; LLVM IR from Water-Melon/Melon :: src (mln_ipc)

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

@ipcs_head = external hidden global ptr, align 8
@ipcs_tail = external hidden global ptr, align 8

; Function Attrs: nounwind uwtable
define dso_local ptr @mln_ipc_handler_register(i32 noundef %0, ptr noundef nonnull %1, ptr noundef nonnull %2, ptr noundef %3, ptr noundef %4) #0 {
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  %11 = alloca ptr, align 8
  %12 = alloca ptr, align 8
  %13 = alloca i32, align 4
  store i32 %0, ptr %7, align 4, !tbaa !5
  store ptr %1, ptr %8, align 8, !tbaa !9
  store ptr %2, ptr %9, align 8, !tbaa !9
  store ptr %3, ptr %10, align 8, !tbaa !9
  store ptr %4, ptr %11, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #4
  %14 = call noalias ptr @malloc(i64 noundef 56) #5
  store ptr %14, ptr %12, align 8, !tbaa !9
  %15 = icmp eq ptr %14, null
  br i1 %15, label %16, label %17

16:                                               ; preds = %5
  store ptr null, ptr %6, align 8
  store i32 1, ptr %13, align 4
  br label %35

17:                                               ; preds = %5
  %18 = load ptr, ptr %8, align 8, !tbaa !9
  %19 = load ptr, ptr %12, align 8, !tbaa !9
  %20 = getelementptr inbounds %struct.mln_ipc_cb_s, ptr %19, i32 0, i32 2
  store ptr %18, ptr %20, align 8, !tbaa !11
  %21 = load ptr, ptr %9, align 8, !tbaa !9
  %22 = load ptr, ptr %12, align 8, !tbaa !9
  %23 = getelementptr inbounds %struct.mln_ipc_cb_s, ptr %22, i32 0, i32 3
  store ptr %21, ptr %23, align 8, !tbaa !13
  %24 = load ptr, ptr %10, align 8, !tbaa !9
  %25 = load ptr, ptr %12, align 8, !tbaa !9
  %26 = getelementptr inbounds %struct.mln_ipc_cb_s, ptr %25, i32 0, i32 4
  store ptr %24, ptr %26, align 8, !tbaa !14
  %27 = load ptr, ptr %11, align 8, !tbaa !9
  %28 = load ptr, ptr %12, align 8, !tbaa !9
  %29 = getelementptr inbounds %struct.mln_ipc_cb_s, ptr %28, i32 0, i32 5
  store ptr %27, ptr %29, align 8, !tbaa !15
  %30 = load i32, ptr %7, align 4, !tbaa !5
  %31 = load ptr, ptr %12, align 8, !tbaa !9
  %32 = getelementptr inbounds %struct.mln_ipc_cb_s, ptr %31, i32 0, i32 6
  store i32 %30, ptr %32, align 8, !tbaa !16
  %33 = load ptr, ptr %12, align 8, !tbaa !9
  call void @mln_ipc_chain_add(ptr noundef @ipcs_head, ptr noundef @ipcs_tail, ptr noundef %33)
  %34 = load ptr, ptr %12, align 8, !tbaa !9
  store ptr %34, ptr %6, align 8
  store i32 1, ptr %13, align 4
  br label %35

35:                                               ; preds = %17, %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #4
  %36 = load ptr, ptr %6, align 8
  ret ptr %36
}

; 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: inlinehint nounwind uwtable
declare hidden void @mln_ipc_chain_add(ptr noundef, ptr noundef, ptr noundef) #3

; 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 = { inlinehint 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 #4 = { nounwind }
attributes #5 = { nounwind allocsize(0) }

!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"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !10, i64 16}
!12 = !{!"mln_ipc_cb_s", !10, i64 0, !10, i64 8, !10, i64 16, !10, i64 24, !10, i64 32, !10, i64 40, !6, i64 48}
!13 = !{!12, !10, i64 24}
!14 = !{!12, !10, i64 32}
!15 = !{!12, !10, i64 40}
!16 = !{!12, !6, i64 48}


; 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"

@ipcs_head = external hidden global ptr, align 8
@ipcs_tail = external hidden global ptr, align 8

; Function Attrs: nounwind uwtable
define dso_local noundef ptr @mln_ipc_handler_register(i32 noundef %0, ptr noundef nonnull %1, ptr noundef nonnull %2, ptr noundef %3, ptr noundef %4) local_unnamed_addr #0 {
  %6 = tail call noalias dereferenceable_or_null(56) ptr @malloc(i64 noundef 56) #3
  %7 = icmp eq ptr %6, null
  br i1 %7, label %14, label %8

8:                                                ; preds = %5
  %9 = getelementptr inbounds i8, ptr %6, i64 16
  store ptr %1, ptr %9, align 8, !tbaa !5
  %10 = getelementptr inbounds i8, ptr %6, i64 24
  store ptr %2, ptr %10, align 8, !tbaa !11
  %11 = getelementptr inbounds i8, ptr %6, i64 32
  store ptr %3, ptr %11, align 8, !tbaa !12
  %12 = getelementptr inbounds i8, ptr %6, i64 40
  store ptr %4, ptr %12, align 8, !tbaa !13
  %13 = getelementptr inbounds i8, ptr %6, i64 48
  store i32 %0, ptr %13, align 8, !tbaa !14
  tail call void @mln_ipc_chain_add(ptr noundef nonnull @ipcs_head, ptr noundef nonnull @ipcs_tail, ptr noundef nonnull %6)
  br label %14

14:                                               ; preds = %5, %8
  ret ptr %6
}

; 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: inlinehint nounwind uwtable
declare hidden void @mln_ipc_chain_add(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #2

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 = { 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 = { inlinehint 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 allocsize(0) }

!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 = !{!"mln_ipc_cb_s", !7, i64 0, !7, i64 8, !7, i64 16, !7, i64 24, !7, i64 32, !7, i64 40, !10, i64 48}
!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 24}
!12 = !{!6, !7, i64 32}
!13 = !{!6, !7, i64 40}
!14 = !{!6, !10, i64 48}


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass