; 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.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 }
%struct.anon.0 = type { %union.anon.1, i32 }
%union.anon.1 = type { %struct.GCRef }
%union.TValue = type { i64 }

declare hidden void @lj_state_growstack1(ptr noundef) #0

; Function Attrs: nounwind uwtable
define dso_local void @lua_pushnil(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = getelementptr inbounds %struct.lua_State, ptr %3, i32 0, i32 0
  %5 = getelementptr inbounds %struct.anon, ptr %4, i32 0, i32 8
  %6 = load ptr, ptr %5, align 8, !tbaa !9
  %7 = getelementptr inbounds %struct.anon.0, ptr %6, i32 0, i32 1
  store i32 -1, ptr %7, align 4, !tbaa !9
  %8 = load ptr, ptr %2, 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 8
  %11 = load ptr, ptr %10, align 8, !tbaa !9
  %12 = getelementptr inbounds %union.TValue, ptr %11, i32 1
  store ptr %12, ptr %10, align 8, !tbaa !9
  %13 = load ptr, ptr %2, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.lua_State, ptr %13, i32 0, i32 0
  %15 = getelementptr inbounds %struct.anon, ptr %14, i32 0, i32 9
  %16 = getelementptr inbounds %struct.MRef, ptr %15, i32 0, i32 0
  %17 = load i32, ptr %16, align 8, !tbaa !9
  %18 = zext i32 %17 to i64
  %19 = inttoptr i64 %18 to ptr
  %20 = icmp uge ptr %12, %19
  br i1 %20, label %21, label %23

21:                                               ; preds = %1
  %22 = load ptr, ptr %2, align 8, !tbaa !5
  call void @lj_state_growstack1(ptr noundef %22)
  br label %23

23:                                               ; preds = %21, %1
  %24 = phi i1 [ false, %1 ], [ false, %21 ]
  %25 = zext i1 %24 to i32
  ret void
}

attributes #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 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!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"

declare hidden void @lj_state_growstack1(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @lua_pushnil(ptr noundef %0) local_unnamed_addr #1 {
  %2 = getelementptr inbounds i8, ptr %0, i64 24
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %3, i64 4
  store i32 -1, ptr %4, align 4, !tbaa !5
  %5 = load ptr, ptr %2, align 8, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %5, i64 8
  store ptr %6, ptr %2, align 8, !tbaa !5
  %7 = getelementptr inbounds i8, ptr %0, i64 32
  %8 = load i32, ptr %7, align 8, !tbaa !5
  %9 = zext i32 %8 to i64
  %10 = inttoptr i64 %9 to ptr
  %.not = icmp ult ptr %6, %10
  br i1 %.not, label %12, label %11

11:                                               ; preds = %1
  tail call void @lj_state_growstack1(ptr noundef nonnull %0) #2
  br label %12

12:                                               ; preds = %11, %1
  ret void
}

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


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