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Add support for byref fields in NativeAOT/crossgen2 #64366

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Merged
merged 3 commits into from
Jan 28, 2022
Merged

Add support for byref fields in NativeAOT/crossgen2 #64366

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e312bda
Add support for byref fields in NativeAOT/crossgen2
MichalStrehovsky Jan 27, 2022
a1a67b0
Oops
MichalStrehovsky Jan 27, 2022
53ae879
Update CorInfoImpl.cs
MichalStrehovsky Jan 27, 2022
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12 changes: 4 additions & 8 deletions src/coreclr/tools/Common/TypeSystem/Common/MetadataFieldLayoutAlgorithm.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -37,12 +37,8 @@ public override ComputedInstanceFieldLayout ComputeInstanceLayout(DefType defTyp

TypeDesc fieldType = field.FieldType;

// ByRef instance fields are not allowed.
if (fieldType.IsByRef)
ThrowHelper.ThrowTypeLoadException(ExceptionStringID.ClassLoadGeneral, type);

// ByRef-like instance fields on non-byref-like types are not allowed.
if (fieldType.IsByRefLike && !type.IsByRefLike)
// ByRef and byref-like instance fields on non-byref-like types are not allowed.
if ((fieldType.IsByRef || fieldType.IsByRefLike) && !type.IsByRefLike)
ThrowHelper.ThrowTypeLoadException(ExceptionStringID.ClassLoadGeneral, type);

numInstanceFields++;
Expand Down Expand Up @@ -481,7 +477,7 @@ protected ComputedInstanceFieldLayout ComputeAutoFieldLayout(MetadataType type,
}
else
{
Debug.Assert(fieldType.IsPrimitive || fieldType.IsPointer || fieldType.IsFunctionPointer || fieldType.IsEnum);
Debug.Assert(fieldType.IsPrimitive || fieldType.IsPointer || fieldType.IsFunctionPointer || fieldType.IsEnum || fieldType.IsByRef);

var fieldSizeAndAlignment = ComputeFieldSizeAndAlignment(fieldType, hasLayout, packingSize, out bool _, out bool _);
instanceNonGCPointerFieldsCount[CalculateLog2(fieldSizeAndAlignment.Size.AsInt)]++;
Expand Down Expand Up @@ -815,7 +811,7 @@ private static SizeAndAlignment ComputeFieldSizeAndAlignment(TypeDesc fieldType,
}
else
{
Debug.Assert(fieldType.IsPointer || fieldType.IsFunctionPointer);
Debug.Assert(fieldType.IsPointer || fieldType.IsFunctionPointer || fieldType.IsByRef);
result.Size = fieldType.Context.Target.LayoutPointerSize;
result.Alignment = fieldType.Context.Target.LayoutPointerSize;
}
Expand Down
6 changes: 3 additions & 3 deletions src/tests/Loader/classloader/RefFields/InvalidCSharp.il
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Expand Up @@ -107,17 +107,17 @@
ldarg.0
ldarga.s 1
mkrefany !T
stfld typedref InvalidCSharp.WithTypedReferenceField`1::Field
stfld typedref valuetype InvalidCSharp.WithTypedReferenceField`1<!T>::Field
ret
}

.method public hidebysig
instance class [System.Runtime]System.Type GetFieldType () cil managed
{
ldarg.0
ldfld typedref InvalidCSharp.WithTypedReferenceField`1::Field
ldfld typedref valuetype InvalidCSharp.WithTypedReferenceField`1<!T>::Field
refanytype
call class [System.Runtime]System.Type [System.Runtime]System.Type::GetTypeFromHandle(valuetype [System.Runtime]System.RuntimeTypeHandle )
ret
}
}
}