; 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"

%union.TValue = type { i64 }
%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 }

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

; Function Attrs: alwaysinline nounwind uwtable
declare hidden void @copyTV(ptr noundef, ptr 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 void @lua_remove(ptr noundef %0, i32 noundef %1) #2 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = load i32, ptr %4, align 4, !tbaa !9
  %8 = call ptr @stkindex2adr(ptr noundef %6, i32 noundef %7)
  store ptr %8, ptr %5, align 8, !tbaa !5
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  br label %10

10:                                               ; preds = %18, %2
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = getelementptr inbounds %union.TValue, ptr %11, i32 1
  store ptr %12, ptr %5, align 8, !tbaa !5
  %13 = load ptr, ptr %3, 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 8
  %16 = load ptr, ptr %15, align 8, !tbaa !11
  %17 = icmp ult ptr %12, %16
  br i1 %17, label %18, label %23

18:                                               ; preds = %10
  %19 = load ptr, ptr %3, align 8, !tbaa !5
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = getelementptr inbounds %union.TValue, ptr %20, i64 -1
  %22 = load ptr, ptr %5, align 8, !tbaa !5
  call void @copyTV(ptr noundef %19, ptr noundef %21, ptr noundef %22)
  br label %10, !llvm.loop !12

23:                                               ; preds = %10
  %24 = load ptr, ptr %3, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.lua_State, ptr %24, i32 0, i32 0
  %26 = getelementptr inbounds %struct.anon, ptr %25, i32 0, i32 8
  %27 = load ptr, ptr %26, align 8, !tbaa !11
  %28 = getelementptr inbounds %union.TValue, ptr %27, i32 -1
  store ptr %28, ptr %26, align 8, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  ret void
}

; Function Attrs: nounwind uwtable
declare hidden ptr @stkindex2adr(ptr noundef, i32 noundef) #2

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

!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}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; 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: alwaysinline nounwind uwtable
declare hidden void @copyTV(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @lua_remove(ptr noundef %0, i32 noundef %1) local_unnamed_addr #1 {
  %3 = tail call ptr @stkindex2adr(ptr noundef %0, i32 noundef %1)
  %4 = getelementptr inbounds i8, ptr %0, i64 24
  %5 = getelementptr inbounds i8, ptr %3, i64 8
  %6 = load ptr, ptr %4, align 8, !tbaa !5
  %7 = icmp ult ptr %5, %6
  br i1 %7, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2, %.lr.ph
  %8 = phi ptr [ %9, %.lr.ph ], [ %5, %2 ]
  %.011 = phi ptr [ %8, %.lr.ph ], [ %3, %2 ]
  tail call void @copyTV(ptr noundef nonnull %0, ptr noundef %.011, ptr noundef nonnull %8)
  %9 = getelementptr inbounds i8, ptr %8, i64 8
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  %11 = icmp ult ptr %9, %10
  br i1 %11, label %.lr.ph, label %._crit_edge, !llvm.loop !8

._crit_edge:                                      ; preds = %.lr.ph, %2
  %.lcssa = phi ptr [ %6, %2 ], [ %10, %.lr.ph ]
  %12 = getelementptr inbounds i8, ptr %.lcssa, i64 -8
  store ptr %12, ptr %4, align 8, !tbaa !5
  ret void
}

; Function Attrs: nounwind uwtable
declare hidden ptr @stkindex2adr(ptr noundef, i32 noundef) local_unnamed_addr #1

attributes #0 = { alwaysinline 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 = { 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 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass