; LLVM IR from AllAlgorithms/c :: algorithms/data-structures (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, ptr, i32 }

@.str.5 = external hidden unnamed_addr constant [17 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [18 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [45 x i8], align 1

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

; Function Attrs: nounwind uwtable
define dso_local void @display(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  %5 = getelementptr inbounds %struct.Queue, ptr %4, i32 0, i32 0
  %6 = load i32, ptr %5, align 8, !tbaa !9
  %7 = load ptr, ptr %2, align 8, !tbaa !5
  %8 = getelementptr inbounds %struct.Queue, ptr %7, i32 0, i32 1
  %9 = load i32, ptr %8, align 4, !tbaa !12
  %10 = icmp sgt i32 %6, %9
  br i1 %10, label %16, label %11

11:                                               ; preds = %1
  %12 = load ptr, ptr %2, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.Queue, ptr %12, i32 0, i32 0
  %14 = load i32, ptr %13, align 8, !tbaa !9
  %15 = icmp eq i32 %14, -1
  br i1 %15, label %16, label %18

16:                                               ; preds = %11, %1
  %17 = call i32 (ptr, ...) @printf(ptr noundef @.str.5)
  br label %43

18:                                               ; preds = %11
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  %19 = load ptr, ptr %2, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.Queue, ptr %19, i32 0, i32 0
  %21 = load i32, ptr %20, align 8, !tbaa !9
  store i32 %21, ptr %3, align 4, !tbaa !13
  br label %22

22:                                               ; preds = %40, %18
  %23 = load i32, ptr %3, align 4, !tbaa !13
  %24 = load ptr, ptr %2, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.Queue, ptr %24, i32 0, i32 1
  %26 = load i32, ptr %25, align 4, !tbaa !12
  %27 = icmp sle i32 %23, %26
  br i1 %27, label %29, label %28

28:                                               ; preds = %22
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  br label %43

29:                                               ; preds = %22
  %30 = load i32, ptr %3, align 4, !tbaa !13
  %31 = call i32 (ptr, ...) @printf(ptr noundef @.str.6, i32 noundef %30)
  %32 = load ptr, ptr %2, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct.Queue, ptr %32, i32 0, i32 2
  %34 = load ptr, ptr %33, align 8, !tbaa !14
  %35 = load i32, ptr %3, align 4, !tbaa !13
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds ptr, ptr %34, i64 %36
  %38 = load ptr, ptr %37, align 8, !tbaa !5
  %39 = call i32 (ptr, ...) @printf(ptr noundef @.str.7, ptr noundef %38)
  br label %40

40:                                               ; preds = %29
  %41 = load i32, ptr %3, align 4, !tbaa !13
  %42 = add nsw i32 %41, 1
  store i32 %42, ptr %3, align 4, !tbaa !13
  br label %22, !llvm.loop !15

43:                                               ; preds = %28, %16
  ret void
}

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

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

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" }
attributes #2 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 0}
!10 = !{!"Queue", !11, i64 0, !11, i64 4, !6, i64 8, !11, i64 16}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !11, i64 4}
!13 = !{!11, !11, i64 0}
!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.5 = external hidden unnamed_addr constant [17 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [18 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [45 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 = load i32, ptr %0, align 8, !tbaa !5
  %3 = getelementptr inbounds i8, ptr %0, i64 4
  %4 = load i32, ptr %3, align 4, !tbaa !11
  %5 = icmp sgt i32 %2, %4
  %6 = icmp eq i32 %2, -1
  %or.cond = or i1 %6, %5
  br i1 %or.cond, label %9, label %.lr.ph

.lr.ph:                                           ; preds = %1
  %7 = getelementptr inbounds i8, ptr %0, i64 8
  %8 = sext i32 %2 to i64
  br label %11

9:                                                ; preds = %1
  %10 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.5)
  br label %.loopexit

11:                                               ; preds = %.lr.ph, %11
  %indvars.iv = phi i64 [ %8, %.lr.ph ], [ %indvars.iv.next, %11 ]
  %12 = trunc nsw i64 %indvars.iv to i32
  %13 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.6, i32 noundef %12)
  %14 = load ptr, ptr %7, align 8, !tbaa !12
  %15 = getelementptr inbounds ptr, ptr %14, i64 %indvars.iv
  %16 = load ptr, ptr %15, align 8, !tbaa !13
  %17 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.7, ptr noundef %16)
  %indvars.iv.next = add nsw i64 %indvars.iv, 1
  %18 = load i32, ptr %3, align 4, !tbaa !11
  %19 = sext i32 %18 to i64
  %.not.not = icmp slt i64 %indvars.iv, %19
  br i1 %.not.not, label %11, label %.loopexit, !llvm.loop !14

.loopexit:                                        ; preds = %11, %9
  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, !7, i64 0}
!6 = !{!"Queue", !7, i64 0, !7, i64 4, !10, i64 8, !7, 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 4}
!12 = !{!6, !10, i64 8}
!13 = !{!10, !10, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


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