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

; 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.global_State = type { ptr, i32, i32, ptr, ptr, %struct.GCState, i32, %struct.SBuf, %struct.GCstr, i8, i8, i8, i8, %struct.GCRef, %union.TValue, %union.TValue, %union.TValue, %struct.Node, %struct.GCupval, i32, i32, ptr, ptr, ptr, i32, i32, %struct.GCRef, %struct.MRef, %struct.MRef, [38 x %struct.GCRef] }
%struct.GCState = type { i32, i32, i8, i8, i8, i8, i32, %struct.GCRef, %struct.MRef, %struct.GCRef, %struct.GCRef, %struct.GCRef, %struct.GCRef, i32, i32, i32, i32 }
%struct.SBuf = type { %struct.MRef, %struct.MRef, %struct.MRef, %struct.MRef }
%struct.GCstr = type { %struct.GCRef, i8, i8, i8, i8, i32, i32 }
%union.TValue = type { i64 }
%struct.Node = type { %union.TValue, %union.TValue, %struct.MRef, %struct.MRef }
%struct.GCupval = type { %struct.GCRef, i8, i8, i8, i8, %union.anon.4, %struct.MRef, i32 }
%union.anon.4 = type { %union.TValue }

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

; Function Attrs: nounwind uwtable
define hidden void @lj_state_shrinkstack(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  %5 = load ptr, ptr %3, align 8, !tbaa !5
  %6 = getelementptr inbounds %struct.lua_State, ptr %5, i32 0, i32 0
  %7 = getelementptr inbounds %struct.anon, ptr %6, i32 0, i32 14
  %8 = load i32, ptr %7, align 8, !tbaa !11
  %9 = icmp ugt i32 %8, 65506
  br i1 %9, label %10, label %11

10:                                               ; preds = %2
  br label %61

11:                                               ; preds = %2
  %12 = load i32, ptr %4, align 4, !tbaa !9
  %13 = mul i32 4, %12
  %14 = load ptr, ptr %3, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.lua_State, ptr %14, i32 0, i32 0
  %16 = getelementptr inbounds %struct.anon, ptr %15, i32 0, i32 14
  %17 = load i32, ptr %16, align 8, !tbaa !11
  %18 = icmp ult i32 %13, %17
  br i1 %18, label %19, label %61

19:                                               ; preds = %11
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.lua_State, ptr %20, i32 0, i32 0
  %22 = getelementptr inbounds %struct.anon, ptr %21, i32 0, i32 14
  %23 = load i32, ptr %22, align 8, !tbaa !11
  %24 = icmp ult i32 90, %23
  br i1 %24, label %25, label %61

25:                                               ; preds = %19
  %26 = load ptr, ptr %3, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.lua_State, ptr %26, i32 0, i32 0
  %28 = getelementptr inbounds %struct.anon, ptr %27, i32 0, i32 5
  %29 = getelementptr inbounds %struct.MRef, ptr %28, i32 0, i32 0
  %30 = load i32, ptr %29, align 8, !tbaa !11
  %31 = zext i32 %30 to i64
  %32 = inttoptr i64 %31 to ptr
  %33 = getelementptr inbounds %struct.global_State, ptr %32, i32 0, i32 27
  %34 = getelementptr inbounds %struct.MRef, ptr %33, i32 0, i32 0
  %35 = load i32, ptr %34, align 4, !tbaa !12
  %36 = zext i32 %35 to i64
  %37 = inttoptr i64 %36 to ptr
  %38 = icmp eq ptr %37, null
  br i1 %38, label %54, label %39

39:                                               ; preds = %25
  %40 = load ptr, ptr %3, align 8, !tbaa !5
  %41 = load ptr, ptr %3, align 8, !tbaa !5
  %42 = getelementptr inbounds %struct.lua_State, ptr %41, i32 0, i32 0
  %43 = getelementptr inbounds %struct.anon, ptr %42, i32 0, i32 5
  %44 = getelementptr inbounds %struct.MRef, ptr %43, i32 0, i32 0
  %45 = load i32, ptr %44, align 8, !tbaa !11
  %46 = zext i32 %45 to i64
  %47 = inttoptr i64 %46 to ptr
  %48 = getelementptr inbounds %struct.global_State, ptr %47, i32 0, i32 26
  %49 = getelementptr inbounds %struct.GCRef, ptr %48, i32 0, i32 0
  %50 = load i32, ptr %49, align 8, !tbaa !21
  %51 = zext i32 %50 to i64
  %52 = inttoptr i64 %51 to ptr
  %53 = icmp ne ptr %40, %52
  br i1 %53, label %54, label %61

54:                                               ; preds = %39, %25
  %55 = load ptr, ptr %3, align 8, !tbaa !5
  %56 = load ptr, ptr %3, align 8, !tbaa !5
  %57 = getelementptr inbounds %struct.lua_State, ptr %56, i32 0, i32 0
  %58 = getelementptr inbounds %struct.anon, ptr %57, i32 0, i32 14
  %59 = load i32, ptr %58, align 8, !tbaa !11
  %60 = lshr i32 %59, 1
  call void @resizestack(ptr noundef %55, i32 noundef %60)
  br label %61

61:                                               ; preds = %54, %39, %19, %11, %10
  ret void
}

