; LLVM IR from thepowersgang/mrustc :: src/expand/cfg.ll (Z15check_cfg_attrsRKN3AST13AttributeListE)

; 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.__gnu_cxx::__normal_iterator" = type { ptr }
%"class.AST::AttributeList" = type { %"class.std::vector.41" }
%"class.std::vector.41" = type { %"struct.std::_Vector_base.42" }
%"struct.std::_Vector_base.42" = type { %"struct.std::_Vector_base<AST::Attribute, std::allocator<AST::Attribute>>::_Vector_impl" }
%"struct.std::_Vector_base<AST::Attribute, std::allocator<AST::Attribute>>::_Vector_impl" = type { %"struct.std::_Vector_base<AST::Attribute, std::allocator<AST::Attribute>>::_Vector_impl_data" }
%"struct.std::_Vector_base<AST::Attribute, std::allocator<AST::Attribute>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@.str.8 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_Z9check_cfgRK4SpanRKN3AST9AttributeE(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(169)) #1

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_Z15check_cfg_attrsRKN3AST13AttributeListE(ptr noundef nonnull align 8 dereferenceable(24) %0) #1 {
  %2 = alloca i1, align 1
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %6 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #4
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = getelementptr inbounds %"class.AST::AttributeList", ptr %9, i32 0, i32 0
  store ptr %10, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = call ptr @_ZNKSt6vectorIN3AST9AttributeESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %11) #4
  %13 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %5, i32 0, i32 0
  store ptr %12, ptr %13, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = call ptr @_ZNKSt6vectorIN3AST9AttributeESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %14) #4
  %16 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %6, i32 0, i32 0
  store ptr %15, ptr %16, align 8
  br label %17

17:                                               ; preds = %36, %1
  %18 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPKN3AST9AttributeESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESD_(ptr noundef nonnull align 8 dereferenceable(8) %5, ptr noundef nonnull align 8 dereferenceable(8) %6) #4
  br i1 %18, label %20, label %19

19:                                               ; preds = %17
  store i32 2, ptr %7, align 4
  br label %38

20:                                               ; preds = %17
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  %21 = call noundef nonnull align 8 dereferenceable(169) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPKN3AST9AttributeESt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %5) #4
  store ptr %21, ptr %8, align 8, !tbaa !5
  %22 = load ptr, ptr %8, align 8, !tbaa !5
  %23 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNK3AST9Attribute4nameEv(ptr noundef nonnull align 8 dereferenceable(169) %22)
  %24 = call noundef zeroext i1 @_ZNK3AST13AttributeNameeqEPKc(ptr noundef nonnull align 8 dereferenceable(24) %23, ptr noundef @.str.8)
  br i1 %24, label %25, label %32

25:                                               ; preds = %20
  %26 = load ptr, ptr %8, align 8, !tbaa !5
  %27 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNK3AST9Attribute4spanEv(ptr noundef nonnull align 8 dereferenceable(169) %26)
  %28 = load ptr, ptr %8, align 8, !tbaa !5
  %29 = call noundef zeroext i1 @_Z9check_cfgRK4SpanRKN3AST9AttributeE(ptr noundef nonnull align 8 dereferenceable(8) %27, ptr noundef nonnull align 8 dereferenceable(169) %28)
  br i1 %29, label %31, label %30

30:                                               ; preds = %25
  store i1 false, ptr %2, align 1
  store i32 1, ptr %7, align 4
  br label %33

31:                                               ; preds = %25
  br label %32

32:                                               ; preds = %31, %20
  store i32 0, ptr %7, align 4
  br label %33

33:                                               ; preds = %32, %30
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  %34 = load i32, ptr %7, align 4
  switch i32 %34, label %38 [
    i32 0, label %35
  ]

35:                                               ; preds = %33
  br label %36

36:                                               ; preds = %35
  %37 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPKN3AST9AttributeESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %5) #4
  br label %17

38:                                               ; preds = %33, %19
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #4
  %39 = load i32, ptr %7, align 4
  switch i32 %39, label %43 [
    i32 2, label %40
    i32 1, label %41
  ]

40:                                               ; preds = %38
  store i1 true, ptr %2, align 1
  br label %41

41:                                               ; preds = %40, %38
  %42 = load i1, ptr %2, align 1
  ret i1 %42

43:                                               ; preds = %38
  unreachable
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt6vectorIN3AST9AttributeESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt6vectorIN3AST9AttributeESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPKN3AST9AttributeESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESD_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(169) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPKN3AST9AttributeESt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNK3AST9Attribute4nameEv(ptr noundef nonnull align 8 dereferenceable(169)) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZNK3AST13AttributeNameeqEPKc(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNK3AST9Attribute4spanEv(ptr noundef nonnull align 8 dereferenceable(169)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPKN3AST9AttributeESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 #3 = { inlinehint 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 = { 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.__gnu_cxx::__normal_iterator" = type { ptr }

@.str.8 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_Z9check_cfgRK4SpanRKN3AST9AttributeE(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(169)) local_unnamed_addr #1

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_Z15check_cfg_attrsRKN3AST13AttributeListE(ptr noundef nonnull align 8 dereferenceable(24) %0) local_unnamed_addr #1 {
  %2 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %3 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #4
  %4 = tail call ptr @_ZNKSt6vectorIN3AST9AttributeESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  store ptr %4, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #4
  %5 = tail call ptr @_ZNKSt6vectorIN3AST9AttributeESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  store ptr %5, ptr %3, align 8
  %6 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPKN3AST9AttributeESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESD_(ptr noundef nonnull align 8 dereferenceable(8) %2, ptr noundef nonnull align 8 dereferenceable(8) %3) #4
  br i1 %6, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1, %.critedge
  %7 = call noundef nonnull align 8 dereferenceable(169) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPKN3AST9AttributeESt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %2) #4
  %8 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNK3AST9Attribute4nameEv(ptr noundef nonnull align 8 dereferenceable(169) %7)
  %9 = call noundef zeroext i1 @_ZNK3AST13AttributeNameeqEPKc(ptr noundef nonnull align 8 dereferenceable(24) %8, ptr noundef nonnull @.str.8)
  br i1 %9, label %10, label %.critedge

10:                                               ; preds = %.lr.ph
  %11 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNK3AST9Attribute4spanEv(ptr noundef nonnull align 8 dereferenceable(169) %7)
  %12 = call noundef zeroext i1 @_Z9check_cfgRK4SpanRKN3AST9AttributeE(ptr noundef nonnull align 8 dereferenceable(8) %11, ptr noundef nonnull align 8 dereferenceable(169) %7)
  br i1 %12, label %.critedge, label %._crit_edge

.critedge:                                        ; preds = %10, %.lr.ph
  %13 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPKN3AST9AttributeESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %2) #4
  %14 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPKN3AST9AttributeESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESD_(ptr noundef nonnull align 8 dereferenceable(8) %2, ptr noundef nonnull align 8 dereferenceable(8) %3) #4
  br i1 %14, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.critedge, %10, %1
  %.lcssa = phi i1 [ true, %1 ], [ false, %10 ], [ true, %.critedge ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #4
  ret i1 %.lcssa
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt6vectorIN3AST9AttributeESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt6vectorIN3AST9AttributeESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPKN3AST9AttributeESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESD_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(169) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPKN3AST9AttributeESt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNK3AST9Attribute4nameEv(ptr noundef nonnull align 8 dereferenceable(169)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZNK3AST13AttributeNameeqEPKc(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNK3AST9Attribute4spanEv(ptr noundef nonnull align 8 dereferenceable(169)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPKN3AST9AttributeESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 #3 = { inlinehint 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 = { 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,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass