; LLVM IR from qc-tum/chemtensor :: src/util (linked_list)

; 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.linked_list_node = type { ptr, ptr, ptr }
%struct.linked_list = type { ptr, ptr, i64 }

; Function Attrs: nounwind uwtable
define dso_local void @linked_list_append(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %6 = call ptr @ct_malloc(i64 noundef 24)
  store ptr %6, ptr %5, align 8, !tbaa !5
  %7 = load ptr, ptr %4, align 8, !tbaa !5
  %8 = load ptr, ptr %5, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.linked_list_node, ptr %8, i32 0, i32 0
  store ptr %7, ptr %9, align 8, !tbaa !9
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.linked_list_node, ptr %10, i32 0, i32 2
  store ptr null, ptr %11, align 8, !tbaa !11
  %12 = load ptr, ptr %3, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.linked_list, ptr %12, i32 0, i32 2
  %14 = load i64, ptr %13, align 8, !tbaa !12
  %15 = icmp eq i64 %14, 0
  br i1 %15, label %16, label %25

16:                                               ; preds = %2
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.linked_list_node, ptr %17, i32 0, i32 1
  store ptr null, ptr %18, align 8, !tbaa !15
  %19 = load ptr, ptr %5, align 8, !tbaa !5
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.linked_list, ptr %20, i32 0, i32 0
  store ptr %19, ptr %21, align 8, !tbaa !16
  %22 = load ptr, ptr %5, align 8, !tbaa !5
  %23 = load ptr, ptr %3, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.linked_list, ptr %23, i32 0, i32 1
  store ptr %22, ptr %24, align 8, !tbaa !17
  br label %39

25:                                               ; preds = %2
  %26 = load ptr, ptr %3, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.linked_list, ptr %26, i32 0, i32 1
  %28 = load ptr, ptr %27, align 8, !tbaa !17
  %29 = load ptr, ptr %5, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.linked_list_node, ptr %29, i32 0, i32 1
  store ptr %28, ptr %30, align 8, !tbaa !15
  %31 = load ptr, ptr %5, align 8, !tbaa !5
  %32 = load ptr, ptr %3, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct.linked_list, ptr %32, i32 0, i32 1
  %34 = load ptr, ptr %33, align 8, !tbaa !17
  %35 = getelementptr inbounds %struct.linked_list_node, ptr %34, i32 0, i32 2
  store ptr %31, ptr %35, align 8, !tbaa !11
  %36 = load ptr, ptr %5, align 8, !tbaa !5
  %37 = load ptr, ptr %3, align 8, !tbaa !5
  %38 = getelementptr inbounds %struct.linked_list, ptr %37, i32 0, i32 1
  store ptr %36, ptr %38, align 8, !tbaa !17
  br label %39

39:                                               ; preds = %25, %16
  %40 = load ptr, ptr %3, align 8, !tbaa !5
  %41 = getelementptr inbounds %struct.linked_list, ptr %40, i32 0, i32 2
  %42 = load i64, ptr %41, align 8, !tbaa !12
  %43 = add nsw i64 %42, 1
  store i64 %43, ptr %41, align 8, !tbaa !12
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  ret void
}

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

; Function Attrs: inlinehint nounwind uwtable
declare hidden ptr @ct_malloc(i64 noundef) #2

; 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 = { 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 }

!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 = !{!"linked_list_node", !6, i64 0, !6, i64 8, !6, i64 16}
!11 = !{!10, !6, i64 16}
!12 = !{!13, !14, i64 16}
!13 = !{!"linked_list", !6, i64 0, !6, i64 8, !14, i64 16}
!14 = !{!"long", !7, i64 0}
!15 = !{!10, !6, i64 8}
!16 = !{!13, !6, i64 0}
!17 = !{!13, !6, i64 8}


; 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 void @linked_list_append(ptr nocapture noundef %0, ptr noundef %1) local_unnamed_addr #0 {
  %3 = tail call ptr @ct_malloc(i64 noundef 24)
  store ptr %1, ptr %3, align 8, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %3, i64 16
  store ptr null, ptr %4, align 8, !tbaa !10
  %5 = getelementptr inbounds i8, ptr %0, i64 16
  %6 = load i64, ptr %5, align 8, !tbaa !11
  %7 = icmp eq i64 %6, 0
  br i1 %7, label %8, label %11

8:                                                ; preds = %2
  %9 = getelementptr inbounds i8, ptr %3, i64 8
  store ptr null, ptr %9, align 8, !tbaa !14
  store ptr %3, ptr %0, align 8, !tbaa !15
  %10 = getelementptr inbounds i8, ptr %0, i64 8
  br label %16

11:                                               ; preds = %2
  %12 = getelementptr inbounds i8, ptr %0, i64 8
  %13 = load ptr, ptr %12, align 8, !tbaa !16
  %14 = getelementptr inbounds i8, ptr %3, i64 8
  store ptr %13, ptr %14, align 8, !tbaa !14
  %15 = getelementptr inbounds i8, ptr %13, i64 16
  store ptr %3, ptr %15, align 8, !tbaa !10
  br label %16

16:                                               ; preds = %11, %8
  %.sink = phi ptr [ %12, %11 ], [ %10, %8 ]
  store ptr %3, ptr %.sink, align 8, !tbaa !16
  %17 = add nsw i64 %6, 1
  store i64 %17, ptr %5, align 8, !tbaa !11
  ret void
}

; Function Attrs: inlinehint nounwind uwtable
declare hidden ptr @ct_malloc(i64 noundef) local_unnamed_addr #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 = { 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" }

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


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