ClangImporter: Conservatively handle new clang::HLSLInlineSpirvType type

See llvm/llvm-project#134034

Author: AnthonyLatsis

lib/ClangImporter/ImportType.cpp

@@ -429,6 +429,16 @@ namespace {
       return Type();
     }
 
+    ImportResult
+    VisitHLSLInlineSpirvType(const clang::HLSLInlineSpirvType *type) {
+      Impl.addImportDiagnostic(
+          type,
+          Diagnostic(diag::unsupported_builtin_type, type->getTypeClassName()),
+          clang::SourceLocation());
+      // FIXME: (?) HLSL types are not supported in Swift.
+      return Type();
+    }
+
     ImportResult
     VisitCountAttributedType(const clang::CountAttributedType *type) {
       return Visit(type->desugar());

lib/ClangImporter/Serializability.cpp

@@ -330,6 +330,9 @@ namespace {
     void writeTypeCoupledDeclRefInfo(clang::TypeCoupledDeclRefInfo info) {
       llvm_unreachable("TypeCoupledDeclRefInfo shouldn't be reached from swift");
     }
+    void writeHLSLSpirvOperand(clang::SpirvOperand) {
+      llvm_unreachable("SpirvOperand shouldn't be reached from swift");
+    }
   };
 }
 

lib/IRGen/GenCall.cpp

@@ -1214,6 +1214,7 @@ namespace {
 
       case clang::Type::ArrayParameter:
       case clang::Type::HLSLAttributedResource:
+      case clang::Type::HLSLInlineSpirv:
         llvm_unreachable("HLSL type in ABI lowering");
 
 

lib/Serialization/Deserialization.cpp

@@ -8478,6 +8478,9 @@ class SwiftToClangBasicReader :
   clang::TypeCoupledDeclRefInfo readTypeCoupledDeclRefInfo() {
     llvm_unreachable("TypeCoupledDeclRefInfo shouldn't be reached from swift");
   }
+  clang::SpirvOperand readHLSLSpirvOperand() {
+    llvm_unreachable("SpirvOperand shouldn't be reached from swift");
+  }
 };
 
 } // end anonymous namespace

lib/Serialization/Serialization.cpp

@@ -6286,6 +6286,9 @@ class ClangToSwiftBasicWriter :
   void writeTypeCoupledDeclRefInfo(clang::TypeCoupledDeclRefInfo info) {
     llvm_unreachable("TypeCoupledDeclRefInfo shouldn't be reached from swift");
   }
+  void writeHLSLSpirvOperand(clang::SpirvOperand) {
+    llvm_unreachable("SpirvOperand shouldn't be reached from swift");
+  }
 };
 
 }