %0, %30
  %10 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.7)
  %11 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.6, ptr noundef nonnull %2)
  %12 = load i32, ptr %2, align 4, !tbaa !11
  switch i32 %12, label %30 [
    i32 1, label %13
    i32 2, label %17
    i32 3, label %21
    i32 4, label %25
    i32 5, label %29
  ]

13:                                               ; preds = %.lr.ph
  %14 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.8)
  %15 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.6, ptr noundef nonnull %3)
  %16 = load i32, ptr %3, align 4, !tbaa !11
  call void @_Z13enqueue_fronti(i32 noundef %16)
  br label %30

17:                                               ; preds = %.lr.ph
  %18 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.8)
  %19 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.6, ptr noundef nonnull %3)
  %20 = load i32, ptr %3, align 4, !tbaa !11
  call void @_Z12enqueue_reari(i32 noundef %20)
  br label %30

21:                                               ; preds = %.lr.ph
  %22 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.9)
  %23 = call noundef i32 @_Z12delete_frontv()
  %24 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.10, i32 noundef %23)
  br label %30

25:                                               ; preds = %.lr.ph
  %26 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.9)
  %27 = call noundef i32 @_Z11delete_rearv()
  %28 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.10, i32 noundef %27)
  br label %30

29:                                               ; preds = %.lr.ph
  call void @_Z7displayv()
  br label %30

30:                                               ; preds = %29, %25, %21, %17, %13, %.lr.ph
  %31 = load i32, ptr %1, align 4, !tbaa !11
  %32 = add nsw i32 %31, -1
  store i32 %32, ptr %1, align 4, !tbaa !11
  %.not = icmp eq i32 %31, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !12

._crit_edge:                                      ; preds = %30, %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: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

attributes #0 = { 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 #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress 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 #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 = { 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 #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, !9, i64 40}
!6 = !{!"_ZTS7dequeue", !7, i64 0, !9, i64 40, !9, i64 44}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!"int", !7, i64 0}
!10 = !{!6, !9, i64 44}
!11 = !{!9, !9, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


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