; LLVM IR from jovanlanik/wip :: src/wip_fn.ll (wip_realloc)

; 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"

@.str.1 = external hidden unnamed_addr constant [52 x i8], align 1
@__func__._wip_realloc = external hidden unnamed_addr constant [13 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare dso_local void @wip_log(i32 noundef, ptr noundef, ...) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local ptr @_wip_realloc(ptr noundef %0, i64 noundef %1, ptr noundef %2, ptr noundef %3) #1 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  %11 = alloca i32, align 4
  store ptr %0, ptr %6, align 8, !tbaa !5
  store i64 %1, ptr %7, align 8, !tbaa !9
  store ptr %2, ptr %8, align 8, !tbaa !5
  store ptr %3, ptr %9, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  %13 = load i64, ptr %7, align 8, !tbaa !9
  %14 = call ptr @realloc(ptr noundef %12, i64 noundef %13) #4
  store ptr %14, ptr %10, align 8, !tbaa !5
  %15 = load ptr, ptr %10, align 8, !tbaa !5
  %16 = icmp ne ptr %15, null
  br i1 %16, label %25, label %17

17:                                               ; preds = %4
  %18 = load ptr, ptr %8, align 8, !tbaa !5
  %19 = icmp ne ptr %18, null
  br i1 %19, label %20, label %22

20:                                               ; preds = %17
  %21 = load ptr, ptr %8, align 8, !tbaa !5
  store i32 0, ptr %21, align 4, !tbaa !11
  br label %22

22:                                               ; preds = %20, %17
  %23 = load ptr, ptr %9, align 8, !tbaa !5
  call void (i32, ptr, ...) @wip_log(i32 noundef 2, ptr noundef @.str.1, ptr noundef @__func__._wip_realloc, ptr noundef %23)
  %24 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %24, ptr %5, align 8
  store i32 1, ptr %11, align 4
  br label %32

25:                                               ; preds = %4
  %26 = load ptr, ptr %8, align 8, !tbaa !5
  %27 = icmp ne ptr %26, null
  br i1 %27, label %28, label %30

28:                                               ; preds = %25
  %29 = load ptr, ptr %8, align 8, !tbaa !5
  store i32 1, ptr %29, align 4, !tbaa !11
  br label %30

30:                                               ; preds = %28, %25
  %31 = load ptr, ptr %10, align 8, !tbaa !5
  store ptr %31, ptr %5, align 8
  store i32 1, ptr %11, align 4
  br label %32

32:                                               ; preds = %30, %22
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  %33 = load ptr, ptr %5, align 8
  ret ptr %33
}

; Function Attrs: nounwind allocsize(1)
declare ptr @realloc(ptr noundef, i64 noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { nounwind allocsize(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 #3 = { nounwind }
attributes #4 = { nounwind allocsize(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, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, 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"

@.str.1 = external hidden unnamed_addr constant [52 x i8], align 1
@__func__._wip_realloc = external hidden unnamed_addr constant [13 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local void @wip_log(i32 noundef, ptr noundef, ...) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local noundef ptr @_wip_realloc(ptr noundef %0, i64 noundef %1, ptr noundef writeonly %2, ptr noundef %3) local_unnamed_addr #0 {
  %5 = tail call ptr @realloc(ptr noundef %0, i64 noundef %1) #2
  %.not = icmp eq ptr %5, null
  %.not12 = icmp eq ptr %2, null
  br i1 %.not, label %6, label %9

6:                                                ; preds = %4
  br i1 %.not12, label %8, label %7

7:                                                ; preds = %6
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %8

8:                                                ; preds = %7, %6
  tail call void (i32, ptr, ...) @wip_log(i32 noundef 2, ptr noundef nonnull @.str.1, ptr noundef nonnull @__func__._wip_realloc, ptr noundef %3)
  br label %11

9:                                                ; preds = %4
  br i1 %.not12, label %11, label %10

10:                                               ; preds = %9
  store i32 1, ptr %2, align 4, !tbaa !5
  br label %11

11:                                               ; preds = %9, %10, %8
  %.0 = phi ptr [ %0, %8 ], [ %5, %10 ], [ %5, %9 ]
  ret ptr %.0
}

; Function Attrs: mustprogress nounwind willreturn allockind("realloc") allocsize(1) memory(argmem: readwrite, inaccessiblemem: readwrite)
declare noalias noundef ptr @realloc(ptr allocptr nocapture noundef, 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 = { mustprogress nounwind willreturn allockind("realloc") allocsize(1) 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 #2 = { nounwind allocsize(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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


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