; LLVM IR from vczh/herodb :: Kernel/Source (Vlpp)

; 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"

%"class.vl::parsing::tabling::ParsingTokenWalker::ReduceLookAhead" = type { %"class.vl::Object", %"class.vl::collections::IEnumerable.120", ptr }
%"class.vl::Object" = type { ptr }
%"class.vl::collections::IEnumerable.120" = type { %"class.vl::Interface" }
%"class.vl::Interface" = type { ptr }
%"class.vl::parsing::tabling::ParsingTokenWalker" = type { %"class.vl::Object", ptr, %"class.vl::Ptr.61", i64, %"class.vl::parsing::tabling::ParsingTokenWalker::TokenLookAhead", %"class.vl::parsing::tabling::ParsingTokenWalker::ReduceLookAhead" }
%"class.vl::Ptr.61" = type { ptr, ptr, ptr, ptr }
%"class.vl::parsing::tabling::ParsingTokenWalker::TokenLookAhead" = type { %"class.vl::Object", %"class.vl::collections::IEnumerable.120", ptr }

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) #0

declare i32 @__gxx_personality_v0(...)

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN2vl7parsing7tabling18ParsingTokenWalker19LookAheadEnumeratorC1EPKS2_l(ptr noundef nonnull align 8 dereferenceable(56), ptr noundef, i64 noundef) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef ptr @_ZNK2vl7parsing7tabling18ParsingTokenWalker15ReduceLookAhead16CreateEnumeratorEv(ptr noundef nonnull align 8 dereferenceable(24) %0) unnamed_addr #2 align 2 personality ptr @__gxx_personality_v0 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %5 = load ptr, ptr %2, align 8
  %6 = call noalias noundef nonnull ptr @_Znwm(i64 noundef 56) #3
  %7 = getelementptr inbounds %"class.vl::parsing::tabling::ParsingTokenWalker::ReduceLookAhead", ptr %5, i32 0, i32 2
  %8 = load ptr, ptr %7, align 8, !tbaa !9
  %9 = getelementptr inbounds %"class.vl::parsing::tabling::ParsingTokenWalker::ReduceLookAhead", ptr %5, i32 0, i32 2
  %10 = load ptr, ptr %9, align 8, !tbaa !9
  %11 = getelementptr inbounds %"class.vl::parsing::tabling::ParsingTokenWalker", ptr %10, i32 0, i32 3
  %12 = load i64, ptr %11, align 8, !tbaa !13
  %13 = sub nsw i64 %12, 1
  invoke void @_ZN2vl7parsing7tabling18ParsingTokenWalker19LookAheadEnumeratorC1EPKS2_l(ptr noundef nonnull align 8 dereferenceable(56) %6, ptr noundef %8, i64 noundef %13)
          to label %14 unwind label %20

14:                                               ; preds = %1
  %15 = icmp eq ptr %6, null
  br i1 %15, label %18, label %16

16:                                               ; preds = %14
  %17 = getelementptr inbounds i8, ptr %6, i64 8
  br label %18

18:                                               ; preds = %16, %14
  %19 = phi ptr [ %17, %16 ], [ null, %14 ]
  ret ptr %19

20:                                               ; preds = %1
  %21 = landingpad { ptr, i32 }
          cleanup
  %22 = extractvalue { ptr, i32 } %21, 0
  store ptr %22, ptr %3, align 8
  %23 = extractvalue { ptr, i32 } %21, 1
  store i32 %23, ptr %4, align 4
  call void @_ZdlPvm(ptr noundef %6, i64 noundef 56) #4
  br label %24

