; LLVM IR from vczh/herodb :: Kernel/Source/Vlpp.ll (ZN2vl5regex6rMatchERKNS_12ObjectStringIwEEl)

; 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::MatchExpression" = type { %"class.vl::regex_internal::Expression", %"class.vl::ObjectString", i64 }
%"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_internal15MatchExpressionC2Ev(ptr noundef nonnull align 8 dereferenceable(64)) unnamed_addr #5 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN2vl5regex6rMatchERKNS_12ObjectStringIwEEl(ptr dead_on_unwind noalias writable sret(%"class.vl::regex::RegexNode") align 8 %0, ptr noundef nonnull align 8 dereferenceable(48) %1, i64 noundef %2) #3 personality ptr @__gxx_personality_v0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca %"class.vl::Ptr.1009", align 8
  store ptr %0, ptr %4, align 8
  store ptr %1, ptr %5, align 8, !tbaa !5
  store i64 %2, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #6
  %11 = call noalias noundef nonnull ptr @_Znwm(i64 noundef 64) #7
  invoke void @_ZN2vl14regex_internal15MatchExpressionC2Ev(ptr noundef nonnull align 8 dereferenceable(64) %11)
          to label %12 unwind label %22

12:                                               ; preds = %3
  store ptr %11, ptr %7, align 8, !tbaa !5
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  %14 = load ptr, ptr %7, align 8, !tbaa !5
  %15 = getelementptr inbounds %"class.vl::regex_internal::MatchExpression", ptr %14, i32 0, i32 1
  %16 = call noundef nonnull align 8 dereferenceable(48) ptr @_ZN2vl12ObjectStringIwEaSERKS1_(ptr noundef nonnull align 8 dereferenceable(48) %15, ptr noundef nonnull align 8 dereferenceable(48) %13)
  %17 = load i64, ptr %6, align 8, !tbaa !9
  %18 = load ptr, ptr %7, align 8, !tbaa !5
  %19 = getelementptr inbounds %"class.vl::regex_internal::MatchExpression", ptr %18, i32 0, i32 2
  store i64 %17, ptr %19, align 8, !tbaa !11
  %20 = load ptr, ptr %7, align 8, !tbaa !5
  call void @_ZN2vl3PtrINS_14regex_internal10ExpressionEEC2EPS2_(ptr noundef nonnull align 8 dereferenceable(32) %10, ptr noundef %20)
  invoke void @_ZN2vl5regex9RegexNodeC1ENS_3PtrINS_14regex_internal10ExpressionEEE(ptr noundef nonnull align 8 dereferenceable(40) %0, ptr noundef %10)
          to label %21 unwind label %26

21:                                               ; preds = %12
  call void @_ZN2vl3PtrINS_14regex_internal10ExpressionEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %10) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #6
  ret void

22:                                               ; preds = %3
  %23 = landingpad { ptr, i32 }
          cleanup
  %24 = extractvalue { ptr, i32 } %23, 0
  store ptr %24, ptr %8, align 8
  %25 = extractvalue { ptr, i32 } %23, 1
  store i32 %25, ptr %9, align 4
  call void @_ZdlPvm(ptr noundef %11, i64 noundef 64) #8
  br label %30

26:                                               ; preds = %12
  %27 = landingpad { ptr, i32 }
          cleanup
  %28 = extractvalue { ptr, i32 } %27, 0
  store ptr %28, ptr %8, align 8
  %29 = extractvalue { ptr, i32 } %27, 1
  store i32 %29, ptr %9, align 4
  call void @_ZN2vl3PtrINS_14regex_internal10ExpressionEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %10) #6
  br label %30

30:                                               ; preds = %26, %22
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #6
  br label %31

31:                                               ; preds = %30
  %32 = load ptr, ptr %8, align 8
  %33 = load i32, ptr %9, align 4
  %34 = insertvalue { ptr, i32 } poison, ptr %32, 0
  %35 = insertvalue { ptr, i32 } %34, i32 %33, 1
  resume { ptr, i32 } %35
}

