; LLVM IR from ramsdell/lineqpp :: lua (lzio)

; 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.Mbuffer = type { ptr, i64, i64 }

; Function Attrs: nounwind uwtable
define hidden ptr @luaZ_openspace(ptr noundef %0, ptr noundef %1, i64 noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store i64 %2, ptr %6, align 8, !tbaa !9
  %7 = load i64, ptr %6, align 8, !tbaa !9
  %8 = load ptr, ptr %5, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.Mbuffer, ptr %8, i32 0, i32 2
  %10 = load i64, ptr %9, align 8, !tbaa !11
  %11 = icmp ugt i64 %7, %10
  br i1 %11, label %12, label %42

12:                                               ; preds = %3
  %13 = load i64, ptr %6, align 8, !tbaa !9
  %14 = icmp ult i64 %13, 32
  br i1 %14, label %15, label %16

15:                                               ; preds = %12
  store i64 32, ptr %6, align 8, !tbaa !9
  br label %16

16:                                               ; preds = %15, %12
  %17 = load i64, ptr %6, align 8, !tbaa !9
  %18 = add i64 %17, 1
  %19 = icmp ule i64 %18, -3
  br i1 %19, label %20, label %32

20:                                               ; preds = %16
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = load ptr, ptr %5, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.Mbuffer, ptr %22, i32 0, i32 0
  %24 = load ptr, ptr %23, align 8, !tbaa !13
  %25 = load ptr, ptr %5, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.Mbuffer, ptr %25, i32 0, i32 2
  %27 = load i64, ptr %26, align 8, !tbaa !11
  %28 = mul i64 %27, 1
  %29 = load i64, ptr %6, align 8, !tbaa !9
  %30 = mul i64 %29, 1
  %31 = call ptr @luaM_realloc_(ptr noundef %21, ptr noundef %24, i64 noundef %28, i64 noundef %30)
  br label %35

32:                                               ; preds = %16
  %33 = load ptr, ptr %4, align 8, !tbaa !5
  %34 = call ptr @luaM_toobig(ptr noundef %33)
  br label %35

35:                                               ; preds = %32, %20
  %36 = phi ptr [ %31, %20 ], [ %34, %32 ]
  %37 = load ptr, ptr %5, align 8, !tbaa !5
  %38 = getelementptr inbounds %struct.Mbuffer, ptr %37, i32 0, i32 0
  store ptr %36, ptr %38, align 8, !tbaa !13
  %39 = load i64, ptr %6, align 8, !tbaa !9
  %40 = load ptr, ptr %5, align 8, !tbaa !5
  %41 = getelementptr inbounds %struct.Mbuffer, ptr %40, i32 0, i32 2
  store i64 %39, ptr %41, align 8, !tbaa !11
  br label %42

42:                                               ; preds = %35, %3
  %43 = load ptr, ptr %5, align 8, !tbaa !5
  %44 = getelementptr inbounds %struct.Mbuffer, ptr %43, i32 0, i32 0
  %45 = load ptr, ptr %44, align 8, !tbaa !13
  ret ptr %45
}

declare hidden ptr @luaM_realloc_(ptr noundef, ptr noundef, i64 noundef, i64 noundef) #1

declare hidden ptr @luaM_toobig(ptr noundef) #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" }
attributes #1 = { "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 = !{!"long", !7, i64 0}
!11 = !{!12, !10, i64 16}
!12 = !{!"Mbuffer", !6, i64 0, !10, i64 8, !10, i64 16}
!13 = !{!12, !6, 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
define hidden ptr @luaZ_openspace(ptr noundef %0, ptr nocapture noundef %1, i64 noundef %2) local_unnamed_addr #0 {
  %4 = getelementptr inbounds i8, ptr %1, i64 16
  %5 = load i64, ptr %4, align 8, !tbaa !5
  %6 = icmp ult i64 %5, %2
  br i1 %6, label %7, label %._crit_edge

._crit_edge:                                      ; preds = %3
  %.pre = load ptr, ptr %1, align 8, !tbaa !11
  br label %17

7:                                                ; preds = %3
  %spec.store.select = tail call i64 @llvm.umax.i64(i64 %2, i64 32)
  %8 = add i64 %spec.store.select, 1
  %9 = icmp ult i64 %8, -2
  br i1 %9, label %10, label %13

10:                                               ; preds = %7
  %11 = load ptr, ptr %1, align 8, !tbaa !11
  %12 = tail call ptr @luaM_realloc_(ptr noundef %0, ptr noundef %11, i64 noundef %5, i64 noundef %spec.store.select) #3
  br label %15

13:                                               ; preds = %7
  %14 = tail call ptr @luaM_toobig(ptr noundef %0) #3
  br label %15

15:                                               ; preds = %13, %10
  %16 = phi ptr [ %12, %10 ], [ %14, %13 ]
  store ptr %16, ptr %1, align 8, !tbaa !11
  store i64 %spec.store.select, ptr %4, align 8, !tbaa !5
  br label %17

17:                                               ; preds = %._crit_edge, %15
  %18 = phi ptr [ %.pre, %._crit_edge ], [ %16, %15 ]
  ret ptr %18
}

declare hidden ptr @luaM_realloc_(ptr noundef, ptr noundef, i64 noundef, i64 noundef) local_unnamed_addr #1

declare hidden ptr @luaM_toobig(ptr noundef) local_unnamed_addr #1

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.umax.i64(i64, i64) #2

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" }
attributes #1 = { "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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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, !10, i64 16}
!6 = !{!"Mbuffer", !7, i64 0, !10, i64 8, !10, i64 16}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!6, !7, i64 0}


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