; LLVM IR from smv1999/CompetitiveProgrammingQuestionBank :: Data Structures/Queues (circular_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"

@front = external dso_local global i32, align 4
@queue = external dso_local global [5 x i32], align 16
@.str.3 = external hidden unnamed_addr constant [16 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [23 x i8], align 1

declare i32 @printf(ptr noundef, ...) #0

; Function Attrs: nounwind uwtable
define dso_local void @dequeue() #1 {
  %1 = load i32, ptr @front, align 4, !tbaa !5
  %2 = icmp eq i32 %1, -1
  br i1 %2, label %3, label %5

3:                                                ; preds = %0
  %4 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  br label %25

5:                                                ; preds = %0
  %6 = load i32, ptr @front, align 4, !tbaa !5
  %7 = icmp sgt i32 %6, 4
  br i1 %7, label %8, label %16

8:                                                ; preds = %5
  store i32 0, ptr @front, align 4, !tbaa !5
  %9 = load i32, ptr @front, align 4, !tbaa !5
  %10 = sext i32 %9 to i64
  %11 = getelementptr inbounds [5 x i32], ptr @queue, i64 0, i64 %10
  %12 = load i32, ptr %11, align 4, !tbaa !5
  %13 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i32 noundef %12)
  %14 = load i32, ptr @front, align 4, !tbaa !5
  %15 = add nsw i32 %14, 1
  store i32 %15, ptr @front, align 4, !tbaa !5
  br label %24

16:                                               ; preds = %5
  %17 = load i32, ptr @front, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds [5 x i32], ptr @queue, i64 0, i64 %18
  %20 = load i32, ptr %19, align 4, !tbaa !5
  %21 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i32 noundef %20)
  %22 = load i32, ptr @front, align 4, !tbaa !5
  %23 = add nsw i32 %22, 1
  store i32 %23, ptr @front, align 4, !tbaa !5
  br label %24

24:                                               ; preds = %16, %8
  br label %25

25:                                               ; preds = %24, %3
  ret void
}

attributes #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 = { 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/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"

@front = external dso_local local_unnamed_addr global i32, align 4
@queue = external dso_local local_unnamed_addr global [5 x i32], align 16
@.str.3 = external hidden unnamed_addr constant [16 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [23 x i8], align 1

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #0

; Function Attrs: nofree nounwind uwtable
define dso_local void @dequeue() local_unnamed_addr #1 {
  %1 = load i32, ptr @front, align 4, !tbaa !5
  %2 = icmp eq i32 %1, -1
  br i1 %2, label %3, label %5

3:                                                ; preds = %0
  %4 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  br label %19

5:                                                ; preds = %0
  %6 = icmp sgt i32 %1, 4
  br i1 %6, label %7, label %12

7:                                                ; preds = %5
  store i32 0, ptr @front, align 4, !tbaa !5
  %8 = load i32, ptr @queue, align 16, !tbaa !5
  %9 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i32 noundef %8)
  %10 = load i32, ptr @front, align 4, !tbaa !5
  %11 = add nsw i32 %10, 1
  store i32 %11, ptr @front, align 4, !tbaa !5
  br label %19

12:                                               ; preds = %5
  %13 = sext i32 %1 to i64
  %14 = getelementptr inbounds [5 x i32], ptr @queue, i64 0, i64 %13
  %15 = load i32, ptr %14, align 4, !tbaa !5
  %16 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i32 noundef %15)
  %17 = load i32, ptr @front, align 4, !tbaa !5
  %18 = add nsw i32 %17, 1
  store i32 %18, ptr @front, align 4, !tbaa !5
  br label %19

19:                                               ; preds = %7, %12, %3
  ret void
}

attributes #0 = { 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 #1 = { 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" }

!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"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SimplifyCFGPass,TailCallElimPass