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 = !{!"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 = !{!13, !10, i64 252}
!13 = !{!"global_State", !6, i64 0, !10, i64 8, !10, i64 12, !6, i64 16, !6, i64 24, !14, i64 32, !10, i64 88, !17, i64 92, !18, i64 108, !7, i64 124, !7, i64 125, !7, i64 126, !7, i64 127, !15, i64 128, !7, i64 136, !7, i64 144, !7, i64 152, !19, i64 160, !20, i64 184, !10, i64 208, !10, i64 212, !6, i64 216, !6, i64 224, !6, i64 232, !10, i64 240, !10, i64 244, !15, i64 248, !16, i64 252, !16, i64 256, !7, i64 260}
!14 = !{!"GCState", !10, i64 0, !10, i64 4, !7, i64 8, !7, i64 9, !7, i64 10, !7, i64 11, !10, i64 12, !15, i64 16, !16, i64 20, !15, i64 24, !15, i64 28, !15, i64 32, !15, i64 36, !10, i64 40, !10, i64 44, !10, i64 48, !10, i64 52}
!15 = !{!"GCRef", !10, i64 0}
!16 = !{!"MRef", !10, i64 0}
!17 = !{!"SBuf", !16, i64 0, !16, i64 4, !16, i64 8, !16, i64 12}
!18 = !{!"GCstr", !15, i64 0, !7, i64 4, !7, i64 5, !7, i64 6, !7, i64 7, !10, i64 8, !10, i64 12}
!19 = !{!"Node", !7, i64 0, !7, i64 8, !16, i64 16, !16, i64 20}
!20 = !{!"GCupval", !15, i64 0, !7, i64 4, !7, i64 5, !7, i64 6, !7, i64 7, !7, i64 8, !16, i64 16, !10, i64 20}
!21 = !{!13, !10, i64 248}


; 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 void @resizestack(ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define hidden void @lj_state_shrinkstack(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 56
  %4 = load i32, ptr %3, align 8, !tbaa !5
  %5 = shl i32 %1, 2
  %6 = icmp ult i32 %5, %4
  %7 = add i32 %4, -91
  %8 = icmp ult i32 %7, 65416
  %or.cond9 = and i1 %6, %8
  br i1 %or.cond9, label %9, label %24

9:                                                ; preds = %2
  %10 = getelementptr inbounds i8, ptr %0, i64 8
  %11 = load i32, ptr %10, align 8, !tbaa !5
  %12 = zext i32 %11 to i64
  %13 = inttoptr i64 %12 to ptr
  %14 = getelementptr inbounds i8, ptr %13, i64 252
  %15 = load i32, ptr %14, align 4, !tbaa !8
  %16 = icmp eq i32 %15, 0
  br i1 %16, label %22, label %17

17:                                               ; preds = %9
  %18 = getelementptr inbounds i8, ptr %13, i64 248
  %19 = load i32, ptr %18, align 8, !tbaa !19
  %20 = zext i32 %19 to i64
  %21 = inttoptr i64 %20 to ptr
  %.not = icmp eq ptr %21, %0
  br i1 %.not, label %24, label %22

22:                                               ; preds = %17, %9
  %23 = lshr i32 %4, 1
  tail call void @resizestack(ptr noundef nonnull %0, i32 noundef %23)
  br label %24

24:                                               ; preds = %2, %22, %17
  ret void
}

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, !11, i64 252}
!9 = !{!"global_State", !10, i64 0, !11, i64 8, !11, i64 12, !10, i64 16, !10, i64 24, !12, i64 32, !11, i64 88, !15, i64 92, !16, i64 108, !6, i64 124, !6, i64 125, !6, i64 126, !6, i64 127, !13, i64 128, !6, i64 136, !6, i64 144, !6, i64 152, !17, i64 160, !18, i64 184, !11, i64 208, !11, i64 212, !10, i64 216, !10, i64 224, !10, i64 232, !11, i64 240, !11, i64 244, !13, i64 248, !14, i64 252, !14, i64 256, !6, i64 260}
!10 = !{!"any pointer", !6, i64 0}
!11 = !{!"int", !6, i64 0}
!12 = !{!"GCState", !11, i64 0, !11, i64 4, !6, i64 8, !6, i64 9, !6, i64 10, !6, i64 11, !11, i64 12, !13, i64 16, !14, i64 20, !13, i64 24, !13, i64 28, !13, i64 32, !13, i64 36, !11, i64 40, !11, i64 44, !11, i64 48, !11, i64 52}
!13 = !{!"GCRef", !11, i64 0}
!14 = !{!"MRef", !11, i64 0}
!15 = !{!"SBuf", !14, i64 0, !14, i64 4, !14, i64 8, !14, i64 12}
!16 = !{!"GCstr", !13, i64 0, !6, i64 4, !6, i64 5, !6, i64 6, !6, i64 7, !11, i64 8, !11, i64 12}
!17 = !{!"Node", !6, i64 0, !6, i64 8, !14, i64 16, !14, i64 20}
!18 = !{!"GCupval", !13, i64 0, !6, i64 4, !6, i64 5, !6, i64 6, !6, i64 7, !6, i64 8, !14, i64 16, !11, i64 20}
!19 = !{!9, !11, i64 248}


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