; LLVM IR from JessonYue/LeetCodeLearning :: Array/zhangjunwei/queue (MyQueue_6_17)

; 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.MyQueue = type { ptr, ptr, i32 }

; Function Attrs: nounwind uwtable
define dso_local ptr @myQueueCreate() #0 {
  %1 = alloca ptr, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %1) #5
  %2 = call noalias ptr @malloc(i64 noundef 24) #6
  store ptr %2, ptr %1, align 8, !tbaa !5
  %3 = load ptr, ptr %1, align 8, !tbaa !5
  %4 = icmp ne ptr null, %3
  br i1 %4, label %5, label %31

5:                                                ; preds = %0
  %6 = call noalias ptr @calloc(i64 noundef 20, i64 noundef 4) #7
  %7 = load ptr, ptr %1, align 8, !tbaa !5
  %8 = getelementptr inbounds %struct.MyQueue, ptr %7, i32 0, i32 0
  store ptr %6, ptr %8, align 8, !tbaa !9
  %9 = call noalias ptr @calloc(i64 noundef 20, i64 noundef 4) #7
  %10 = load ptr, ptr %1, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.MyQueue, ptr %10, i32 0, i32 1
  store ptr %9, ptr %11, align 8, !tbaa !12
  %12 = load ptr, ptr %1, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.MyQueue, ptr %12, i32 0, i32 2
  store i32 0, ptr %13, align 8, !tbaa !13
  %14 = load ptr, ptr %1, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.MyQueue, ptr %14, i32 0, i32 0
  %16 = load ptr, ptr %15, align 8, !tbaa !9
  %17 = icmp eq ptr null, %16
  br i1 %17, label %18, label %30

18:                                               ; preds = %5
  %19 = load ptr, ptr %1, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.MyQueue, ptr %19, i32 0, i32 0
  %21 = load ptr, ptr %20, align 8, !tbaa !9
  call void @free(ptr noundef %21) #5
  %22 = load ptr, ptr %1, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.MyQueue, ptr %22, i32 0, i32 1
  %24 = load ptr, ptr %23, align 8, !tbaa !12
  call void @free(ptr noundef %24) #5
  %25 = load ptr, ptr %1, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.MyQueue, ptr %25, i32 0, i32 0
  store ptr null, ptr %26, align 8, !tbaa !9
  %27 = load ptr, ptr %1, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.MyQueue, ptr %27, i32 0, i32 1
  store ptr null, ptr %28, align 8, !tbaa !12
  %29 = load ptr, ptr %1, align 8, !tbaa !5
  call void @free(ptr noundef %29) #5
  br label %30

30:                                               ; preds = %18, %5
  br label %31

31:                                               ; preds = %30, %0
  %32 = load ptr, ptr %1, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %1) #5
  ret ptr %32
}

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

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #2

; Function Attrs: nounwind allocsize(0,1)
declare noalias ptr @calloc(i64 noundef, i64 noundef) #3

; Function Attrs: nounwind
declare void @free(ptr noundef) #4

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

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" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nounwind allocsize(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 allocsize(0,1) "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 #4 = { 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 #5 = { nounwind }
attributes #6 = { nounwind allocsize(0) }
attributes #7 = { nounwind allocsize(0,1) }

!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, !6, i64 0}
!10 = !{!"", !6, i64 0, !6, i64 8, !11, i64 16}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !6, i64 8}
!13 = !{!10, !11, i64 16}


; 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: mustprogress nounwind willreturn memory(readwrite, argmem: none) uwtable
define dso_local noalias noundef ptr @myQueueCreate() local_unnamed_addr #0 {
  %1 = tail call noalias dereferenceable_or_null(24) ptr @malloc(i64 noundef 24) #4
  %.not = icmp eq ptr %1, null
  br i1 %.not, label %9, label %2

2:                                                ; preds = %0
  %3 = tail call noalias dereferenceable_or_null(80) ptr @calloc(i64 noundef 20, i64 noundef 4) #5
  store ptr %3, ptr %1, align 8, !tbaa !5
  %4 = tail call noalias dereferenceable_or_null(80) ptr @calloc(i64 noundef 20, i64 noundef 4) #5
  %5 = getelementptr inbounds i8, ptr %1, i64 8
  store ptr %4, ptr %5, align 8, !tbaa !11
  %6 = getelementptr inbounds i8, ptr %1, i64 16
  store i32 0, ptr %6, align 8, !tbaa !12
  %7 = icmp eq ptr %3, null
  br i1 %7, label %8, label %9

8:                                                ; preds = %2
  tail call void @free(ptr noundef %4) #6
  tail call void @free(ptr noundef nonnull %1) #6
  br label %9

9:                                                ; preds = %2, %8, %0
  ret ptr %1
}

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,zeroed") allocsize(0,1) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @calloc(i64 noundef, i64 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #3

attributes #0 = { mustprogress nounwind willreturn memory(readwrite, argmem: none) 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 nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { mustprogress nofree nounwind willreturn allockind("alloc,zeroed") allocsize(0,1) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { nounwind allocsize(0) }
attributes #5 = { nounwind allocsize(0,1) }
attributes #6 = { 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, !7, i64 0}
!6 = !{!"", !7, i64 0, !7, i64 8, !10, i64 16}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !7, i64 8}
!12 = !{!6, !10, i64 16}


; Effective O3 passes: CorrelatedValuePropagationPass,DSEPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,MemCpyOptPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass