; LLVM IR from vczh/herodb :: Kernel/Source/Vlpp.ll (ZNK2vl5regex11RegexTokens16CreateEnumeratorEv)

; 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::regex::RegexTokens" = type { %"class.vl::Object", %"class.vl::collections::IEnumerable.51", ptr, ptr, %"class.vl::ObjectString", i64 }
%"class.vl::Object" = type { ptr }
%"class.vl::collections::IEnumerable.51" = type { %"class.vl::Interface" }
%"class.vl::Interface" = type { ptr }
%"class.vl::ObjectString" = type { %"class.vl::Object", ptr, ptr, i64, i64, i64 }

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

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_ZNK2vl12ObjectStringIwE6BufferEv(ptr noundef nonnull align 8 dereferenceable(48)) #1 align 2

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) #2

; Function Attrs: mustprogress uwtable
define dso_local noundef ptr @_ZNK2vl5regex11RegexTokens16CreateEnumeratorEv(ptr noundef nonnull align 8 dereferenceable(88) %0) unnamed_addr #1 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 248) #4
  %7 = getelementptr inbounds %"class.vl::regex::RegexTokens", ptr %5, i32 0, i32 2
  %8 = load ptr, ptr %7, align 8, !tbaa !9
  %9 = getelementptr inbounds %"class.vl::regex::RegexTokens", ptr %5, i32 0, i32 3
  %10 = load ptr, ptr %9, align 8, !tbaa !15
  %11 = getelementptr inbounds %"class.vl::regex::RegexTokens", ptr %5, i32 0, i32 4
  %12 = invoke noundef ptr @_ZNK2vl12ObjectStringIwE6BufferEv(ptr noundef nonnull align 8 dereferenceable(48) %11)
          to label %13 unwind label %22

13:                                               ; preds = %1
  %14 = getelementptr inbounds %"class.vl::regex::RegexTokens", ptr %5, i32 0, i32 5
  %15 = load i64, ptr %14, align 8, !tbaa !16
  invoke void @_ZN2vl5regex20RegexTokenEnumeratorC1EPNS_14regex_internal15PureInterpretorERKNS_11collections5ArrayIllEEPKwl(ptr noundef nonnull align 8 dereferenceable(248) %6, ptr noundef %8, ptr noundef nonnull align 8 dereferenceable(24) %10, ptr noundef %12, i64 noundef %15)
          to label %16 unwind label %22

16:                                               ; preds = %13
  %17 = icmp eq ptr %6, null
  br i1 %17, label %20, label %18

18:                                               ; preds = %16
  %19 = getelementptr inbounds i8, ptr %6, i64 8
  br label %20

20:                                               ; preds = %18, %16
  %21 = phi ptr [ %19, %18 ], [ null, %16 ]
  ret ptr %21

22:                                               ; preds = %13, %1
  %23 = landingpad { ptr, i32 }
          cleanup
  %24 = extractvalue { ptr, i32 } %23, 0
  store ptr %24, ptr %3, align 8
  %25 = extractvalue { ptr, i32 } %23, 1
  store i32 %25, ptr %4, align 4
  call void @_ZdlPvm(ptr noundef %6, i64 noundef 248) #5
  br label %26

26:                                               ; preds = %22
  %27 = load ptr, ptr %3, align 8
  %28 = load i32, ptr %4, align 4
  %29 = insertvalue { ptr, i32 } poison, ptr %27, 0
  %30 = insertvalue { ptr, i32 } %29, i32 %28, 1
  resume { ptr, i32 } %30
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN2vl5regex20RegexTokenEnumeratorC1EPNS_14regex_internal15PureInterpretorERKNS_11collections5ArrayIllEEPKwl(ptr noundef nonnull align 8 dereferenceable(248), ptr noundef, ptr noundef nonnull align 8 dereferenceable(24), ptr noundef, i64 noundef) unnamed_addr #3 align 2

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 = { 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 #2 = { 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 #3 = { mustprogress 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 #4 = { builtin allocsize(0) }
attributes #5 = { 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 = !{!"_ZTSN2vl5regex11RegexTokensE", !11, i64 0, !12, i64 8, !6, i64 16, !6, i64 24, !13, i64 32, !14, i64 80}
!11 = !{!"_ZTSN2vl6ObjectE"}
!12 = !{!"_ZTSN2vl11collections11IEnumerableINS_5regex10RegexTokenEEE"}
!13 = !{!"_ZTSN2vl12ObjectStringIwEE", !11, i64 0, !6, i64 8, !6, i64 16, !14, i64 24, !14, i64 32, !14, i64 40}
!14 = !{!"long", !7, i64 0}
!15 = !{!10, !6, i64 24}
!16 = !{!10, !14, i64 80}


; 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: mustprogress uwtable
declare dso_local noundef ptr @_ZNK2vl12ObjectStringIwE6BufferEv(ptr noundef nonnull align 8 dereferenceable(48)) local_unnamed_addr #1 align 2

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress uwtable
define dso_local noundef nonnull ptr @_ZNK2vl5regex11RegexTokens16CreateEnumeratorEv(ptr noundef nonnull align 8 dereferenceable(88) %0) unnamed_addr #1 align 2 personality ptr @__gxx_personality_v0 {
  %2 = tail call noalias noundef nonnull dereferenceable(248) ptr @_Znwm(i64 noundef 248) #4
  %3 = getelementptr inbounds i8, ptr %0, i64 16
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %0, i64 24
  %6 = load ptr, ptr %5, align 8, !tbaa !14
  %7 = getelementptr inbounds i8, ptr %0, i64 32
  %8 = invoke noundef ptr @_ZNK2vl12ObjectStringIwE6BufferEv(ptr noundef nonnull align 8 dereferenceable(48) %7)
          to label %9 unwind label %13

9:                                                ; preds = %1
  %10 = getelementptr inbounds i8, ptr %0, i64 80
  %11 = load i64, ptr %10, align 8, !tbaa !15
  tail call void @_ZN2vl5regex20RegexTokenEnumeratorC1EPNS_14regex_internal15PureInterpretorERKNS_11collections5ArrayIllEEPKwl(ptr noundef nonnull align 8 dereferenceable(248) %2, ptr noundef %4, ptr noundef nonnull align 8 dereferenceable(24) %6, ptr noundef %8, i64 noundef %11)
  %12 = getelementptr inbounds i8, ptr %2, i64 8
  ret ptr %12

13:                                               ; preds = %1
  %14 = landingpad { ptr, i32 }
          cleanup
  tail call void @_ZdlPvm(ptr noundef nonnull %2, i64 noundef 248) #5
  resume { ptr, i32 } %14
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN2vl5regex20RegexTokenEnumeratorC1EPNS_14regex_internal15PureInterpretorERKNS_11collections5ArrayIllEEPKwl(ptr noundef nonnull align 8 dereferenceable(248), ptr noundef, ptr noundef nonnull align 8 dereferenceable(24), ptr noundef, i64 noundef) unnamed_addr #3 align 2

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 = { 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 #2 = { 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 #3 = { mustprogress 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 #4 = { builtin allocsize(0) }
attributes #5 = { 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 = !{!"_ZTSN2vl5regex11RegexTokensE", !7, i64 0, !8, i64 8, !9, i64 16, !9, i64 24, !12, i64 32, !13, i64 80}
!7 = !{!"_ZTSN2vl6ObjectE"}
!8 = !{!"_ZTSN2vl11collections11IEnumerableINS_5regex10RegexTokenEEE"}
!9 = !{!"any pointer", !10, i64 0}
!10 = !{!"omnipotent char", !11, i64 0}
!11 = !{!"Simple C++ TBAA"}
!12 = !{!"_ZTSN2vl12ObjectStringIwEE", !7, i64 0, !9, i64 8, !9, i64 16, !13, i64 24, !13, i64 32, !13, i64 40}
!13 = !{!"long", !10, i64 0}
!14 = !{!6, !9, i64 24}
!15 = !{!6, !13, i64 80}


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