Add support for most of the remaining runtime supported GenericLookup types

- UnwrapNullable, FieldOffset, VTableOffset, CallingConventionConverter
- Refactor nativelayout method signature stuff to be single instanced on MethodSignature not on MethodDesc (CallingConventionConverter path needs signature but does not have MethodDesc)
- Remaining lookups are constrained call lookup and type size lookup
- Added SupportsCanon and SupportsUniversalCanon apis to type system context
- Dependency tracking to ensure that usg vtables match vtables of all other types in the system (for both lazy and eager vtable generation processes)
- VTableOffset generic lookups inject a dependency into code which uses them

[tfs-changeset: 1651754]

1 files changed, 3 insertions, 0 deletions

diff --git a/src/ILCompiler.MetadataTransform/tests/TestTypeSystemContext.cs b/src/ILCompiler.MetadataTransform/tests/TestTypeSystemContext.cs
index 6ae9dbf81..52837a236 100644
--- a/src/ILCompiler.MetadataTransform/tests/TestTypeSystemContext.cs
+++ b/src/ILCompiler.MetadataTransform/tests/TestTypeSystemContext.cs
@@ -53,5 +53,8 @@ namespace MetadataTransformTests
         {
             return GetModuleForSimpleName(name.Name, throwIfNotFound);
         }
+
+        public override bool SupportsUniversalCanon => true;
+        public override bool SupportsCanon => true;
     }
 }