; LLVM IR from vczh/herodb :: Kernel/Source/Vlpp.ll (ZN2vl5regex6rUsingERKNS_12ObjectStringIwEE)

; 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::RegexNode" = type { %"class.vl::Object", %"class.vl::Ptr.1009" }
%"class.vl::Object" = type { ptr }
%"class.vl::Ptr.1009" = type { ptr, ptr, ptr, ptr }
%"class.vl::regex_internal::UsingExpression" = type { %"class.vl::regex_internal::Expression", %"class.vl::ObjectString" }
%"class.vl::regex_internal::Expression" = type { %"class.vl::Object" }
%"class.vl::ObjectString" = type { %"class.vl::Object", ptr, ptr, i64, i64, i64 }

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

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

declare i32 @__gxx_personality_v0(...)

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

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(48) ptr @_ZN2vl12ObjectStringIwEaSERKS1_(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 8 dereferenceable(48)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN2vl3PtrINS_14regex_internal10ExpressionEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN2vl3PtrINS_14regex_internal10ExpressionEEC2EPS2_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef) unnamed_addr #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZN2vl14regex_internal15UsingExpressionC2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #5 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN2vl5regex6rUsingERKNS_12ObjectStringIwEE(ptr dead_on_unwind noalias writable sret(%"class.vl::regex::RegexNode") align 8 %0, ptr noundef nonnull align 8 dereferenceable(48) %1) #3 personality ptr @__gxx_personality_v0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca %"class.vl::Ptr.1009", align 8
  store ptr %0, ptr %3, align 8
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #6
  %9 = call noalias noundef nonnull ptr @_Znwm(i64 noundef 56) #7
  invoke void @_ZN2vl14regex_internal15UsingExpressionC2Ev(ptr noundef nonnull align 8 dereferenceable(56) %9)
          to label %10 unwind label %17

10:                                               ; preds = %2
  store ptr %9, ptr %5, align 8, !tbaa !5
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = load ptr, ptr %5, align 8, !tbaa !5
  %13 = getelementptr inbounds %"class.vl::regex_internal::UsingExpression", ptr %12, i32 0, i32 1
  %14 = call noundef nonnull align 8 dereferenceable(48) ptr @_ZN2vl12ObjectStringIwEaSERKS1_(ptr noundef nonnull align 8 dereferenceable(48) %13, ptr noundef nonnull align 8 dereferenceable(48) %11)
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  call void @_ZN2vl3PtrINS_14regex_internal10ExpressionEEC2EPS2_(ptr noundef nonnull align 8 dereferenceable(32) %8, ptr noundef %15)
  invoke void @_ZN2vl5regex9RegexNodeC1ENS_3PtrINS_14regex_internal10ExpressionEEE(ptr noundef nonnull align 8 dereferenceable(40) %0, ptr noundef %8)
          to label %16 unwind label %21

16:                                               ; preds = %10
  call void @_ZN2vl3PtrINS_14regex_internal10ExpressionEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %8) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #6
  ret void

17:                                               ; preds = %2
  %18 = landingpad { ptr, i32 }
          cleanup
  %19 = extractvalue { ptr, i32 } %18, 0
  store ptr %19, ptr %6, align 8
  %20 = extractvalue { ptr, i32 } %18, 1
  store i32 %20, ptr %7, align 4
  call void @_ZdlPvm(ptr noundef %9, i64 noundef 56) #8
  br label %25

21:                                               ; preds = %10
  %22 = landingpad { ptr, i32 }
          cleanup
  %23 = extractvalue { ptr, i32 } %22, 0
  store ptr %23, ptr %6, align 8
  %24 = extractvalue { ptr, i32 } %22, 1
  store i32 %24, ptr %7, align 4
  call void @_ZN2vl3PtrINS_14regex_internal10ExpressionEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %8) #6
  br label %25

25:                                               ; preds = %21, %17
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #6
  br label %26