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"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !10, i64 56}
!12 = !{!"_ZTSN2vl14regex_internal15MatchExpressionE", !13, i64 0, !15, i64 8, !10, i64 56}
!13 = !{!"_ZTSN2vl14regex_internal10ExpressionE", !14, i64 0}
!14 = !{!"_ZTSN2vl6ObjectE"}
!15 = !{!"_ZTSN2vl12ObjectStringIwEE", !14, i64 0, !6, i64 8, !6, i64 16, !10, i64 24, !10, i64 32, !10, i64 40}


; 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_internal15MatchExpressionC2Ev(ptr noundef nonnull align 8 dereferenceable(64)) unnamed_addr #4 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN2vl5regex6rMatchERKNS_12ObjectStringIwEEl(ptr dead_on_unwind noalias writable sret(%"class.vl::regex::RegexNode") align 8 %0, ptr noundef nonnull align 8 dereferenceable(48) %1, i64 noundef %2) local_unnamed_addr #2 personality ptr @__gxx_personality_v0 {
  %4 = alloca %"class.vl::Ptr.1009", align 8
  %5 = tail call noalias noundef nonnull dereferenceable(64) ptr @_Znwm(i64 noundef 64) #5
  invoke void @_ZN2vl14regex_internal15MatchExpressionC2Ev(ptr noundef nonnull align 8 dereferenceable(64) %5)
          to label %6 unwind label %11

6:                                                ; preds = %3
  %7 = getelementptr inbounds i8, ptr %5, i64 8
  %8 = tail call noundef nonnull align 8 dereferenceable(48) ptr @_ZN2vl12ObjectStringIwEaSERKS1_(ptr noundef nonnull align 8 dereferenceable(48) %7, ptr noundef nonnull align 8 dereferenceable(48) %1)
  %9 = getelementptr inbounds i8, ptr %5, i64 56
  store i64 %2, ptr %9, align 8, !tbaa !5
  call void @_ZN2vl3PtrINS_14regex_internal10ExpressionEEC2EPS2_(ptr noundef nonnull align 8 dereferenceable(32) %4, ptr noundef nonnull %5)
  invoke void @_ZN2vl5regex9RegexNodeC1ENS_3PtrINS_14regex_internal10ExpressionEEE(ptr noundef nonnull align 8 dereferenceable(40) %0, ptr noundef nonnull %4)
          to label %10 unwind label %13

10:                                               ; preds = %6
  call void @_ZN2vl3PtrINS_14regex_internal10ExpressionEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #6
  ret void

11:                                               ; preds = %3
  %12 = landingpad { ptr, i32 }
          cleanup
  tail call void @_ZdlPvm(ptr noundef nonnull %5, i64 noundef 64) #7
  br label %15

13:                                               ; preds = %6
  %14 = landingpad { ptr, i32 }
          cleanup
  call void @_ZN2vl3PtrINS_14regex_internal10ExpressionEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #6
  br label %15

15:                                               ; preds = %13, %11
  %.pn = phi { ptr, i32 } [ %14, %13 ], [ %12, %11 ]
  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)"}
!5 = !{!6, !13, i64 56}
!6 = !{!"_ZTSN2vl14regex_internal15MatchExpressionE", !7, i64 0, !9, i64 8, !13, i64 56}
!7 = !{!"_ZTSN2vl14regex_internal10ExpressionE", !8, i64 0}
!8 = !{!"_ZTSN2vl6ObjectE"}
!9 = !{!"_ZTSN2vl12ObjectStringIwEE", !8, i64 0, !10, i64 8, !10, i64 16, !13, i64 24, !13, i64 32, !13, i64 40}
!10 = !{!"any pointer", !11, i64 0}
!11 = !{!"omnipotent char", !12, i64 0}
!12 = !{!"Simple C++ TBAA"}
!13 = !{!"long", !11, i64 0}


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