; LLVM IR from hutusi/rethink-c :: src (arraylist)

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

; Function Attrs: nounwind uwtable
define dso_local ptr @arraylist_new(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %8 = load i32, ptr %5, align 4, !tbaa !9
  %9 = icmp ule i32 %8, 0
  br i1 %9, label %10, label %11

10:                                               ; preds = %2
  store i32 16, ptr %5, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %10, %2
  %12 = call noalias ptr @malloc(i64 noundef 24) #5
  store ptr %12, ptr %6, align 8, !tbaa !5
  %13 = load ptr, ptr %6, align 8, !tbaa !5
  %14 = icmp eq ptr %13, null
  br i1 %14, label %15, label %16

15:                                               ; preds = %11
  store ptr null, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %39

16:                                               ; preds = %11
  %17 = load i32, ptr %5, align 4, !tbaa !9
  %18 = load ptr, ptr %6, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct._ArrayList, ptr %18, i32 0, i32 2
  store i32 %17, ptr %19, align 4, !tbaa !11
  %20 = load ptr, ptr %6, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct._ArrayList, ptr %20, i32 0, i32 1
  store i32 0, ptr %21, align 8, !tbaa !13
  %22 = load ptr, ptr %4, align 8, !tbaa !5
  %23 = load ptr, ptr %6, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct._ArrayList, ptr %23, i32 0, i32 3
  store ptr %22, ptr %24, align 8, !tbaa !14
  %25 = load i32, ptr %5, align 4, !tbaa !9
  %26 = zext i32 %25 to i64
  %27 = mul i64 %26, 8
  %28 = call noalias ptr @malloc(i64 noundef %27) #5
  %29 = load ptr, ptr %6, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct._ArrayList, ptr %29, i32 0, i32 0
  store ptr %28, ptr %30, align 8, !tbaa !15
  %31 = load ptr, ptr %6, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct._ArrayList, ptr %31, i32 0, i32 0
  %33 = load ptr, ptr %32, align 8, !tbaa !15
  %34 = icmp eq ptr %33, null
  br i1 %34, label %35, label %37

35:                                               ; preds = %16
  %36 = load ptr, ptr %6, align 8, !tbaa !5
  call void @free(ptr noundef %36) #4
  store ptr null, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %39

37:                                               ; preds = %16
  %38 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %38, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %39

39:                                               ; preds = %37, %35, %15
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  %40 = load ptr, ptr %3, align 8
  ret ptr %40
}

; 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
declare void @free(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 = { 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 #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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 12}
!12 = !{!"_ArrayList", !6, i64 0, !10, i64 8, !10, i64 12, !6, i64 16}
!13 = !{!12, !10, i64 8}
!14 = !{!12, !6, i64 16}
!15 = !{!12, !6, i64 0}


; 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 @arraylist_new(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = tail call noalias dereferenceable_or_null(24) ptr @malloc(i64 noundef 24) #3
  %4 = icmp eq ptr %3, null
  br i1 %4, label %15, label %5

5:                                                ; preds = %2
  %6 = icmp eq i32 %1, 0
  %spec.store.select = select i1 %6, i32 16, i32 %1
  %7 = getelementptr inbounds i8, ptr %3, i64 12
  store i32 %spec.store.select, ptr %7, align 4, !tbaa !5
  %8 = getelementptr inbounds i8, ptr %3, i64 8
  store i32 0, ptr %8, align 8, !tbaa !11
  %9 = getelementptr inbounds i8, ptr %3, i64 16
  store ptr %0, ptr %9, align 8, !tbaa !12
  %10 = zext i32 %spec.store.select to i64
  %11 = shl nuw nsw i64 %10, 3
  %12 = tail call noalias ptr @malloc(i64 noundef %11) #3
  store ptr %12, ptr %3, align 8, !tbaa !13
  %13 = icmp eq ptr %12, null
  br i1 %13, label %14, label %15

14:                                               ; preds = %5
  tail call void @free(ptr noundef nonnull %3) #4
  br label %15

15:                                               ; preds = %5, %2, %14
  %.0 = phi ptr [ null, %14 ], [ null, %2 ], [ %3, %5 ]
  ret ptr %.0
}

; 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 nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #2

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 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 #3 = { nounwind allocsize(0) }
attributes #4 = { 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, !10, i64 12}
!6 = !{!"_ArrayList", !7, i64 0, !10, i64 8, !10, i64 12, !7, 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, !10, i64 8}
!12 = !{!6, !7, i64 16}
!13 = !{!6, !7, i64 0}


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