Dynamic dispatch for generic interface requirements.

-Lower interfaces into actual `IRInterfaceType` insts.
-Lower `DeclRef<AssocTypeDecl>` into `IRAssociatedType`
-Generate proper IRType for generic functions.
-Add a test case exercising dynamic dispatching a generic static function through an associated type.
-Bug fixes for the test case.

1 files changed, 3 insertions, 2 deletions

diff --git a/source/slang/slang-ir-link.cpp b/source/slang/slang-ir-link.cpp
index 3f51aa876..4e6ad74a4 100644
--- a/source/slang/slang-ir-link.cpp
+++ b/source/slang/slang-ir-link.cpp
@@ -228,6 +228,7 @@ IRInst* IRSpecContext::maybeCloneValue(IRInst* originalValue)
     case kIROp_StructKey:
     case kIROp_GlobalGenericParam:
     case kIROp_WitnessTable:
+    case kIROp_InterfaceType:
     case kIROp_TaggedUnionType:
         return cloneGlobalValue(this, originalValue);
 
@@ -607,8 +608,7 @@ IRInterfaceType* cloneInterfaceTypeImpl(
     auto clonedInterface = builder->createInterfaceType(originalInterface->getOperandCount(), nullptr);
     for (UInt i = 0; i < originalInterface->getOperandCount(); i++)
     {
-        auto clonedKey = findClonedValue(context, originalInterface->getOperand(i));
-        SLANG_ASSERT(clonedKey);
+        auto clonedKey = cloneValue(context, originalInterface->getOperand(i));
         clonedInterface->setOperand(i, clonedKey);
     }
     cloneSimpleGlobalValueImpl(context, originalInterface, originalValues, clonedInterface);
@@ -628,6 +628,7 @@ void cloneGlobalValueWithCodeCommon(
 
     cloneDecorations(context, clonedValue, originalValue);
     cloneExtraDecorations(context, clonedValue, originalValues);
+    clonedValue->setFullType((IRType*)cloneValue(context, originalValue->getFullType()));
 
     // We will walk through the blocks of the function, and clone each of them.
     //