; LLVM IR from facebook/hermes :: external/llvh/lib/Demangle (ItaniumDemangle)

; 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"

%"struct.llvh::ItaniumPartialDemangler" = type { ptr, ptr }

@.str.1 = external hidden unnamed_addr constant [96 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [53 x i8], align 1
@__PRETTY_FUNCTION__._ZNK4llvh23ItaniumPartialDemangler13isSpecialNameEv = external hidden unnamed_addr constant [58 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: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i8 @_ZNK4llvh16itanium_demangle4Node7getKindEv(ptr noundef nonnull align 8 dereferenceable(12)) #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_ZNK4llvh23ItaniumPartialDemangler13isSpecialNameEv(ptr noundef nonnull align 8 dereferenceable(16) %0) #3 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca i8, align 1
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8
  %5 = getelementptr inbounds %"struct.llvh::ItaniumPartialDemangler", ptr %4, i32 0, i32 0
  %6 = load ptr, ptr %5, align 8, !tbaa !9
  %7 = icmp ne ptr %6, null
  br i1 %7, label %8, label %9

8:                                                ; preds = %1
  br label %9

9:                                                ; preds = %8, %1
  %10 = phi i1 [ false, %1 ], [ true, %8 ]
  br i1 %10, label %11, label %12

11:                                               ; preds = %9
  br label %14

12:                                               ; preds = %9
  call void @__assert_fail(ptr noundef @.str.5, ptr noundef @.str.1, i32 noundef 574, ptr noundef @__PRETTY_FUNCTION__._ZNK4llvh23ItaniumPartialDemangler13isSpecialNameEv) #4
  unreachable

13:                                               ; No predecessors!
  br label %14

14:                                               ; preds = %13, %11
  call void @llvm.lifetime.start.p0(i64 1, ptr %3) #5
  %15 = getelementptr inbounds %"struct.llvh::ItaniumPartialDemangler", ptr %4, i32 0, i32 0
  %16 = load ptr, ptr %15, align 8, !tbaa !9
  %17 = call noundef zeroext i8 @_ZNK4llvh16itanium_demangle4Node7getKindEv(ptr noundef nonnull align 8 dereferenceable(12) %16)
  store i8 %17, ptr %3, align 1, !tbaa !11
  %18 = load i8, ptr %3, align 1, !tbaa !11
  %19 = zext i8 %18 to i32
  %20 = icmp eq i32 %19, 20
  br i1 %20, label %25, label %21

21:                                               ; preds = %14
  %22 = load i8, ptr %3, align 1, !tbaa !11
  %23 = zext i8 %22 to i32
  %24 = icmp eq i32 %23, 21
  br label %25

25:                                               ; preds = %21, %14
  %26 = phi i1 [ true, %14 ], [ %24, %21 ]
  call void @llvm.lifetime.end.p0(i64 1, ptr %3) #5
  ret i1 %26
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { noreturn 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 #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 = { 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 = { noreturn nounwind }
attributes #5 = { 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 0}
!10 = !{!"_ZTSN4llvh23ItaniumPartialDemanglerE", !6, i64 0, !6, i64 8}
!11 = !{!12, !12, i64 0}
!12 = !{!"_ZTSN4llvh16itanium_demangle4Node4KindE", !7, i64 0}


; 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"

@.str.1 = external hidden unnamed_addr constant [96 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [53 x i8], align 1
@__PRETTY_FUNCTION__._ZNK4llvh23ItaniumPartialDemangler13isSpecialNameEv = external hidden unnamed_addr constant [58 x i8], align 1

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i8 @_ZNK4llvh16itanium_demangle4Node7getKindEv(ptr noundef nonnull align 8 dereferenceable(12)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_ZNK4llvh23ItaniumPartialDemangler13isSpecialNameEv(ptr nocapture noundef nonnull readonly align 8 dereferenceable(16) %0) local_unnamed_addr #1 align 2 {
  %2 = load ptr, ptr %0, align 8, !tbaa !5
  %.not = icmp eq ptr %2, null
  br i1 %.not, label %3, label %4

3:                                                ; preds = %1
  tail call void @__assert_fail(ptr noundef nonnull @.str.5, ptr noundef nonnull @.str.1, i32 noundef 574, ptr noundef nonnull @__PRETTY_FUNCTION__._ZNK4llvh23ItaniumPartialDemangler13isSpecialNameEv) #2
  unreachable

4:                                                ; preds = %1
  %5 = tail call noundef zeroext i8 @_ZNK4llvh16itanium_demangle4Node7getKindEv(ptr noundef nonnull align 8 dereferenceable(12) %2)
  %6 = and i8 %5, -2
  %7 = icmp eq i8 %6, 20
  ret i1 %7
}

attributes #0 = { noreturn 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 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 #2 = { noreturn 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, !7, i64 0}
!6 = !{!"_ZTSN4llvh23ItaniumPartialDemanglerE", !7, i64 0, !7, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}


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