; LLVM IR from VAR-solutions/Algorithms :: data structures/queue/c (queue_using_array)

; 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, ptr, i32, i32 }

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

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

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

; Function Attrs: nounwind uwtable
define dso_local void @display(ptr noundef %0) #2 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  %5 = getelementptr inbounds %struct.Queue, ptr %4, i32 0, i32 2
  %6 = load i32, ptr %5, align 8, !tbaa !9
  %7 = add nsw i32 %6, 1
  store i32 %7, ptr %3, align 4, !tbaa !12
  br label %8

8:                                                ; preds = %25, %1
  %9 = load i32, ptr %3, align 4, !tbaa !12
  %10 = load ptr, ptr %2, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.Queue, ptr %10, i32 0, i32 3
  %12 = load i32, ptr %11, align 4, !tbaa !13
  %13 = add nsw i32 %12, 1
  %14 = icmp slt i32 %9, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  br label %28

16:                                               ; preds = %8
  %17 = load ptr, ptr %2, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.Queue, ptr %17, i32 0, i32 1
  %19 = load ptr, ptr %18, align 8, !tbaa !14
  %20 = load i32, ptr %3, align 4, !tbaa !12
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds i32, ptr %19, i64 %21
  %23 = load i32, ptr %22, align 4, !tbaa !12
  %24 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i32 noundef %23)
  br label %25

25:                                               ; preds = %16
  %26 = load i32, ptr %3, align 4, !tbaa !12
  %27 = add nsw i32 %26, 1
  store i32 %27, ptr %3, align 4, !tbaa !12
  br label %8, !llvm.loop !15

28:                                               ; preds = %15
  %29 = call i32 (ptr, ...) @printf(ptr noundef @.str.5)
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 #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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !11, i64 16}
!10 = !{!"Queue", !11, i64 0, !6, i64 8, !11, i64 16, !11, i64 20}
!11 = !{!"int", !7, i64 0}
!12 = !{!11, !11, i64 0}
!13 = !{!10, !11, i64 20}
!14 = !{!10, !6, i64 8}
!15 = distinct !{!15, !16}
!16 = !{!"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.4 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [2 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 @display(ptr nocapture noundef readonly %0) local_unnamed_addr #1 {
  %2 = getelementptr inbounds i8, ptr %0, i64 16
  %3 = load i32, ptr %2, align 8, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %0, i64 20
  %5 = load i32, ptr %4, align 4, !tbaa !11
  %6 = icmp slt i32 %3, %5
  br i1 %6, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1
  %7 = getelementptr inbounds i8, ptr %0, i64 8
  %8 = sext i32 %3 to i64
  br label %10

._crit_edge:                                      ; preds = %10, %1
  %9 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.5)
  ret void

10:                                               ; preds = %.lr.ph, %10
  %indvars.iv = phi i64 [ %8, %.lr.ph ], [ %indvars.iv.next, %10 ]
  %indvars.iv.next = add nsw i64 %indvars.iv, 1
  %11 = load ptr, ptr %7, align 8, !tbaa !12
  %12 = getelementptr inbounds i32, ptr %11, i64 %indvars.iv.next
  %13 = load i32, ptr %12, align 4, !tbaa !13
  %14 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i32 noundef %13)
  %15 = load i32, ptr %4, align 4, !tbaa !11
  %16 = sext i32 %15 to i64
  %17 = icmp slt i64 %indvars.iv.next, %16
  br i1 %17, label %10, label %._crit_edge, !llvm.loop !14
}

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, !7, i64 16}
!6 = !{!"Queue", !7, i64 0, !10, i64 8, !7, i64 16, !7, i64 20}
!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 20}
!12 = !{!6, !10, i64 8}
!13 = !{!7, !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


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