; LLVM IR from paintdream/DontStarveLuaJIT :: src/luajit/src (lj_lib)

; 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.lua_State = type { %union.anon }
%union.anon = type { %struct.anon, [320 x i8] }
%struct.anon = type { %struct.GCRef, i8, i8, i8, i8, %struct.MRef, %struct.GCRef, ptr, ptr, %struct.MRef, %struct.MRef, %struct.GCRef, %struct.GCRef, ptr, i32 }
%struct.MRef = type { i32 }
%struct.GCRef = type { i32 }
%union.TValue = type { i64 }
%struct.anon.1 = type { %union.anon.2, i32 }
%union.anon.2 = type { %struct.GCRef }

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

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

; Function Attrs: noreturn
declare hidden void @lj_err_arg(ptr noundef, i32 noundef, i32 noundef) #1

; Function Attrs: nounwind uwtable
define hidden ptr @lj_lib_checktabornil(ptr noundef %0, i32 noundef %1) #2 {
  %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) #3
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.lua_State, ptr %8, i32 0, i32 0
  %10 = getelementptr inbounds %struct.anon, ptr %9, i32 0, i32 7
  %11 = load ptr, ptr %10, align 8, !tbaa !11
  %12 = load i32, ptr %5, align 4, !tbaa !9
  %13 = sext i32 %12 to i64
  %14 = getelementptr inbounds %union.TValue, ptr %11, i64 %13
  %15 = getelementptr inbounds %union.TValue, ptr %14, i64 -1
  store ptr %15, ptr %6, align 8, !tbaa !5
  %16 = load ptr, ptr %6, align 8, !tbaa !5
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.lua_State, ptr %17, i32 0, i32 0
  %19 = getelementptr inbounds %struct.anon, ptr %18, i32 0, i32 8
  %20 = load ptr, ptr %19, align 8, !tbaa !11
  %21 = icmp ult ptr %16, %20
  br i1 %21, label %22, label %42

22:                                               ; preds = %2
  %23 = load ptr, ptr %6, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.anon.1, ptr %23, i32 0, i32 1
  %25 = load i32, ptr %24, align 4, !tbaa !11
  %26 = icmp eq i32 %25, -12
  br i1 %26, label %27, label %34

27:                                               ; preds = %22
  %28 = load ptr, ptr %6, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.anon.1, ptr %28, i32 0, i32 0
  %30 = getelementptr inbounds %struct.GCRef, ptr %29, i32 0, i32 0
  %31 = load i32, ptr %30, align 8, !tbaa !11
  %32 = zext i32 %31 to i64
  %33 = inttoptr i64 %32 to ptr
  store ptr %33, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %45

34:                                               ; preds = %22
  %35 = load ptr, ptr %6, align 8, !tbaa !5
  %36 = getelementptr inbounds %struct.anon.1, ptr %35, i32 0, i32 1
  %37 = load i32, ptr %36, align 4, !tbaa !11
  %38 = icmp eq i32 %37, -1
  br i1 %38, label %39, label %40

39:                                               ; preds = %34
  store ptr null, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %45

40:                                               ; preds = %34
  br label %41

41:                                               ; preds = %40
  br label %42

42:                                               ; preds = %41, %2
  %43 = load ptr, ptr %4, align 8, !tbaa !5
  %44 = load i32, ptr %5, align 4, !tbaa !9
  call void @lj_err_arg(ptr noundef %43, i32 noundef %44, i32 noundef 585) #4
  unreachable

45:                                               ; preds = %39, %27
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  %46 = load ptr, ptr %3, align 8
  ret ptr %46
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { noreturn "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 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 }
attributes #4 = { noreturn }

!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 = !{!7, !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"

%union.TValue = type { i64 }

; Function Attrs: noreturn
declare hidden void @lj_err_arg(ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define hidden ptr @lj_lib_checktabornil(ptr noundef %0, i32 noundef %1) local_unnamed_addr #1 {
  %3 = getelementptr inbounds i8, ptr %0, i64 16
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %5 = sext i32 %1 to i64
  %6 = getelementptr inbounds %union.TValue, ptr %4, i64 %5
  %7 = getelementptr inbounds i8, ptr %6, i64 -8
  %8 = getelementptr inbounds i8, ptr %0, i64 24
  %9 = load ptr, ptr %8, align 8, !tbaa !5
  %10 = icmp ult ptr %7, %9
  br i1 %10, label %11, label %18

11:                                               ; preds = %2
  %12 = getelementptr inbounds i8, ptr %6, i64 -4
  %13 = load i32, ptr %12, align 4, !tbaa !5
  switch i32 %13, label %18 [
    i32 -12, label %14
    i32 -1, label %19
  ]

14:                                               ; preds = %11
  %15 = load i32, ptr %7, align 8, !tbaa !5
  %16 = zext i32 %15 to i64
  %17 = inttoptr i64 %16 to ptr
  br label %19

18:                                               ; preds = %11, %2
  tail call void @lj_err_arg(ptr noundef nonnull %0, i32 noundef %1, i32 noundef 585) #2
  unreachable

19:                                               ; preds = %11, %14
  %.0 = phi ptr [ %17, %14 ], [ null, %11 ]
  ret ptr %.0
}

attributes #0 = { noreturn "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 = { 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 = { noreturn 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}


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