26:                                               ; preds = %25
  %27 = load ptr, ptr %6, align 8
  %28 = load i32, ptr %7, align 4
  %29 = insertvalue { ptr, i32 } poison, ptr %27, 0
  %30 = insertvalue { ptr, i32 } %29, i32 %28, 1
  resume { ptr, i32 } %30
}

declare void @_ZN2vl5regex9RegexNodeC1ENS_3PtrINS_14regex_internal10ExpressionEEE(ptr, ptr)

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 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 = { 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 #5 = { inlinehint 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 #6 = { nounwind }
attributes #7 = { builtin allocsize(0) }
attributes #8 = { 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"}


; 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"

%"class.vl::regex::RegexNode" = type { %"class.vl::Object", %"class.vl::Ptr.1009" }
%"class.vl::Object" = type { ptr }
%"class.vl::Ptr.1009" = type { ptr, ptr, ptr, ptr }

; 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 noundef nonnull align 8 dereferenceable(48) ptr @_ZN2vl12ObjectStringIwEaSERKS1_(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 8 dereferenceable(48)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN2vl3PtrINS_14regex_internal10ExpressionEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN2vl3PtrINS_14regex_internal10ExpressionEEC2EPS2_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef) unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZN2vl14regex_internal15UsingExpressionC2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #4 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN2vl5regex6rUsingERKNS_12ObjectStringIwEE(ptr dead_on_unwind noalias writable sret(%"class.vl::regex::RegexNode") align 8 %0, ptr noundef nonnull align 8 dereferenceable(48) %1) local_unnamed_addr #2 personality ptr @__gxx_personality_v0 {
  %3 = alloca %"class.vl::Ptr.1009", align 8
  %4 = tail call noalias noundef nonnull dereferenceable(56) ptr @_Znwm(i64 noundef 56) #5
  invoke void @_ZN2vl14regex_internal15UsingExpressionC2Ev(ptr noundef nonnull align 8 dereferenceable(56) %4)
          to label %5 unwind label %9

5:                                                ; preds = %2
  %6 = getelementptr inbounds i8, ptr %4, i64 8
  %7 = tail call noundef nonnull align 8 dereferenceable(48) ptr @_ZN2vl12ObjectStringIwEaSERKS1_(ptr noundef nonnull align 8 dereferenceable(48) %6, ptr noundef nonnull align 8 dereferenceable(48) %1)
  call void @_ZN2vl3PtrINS_14regex_internal10ExpressionEEC2EPS2_(ptr noundef nonnull align 8 dereferenceable(32) %3, ptr noundef nonnull %4)
  invoke void @_ZN2vl5regex9RegexNodeC1ENS_3PtrINS_14regex_internal10ExpressionEEE(ptr noundef nonnull align 8 dereferenceable(40) %0, ptr noundef nonnull %3)
          to label %8 unwind label %11

8:                                                ; preds = %5
  call void @_ZN2vl3PtrINS_14regex_internal10ExpressionEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %3) #6
  ret void

9:                                                ; preds = %2
  %10 = landingpad { ptr, i32 }
          cleanup
  tail call void @_ZdlPvm(ptr noundef nonnull %4, i64 noundef 56) #7
  br label %13

11:                                               ; preds = %5
  %12 = landingpad { ptr, i32 }
          cleanup
  call void @_ZN2vl3PtrINS_14regex_internal10ExpressionEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %3) #6
  br label %13

13:                                               ; preds = %11, %9
  %.pn = phi { ptr, i32 } [ %12, %11 ], [ %10, %9 ]
  resume { ptr, i32 } %.pn
}

declare void @_ZN2vl5regex9RegexNodeC1ENS_3PtrINS_14regex_internal10ExpressionEEE(ptr, ptr) local_unnamed_addr

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 = { 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 = { inlinehint 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 #5 = { builtin allocsize(0) }
attributes #6 = { nounwind }
attributes #7 = { 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)"}


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