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

; 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.anon.0 = type { %union.anon.1, i32 }
%union.anon.1 = type { %struct.GCRef }
%struct.GCRef = type { i32 }
%struct.GCfuncC = type { %struct.GCRef, i8, i8, i8, i8, %struct.GCRef, %struct.GCRef, %struct.MRef, ptr, [1 x %union.TValue] }
%struct.MRef = type { i32 }
%union.TValue = type { i64 }

; 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: nounwind uwtable
declare hidden ptr @index2adr(ptr noundef, i32 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local ptr @lua_tocfunction(ptr noundef %0, i32 noundef %1) #1 {
  %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
  %8 = 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) #2
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = load i32, ptr %5, align 4, !tbaa !9
  %11 = call ptr @index2adr(ptr noundef %9, i32 noundef %10)
  store ptr %11, ptr %6, align 8, !tbaa !5
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.anon.0, ptr %12, i32 0, i32 1
  %14 = load i32, ptr %13, align 4, !tbaa !11
  %15 = icmp eq i32 %14, -9
  br i1 %15, label %16, label %48

16:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  %17 = load ptr, ptr %6, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.anon.0, ptr %17, i32 0, i32 0
  %19 = getelementptr inbounds %struct.GCRef, ptr %18, i32 0, i32 0
  %20 = load i32, ptr %19, align 8, !tbaa !11
  %21 = zext i32 %20 to i64
  %22 = inttoptr i64 %21 to ptr
  %23 = getelementptr inbounds %struct.GCfuncC, ptr %22, i32 0, i32 7
  %24 = getelementptr inbounds %struct.MRef, ptr %23, i32 0, i32 0
  %25 = load i32, ptr %24, align 8, !tbaa !11
  %26 = zext i32 %25 to i64
  %27 = inttoptr i64 %26 to ptr
  %28 = load i32, ptr %27, align 4, !tbaa !9
  %29 = and i32 %28, 255
  store i32 %29, ptr %7, align 4, !tbaa !9
  %30 = load i32, ptr %7, align 4, !tbaa !9
  %31 = icmp eq i32 %30, 95
  br i1 %31, label %35, label %32

32:                                               ; preds = %16
  %33 = load i32, ptr %7, align 4, !tbaa !9
  %34 = icmp eq i32 %33, 96
  br i1 %34, label %35, label %44

35:                                               ; preds = %32, %16
  %36 = load ptr, ptr %6, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.anon.0, ptr %36, i32 0, i32 0
  %38 = getelementptr inbounds %struct.GCRef, ptr %37, i32 0, i32 0
  %39 = load i32, ptr %38, align 8, !tbaa !11
  %40 = zext i32 %39 to i64
  %41 = inttoptr i64 %40 to ptr
  %42 = getelementptr inbounds %struct.GCfuncC, ptr %41, i32 0, i32 8
  %43 = load ptr, ptr %42, align 8, !tbaa !11
  store ptr %43, ptr %3, align 8
  store i32 1, ptr %8, align 4
  br label %45

44:                                               ; preds = %32
  store i32 0, ptr %8, align 4
  br label %45

45:                                               ; preds = %44, %35
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  %46 = load i32, ptr %8, align 4
  switch i32 %46, label %49 [
    i32 0, label %47
  ]

47:                                               ; preds = %45
  br label %48

48:                                               ; preds = %47, %2
  store ptr null, ptr %3, align 8
  store i32 1, ptr %8, align 4
  br label %49

49:                                               ; preds = %48, %45
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  %50 = load ptr, ptr %3, align 8
  ret ptr %50
}

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 }

!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"

; Function Attrs: nounwind uwtable
declare hidden ptr @index2adr(ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local ptr @lua_tocfunction(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = tail call ptr @index2adr(ptr noundef %0, i32 noundef %1)
  %4 = getelementptr inbounds i8, ptr %3, i64 4
  %5 = load i32, ptr %4, align 4, !tbaa !5
  %6 = icmp eq i32 %5, -9
  br i1 %6, label %7, label %.thread

7:                                                ; preds = %2
  %8 = load i32, ptr %3, align 8, !tbaa !5
  %9 = zext i32 %8 to i64
  %10 = inttoptr i64 %9 to ptr
  %11 = getelementptr inbounds i8, ptr %10, i64 16
  %12 = load i32, ptr %11, align 8, !tbaa !5
  %13 = zext i32 %12 to i64
  %14 = inttoptr i64 %13 to ptr
  %15 = load i32, ptr %14, align 4, !tbaa !8
  %16 = and i32 %15, 255
  %17 = add nsw i32 %16, -97
  %or.cond = icmp ult i32 %17, -2
  br i1 %or.cond, label %.thread, label %18

18:                                               ; preds = %7
  %19 = getelementptr inbounds i8, ptr %10, i64 24
  %20 = load ptr, ptr %19, align 8, !tbaa !5
  br label %.thread

.thread:                                          ; preds = %7, %2, %18
  %.1 = phi ptr [ %20, %18 ], [ null, %2 ], [ null, %7 ]
  ret ptr %.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" }

!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"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !6, i64 0}


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