; LLVM IR from priyankchheda/algorithms :: _other_languages/c_language/queue (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.queue = type { i32, i32, i32, ptr }

; Function Attrs: nounwind uwtable
define dso_local i32 @enqueue(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %6 = load ptr, ptr %4, align 8, !tbaa !5
  %7 = call i32 @isEmpty(ptr noundef %6)
  %8 = icmp ne i32 %7, 0
  br i1 %8, label %9, label %23

9:                                                ; preds = %2
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.queue, ptr %10, i32 0, i32 1
  store i32 0, ptr %11, align 4, !tbaa !11
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.queue, ptr %12, i32 0, i32 2
  store i32 0, ptr %13, align 8, !tbaa !13
  %14 = load i32, ptr %5, align 4, !tbaa !9
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.queue, ptr %15, i32 0, i32 3
  %17 = load ptr, ptr %16, align 8, !tbaa !14
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.queue, ptr %18, i32 0, i32 2
  %20 = load i32, ptr %19, align 8, !tbaa !13
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds i32, ptr %17, i64 %21
  store i32 %14, ptr %22, align 4, !tbaa !9
  br label %49

23:                                               ; preds = %2
  %24 = load ptr, ptr %4, align 8, !tbaa !5
  %25 = call i32 @isFull(ptr noundef %24)
  %26 = icmp ne i32 %25, 0
  br i1 %26, label %27, label %28

27:                                               ; preds = %23
  store i32 -1, ptr %3, align 4
  br label %50

28:                                               ; preds = %23
  %29 = load ptr, ptr %4, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.queue, ptr %29, i32 0, i32 2
  %31 = load i32, ptr %30, align 8, !tbaa !13
  %32 = add nsw i32 %31, 1
  %33 = load ptr, ptr %4, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.queue, ptr %33, i32 0, i32 0
  %35 = load i32, ptr %34, align 8, !tbaa !15
  %36 = srem i32 %32, %35
  %37 = load ptr, ptr %4, align 8, !tbaa !5
  %38 = getelementptr inbounds %struct.queue, ptr %37, i32 0, i32 2
  store i32 %36, ptr %38, align 8, !tbaa !13
  %39 = load i32, ptr %5, align 4, !tbaa !9
  %40 = load ptr, ptr %4, align 8, !tbaa !5
  %41 = getelementptr inbounds %struct.queue, ptr %40, i32 0, i32 3
  %42 = load ptr, ptr %41, align 8, !tbaa !14
  %43 = load ptr, ptr %4, align 8, !tbaa !5
  %44 = getelementptr inbounds %struct.queue, ptr %43, i32 0, i32 2
  %45 = load i32, ptr %44, align 8, !tbaa !13
  %46 = sext i32 %45 to i64
  %47 = getelementptr inbounds i32, ptr %42, i64 %46
  store i32 %39, ptr %47, align 4, !tbaa !9
  br label %48

48:                                               ; preds = %28
  br label %49

49:                                               ; preds = %48, %9
  store i32 0, ptr %3, align 4
  br label %50

50:                                               ; preds = %49, %27
  %51 = load i32, ptr %3, align 4
  ret i32 %51
}

; Function Attrs: nounwind uwtable
declare hidden i32 @isEmpty(ptr noundef) #0

; Function Attrs: nounwind uwtable
declare hidden i32 @isFull(ptr noundef) #0

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" }

!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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 4}
!12 = !{!"queue", !10, i64 0, !10, i64 4, !10, i64 8, !6, i64 16}
!13 = !{!12, !10, i64 8}
!14 = !{!12, !6, i64 16}
!15 = !{!12, !10, i64 0}


; 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"

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 1) i32 @enqueue(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = tail call i32 @isEmpty(ptr noundef %0)
  %.not = icmp eq i32 %3, 0
  br i1 %.not, label %9, label %4

4:                                                ; preds = %2
  %5 = getelementptr inbounds i8, ptr %0, i64 4
  store i32 0, ptr %5, align 4, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %0, i64 8
  store i32 0, ptr %6, align 8, !tbaa !11
  %7 = getelementptr inbounds i8, ptr %0, i64 16
  %8 = load ptr, ptr %7, align 8, !tbaa !12
  br label %.sink.split

9:                                                ; preds = %2
  %10 = tail call i32 @isFull(ptr noundef %0)
  %.not13 = icmp eq i32 %10, 0
  br i1 %.not13, label %11, label %21

11:                                               ; preds = %9
  %12 = getelementptr inbounds i8, ptr %0, i64 8
  %13 = load i32, ptr %12, align 8, !tbaa !11
  %14 = add nsw i32 %13, 1
  %15 = load i32, ptr %0, align 8, !tbaa !13
  %16 = srem i32 %14, %15
  store i32 %16, ptr %12, align 8, !tbaa !11
  %17 = getelementptr inbounds i8, ptr %0, i64 16
  %18 = load ptr, ptr %17, align 8, !tbaa !12
  %19 = sext i32 %16 to i64
  %20 = getelementptr inbounds i32, ptr %18, i64 %19
  br label %.sink.split

.sink.split:                                      ; preds = %11, %4
  %.sink = phi ptr [ %8, %4 ], [ %20, %11 ]
  store i32 %1, ptr %.sink, align 4, !tbaa !14
  br label %21

21:                                               ; preds = %.sink.split, %9
  %.0 = phi i32 [ -1, %9 ], [ 0, %.sink.split ]
  ret i32 %.0
}

; Function Attrs: nounwind uwtable
declare hidden i32 @isEmpty(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare hidden i32 @isFull(ptr noundef) local_unnamed_addr #0

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" }

!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, !7, i64 4}
!6 = !{!"queue", !7, i64 0, !7, i64 4, !7, i64 8, !10, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !7, i64 8}
!12 = !{!6, !10, i64 16}
!13 = !{!6, !7, i64 0}
!14 = !{!7, !7, i64 0}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InstCombinePass,SROAPass,SimplifyCFGPass,TailCallElimPass