24:                                               ; preds = %20
  %25 = load ptr, ptr %3, align 8
  %26 = load i32, ptr %4, align 4
  %27 = insertvalue { ptr, i32 } poison, ptr %25, 0
  %28 = insertvalue { ptr, i32 } %27, i32 %26, 1
  resume { ptr, i32 } %28
}

attributes #0 = { nobuiltin nounwind "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 = { nobuiltin allocsize(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 = { mustprogress 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 = { builtin allocsize(0) }
attributes #4 = { builtin 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++ TBAA"}
!9 = !{!10, !6, i64 16}
!10 = !{!"_ZTSN2vl7parsing7tabling18ParsingTokenWalker15ReduceLookAheadE", !11, i64 0, !12, i64 8, !6, i64 16}
!11 = !{!"_ZTSN2vl6ObjectE"}
!12 = !{!"_ZTSN2vl11collections11IEnumerableIlEE"}
!13 = !{!14, !16, i64 48}
!14 = !{!"_ZTSN2vl7parsing7tabling18ParsingTokenWalkerE", !11, i64 0, !6, i64 8, !15, i64 16, !16, i64 48, !17, i64 56, !10, i64 80}
!15 = !{!"_ZTSN2vl3PtrINS_7parsing7tabling12ParsingTableEEE", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24}
!16 = !{!"long", !7, i64 0}
!17 = !{!"_ZTSN2vl7parsing7tabling18ParsingTokenWalker14TokenLookAheadE", !11, i64 0, !12, i64 8, !6, i64 16}


; 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: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) local_unnamed_addr #0

declare i32 @__gxx_personality_v0(...)

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN2vl7parsing7tabling18ParsingTokenWalker19LookAheadEnumeratorC1EPKS2_l(ptr noundef nonnull align 8 dereferenceable(56), ptr noundef, i64 noundef) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef nonnull ptr @_ZNK2vl7parsing7tabling18ParsingTokenWalker15ReduceLookAhead16CreateEnumeratorEv(ptr nocapture noundef nonnull readonly align 8 dereferenceable(24) %0) unnamed_addr #2 align 2 personality ptr @__gxx_personality_v0 {
  %2 = tail call noalias noundef nonnull dereferenceable(56) ptr @_Znwm(i64 noundef 56) #3
  %3 = getelementptr inbounds i8, ptr %0, i64 16
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %4, i64 48
  %6 = load i64, ptr %5, align 8, !tbaa !12
  %7 = add nsw i64 %6, -1
  invoke void @_ZN2vl7parsing7tabling18ParsingTokenWalker19LookAheadEnumeratorC1EPKS2_l(ptr noundef nonnull align 8 dereferenceable(56) %2, ptr noundef nonnull %4, i64 noundef %7)
          to label %8 unwind label %10

8:                                                ; preds = %1
  %9 = getelementptr inbounds i8, ptr %2, i64 8
  ret ptr %9

10:                                               ; preds = %1
  %11 = landingpad { ptr, i32 }
          cleanup
  tail call void @_ZdlPvm(ptr noundef nonnull %2, i64 noundef 56) #4
  resume { ptr, i32 } %11
}

attributes #0 = { nobuiltin nounwind "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 = { nobuiltin allocsize(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 = { mustprogress 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 = { builtin allocsize(0) }
attributes #4 = { builtin 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, !9, i64 16}
!6 = !{!"_ZTSN2vl7parsing7tabling18ParsingTokenWalker15ReduceLookAheadE", !7, i64 0, !8, i64 8, !9, i64 16}
!7 = !{!"_ZTSN2vl6ObjectE"}
!8 = !{!"_ZTSN2vl11collections11IEnumerableIlEE"}
!9 = !{!"any pointer", !10, i64 0}
!10 = !{!"omnipotent char", !11, i64 0}
!11 = !{!"Simple C++ TBAA"}
!12 = !{!13, !15, i64 48}
!13 = !{!"_ZTSN2vl7parsing7tabling18ParsingTokenWalkerE", !7, i64 0, !9, i64 8, !14, i64 16, !15, i64 48, !16, i64 56, !6, i64 80}
!14 = !{!"_ZTSN2vl3PtrINS_7parsing7tabling12ParsingTableEEE", !9, i64 0, !9, i64 8, !9, i64 16, !9, i64 24}
!15 = !{!"long", !10, i64 0}
!16 = !{!"_ZTSN2vl7parsing7tabling18ParsingTokenWalker14TokenLookAheadE", !7, i64 0, !8, i64 8, !9, i64 16}


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